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1. In-beam test results of the Super-FRS GEM-TPC detector prototype with relativistic uranium ion beam

Author

M. Luoma, F. García, J. Äystö, T. Blatz, D. Chokheli, H. Flemming, K. Götzen, T. Grahn, A. Jokinen, C. Karagiannis, N. Kurz, S. Löchner, C. Nociforo, S. Rinta-Antila, C.J. Schmidt, H. Simon, R. Turpeinen, B. Voss, P. Wieczorek, M. Winkler, and Helsinki Institute of Physics

Subjects
clusterization, Nuclear and High Energy Physics, ilmaisimet, super-FRS, tutkimuslaitteet, tracking, ydinfysiikka, 114 Physical sciences, GEM-TPC, Instrumentation, FAIR
Abstract

As an essential part of the Super-FRS particle identification, the GEM-TPC detector in a twin field-cage configuration will provide position information at up to 1 MHz counting rate with a spatial resolution < 1 mm and with tracking efficiency >95 %. This detector is designed to provide particle-beam tracking information of projectiles ranging from protons to uranium. The performance of the GEM-TPC detector in a single field-cage configuration and newly integrated AWAGS readout electronics with a differential output was studied at the FRS for the response to the uranium beam at 850 MeV/u with intensity up to 1000 ions/spill. The result shows that a clusterization algorithm developed for this analysis works properly. The spatial resolution of 0.74–0.81 mm, a detection efficiency >99 %, and a tracking efficiency >96 % were found. This work describes the methodology used to achieve such results in detail. peerReviewed

Published
2023

2. Technical design report for the endcap disc DIRC

Author

F Davì, W Erni, B Krusche, M Steinacher, N Walford, H Liu, Z Liu, B Liu, X Shen, C Wang, J Zhao, M Albrecht, T Erlen, F Feldbauer, M Fink, V Freudenreich, M Fritsch, F H Heinsius, T Held, T Holtmann, I Keshk, H Koch, B Kopf, M Kuhlmann, M Kümmel, S Leiber, P Musiol, A Mustafa, M Pelizäus, A Pitka, G Reicherz, M Richter, C Schnier, T Schröder, S Sersin, L Sohl, C Sowa, M Steinke, T Triffterer, U Wiedner, R Beck, C Hammann, J Hartmann, B Ketzer, M Kube, M Rossbach, C Schmidt, R Schmitz, U Thoma, M Urban, A Bianconi, M Bragadireanu, D Pantea, W Czyzycki, M Domagala, G Filo, J Jaworowski, M Krawczyk, E Lisowski, F Lisowski, M Michałk, J Płażek, K Korcyl, A Kozela, P Kulessa, P Lebiedowicz, K Pysz, W Schäfer, A Szczurek, T Fiutowski, M Idzik, B Mindur, K Swientek, J Biernat, B Kamys, S Kistryn, G Korcyl, W Krzemien, A Magiera, P Moskal, W Przygoda, Z Rudy, P Salabura, J Smyrski, P Strzempek, A Wronska, I Augustin, R Böhm, I Lehmann, D Nicmorus Marinescu, L Schmitt, V Varentsov, M Al-Turany, A Belias, H Deppe, N Divani Veis, R Dzhygadlo, H Flemming, A Gerhardt, K Götzen, R Karabowicz, U Kurilla, D Lehmann, S Löchner, J Lühning, U Lynen, S Nakhoul, H Orth, K Peters, T Saito, G Schepers, C J Schmidt, C Schwarz, J Schwiening, A Täschner, M Traxler, B Voss, P Wieczorek, A Wilms, V Abazov, G Alexeev, V A Arefiev, V Astakhov, M Yu Barabanov, B V Batyunya, V Kh Dodokhov, A Efremov, A Fechtchenko, A Galoyan, G Golovanov, E K Koshurnikov, Y Yu Lobanov, V I Lobanov, V Malyshev, A G Olshevskiy, A A Piskun, A Samartsev, M G Sapozhnikov, N B Skachkov, A N Skachkova, E A Strokovsky, V Tokmenin, V Uzhinsky, A Verkheev, A Vodopianov, N I Zhuravlev, A Zinchenko, D Branford, D Glazier, D Watts, M Böhm, W Eyrich, A Lehmann, D Miehling, M Pfaffinger, S Stelter, F Uhlig, S Dobbs, K Seth, A Tomaradze, T Xiao, D Bettoni, A Ali, A Hamdi, M Krebs, F Nerling, V Akishina, S Gorbunov, I Kisel, G Kozlov, M Pugach, M Zyzak, N Bianchi, P Gianotti, C Guaraldo, V Lucherini, G Bracco, S Bodenschatz, K T Brinkmann, V Di Pietro, S Diehl, V Dormenev, M Düren, E Etzelmüller, K Föhl, M Galuska, T Geßler, E Gutz, C Hahn, A Hayrapetyan, M Kesselkaul, W Kühn, T Kuske, J S Lange, Y Liang, O Merle, V Metag, M Moritz, M Nanova, R Novotny, T Quagli, A Riccardi, J Rieke, M Schmidt, R Schnell, H Stenzel, M Strickert, U Thöring, T Wasem, B Wohlfahrt, H G Zaunick, E Tomasi-Gustafsson, D Ireland, G Rosner, B Seitz, P N Deepak, A Kulkarni, A Apostolou, M Babai, M Kavatsyuk, H Loehner, J Messchendorp, P Schakel, M Tiemens, J C van der Weele, S Vejdani, K Dutta, K Kalita, H Sohlbach, M Bai, L Bianchi, M Büscher, A Derichs, R Dosdall, A Erven, V Fracassi, A Gillitzer, F Goldenbaum, D Grunwald, L Jokhovets, G Kemmerling, H Kleines, A Lai, A Lehrach, M Mikirtychyants, S Orfanitski, D Prasuhn, E Prencipe, J Pütz, J Ritman, E Rosenthal, S Schadmand, T Sefzick, V Serdyuk, G Sterzenbach, T Stockmanns, P Wintz, P Wüstner, H Xu, Y Zhou, Z Li, X Ma, V Rigato, L Isaksson, P Achenbach, A Aycock, O Corell, A Denig, M Distler, M Hoek, W Lauth, H Merkel, U Müller, J Pochodzalla, S Sanchez, S Schlimme, C Sfienti, M Thiel, M Zambrana, H Ahmadi, S Ahmed, S Bleser, L Capozza, M Cardinali, A Dbeyssi, A Ehret, B Fröhlich, P Grasemann, S Haasler, D Izard, J Jorge, D Khaneft, R Klasen, R Kliemt, J Köhler, H H Leithoff, D Lin, F Maas, S Maldaner, M Michel, M C Mora Espí, C Morales Morales, C Motzko, O Noll, S Pflüger, D Rodríguez Piñeiro, M Steinen, E Walaa, S Wolff, I Zimmermann, A Fedorov, M Korzhik, O Missevitch, P Balanutsa, V Chernetsky, A Demekhin, A Dolgolenko, P Fedorets, A Gerasimov, V Goryachev, D Y Kirin, V A Matveev, A V Stavinskiy, A Balashoff, A Boukharov, O Malyshev, I Marishev, V Chandratre, V Datar, V Jha, H Kumawat, A K Mohanty, A Parmar, A K Rai, B Roy, G Sonika, C Fritzsch, S Grieser, A K Hergemöller, B Hetz, N Hüsken, A Khoukaz, J P Wessels, C Herold, K Khosonthongkee, C Kobdaj, A Limphirat, P Srisawad, Y Yan, A E Blinov, S Kononov, E A Kravchenko, E Antokhin, M Barnyakov, A Yu Barnyakov, K Beloborodov, V E Blinov, V S Bobrovnikov, I A Kuyanov, A P Onuchin, S Pivovarov, E Pyata, S Serednyakov, Y Tikhonov, R Kunne, D Marchand, B Ramstein, J van de Wiele, Y Wang, G Boca, V Burian, M Finger, A Nikolovova, M Pesek, M Peskova, M Pfeffer, I Prochazka, M Slunecka, P Gallus, V Jary, J Novy, M Tomasek, M Virius, V Vrba, V Abramov, N Belikov, S Bukreeva, A Davidenko, A Derevschikov, Y Goncharenko, V Grishin, V Kachanov, V Kormilitsin, A Levin, Y Melnik, N Minaev, V Mochalov, D Morozov, L Nogach, S Poslavskiy, A Ryazantsev, S Ryzhikov, P Semenov, I Shein, A Uzunian, A Vasiliev, A Yakutin, U Roy, B Yabsley, S Belostotski, G Gavrilov, A Izotov, S Manaenkov, O Miklukho, D Veretennikov, A Zhdanov, T Bäck, B Cederwall, K Makonyi, M Preston, P E Tegner, D Wölbing, S Godre, M P Bussa, S Marcello, S Spataro, F Iazzi, R Introzzi, A Lavagno, D Calvo, P De Remigis, A Filippi, G Mazza, A Rivetti, R Wheadon, A Martin, H Calen, W Ikegami Andersson, T Johansson, A Kupsc, P Marciniewski, M Papenbrock, J Pettersson, J Regina, K Schönning, M Wolke, J Diaz, V Pothodi Chackara, A Chlopik, G Kesik, D Melnychuk, B Slowinski, A Trzcinski, M Wojciechowski, S Wronka, B Zwieglinski, P Bühler, J Marton, D Steinschaden, K Suzuki, E Widmann, S Zimmermann, and J Zmeskal

Subjects
Subatomär fysik, Nuclear and High Energy Physics, PANDA, Subatomic Physics, Acceleratorfysik och instrumentering, technical design report, particle identification, Accelerator Physics and Instrumentation, Cherenkov detector
Abstract

PANDA (anti-proton annihiliation at Darmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. It is going to address fundamental questions of hadron physics and quantum chromodynamics using cooled antiproton beams with a high intensity and and momenta between 1.5 and 15 GeV/c. PANDA is designed to reach a maximum luminosity of 2 × 1032 cm−2 s. Most of the physics programs require an excellent particle identification (PID). The PID of hadronic states at the forward endcap of the target spectrometer will be done by a fast and compact Cherenkov detector that uses the detection of internally reflected Cherenkov light (DIRC) principle. It is designed to cover the polar angle range from 5° to 22° and to provide a separation power for the separation of charged pions and kaons up to 3 standard deviations (s.d.) for particle momenta up to 4 GeV/c in order to cover the important particle phase space. This document describes the technical design and the expected performance of the novel PANDA disc DIRC detector that has not been used in any other high energy physics experiment before. The performance has been studied with Monte-Carlo simulations and various beam tests at DESY and CERN. The final design meets all PANDA requirements and guarantees sufficient safety margins.

Published
2022

3. Recent results with lifetime enhanced microchannel-plate photomultipliers

Author

T. Keri, E. Etzelmüller, A. Hayrapetyan, M. Zühlsdorf, A. Gerhardt, W. Lauth, S. Schlimme, B. Kröck, K. Kreutzfeld, C. Schwarz, A. Belias, Michaela Thiel, J. Schwiening, Michael Düren, D. Lehmann, Klaus Peters, W. Eyrich, K. Götzen, F. Nerling, G. Kalicy, M. Schmidt, M. Krebs, G. Schepers, M. Böhm, T. Wasem, M. Patsyuk, R. Dzhygadlo, Patrick Achenbach, M. Pfaffinger, J. Rieke, K. Föhl, F. Uhlig, L. Schmitt, M. Hoek, A. Britting, Euan N. Cowie, O. Merle, M. Cardinali, A. Ali, A. Lehmann, Concettina Sfienti, and M. Traxler

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Photon, 010308 nuclear & particles physics, business.industry, 01 natural sciences, Cathode, 030218 nuclear medicine & medical imaging, Anode, law.invention, 03 medical and health sciences, Atomic layer deposition, 0302 clinical medicine, Optics, Detection of internally reflected Cherenkov light, law, 0103 physical sciences, Quantum efficiency, Microchannel plate detector, business, Instrumentation
Abstract

The favored photon sensors for the DIRC (detection of internally reflected Cherenkov light) detectors at the PANDA (Anti-proton Annihilation at Darmstadt) experiment at FAIR (Facility for anti-proton and ion research) are micro-channel-plate photomultipliers (MCP-PMTs). The main problem until a few years ago was the limited lifetime of the MCP-PMTs caused by a rapid decrease in quantum efficiency (QE) of the photo cathode (PC) with increasing integrated anode charge (IAC). These limitations are overcome by applying an atomic layer deposition (ALD) coating on the MCPs, as recently done by PHOTONIS and Hamamatsu. During the last years’ tests of lifetime enhanced MCP-PMTs were performed and their results were compared. For this, the QE was measured in dependence of the IAC as function of the wavelength and position dependent across the PC. The best performing tubes show a lifetime increase compared to not enhanced devices by a factor > 50 with an IAC > 13 C ∕ cm 2 . Additionally, performance results of new 2 inch Hamamatsu tubes and a new high QE PHOTONIS tube are presented.

Published
2018

4. The potential of $\varLambda $ and $\varXi ^-$ studies with PANDA at FAIR

Author

M. Sachs, I. K. Keshk, Xi-Guang Cao, M. Traxler, Yan Liang, G. Mazza, C. Fritzsch, T. Holtmann, S. Godre, A. N. Skachkova, Edward Lisowski, E. Rosenthal, S. Yogesh, Y. K. Sun, H. Pace, D. A. Morozov, H. Deppe, J. Pütz, A. G. Denig, S. Ryzhikov, Hans-Georg Zaunick, Dirk Grunwald, A. Kantsyrev, Paolo Mengucci, Christoph Herold, P. Eugenio, Grzegorz Filo, A. Boukharov, M. Kesselkaul, Concettina Sfienti, A. Kulkarni, M. Lattery, J. Frech, A. Hayrapetyan, W. Zhu, A. A. Piskun, Zbigniew Rudy, V. E. Blinov, S. Spataro, Jens Hartmann, S. Schlimme, D. Branford, C. Schwarz, Michaela Thiel, G. Golovanov, T. Wasem, J. Schwiening, P. Wieczorek, E. Pyata, Ch. Hammann, D. Lehmann, Chinorat Kobdaj, V. Moiseev, P. Balanutsa, B. J. Liu, S. Bodenschatz, F. E. Maas, N. Wongprachanukul, Lorenzo Scalise, M. Hoek, A. K. Saxena, M. Virius, M. Steinke, N. Rathod, A.A. Efremov, A. Samartsev, I. Shein, Alexander Olshevskiy, Herbert Koch, V. Panjushkin, K. Nowakowski, S. Belostotski, S. Bukreeva, Ulrich Wiedner, U. Thöring, A.S. Vodopianov, J. Kellers, L. Robison, Ting Xiao, V. Crede, Egle Tomasi-Gustafsson, R. Karabowicz, P. Srisawad, F. Feldbauer, J. Reher, D. Kazlou, M. Yu. Barabanov, W. Kühn, M. Steinen, P. Wintz, D. Wölbing, A. Dbeyssi, M. Kunze, C. Hargens, A. Pitka, A. Lehmann, I. Augustin, Mathias Fink, P. Terlecki, A. E. Yakutin, Magnus Wolke, I. Kisel, V. Varentsov, U. Thoma, Nicola Bianchi, D. Bettoni, Antoni Szczurek, Dan Pantea, M. Slunecka, D. I. Glazier, H. H. Leithoff, Genady Gavrilov, P. Jiang, T. Simantathammakul, Felice Iazzi, E. Widmann, D. G. Ireland, C. Motzko, K.-T. Brinkmann, M. Schmidt, Johann Marton, J. Tao, W. Eyrich, M. Straube, Krzysztof Swientek, B. Krusche, N. K. Walford, S. Vejdani, G. Perez Andrade, Richard Wheadon, N. Kratochwil, H. Li, L. Jokhovets, S.G. Pivovarov, W. Ikegami Andersson, S. Grieser, A. Gerhardt, H. Qi, W. Lauth, S. Diehl, R. Beck, Krzysztof Korcyl, Angelo Rivetti, K. Makonyi, Yupeng Yan, P. P. Natali, G. Kesik, K. N. Basant, I. Lehmann, A. V. Stavinskiy, W. Esmail, M. Preston, A. Gillitzer, D. Calvo, Ayut Limphirat, A. Demekhin, J. Müllers, M. Pelizäus, Andrew Levin, Gianangelo Bracco, N. Quin, D. Lersch, V. Chernetsky, M. Domagala, N. Minaev, A. Balashoff, U. Müller, N. Hüsken, V. Abramov, Torbjörn Bäck, A. Ali, S. Pflüger, C. Yu, G. Boca, R. Klasen, N. Kristi, J. Zmeskal, T. Nasawad, A. Dolgolenko, A. Belousov, B. Wohlfahrt, H. Xu, R. Dosdall, E. Maslova, Gianni Barucca, M.P. Bussa, B. Seitz, J. S. Díaz, G. Hunter, M. Volf, V.Kh. Dodokhov, Piotr Lebiedowicz, A. Scholl, Grzegorz Korcyl, H. Loehner, Mohammed Al-Turany, Andrzej Kupsc, R. W. Novotny, L. Montalto, A. E. Blinov, J. Kannika, Andrey Uzunian, R. Lalik, P. N. Deepak, P.-E. Tegnér, E. Antokhin, A. Gerasimov, P. De Remigis, X. Zhou, Petr Gallus, P. Orsich, I. Prochazka, Valentino Rigato, S. Maldaner, M. Himmelreich, V. M. Abazov, J. Płażek, Kazem Azizi, James Ritman, S. Wolff, Andrea Bianconi, Nicola Paone, W. Nalti, S. Kegel, I. A. Kuyanov, M. Steinacher, A. Chlopik, V. Lucherini, A. Belias, K. K. Seth, Mario Bragadireanu, C. J. Schmidt, V. Freudenreich, A. Ehret, G. V. Fedotov, J. Li, A. Galoyan, G. Neue, P. Schakel, M. Wojciechowski, B. Kopf, C. Liu, P. Gianotti, X. Ma, R. Kappert, Oleg V. Missevitch, J. Pereira-de-Lira, X. Zhang, D. Melnychuk, Paweł Moskal, I. Köseoglu, Bo Cederwall, K. Götzen, M. Finger, M. Marcisovsky, A. Derevschikov, V. Goryachev, V. Jary, R. Kunne, Y. Zhou, G. Reicherz, C. Schnier, J. G. Messchendorp, M. Michałek, T. Erlen, D. Miehling, G. D. Alexeev, Hasko Stenzel, A. Fechtchenko, L. Schmitt, J. Rieger, M. Zyzak, Michael Papenbrock, F. Schupp, Sean A Dobbs, J. Pochodzalla, S. Chernichenko, S. Shimanski, A. Mustafa, K. Dutta, M. Kümmel, S. Bökelmann, S. Sun, Bruce Yabsley, I. Zimmermann, E.K. Koshurnikov, B. Zwieglinski, O. Malyshev, H. Flemming, O. Korchak, U. Kurilla, F. Nerling, M. Pugach, Claude Amsler, G. Huang, A. Akram, L. Sohl, B. J. Roy, S. Wronka, Andrey V. Izotov, Vaclav Vrba, A. Malige, M. Kuhlmann, E. Prencipe, R. Böhm, R. Schubert, Matthias Richter, M. Krebs, L. Nogach, Frank Goldenbaum, B. Ramstein, X. Y. Shen, Paul Alois Buhler, S. I. Manaenkov, A. Aycock, M. Küßner, A. Khoukaz, E. Luschevskaya, K. Khosonthongkee, C. Wenzel, M. Pfaffinger, J. Lühning, P. Poznański, Fabrizio Daví, S. Koch, O. Corell, M. Kavatsyuk, Bernd Voss, B. Hetz, Daniele Rinaldi, J. Regina, L. Capozza, J. Novy, V. Ferapontov, A. Kozela, D. Y. Kirin, U. Lynen, T. Johansson, S. Orfanitski, M. Tomasek, A. Derichs, Andrea Lavagno, Krisztian Peters, A. Ryazantsev, Daniel Duda, Valery Dormenev, M. Peskova, X. A. Xiong, O. Noll, M. Rossbach, M. Fritsch, N. I. Zhuravlev, Tomasz Fiutowski, S. Zimmermann, Y. Melnik, V. A. Matveev, A. Täschner, P. Salabura, S.A. Kononov, T. Triffterer, J. S. Lange, K. Pysz, K. Kalita, W. Erni, Ajay Kumar Rai, D. P. Watts, Lennart Isaksson, Utpal N. Roy, M. Strickert, M. Böhm, M. Albrecht, Y. Bettner, Boris Batyunya, A. Hamdi, J. Hofmann, Jize Zhao, R. Dzhygadlo, T. Held, V. V. Tokmenin, K. Manasatitpong, Andrei Fedorov, H. Orth, Hans Calén, M. Urban, G. Zhao, F. Lisowski, Witold Przygoda, D. Prasuhn, M. Zambrana, W. Schäfer, S. Bleser, A. K. Hergemöller, M. Pesek, Y. A. Tikhonov, A. Filippi, M. Peter, Volker Metag, M. Moritz, A. Kripko, J. Tarasiuk, S. Schadmand, G. Schepers, S. Poslavskiy, Andreas Martin Heinz, Anne-Laure Martin, L. Brück, Antonin Kveton, V. Mochalov, D. Steinschaden, M. Bölting, N. Er, Ch. Schmidt, Mikhail Korzhik, V. Astakhov, Konstantin Beloborodov, H. Denizli, T. Saito, R. Hagdorn, Pawel Marciniewski, D. Veretennikov, C. Morales Morales, Harphool Kumawat, Karin Schönning, Marek Idzik, M. O. Distler, A. Golubev, E. Ladygina, G. Kozlov, Tobias Stockmanns, C. Hahn, N. Cao, T. Sefzick, Giovanni Lancioni, V. Serdyuk, B. Ketzer, Jerzy Smyrski, D. Bonaventura, P. Wüstner, Yu. Yu. Lobanov, V. Pothodi Chackara, Mariana Nanova, B. Salisbury, E. A. Kravchenko, L. Tomasek, D. Bumrungkoh, Patrick Achenbach, W. Alkakhi, V. Uzhinsky, Y. Goncharenko, Harald Merkel, A. Atac, D. Rodríguez Piñeiro, A. Verkheev, P. Fedorets, S. Nakhoul, F. H. Heinsius, Q. Hu, N. B. Skachkov, S. Pongampai, R. Schmitz, E. A. Strokovsky, Zhiyong Liu, H. Peng, V. Arefiev, K. Föhl, D. Liu, P. Semenov, V. Rodin, Keval Gandhi, P. Kulessa, O. Miklukho, A. Vasiliev, P. Brand, A. A. Zhdanov, R. Kliemt, P. Grasemann, A. Yu. Barnyakov, Z. Li, A. Meschanin, Michael Düren, S. Ahmed, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), PANDA, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), BAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümü, Denizli, Haluk, and 0-Belirlenecek

Subjects
+Antixi+Xi%22">anti-p p --> Antixi Xi, Hadron, hyperon: pair production, correction: efficiency, 01 natural sciences, 13.30.-a, symmetry: CP, High Energy Physics - Experiment, Subatomär fysik, benchmark, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Electromagnetic Form-Factors, Nuclear Experiment, Spin-½, Physics, Antihyperon Production, Hyperon, PANDA, strong interaction, Observable, hyperon: production, 13.88.+, +Antilambda+Lambda%22">anti-p p --> Antilambda Lambda, Production (computer science), Low-Energy, Nuclear and High Energy Physics, Particle physics, Cp-Violation, +Lambda+pi%22">Xi- --> Lambda pi, Bar (music), spin: correlation, Strong interaction, Hyperons, nonperturbative, 13.60.R, hyperon: decay, 0103 physical sciences, anti-p p: scattering, ddc:530, anti-p: beam, 010306 general physics, polarization, 010308 nuclear & particles physics, background, High Energy Physics::Phenomenology, antihyperon, [No Keywords], Exchange, 13.75.-n, Decay, hyperon: ground state, Antiproton, High Energy Physics::Experiment
Abstract

The antiproton experiment PANDA at FAIR is designed to bring hadron physics to a new level in terms of scope, precision and accuracy. In this work, its unique capability for studies of hyperons is outlined. We discuss ground-state hyperons as diagnostic tools to study non-perturbative aspects of the strong interaction, and fundamental symmetries. New simulation studies have been carried out for two benchmark hyperon-antihyperon production channels: $\bar{p}p \to \bar{\Lambda}\Lambda$ and $\bar{p}p \to \bar{\Xi}^+\Xi^-$. The results, presented in detail in this paper, show that hyperon-antihyperon pairs from these reactions can be exclusively reconstructed with high efficiency and very low background contamination. In addition, the polarisation and spin correlations have been studied, exploiting the weak, self-analysing decay of hyperons and antihyperons. Two independent approaches to the finite efficiency have been applied and evaluated: one standard multidimensional efficiency correction approach, and one efficiency independent approach. The applicability of the latter was thoroughly evaluated for all channels, beam momenta and observables. The standard method yields good results in all cases, and shows that spin observables can be studied with high precision and accuracy already in the first phase of data taking with PANDA., Comment: 26 pages, 16 figures. Changes: Revised title and abstract and corrections/clarifications in the text according to suggestions by journal referees

Published
2021

5. Study of excited $$arvec{arXi }$$ baryons with the $$overline{ ext{ P }}$$ANDA detector

Author

Egle Tomasi-Gustafsson, R. Karabowicz, A. Kripko, M. Domagala, U. Müller, Pawel Marciniewski, D. Veretennikov, Xuan Zhang, Y. A. Tikhonov, A. Hamdi, J. Hofmann, A. Filippi, A. Golubev, Tobias Stockmanns, V. Abramov, C. Hahn, A. Belias, K. Nowakowski, V. Serdyuk, M. Pelizä, Z. Tavukoglu, B. Ketzer, Jerzy Smyrski, J. Pütz, O. Malyshev, U. Kurilla, Konstantin Beloborodov, V. Chauhan, R. W. Novotny, A. Kantsyrev, P. Balanutsa, B. J. Liu, D. G. Ireland, Petr Gallus, G. D. Alexeev, D. Bonaventura, A. V. Stavinskiy, C. Motzko, K.-T. Brinkmann, H. Denizli, V. Crede, I. Zimmermann, E.K. Koshurnikov, Jize Zhao, R. Dzhygadlo, Kazem Azizi, A. Chlopik, Fabrizio Daví, V. Ferapontov, D. Y. Kirin, P. Wüstner, M. Fritsch, N. I. Zhuravlev, D. Rodríguez Piñeiro, Dan Pantea, A. Täschner, W. Eyrich, T. Held, W. Esmail, T. Triffterer, V. V. Tokmenin, K. Manasatitpong, W. Kühn, A. Khoukaz, A. Ali, Alexander Olshevskiy, S. Koch, J. Rieger, R. Hagdorn, S. Godre, V. Lucherini, T. Erlen, Herbert Koch, Y. K. Sun, Mariana Nanova, A. Verkheev, M. Marcisovsky, P. Fedorets, Yan Liang, Claude Amsler, M. Slunecka, S. Nakhoul, J. Müllers, Krisztian Peters, J. Oppotsch, A. Malige, N. Hüsken, B. Salisbury, G. Huang, S. Sun, F. Nerling, A. A. Piskun, F. H. Heinsius, G. Mazza, S. I. Manaenkov, O. Noll, A. T. Olgun, E. Antokhin, A. Gerasimov, S. Spataro, P. Salabura, D. Bumrungkoh, Q. Hu, Kamal K. Seth, D. P. Watts, S. Shimanski, V. Uzhinsky, M. Krebs, S. Bodenschatz, Karin Schönning, C. Yu, G. Perez-Andrade, G. Boca, Krzysztof Swientek, V. E. Blinov, P. De Remigis, C. J. Schmidt, Paolo Mengucci, Christoph Herold, F. Lisowski, E. A. Strokovsky, N. B. Skachkov, Y. Goncharenko, Harald Merkel, Lennart Isaksson, S. Maldaner, S. Pongampai, F. Khalid, W. Lauth, F. Feldbauer, G. Reicherz, Volker Metag, C. Mannweiler, M. Moritz, L. Montalto, Piotr Lebiedowicz, D. Prasuhn, A. Scholl, Michaela Thiel, R. Schmitz, S. Pflüger, J. Kannika, M. Albrecht, M. Volf, V.Kh. Dodokhov, P. Poznański, Marek Idzik, M. O. Distler, I. Shein, T. Wasem, J. Schwiening, T. Sefzick, Giovanni Lancioni, J. Tarasiuk, E. Ladygina, Hans-Georg Zaunick, A. E. Blinov, N. Wongprachanukul, W. Schäfer, S. Schadmand, G. Schepers, Yu. Yu. Lobanov, I. Augustin, Mathias Fink, D. Lehmann, P. Terlecki, P. Eugenio, Concettina Sfienti, S. Poslavskiy, M. Virius, S. Schlimme, C. Schwarz, Andreas Martin Heinz, Andrey Uzunian, B. Zwieglinski, M. Lattery, A. E. Yakutin, P.-E. Tegnér, H. Peng, J. Pereira-de-Lira, Ting Xiao, A.A. Efremov, James Ritman, L. Brück, Antonin Kveton, V. Mochalov, V. M. Abazov, S. Wolff, E. A. Kravchenko, E. Prencipe, F. E. Maas, R. Beck, Krzysztof Korcyl, Lorenzo Scalise, Gianangelo Bracco, L. Tomasek, Patrick Achenbach, A. Derevschikov, E. Vishnevsky, D. Melnychuk, M. Firlej, P. Srisawad, A. Dbeyssi, J. Petersen, I. Köseoglu, D. Miehling, M. Bölting, J. Regina, P. Wintz, J. Reher, W. Alkakhi, H. H. Leithoff, S. Bleser, S. Kegel, N. Er, S. Pankonin, Antoni Szczurek, D. Kazlou, M. Yu. Barabanov, Dirk Grunwald, L. Capozza, L. Linzen, D. Liu, V. Freudenreich, A. Ehret, C. Liu, Yupeng Yan, P. Gianotti, R. Dosdall, Ch. Schmidt, M. Steinen, Y. Zhou, A. Demekhin, A. Galoyan, M. Preston, Zhengtai Liu, T. Holtmann, Paweł Moskal, Mikhail Korzhik, A. Boukharov, D. Klostermann, S. Orfanitski, E. Pyata, P. P. Natali, G. Golovanov, M. Pesek, Ch. Hammann, C. Schnier, J. G. Messchendorp, P. Semenov, V. Rodin, Valentino Rigato, B. Kopf, Keval Gandhi, Daniel Duda, Andrea Bianconi, D. I. Glazier, A. Gillitzer, A. Akram, H. Flemming, M. Kümmel, M. Steinke, I. A. Kuyanov, N. Rathod, D. Calvo, D. Wölbing, R. Böhm, Ali Yilmaz, F. Schupp, Sean A Dobbs, J. Pochodzalla, U. Lynen, S. Chernichenko, B. Krusche, Felice Iazzi, Richard Wheadon, X. Y. Shen, L. Jokhovets, S.G. Pivovarov, R. Kappert, A. Lehmann, Ayut Limphirat, P. Kulessa, I. Lehmann, Andrea Lavagno, N. Kristi, T. Nasawad, A. Dolgolenko, M. Peskova, J. Płażek, Tomasz Fiutowski, L. Nogach, G. V. Fedotov, E. Luschevskaya, E. Maslova, R. Lalik, K. Khosonthongkee, C. Wenzel, M. Pfaffinger, Grzegorz Korcyl, O. Miklukho, A. N. Skachkova, Edward Lisowski, V. Jary, M. Kavatsyuk, M. Himmelreich, H. Deppe, A. G. Denig, A. Vasiliev, A. Derichs, J. Frech, A. Hayrapetyan, W. Zhu, Chinorat Kobdaj, P. Brand, E. Rosenthal, S. Belostotski, Ulrich Wiedner, A.S. Vodopianov, J. Kellers, U. Keskin, U. Thoma, R. Kliemt, A. Yu. Barnyakov, Bo Cederwall, K. Götzen, A. Meschanin, Michael Düren, Johann Marton, V. Chernetsky, Gianni Barucca, H. Loehner, Vaclav Vrba, M. Sachs, I. K. Keshk, Xi-Guang Cao, M. Traxler, S. Diehl, Andrew Levin, M.P. Bussa, S. Yerlikaya, Nicola Paone, A. Samartsev, P. Jiang, A. Fechtchenko, L. Schmitt, Michael Papenbrock, Bernd Voss, B. Hetz, Daniele Rinaldi, V. Moiseev, Magnus Wolke, V. Varentsov, M. Schmidt, N. Minaev, A. Balashoff, Mohammed Al-Turany, Andrzej Kupsc, P. Orsich, M. Steinacher, M. Finger, V. Panjushkin, H. Xu, M. Michałek, S. Bökelmann, S. Wronka, Andrey V. Izotov, M. Bukharova, G. Neue, R. Schubert, M. Tomasek, D. A. Morozov, S. Zimmermann, J. Grochowski, P. Wieczorek, S. Ryzhikov, M. Hoek, A. Gerhardt, H. Qi, Jens Hartmann, B. Seitz, S. Bukreeva, X. Zhou, G. Kesik, I. Prochazka, Mario Bragadireanu, K. Pysz, S. Coen, O. Korchak, K. Kalita, M. Küßner, O. Corell, T. Johansson, A. Ryazantsev, Y. Melnik, V. A. Matveev, S.A. Kononov, H. Orth, Hans Calén, M. Urban, G. Zhao, Witold Przygoda, T. Simantathammakul, J. Moron, J. Li, Oleg V. Missevitch, Frank Goldenbaum, Ajay Kumar Rai, M. Strickert, M. Böhm, Grzegorz Filo, M. Kunze, W. Ikegami Andersson, R. Klasen, S. Vestrick, Paul Alois Buhler, J. Lühning, J. Novy, Valery Dormenev, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
Nuclear and High Energy Physics, hyperon: particle source, Hadron, Type (model theory), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, decay modes, Combinatorics, Tree (descriptive set theory), excited state: spectrum, 0103 physical sciences, ddc:530, structure, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, baryon: excited state, Spectrum (functional analysis), Hyperon, anti-p, Baryon, statistics, efficiency, Excited state, Production (computer science), acceptance
Abstract

The European physical journal / A 57(4), 149 (2021). doi:10.1140/epja/s10050-021-00444-5, Published by Springer, Heidelberg

Published
2021

6. PANDA Phase One: PANDA collaboration

Author

R. Klasen, S. Vestrick, Grzegorz Filo, S. Diehl, M. Kunze, W. Ikegami Andersson, A. V. Stavinskiy, Yupeng Yan, Felice Iazzi, D. Rodríguez Piñeiro, J. Müllers, Andrew Levin, Paul Alois Buhler, J. Lühning, J. Novy, Valery Dormenev, James Ritman, Piotr Lebiedowicz, L. Montalto, M. Küßner, A. Scholl, Frank Goldenbaum, Ali Yilmaz, Yan Liang, W. Esmail, M.P. Bussa, A. Ali, L. Jokhovets, S.G. Pivovarov, D. Bonaventura, A. Verkheev, S. Rimjaem, M. Preston, A. T. Olgun, Konstantin Beloborodov, P. Fedorets, A. Hamdi, M. Volf, S. Yerlikaya, S. Nakhoul, J. Kannika, O. Corell, A. Vasiliev, G. Mazza, E. Antokhin, A. Gerasimov, Egle Tomasi-Gustafsson, J. Hofmann, R. Karabowicz, V.Kh. Dodokhov, A. E. Blinov, P.-E. Tegnér, Andrey Uzunian, S. Wolff, M. Steinen, L. Linzen, Y. Zhou, F. H. Heinsius, Zhengtai Liu, P. De Remigis, C. J. Schmidt, I. Lehmann, H. Denizli, H. Deppe, Ajay Kumar Rai, T. Johansson, T. Holtmann, A. G. Denig, V. Panjushkin, J. Frech, A. Hayrapetyan, W. Zhu, L. Nogach, E. Vishnevsky, D. Melnychuk, Q. Hu, I. Köseoglu, Andrea Bianconi, J. Pereira-de-Lira, A. Derevschikov, A. Belias, O. Malyshev, D. Miehling, Nicola Paone, K. Pysz, A. Ryazantsev, D. I. Glazier, G. Reicherz, R. Hagdorn, M. Strickert, M. Böhm, Chinorat Kobdaj, P. Brand, Vladimir Blinov, P. Wüstner, X. Y. Shen, Paolo Mengucci, Christoph Herold, M. Pelizäus, G. V. Fedotov, T. Nasawad, A. Dolgolenko, N. B. Skachkov, S. Pongampai, S. Coen, Y. Melnik, V. A. Matveev, U. Kurilla, V. Jary, B. Zwieglinski, F. Khalid, A. Gillitzer, D. Calvo, Andreas Martin Heinz, M. Kavatsyuk, Mariana Nanova, S. Belostotski, K. Nowakowski, Claude Amsler, T. Erlen, K. Kalita, M. Domagala, A. Derichs, Ulrich Wiedner, E. Prencipe, L. Brück, R. Schmitz, Antonin Kveton, V. Mochalov, A.S. Vodopianov, J. Kellers, J. Rieger, G. Huang, N. Wongprachanukul, Bo Cederwall, K. Götzen, A. N. Skachkova, Edward Lisowski, J. Pütz, U. Müller, C. Motzko, K.-T. Brinkmann, S.A. Kononov, Dirk Grunwald, G. Neue, U. Thoma, R. Lalik, A. Kantsyrev, S. Sun, M. Virius, B. Salisbury, J. Oppotsch, Jize Zhao, R. Dzhygadlo, T. Held, F. Nerling, G. D. Alexeev, M. Bölting, A. Boukharov, G. Golovanov, I. Zimmermann, N. Er, A. Malige, S. Godre, Ting Xiao, M. Wojciechowski, Ch. Schmidt, T. Simantathammakul, B. Seitz, P. Balanutsa, B. J. Liu, V. Crede, M. Krebs, E. Rosenthal, Y. K. Sun, D. G. Ireland, W. Kühn, V. Abramov, Z. Tavukoglu, Mikhail Korzhik, A. Kripko, S. Spataro, D. Bumrungkoh, V. M. Abazov, R. Schubert, H. Flemming, Vaclav Vrba, S. I. Manaenkov, S. Kegel, A. Lehmann, U. Keskin, Hans-Georg Zaunick, R. Kliemt, V. Uzhinsky, Karin Schönning, X. Zhou, R. Böhm, S. Maldaner, J. Moron, D. P. Watts, E.K. Koshurnikov, M. Slunecka, P. Poznański, M. Firlej, P. Srisawad, A. Yu. Barnyakov, D. Kazlou, M. Yu. Barabanov, J. Płażek, V. Chauhan, R. W. Novotny, S. Schlimme, C. Schwarz, Y. Goncharenko, Lennart Isaksson, P. Eugenio, Kamal K. Seth, Concettina Sfienti, Harald Merkel, H. Xu, A. Meschanin, Marek Idzik, Mario Bragadireanu, Kazem Azizi, M. Lattery, C. Yu, G. Perez-Andrade, G. Boca, C. Liu, A. Chlopik, Johann Marton, Jens Hartmann, A. Samartsev, M. O. Distler, Dan Pantea, W. Eyrich, P. Gianotti, J. Li, E. Ladygina, Michael Düren, M. Albrecht, M. Tomasek, J. Regina, Michaela Thiel, I. Shein, L. Capozza, V. Chernetsky, Y. A. Tikhonov, Oleg V. Missevitch, V. Lucherini, Lorenzo Scalise, Fabrizio Daví, J. Petersen, F. E. Maas, A. Filippi, Gianni Barucca, T. Wasem, J. Reher, J. Schwiening, P. Wintz, O. Korchak, M. Marcisovsky, Volker Metag, S. Zimmermann, N. Hüsken, S. Pankonin, P. Jiang, Antoni Szczurek, C. Schnier, H. Orth, S. Bukreeva, H. Loehner, S. Orfanitski, D. Lehmann, C. Mannweiler, V. Ferapontov, D. Y. Kirin, M. Moritz, C. Hahn, D. A. Morozov, J. Grochowski, A. A. Piskun, Hans Calén, Christoph Hanhart, S. Bodenschatz, J. Tarasiuk, Christian S. Fischer, M. Urban, G. Zhao, T. Sefzick, A. Demekhin, P. Wieczorek, Giovanni Lancioni, Daniel Duda, M. Hoek, A. Akram, S. Ryzhikov, Yu. Yu. Lobanov, E. A. Strokovsky, A. Galoyan, F. Feldbauer, S. Shimanski, A.A. Efremov, Paweł Moskal, H. Peng, G. Kesik, S. Schadmand, B. Kopf, G. Schepers, B. Krusche, J. G. Messchendorp, V. V. Tokmenin, K. Manasatitpong, A. Dbeyssi, M. Fritsch, Witold Przygoda, S. Poslavskiy, Valentino Rigato, A. Khoukaz, M. Kümmel, D. Klostermann, S. Koch, E. A. Kravchenko, M. Sachs, Ayut Limphirat, L. Tomasek, I. K. Keshk, D. Liu, P. P. Natali, A. Gerhardt, H. Qi, I. A. Kuyanov, Patrick Achenbach, Alexander Olshevskiy, W. Alkakhi, N. Kristi, H. H. Leithoff, N. I. Zhuravlev, P. Semenov, V. Rodin, Keval Gandhi, E. Maslova, Xi-Guang Cao, M. Traxler, Herbert Koch, A. Täschner, Grzegorz Korcyl, Krisztian Peters, P. Kulessa, Sinead M. Ryan, F. Schupp, Sean A Dobbs, J. Pochodzalla, M. Himmelreich, S. Chernichenko, O. Noll, T. Triffterer, F. Lisowski, P. Salabura, Krzysztof Swientek, Pawel Marciniewski, D. Veretennikov, W. Lauth, Xuan Zhang, I. Prochazka, D. Prasuhn, Johann Haidenbauer, S. Pflüger, W. Schäfer, A. Golubev, Tobias Stockmanns, S. Bleser, V. Serdyuk, M. Michałek, B. Ketzer, Jerzy Smyrski, S. Bökelmann, V. Freudenreich, A. Ehret, S. Wronka, R. Kappert, Andrey V. Izotov, M. Bukharova, E. Luschevskaya, K. Khosonthongkee, C. Wenzel, M. Pfaffinger, E. Pyata, Ch. Hammann, M. Steinke, A. Fechtchenko, L. Schmitt, Michael Papenbrock, N. Rathod, D. Wölbing, Richard Wheadon, U. Lynen, Andrea Lavagno, M.F.M. Lutz, Bernd Voss, B. Hetz, Daniele Rinaldi, Tomasz Fiutowski, V. Moiseev, Magnus Wolke, V. Varentsov, M. Schmidt, N. Minaev, A. Balashoff, Mohammed Al-Turany, Andrzej Kupsc, P. Orsich, M. Steinacher, M. Finger, I. Augustin, Mathias Fink, P. Terlecki, A. E. Yakutin, R. Beck, Krzysztof Korcyl, Gianangelo Bracco, R. Dosdall, and O. Miklukho

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Physics beyond the Standard Model, Hadron, Detector, Strong interaction, 01 natural sciences, Antiproton, 0103 physical sciences, Facility for Antiproton and Ion Research, 010306 general physics, Nuclear Experiment, Storage ring
Abstract

The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or $$\overline{\mathrm{P}}$$ P ¯ ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-perturbative regime remains one of the greatest challenges in contemporary physics. The antiproton–nucleon interaction studied with PANDA provides crucial tests in this area. Furthermore, the high-intensity, low-energy domain of PANDA allows for searches for physics beyond the Standard Model, e.g. through high precision symmetry tests. This paper takes into account a staged approach for the detector setup and for the delivered luminosity from the accelerator. The available detector setup at the time of the delivery of the first antiproton beams in the HESR storage ring is referred to as the Phase One setup. The physics programme that is achievable during Phase One is outlined in this paper.

Published
2021

7. The Endcap Disc DIRC of PANDA

Author

M. Schmidt, J. Rieke, Michaela Thiel, T. Wasem, J. Schwiening, D. Lehmann, M. Traxler, F. Uhlig, A. Lehmann, G. Kalicy, Euan N. Cowie, W. Eyrich, K. Peters, A. Gerhardt, S. Schlimme, C. Schwarz, Concettina Sfienti, M. Pfaffinger, M. Zühlsdorf, B. Kröck, A. Hayrapetyan, F. Nerling, A. Belias, A. Britting, M. Krebs, M. Patsyuk, Michael Düren, T. Keri, Patrick Achenbach, K. Föhl, E. Etzelmüller, W. Lauth, O. Merle, M. Hoek, R. Dzhygadlo, G. Schepers, K. Götzen, L. Schmitt, and M. Cardinali

Subjects
Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Cherenkov detector, Monte Carlo method, 01 natural sciences, Particle identification, Particle detector, 030218 nuclear medicine & medical imaging, law.invention, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, Optics, law, 0103 physical sciences, Angular resolution, Nuclear Experiment, Instrumentation, Cherenkov radiation, Physics, 010308 nuclear & particles physics, business.industry, Detector, High Energy Physics::Experiment, business
Abstract

The Endcap Disc DIRC (EDD) for PANDA has been designed to identify traversing pions, kaons and protons in the future PANDA experiment. Its central part is a 2 cm thick fused silica plate. Focussing optics are attached to the outer rim of the plate, outside of the acceptance of the experiment. Fast, high-resolution MCP-PMTs, designed to register single Cherenkov photons, have been tested in magnetic field. Filters limit the spectral acceptance of the sensors to reduce dispersion effects and to extend their lifetime. A compact and fast readout is realized with ASICs. Analytical reconstruction algorithms allow for fast particle identification. The angular resolution of a DIRC prototype has been simulated in Monte Carlo and confirmed in a test beam. The final detector will be able to provide a 4 σ π / K separation up to a momentum of 4 GeV / c .

Published
2017

8. Recent developments with microchannel-plate PMTs

Author

A. Hayrapetyan, A. Lehmann, O. Merle, M. Zühlsdorf, F. Uhlig, L. Schmitt, W. Eyrich, A. Belias, Euan N. Cowie, Michaela Thiel, T. Wasem, J. Schwiening, D. Lehmann, A. Gerhardt, F. Nerling, M. Hoek, S. Schlimme, C. Schwarz, M. Cardinali, B. Kröck, M. Krebs, K. Föhl, R. Dzhygadlo, T. Keri, A. Britting, M. Schmidt, Concettina Sfienti, Michael Düren, K. Götzen, M. Traxler, M. Pfaffinger, J. Rieke, M. Patsyuk, M. Böhm, Patrick Achenbach, K. Peters, G. Kalicy, E. Etzelmüller, W. Lauth, and G. Schepers

Subjects
Physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, business.industry, Detector, 01 natural sciences, Cathode, 030218 nuclear medicine & medical imaging, Anode, law.invention, 03 medical and health sciences, Wavelength, Atomic layer deposition, 0302 clinical medicine, Optics, law, 0103 physical sciences, Quantum efficiency, Microchannel plate detector, business, Instrumentation
Abstract

Microchannel-plate (MCP) PMTs are the favored photon sensors for the DIRC detectors of the PANDA experiment at FAIR. Until recently the main drawback of MCP-PMTs were serious aging effects which led to a limited lifetime due to a rapidly decreasing quantum efficiency (QE) of the photo cathode (PC) as the integrated anode charge (IAC) increased. In the latest models of PHOTONIS and Hamamatsu an innovative atomic layer deposition (ALD) technique is applied to overcome these limitations. During the last five years comprehensive aging tests with ALD coated MCP-PMTs were performed and the results were compared to tubes treated with other techniques. The QE in dependence of the IAC was measured as a function of the wavelength and the position across the PC. For the best performing tubes the lifetime improvement in comparison to the older MCP-PMTs is a factor of > 50 based on an IAC of meanwhile > 10 C / cm 2 . In addition, the performance results of a new 2-in. ALD coated MCP-PMT prototype from Hamamatsu with a very high position resolution (128×6 anode pixels) is presented and the first conclusions from investigations concerning the PC aging mechanism will be discussed.

Published
2017

9. Tremendously increased lifetime of MCP-PMTs

Author

S. Schlimme, C. Schwarz, Michael Düren, A. Gerhardt, Euan N. Cowie, K. Föhl, A. Belias, Michaela Thiel, J. Schwiening, D. Lehmann, T. Keri, Concettina Sfienti, G. Kalicy, R. Dzhygadlo, M. Hoek, M. Patsyuk, J. Rieke, K. Götzen, A. Britting, W. Eyrich, A. Lehmann, M. Schmidt, A. Hayrapetyan, M. Krebs, B. Kröck, M. Traxler, O. Merle, F. Uhlig, M. Pfaffinger, L. Schmitt, G. Schepers, M. Cardinali, E. Etzelmüller, W. Lauth, F. Nerling, K. Peters, Patrick Achenbach, and M. Zühlsdorf

Subjects
Physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, business.industry, engineering.material, 01 natural sciences, Cathode, 030218 nuclear medicine & medical imaging, Anode, Ion, law.invention, 03 medical and health sciences, Atomic layer deposition, 0302 clinical medicine, Optics, Coating, law, 0103 physical sciences, engineering, Quantum efficiency, Microchannel plate detector, business, Instrumentation
Abstract

Microchannel plate (MCP) PMTs are very attractive photon sensors for low light level applications in strong magnetic fields. However, until recently the main drawback of MCP-PMTs was their aging behavior which manifests itself in a limited lifetime due to a rapidly decreasing quantum efficiency (QE) of the photo cathode (PC) as the integrated anode charge (IAC) increases. In the latest models of PHOTONIS, Hamamatsu, and BINP novel techniques are applied to avoid these aging effects which are supposed to be mainly caused by feedback ion impinging on the PC and damaging it. For more than four years we are running a long-term aging test with new lifetime-enhanced MCP-PMT models by simultaneously illuminating various PMTs with roughly the same photon rate. This allows a fair comparison of the lifetime of all investigated MCP-PMTs and will give some insight into the best techniques to be applied for a lifetime enhancement. In this paper the results of comprehensive aging tests will be discussed. Gain, dark count rate and QE were investigated for their dependence on the IAC. The QE was measured spectrally resolved and as a function of the position across the PC to identify regions where the damage develops first. For the best performing tubes the lifetime improvement compared to former MCP-PMTs is a factor of ∼ 50 based on an IAC of meanwhile > 10 C / cm 2 . This breakthrough in the lifetime of MCP-PMTs was achieved by coating the MCP pores with an atomic layer deposition (ALD) technique.

Published
2017

10. Precision spectroscopy of charmonium-like (exotic) XYZ states at PANDA/FAIR

Author

Frank Nerling, K. Götzen, K. Peters, and R. Kliemt

Subjects
Physics, Particle physics, Precision spectroscopy, ddc:530
Abstract

Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018) - Sissa Medialab Trieste, Italy, 2019. - ISBN - doi:10.22323/1.336.0120 XIII Quark Confinement and the Hadron Spectrum, Maynooth University, Ireland, 31 Jul 2019 - 6 Aug 2019; Sissa Medialab Trieste, Italy 120-127 (2019). doi:10.22323/1.336.0120, Published by Sissa Medialab Trieste, Italy

Published
2019
Full Text
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11. Technical design report for the $\overline{{\rm{P}}}\mathrm{ANDA}$ Barrel DIRC detector

Author

B Singh, W Erni, B Krusche, M Steinacher, N Walford, B Liu, H Liu, Z Liu, X Shen, C Wang, J Zhao, M Albrecht, T Erlen, F Feldbauer, M Fink, M Fritsch, J Haase, F H Heinsius, T Held, T Holtmann, I Keshk, H Koch, B Kopf, M Kuhlmann, M Kümmel, S Leiber, M Mikirtychyants, P Musiol, A Mustafa, M Pelizäus, A Pitka, J Pychy, M Richter, C Schnier, T Schröder, C Sowa, M Steinke, T Triffterer, U Wiedner, M Ball, R Beck, C Hammann, B Ketzer, M Kube, P Mahlberg, M Rossbach, C Schmidt, R Schmitz, U Thoma, M Urban, D Walther, C Wendel, A Wilson, A Bianconi, M Bragadireanu, D Pantea, B Patel, W Czyzycki, M Domagala, G Filo, J Jaworowski, M Krawczyk, E Lisowski, F Lisowski, M Michałek, P Poznański, J Płażek, K Korcyl, A Kozela, P Kulessa, P Lebiedowicz, K Pysz, W Schäfer, A Szczurek, T Fiutowski, M Idzik, B Mindur, K Swientek, J Biernat, B Kamys, S Kistryn, G Korcyl, W Krzemien, A Magiera, P Moskal, A Pyszniak, Z Rudy, P Salabura, J Smyrski, P Strzempek, A Wronska, I Augustin, R Böhm, I Lehmann, D Nicmorus Marinescu, L Schmitt, V Varentsov, A Ali, M Al-Turany, A Belias, H Deppe, N Divani Veis, R Dzhygadlo, H Flemming, A Gerhardt, K Götzen, A Gromliuk, L Gruber, R Hohler, G Kalicy, R Karabowicz, R Kliemt, M Krebs, U Kurilla, D Lehmann, S Löchner, J Lühning, U Lynen, F Nerling, H Orth, M Patsyuk, K Peters, T Saito, G Schepers, C J Schmidt, C Schwarz, J Schwiening, A Täschner, M Traxler, C Ugur, B Voss, P Wieczorek, A Wilms, M Zühlsdorf, V Abazov, G Alexeev, V A Arefiev, V Astakhov, M Yu Barabanov, B V Batyunya, Y Davydov, V Kh Dodokhov, A Efremov, A Fechtchenko, A G Fedunov, A Galoyan, S Grigoryan, E K Koshurnikov, Y Yu Lobanov, V I Lobanov, A F Makarov, L V Malinina, V Malyshev, A G Olshevskiy, E Perevalova, A A Piskun, T Pocheptsov, G Pontecorvo, V Rodionov, Y Rogov, R Salmin, A Samartsev, M G Sapozhnikov, G Shabratova, N B Skachkov, A N Skachkova, E A Strokovsky, M Suleimanov, R Teshev, V Tokmenin, V Uzhinsky, A Vodopianov, S A Zaporozhets, N I Zhuravlev, A Zinchenko, D Branford, D Glazier, D Watts, M Böhm, A Britting, W Eyrich, A Lehmann, M Pfaffinger, F Uhlig, S Dobbs, K Seth, A Tomaradze, T Xiao, D Bettoni, V Carassiti, A Cotta Ramusino, P Dalpiaz, A Drago, E Fioravanti, I Garzia, M Savrie, V Akishina, S Gorbunov, I Kisel, G Kozlov, M Pugach, M Zyzak, P Gianotti, C Guaraldo, V Lucherini, A Bersani, G Bracco, M Macri, R F Parodi, K Biguenko, K T Brinkmann, V Di Pietro, S Diehl, V Dormenev, M Düren, E Etzelmüller, K Föhl, M Galuska, E Gutz, C Hahn, A Hayrapetyan, M Kesselkaul, K Kreutzfeldt, W Kühn, T Kuske, J S Lange, Y Liang, V Metag, M Moritz, M Nanova, R Novotny, T Quagli, S Reiter, A Riccardi, J Rieke, C Rosenbaum, M Schmidt, R Schnell, H Stenzel, U Thöring, M N Wagner, T Wasem, B Wohlfahrt, H G Zaunick, E Tomasi-Gustafsson, D Ireland, G Rosner, B Seitz, P N Deepak, A Kulkarni, A Apostolou, M Babai, M Kavatsyuk, P J Lemmens, M Lindemulder, H Loehner, J Messchendorp, P Schakel, H Smit, M Tiemens, J C van der Weele, R Veenstra, S Vejdani, K Dutta, K Kalita, A Kumar, A Roy, H Sohlbach, M Bai, L Bianchi, M Büscher, L Cao, A Cebulla, R Dosdall, A Erven, V Fracassi, A Gillitzer, F Goldenbaum, D Grunwald, A Herten, Q Hu, L Jokhovets, G Kemmerling, H Kleines, A Lai, A Lehrach, R Nellen, H Ohm, S Orfanitski, D Prasuhn, E Prencipe, J Pütz, J Ritman, E Rosenthal, S Schadmand, T Sefzick, V Serdyuk, G Sterzenbach, T Stockmanns, P Wintz, P Wüstner, H Xu, S Li, Z Li, Z Sun, V Rigato, L Isaksson, P Achenbach, A Aycock, O Corell, A Denig, M Distler, M Hoek, A Karavdina, W Lauth, H Merkel, U Müller, J Pochodzalla, S Sanchez, S Schlimme, C Sfienti, M Thiel, H Ahmadi, null S Ahmed, S Bleser, L Capozza, M Cardinali, A Dbeyssi, M Deiseroth, A Ehret, B Fröhlich, D Kang, D Khaneft, R Klasen, H H Leithoff, D Lin, F Maas, S Maldaner, M Martínez, M Michel, M C Mora Espí, C Morales Morales, C Motzko, O Noll, S Pflüger, D Rodríguez Piñeiro, A Sanchez-Lorente, M Steinen, R Valente, M Zambrana, I Zimmermann, A Fedorov, M Korjik, O Missevitch, A Balashoff, A Boukharov, O Malyshev, I Marishev, P Balanutsa, V Balanutsa, V Chernetsky, A Demekhin, A Dolgolenko, P Fedorets, A Gerasimov, V Goryachev, V Chandratre, V Datar, D Dutta, V Jha, H Kumawat, A K Mohanty, A Parmar, A K Rai, B Roy, G Sonika, C Fritzsch, S Grieser, A K Hergemöller, B Hetz, N Hüsken, A Khoukaz, J P Wessels, K Khosonthongkee, C Kobdaj, A Limphirat, P Srisawad, Y Yan, E Antokhin, A Yu Barnyakov, M Barnyakov, K Beloborodov, V E Blinov, V S Bobrovnikov, I A Kuyanov, K Martin, A P Onuchin, S Pivovarov, E Pyata, S Serednyakov, A Sokolov, Y Tikhonov, A E Blinov, S Kononov, E A Kravchenko, E Atomssa, R Kunne, D Marchand, B Ramstein, J van de Wiele, Y Wang, G Boca, S Costanza, P Genova, P Montagna, A Rotondi, M Bodlak, M Finger, A Nikolovova, M Pesek, M Peskova, M Pfeffer, I Prochazka, M Slunecka, P Gallus, V Jary, J Novy, M Tomasek, M Virius, V Vrba, V Abramov, N Belikov, S Bukreeva, A Davidenko, A Derevschikov, Y Goncharenko, V Grishin, V Kachanov, V Kormilitsin, A Levin, Y Melnik, N Minaev, V Mochalov, D Morozov, L Nogach, S Poslavskiy, A Ryazantsev, S Ryzhikov, P Semenov, I Shein, A Uzunian, A Vasiliev, A Yakutin, U Roy, B Yabsley, S Belostotski, G Gavrilov, A Izotov, S Manaenkov, O Miklukho, D Veretennikov, A Zhdanov, K Makonyi, M Preston, P E Tegner, D Wölbing, T Bäck, B Cederwall, S Godre, F Balestra, F Iazzi, R Introzzi, A Lavagno, J Olave, A Amoroso, M P Bussa, L Busso, M Destefanis, L Fava, L Ferrero, M Greco, J Hu, L Lavezzi, M Maggiora, G Maniscalco, S Marcello, S Sosio, S Spataro, D Calvo, S Coli, P De Remigis, A Filippi, G Giraudo, S Lusso, G Mazza, M Mignone, A Rivetti, R Wheadon, R Birsa, F Bradamante, A Bressan, A Martin, H Calen, W Ikegami Andersson, T Johansson, A Kupsc, P Marciniewski, M Papenbrock, J Pettersson, K Schönning, M Wolke, B Galnander, J Diaz, V Pothodi Chackara, A Chlopik, G Kesik, D Melnychuk, B Slowinski, A Trzcinski, M Wojciechowski, S Wronka, B Zwieglinski, P Bühler, J Marton, D Steinschaden, K Suzuki, E Widmann, S Zimmermann, and J Zmeskal

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Large Hadron Collider, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Hadron, Detector, Barrel (horology), 7. Clean energy, 01 natural sciences, Ring-imaging Cherenkov detector, Particle identification, Charged particle, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, ddc:530, 010306 general physics, Nuclear Experiment
Abstract

The $\overline{{\rm{P}}}\mathrm{ANDA}$ (anti-Proton ANnihiliation at DArmstadt) experiment will be one of the four flagship experiments at the new international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. $\overline{{\rm{P}}}\mathrm{ANDA}$ will address fundamental questions of hadron physics and quantum chromodynamics using high-intensity cooled antiproton beams with momenta between 1.5 and 15 GeV/c and a design luminosity of up to 2 × 1032 cm−2 s−1. Excellent particle identification (PID) is crucial to the success of the $\overline{{\rm{P}}}\mathrm{ANDA}$ physics program. Hadronic PID in the barrel region of the target spectrometer will be performed by a fast and compact Cherenkov counter using the detection of internally reflected Cherenkov light (DIRC) technology. It is designed to cover the polar angle range from 22° to 140° and will provide at least 3 standard deviations (s.d.) π/K separation up to 3.5 GeV/c, matching the expected upper limit of the final state kaon momentum distribution from simulation. This documents describes the technical design and the expected performance of the $\overline{{\rm{P}}}\mathrm{ANDA}$ Barrel DIRC detector. The design is based on the successful BaBar DIRC with several key improvements. The performance and system cost were optimized in detailed detector simulations and validated with full system prototypes using particle beams at GSI and CERN. The final design meets or exceeds the PID goal of clean π/K separation with at least 3 s.d. over the entire phase space of charged kaons in the Barrel DIRC.

Published
2019

12. Study of doubly strange systems using stored antiprotons

Author

B. Singh, W. Erni, B. Krusche, M. Steinacher, N. Walford, B. Liu, H. Liu, Z. Liu, X. Shen, C. Wang, J. Zhao, M. Albrecht, T. Erlen, M. Fink, F. Heinsius, T. Held, T. Holtmann, S. Jasper, I. Keshk, H. Koch, B. Kopf, M. Kuhlmann, M. Kümmel, S. Leiber, M. Mikirtychyants, P. Musiol, A. Mustafa, M. Pelizäus, J. Pychy, M. Richter, C. Schnier, T. Schröder, C. Sowa, M. Steinke, T. Triffterer, U. Wiedner, M. Ball, R. Beck, C. Hammann, B. Ketzer, M. Kube, P. Mahlberg, M. Rossbach, C. Schmidt, R. Schmitz, U. Thoma, M. Urban, D. Walther, C. Wendel, A. Wilson, A. Bianconi, M. Bragadireanu, M. Caprini, D. Pantea, B. Patel, W. Czyzycki, M. Domagala, G. Filo, J. Jaworowski, M. Krawczyk, E. Lisowski, F. Lisowski, M. Michałek, P. Poznański, J. Płażek, K. Korcyl, A. Kozela, P. Kulessa, P. Lebiedowicz, K. Pysz, W. Schäfer, A. Szczurek, T. Fiutowski, M. Idzik, B. Mindur, D. Przyborowski, K. Swientek, J. Biernat, B. Kamys, S. Kistryn, G. Korcyl, W. Krzemien, A. Magiera, P. Moskal, A. Psyzniak, Z. Rudy, P. Salabura, J. Smyrski, P. Strzempek, A. Wronska, I. Augustin, R. Böhm, I. Lehmann, D. Nicmorus Marinescu, L. Schmitt, V. Varentsov, M. Al-Turany, A. Belias, H. Deppe, R. Dzhygadlo, A. Ehret, H. Flemming, A. Gerhardt, K. Götzen, A. Gromliuk, L. Gruber, R. Karabowicz, R. Kliemt, M. Krebs, U. Kurilla, D. Lehmann, S. Löchner, J. Lühning, U. Lynen, H. Orth, M. Patsyuk, K. Peters, T. Saito, G. Schepers, C.J. Schmidt, C. Schwarz, J. Schwiening, A. Täschner, M. Traxler, C. Ugur, B. Voss, P. Wieczorek, A. Wilms, M. Zühlsdorf, V.M. Abazov, G. Alexeev, A. Arefiev, V.I. Astakhov, M.Yu. Barabanov, B.V. Batyunya, Yu.I. Davydov, V.Kh. Dodokhov, A.A. Efremov, A. Fechtchenko, A.G. Fedunov, A. Galoyan, S. Grigoryan, E.K. Koshurnikov, V.I. Lobanov, Y.Yu. Lobanov, A.F. Makarov, L.V. Malinina, V.L. Malyshev, A. Olshevskiy, E. Perevalova, A.A. Piskun, T. Pocheptsov, G. Pontecorvo, V. Rodionov, Y. Rogov, R. Salmin, A. Samartsev, M.G. Sapozhnikov, G. Shabratova, N.B. Skachkov, A.N. Skachkova, E.A. Strokovsky, M. Suleimanov, R. Teshev, V. Tokmenin, V. Uzhinsky, A. Vodopyanov, S.A. Zaporozhets, N.I. Zhuravlev, A.G. Zorin, D. Branford, D. Glazier, D. Watts, M. Böhm, A. Britting, W. Eyrich, A. Lehmann, M. Pfaffinger, F. Uhlig, S. Dobbs, K. Seth, A. Tomaradze, T. Xiao, D. Bettoni, V. Carassiti, A. Cotta Ramusino, P. Dalpiaz, A. Drago, E. Fioravanti, I. Garzia, M. Savriè, V. Akishina, I. Kisel, G. Kozlov, M. Pugach, M. Zyzak, P. Gianotti, C. Guaraldo, V. Lucherini, A. Bersani, G. Bracco, M. Macri, R.F. Parodi, K. Biguenko, K. Brinkmann, V. Di Pietro, S. Diehl, V. Dormenev, P. Drexler, M. Düren, E. Etzelmüller, M. Galuska, E. Gutz, C. Hahn, A. Hayrapetyan, M. Kesselkaul, W. Kühn, T. Kuske, J.S. Lange, Y. Liang, V. Metag, M. Nanova, S. Nazarenko, R. Novotny, T. Quagli, S. Reiter, J. Rieke, C. Rosenbaum, M. Schmidt, R. Schnell, H. Stenzel, U. Thöring, M. Ullrich, M.N. Wagner, T. Wasem, B. Wohlfarth, H. Zaunick, D. Ireland, G. Rosner, B. Seitz, P.N. Deepak, A. Kulkarni, A. Apostolou, M. Babai, M. Kavatsyuk, P. Lemmens, M. Lindemulder, H. Loehner, J. Messchendorp, P. Schakel, H. Smit, M. Tiemens, J.C. van der Weele, R. Veenstra, S. Vejdani, K. Dutta, K. Kalita, A. Kumar, A. Roy, H. Sohlbach, M. Bai, L. Bianchi, M. Büscher, L. Cao, A. Cebulla, R. Dosdall, A. Gillitzer, F. Goldenbaum, D. Grunwald, A. Herten, Q. Hu, G. Kemmerling, H. Kleines, A. Lehrach, R. Nellen, H. Ohm, S. Orfanitski, D. Prasuhn, E. Prencipe, J. Pütz, J. Ritman, S. Schadmand, T. Sefzick, V. Serdyuk, G. Sterzenbach, T. Stockmanns, P. Wintz, P. Wüstner, H. Xu, A. Zambanini, S. Li, Z. Li, Z. Sun, V. Rigato, L. Isaksson, P. Achenbach, O. Corell, A. Denig, M. Distler, M. Hoek, A. Karavdina, W. Lauth, H. Merkel, U. Müller, J. Pochodzalla, S. Schlimme, C. Sfienti, M. Thiel, H. Ahmadi, S. Ahmed, S. Bleser, L. Capozza, M. Cardinali, A. Dbeyssi, M. Deiseroth, F. Feldbauer, M. Fritsch, B. Fröhlich, P. Jasinski, D. Kang, D. Khaneft, R. Klasen, H.H. Leithoff, D. Lin, F. Maas, S. Maldaner, M. Martìnez Rojo, M. Marta, M. Michel, M.C. Mora Espì, C. Morales Morales, C. Motzko, F. Nerling, O. Noll, S. Pflüger, A. Pitka, D. Rodríguez Piñeiro, A. Sanchez Lorente, M. Steinen, R. Valente, T. Weber, M. Zambrana, I. Zimmermann, A. Fedorov, M. Korjik, O. Missevitch, A. Boukharov, O. Malyshev, I. Marishev, P. Balanutsa, V. Balanutsa, V. Chernetsky, A. Demekhin, A. Dolgolenko, P. Fedorets, A. Gerasimov, V. Goryachev, V. Chandratre, V. Datar, D. Dutta, V. Jha, H. Kumawat, A.K. Mohanty, A. Parmar, B. Roy, G. Sonika, C. Fritzsch, S. Grieser, A.K. Hergemöller, B. Hetz, N. Hüsken, A. Khoukaz, J.P. Wessels, K. Khosonthongkee, C. Kobdaj, A. Limphirat, P. Srisawad, Y. Yan, M. Barnyakov, A.Yu. Barnyakov, K. Beloborodov, A.E. Blinov, V.E. Blinov, V.S. Bobrovnikov, S. Kononov, E.A. Kravchenko, I.A. Kuyanov, K. Martin, A.P. Onuchin, S. Serednyakov, A. Sokolov, Y. Tikhonov, E. Atomssa, R. Kunne, D. Marchand, B. Ramstein, J. Van de Wiele, Y. Wang, G. Boca, S. Costanza, P. Genova, P. Montagna, A. Rotondi, V. Abramov, N. Belikov, S. Bukreeva, A. Davidenko, A. Derevschikov, Y. Goncharenko, V. Grishin, V. Kachanov, V. Kormilitsin, A. Levin, Y. Melnik, N. Minaev, V. Mochalov, D. Morozov, L. Nogach, S. Poslavskiy, A. Ryazantsev, S. Ryzhikov, P. Semenov, I. Shein, A. Uzunian, A. Vasiliev, A. Yakutin, E. Tomasi-Gustafsson, U. Roy, B. Yabsley, S. Belostotski, G. Gavrilov, A. Izotov, S. Manaenkov, O. Miklukho, D. Veretennikov, A. Zhdanov, K. Makonyi, M. Preston, P. Tegner, D. Wölbing, T. Bäck, B. Cederwall, A.K. Rai, S. Godre, D. Calvo, S. Coli, P. De Remigis, A. Filippi, G. Giraudo, S. Lusso, G. Mazza, M. Mignone, A. Rivetti, R. Wheadon, F. Balestra, F. Iazzi, R. Introzzi, A. Lavagno, J. Olave, A. Amoroso, M.P. Bussa, L. Busso, F. De Mori, M. Destefanis, L. Fava, L. Ferrero, M. Greco, J. Hu, L. Lavezzi, M. Maggiora, G. Maniscalco, S. Marcello, S. Sosio, S. Spataro, R. Birsa, F. Bradamante, A. Bressan, A. Martin, H. Calen, W. Ikegami Andersson, T. Johansson, A. Kupsc, P. Marciniewski, M. Papenbrock, J. Pettersson, K. Schönning, M. Wolke, B. Galnander, J. Diaz, V. Pothodi Chackara, A. Chlopik, G. Kesik, D. Melnychuk, B. Slowinski, A. Trzcinski, M. Wojciechowski, S. Wronka, B. Zwieglinski, P. Bühler, J. Marton, D. Steinschaden, K. Suzuki, E. Widmann, J. Zmeskal, Jürgen Gerl, Ivan Kojouharov, Jasmina Kojouharova, and Research unit Nuclear & Hadron Physics

Subjects
Particle physics, Nuclear and High Energy Physics, COLLISIONS, Strong interaction, Nuclear Theory, hyperatoms, Antiprotons, Hyperatoms, Hypernuclei, Strangeness, EXCHANGE CURRENTS, 01 natural sciences, Partícules (Física nuclear), NO, Nuclear physics, Subatomär fysik, Hypemuclei, strangeness, DECUPLET BARYONS, ELECTRIC QUADRUPOLE-MOMENTS, 0103 physical sciences, Subatomic Physics, 010306 general physics, Nuclear Experiment, Physics, hypernuclei, NUCLEI, 010308 nuclear & particles physics, Hyperon, Transport theory, DOUBLE-LAMBDA-HYPERNUCLEI, MODEL, OMEGA, Antiproton, Physics::Accelerator Physics, Heavy ion, High Energy Physics::Experiment, antiprotons, INTERMEDIATE ENERGIES, EMULSION
Abstract

Bound nuclear systems with two units of strangeness are still poorly known despite their importance for many strong interaction phenomena. Stored antiprotons beams in the GeV range represent an unparalleled factory for various hyperon-antihyperon pairs. Their outstanding large production probability in antiproton collisions will open the floodgates for a series of new studies of systems which contain two or even more units of strangeness at the PANDA experiment at FAIR. For the first time, high resolution gamma-spectroscopy of doubly strange Lambda Lambda-hypernuclei will be performed, thus complementing measurements of ground state decays of Lambda Lambda-hypernuclei at J-PARC or possible decays of particle unstable hypernuclei in heavy ion reactions. High resolution spectroscopy of multistrange Xi(-) -atoms will be feasible and even the production of Omega(-) -atoms will be within reach. The latter might open the door to the vertical bar S vertical bar = 3 world in strangeness nuclear physics, by the study of the hadronic Omega(-) -nucleus interaction. For the first time it will be possible to study the behavior of Xi(+) in nuclear systems under well controlled conditions. (C) 2016 Elsevier B.V. All rights reserved.

Published
2016

13. The PANDA Barrel DIRC

Author

M. Böhm, W. Eyrich, A. Ali, Michael Düren, K. Peters, A. Lehmann, C. Sfienti, E. Etzelmüller, W. Lauth, K. Götzen, M. Hoek, A. Gerhardt, A. Belias, P. Achenbach, M. Cardinali, G. Schepers, K. Föhl, T. Wasem, Michaela Thiel, D. Lehmann, M. Patsyuk, K. Kreutzfeld, J. Rieke, F. Nerling, M. Pfaffinger, O. Merle, F. Uhlig, M. Krebs, L. Schmitt, A. Hayrapetyan, S. Schlimme, C. Schwarz, R. Dzhygadlo, G. Kalicy, M. Schmidt, M. Traxler, and J. Schwiening

Subjects
Physics, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Physics::Instrumentation and Detectors, Barrel (horology), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Optics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, business, Nuclear Experiment, Instrumentation, Mathematical Physics
Abstract

The PANDA experiment at the international accelerator Facility for Antiproton and Ion Research in Europe (FAIR) near GSI, Darmstadt, Germany will address fundamental questions of hadron physics. Excellent Particle Identification (PID) over a large range of solid angles and particle momenta will be essential to meet the objectives of the rich physics program. Charged PID for the barrel region of the PANDA target spectrometer will be provided by a DIRC (Detection of Internally Reflected Cherenkov light) detector. The Barrel DIRC will cover the polar angle range of 22$^\circ$-140$^\circ$ and cleanly separate charged pions from kaons for momenta between 0.5 GeV/c and 3.5 GeV/c with a separation power of at least 3 standard deviations. The design is based on the successful BABAR DIRC and the SuperB FDIRC R&D with several important improvements to optimize the performance for PANDA, such as a focusing lens system, fast timing, a compact fused silica prism as expansion region, and lifetime-enhanced Microchannel-Plate PMTs for photon detection. This article describes the technical design of the PANDA Barrel DIRC and the result of the design validation using a "vertical slice" prototype in hadronic particle beams at the CERN PS., arXiv admin note: text overlap with arXiv:1710.00684, arXiv:1707.09269

Published
2018

14. Endcap Disc DIRC for PANDA at FAIR

Author

M. Schmidt, M. Düren, E. Etzelmüller, K. Föhl, A. Hayrapetyan, K. Kreutzfeldt, O. Merle, J. Rieke, T. Wasem, M. Böhm, W. Eyrich, A. Lehmann, M. Pfaffinger, F. Uhlig, A. Ali, A. Belias, R. Dzhygadlo, A. Gerhardt, K. Götzen, G. Kalicy, M. Krebs, D. Lehmann, F. Nerling, M. Patsyuk, K. Peters, G. Schepers, L. Schmitt, C. Schwarz, J. Schwiening, M. Traxler, P. Achenbach, M. Cardinali, M. Hoek, W. Lauth, S. Schlimme, C. Sfienti, and M. Thiel

Subjects
Physics, Spectrometer, Physics::Instrumentation and Detectors, business.industry, Cherenkov detector, Detector, Particle identification, law.invention, Optics, law, High Energy Physics::Experiment, Nuclear Experiment, business, Cherenkov radiation
Abstract

The Endcap Disc DIRC (EDD) has been developed to provide an excellent particle identification in the future PANDA experiment by separating pions and kaons up to a momentum of 4 GeV/c with a separation power of 3 s.d.. The detector is placed in the forward endcap of the PANDA target spectrometer. It consists of a fused silica plate and focusing elements placed at the outer rim, which focus the Cherenkov light on the photo cathodes of the attached MCP-PMTs. A compact and fast readout of the signals is realized with special ASICs. The performance has been studied and validated with different prototype setups in various testbeam facilities.

Published
2018

15. The Barrel DIRC Detector for the PANDA Experiment at FAIR

Author

R. Dzhygadlo, A. Ali, A. Belias, A. Gerhardt, K. Götzen, G. Kalicy, M. Krebs, D. Lehmann, F. Nerling, M. Patsyuk, K. Peters, G. Schepers, L. Schmitt, C. Schwarz, J. Schwiening, M. Traxler, M. Zühlsdorf, M. Böhm, A. Britting, W. Eyrich, A. Lehman, M. Pfaffinger, F. Uhlig, M. Düren, E. Etzelmüller, K. Föhl, A. Hayrapetyan, K. Kreutzfeld, B. Kröck, O. Merle, J. Rieke, M. Schmidt, T. Wasem, P. Achenbach, M. Cardinali, M. Hoek, W. Lauth, S. Schlimme, C. Sfienti, and M. Thiel

Published
2018

16. Barrel Time-of-Flight (TOF) Detector for the $$\bar{\text {P}}$$ ANDA Experiment at FAIR

Author

L. Schmitt, Ken Suzuki, M. Chirita, C. Schwarz, D. Steinschaden, K.-T. Brinkmann, N. Kratochwil, H. Orth, K. Götzen, S. Zimmermann, K. Dutta, L. Gruber, A. Lehmann, M. Böhm, and K. Kalita

Subjects
Physics, Nuclear physics, Momentum, Time of flight, Antiproton, High Energy Physics::Phenomenology, Hadron, High Energy Physics::Experiment, Nuclear Experiment, Nuclear matter, Spectroscopy, Particle identification, Semiconductor detector
Abstract

The \(\bar{\text{ P }}\)ANDA experiment at FAIR in Darmstadt will perform a fixed target experiment by using a cooled beam of antiprotons in the momentum range between 1.5 to 15 GeV/c to study open questions in hadron physics. The core program comprises charmonium spectroscopy with precision measurement of mass, width and decay branches, investigation of possible exotic states, search for modifications of charmed hadrons in nuclear matter and \(\gamma \)-ray spectroscopy of hypernuclei.

Published
2018

17. The PANDA Endcap Disc DIRC

Author

A. Hayrapetyan, Patrick Achenbach, A. Belias, G. Schepers, Michael Düren, M. Pfaffinger, M. Böhm, A. Gerhardt, F. Uhlig, M. Krebs, M. Cardinali, O. Merle, Concettina Sfienti, M. Schmidt, L. Schmitt, K. Föhl, M. Hoek, W. Eyrich, K. Kreutzfeld, M. Patsyuk, M. Traxler, R. Dzhygadlo, J. Rieke, G. Kalicy, F. Nerling, K. Götzen, E. Etzelmüller, W. Lauth, A. Ali, A. Lehmann, S. Schlimme, C. Schwarz, Michaela Thiel, T. Wasem, J. Schwiening, D. Lehmann, and Klaus Peters

Subjects
particle identification [K], Physics::Instrumentation and Detectors, 01 natural sciences, DIRC, K: particle identification, Optics, Pion, Detection of internally reflected Cherenkov light, 0103 physical sciences, particle identification [pi], ddc:610, 010306 general physics, Nuclear Experiment, Instrumentation, Mathematical Physics, Cherenkov radiation, Physics, Cherenkov counter: design, Range (particle radiation), 010308 nuclear & particles physics, business.industry, PANDA, Detector, Solid angle, DESY, Light guide, Test beam, design [Cherenkov counter], Radiator (engine cooling), Facility for Antiproton and Ion Research, High Energy Physics::Experiment, Photonics, business, pi: particle identification, performance
Abstract

Journal of Instrumentation 13(02), C02002 - C02002 (2018). doi:10.1088/1748-0221/13/02/C02002, Positively identifying charged kaons in the PANDA forward endcap solid angle range can be achieved with the Endcap Disc DIRC, allowing kaon-pion separation from 1 up to 4 GeV/c with a separation power of at least 3 standard deviations. Design, performance, and components of this DIRC are given, including the recently introduced TOFPET-ASIC based read-out. Results of a prototype operated in a test beam at DESY in 2016 are shown., Published by Inst. of Physics, London

Published
2018
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18. The Endcap Disc DIRC detector of PANDA

Author

K. Götzen, A. Lehmann, M. Pfaffinger, J. Rieke, Michaela Thiel, T. Wasem, J. Schwiening, D. Lehmann, R. Dzhygadlo, S. Stelter, Concettina Sfienti, M. Traxler, M. Cardinali, M. Schmidt, A. Hayrapetyan, L. Schmitt, M. Patsyuk, M. Hoek, W. Eyrich, S. Schlimme, C. Schwarz, F. Uhlig, K. Kreutzfeld, F. Nerling, Abbas J. Ali, M. Krebs, M. Böhm, A. Gerhardt, Michael Düren, A. Belias, K. Föhl, K. Peters, Patrick Achenbach, E. Etzelmüller, W. Lauth, and G. Schepers

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Spectrometer, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Jet (particle physics), 01 natural sciences, 030218 nuclear medicine & medical imaging, Charm quark, Nuclear physics, Momentum, 03 medical and health sciences, 0302 clinical medicine, Detection of internally reflected Cherenkov light, Antiproton, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Instrumentation
Abstract

At the international FAIR laboratory, an upcoming significant enlargement of the GSI installations near Darmstadt, Germany, the PANDA antiproton experiment will investigate fundamental questions of hadron physics in the charm quark energy range. Antiprotons in the 1.5 to15 GeV/c momentum range will interact with gas jet or pellet fixed targets. The Endcap Disc DIRC (Detection of Internally Reflected Cherenkov light) covers the forward endcap solid angle of the PANDA target spectrometer to positively identify charged kaons. Monte-Carlo simulations indicate that from 1 up to 4 GeV/c one can achieve kaon–pion separation with a separation power of at least 3 standard deviations. For the upcoming CERN test beam in August 2018 the read-out electronics has been upgraded to the TOFPET-ASIC Version 2.

Published
2019

19. Breakthrough in the lifetime of microchannel plate photomultipliers

Author

M. Zühlsdorf, M. Krebs, A. Hayrapetyan, W. Eyrich, G. Kalicy, M. Traxler, Concettina Sfienti, Patrick Achenbach, K. Götzen, Euan N. Cowie, R. A. Montgomery, K. Föhl, G. Schepers, Paul Alois Buhler, L. Gruber, M. Cardinali, M. Patsyuk, Harphool Kumawat, A. Lehmann, K. Peters, Michael Düren, S. Schlimme, L. Schmitt, C. Schwarz, V.Kh. Dodokhov, R. Dzhygadlo, A. Britting, E. Etzelmüller, W. Lauth, F. Uhlig, J. Rieke, Michaela Thiel, J. Schwiening, D. Lehmann, B. Kröck, Ken Suzuki, O. Merle, M. Hoek, A. Gerhardt, T. Keri, and Johann Marton

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, business.industry, Detector, Photocathode, Atomic layer deposition, Optics, Detection of internally reflected Cherenkov light, Quantum efficiency, Microchannel plate detector, business, Instrumentation, Cherenkov radiation
Abstract

Cherenkov detectors using the DIRC (Detection of Internally Reflected Cherenkov Light) principle are foreseen for particle identification in the P ¯ ANDA experiment at FAIR. Promising sensors for the detection of the Cherenkov light are the so-called micro-channel plate (MCP) photomultipliers (PMT). They have an excellent time resolution, can be operated at high gain for single photon detection and have a high resistivity against magnetic fields. The disadvantage of these devices was their limited lifetime, due to damage by feedback ions on the photocathode. The lifetime of various types of MCP-PMTs from different manufactures has been tested under conditions similar to that in the P ¯ ANDA experiment. The sensors are assembled in one setup, to ensure the same illumination conditions. The measurement procedure requires permanent monitoring of the illumination and interruptions after about 2–3 weeks to measure dark count rate, gain and spectral quantum efficiency of all sensors. Furthermore surface scans of the whole photocathode are done every 2–4 months to determine faster aging areas. The latest results show very good lifetime performance for MCP-PMTs, where the MCPs have been treated with the atomic layer deposition (ALD) technique.

Published
2015

20. The PANDA Barrel DIRC detector

Author

Patrick Achenbach, Concettina Sfienti, M. Zühlsdorf, K. Götzen, R. Hohler, A. Hayrapetyan, M. Hoek, L. Schmitt, Harphool Kumawat, F. Uhlig, B. Lewandowski, Werner Lauth, Klaus Peters, M. Cardinali, Michaela Thiel, J. Schwiening, K. Föhl, D. Lehmann, Johann Marton, A. Britting, Euan N. Cowie, M. Traxler, V.Kh. Dodokhov, C. Schwarz, Michael Düren, W. Eyrich, A. Lehmann, Paul Alois Buhler, Ken Suzuki, O. Merle, M. Patsyuk, R. A. Montgomery, G. Kalicy, G. Rosner, L. Gruber, B. Kröck, T. Keri, R. Dzhygadlo, A. Gerhardt, J. Rieke, and G. Schepers

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Photon, Large Hadron Collider, Physics::Instrumentation and Detectors, Hadron, Detector, Particle identification, Nuclear physics, Conceptual design, Antiproton, Physics::Accelerator Physics, Facility for Antiproton and Ion Research, High Energy Physics::Experiment, Nuclear Experiment, Instrumentation
Abstract

The PANDA experiment at the new Facility for Antiproton and Ion Research in Europe (FAIR) at GSI, Darmstadt, will study fundamental questions of hadron physics and QCD using high-intensity cooled antiproton beams with momenta between 1.5 and 15 GeV/c. Efficient Particle Identification for a wide momentum range and the full solid angle is required for reconstructing the various physics channels of the PANDA program. Hadronic Particle Identification in the barrel region of the detector will be provided by a DIRC counter. The design is based on the successful BABAR DIRC with important improvements, such as focusing optics and fast photon timing. Several of these improvements, including different radiator geometries and optics, were tested in particle beams at GSI and at CERN. The evolution of the conceptual design of the PANDA Barrel DIRC and the performance of complex prototypes in test beam campaigns will be discussed.

Published
2014

21. Frontend electronics for high-precision single photo-electron timing using FPGA-TDCs

Author

F. Uhlig, A. Gerhardt, M. Zühlsdorf, Concettina Sfienti, G. Kalicy, Michaela Thiel, T. Keri, R. Hohler, M. Patsyuk, J. Schwiening, D. Lehmann, Johann Marton, A. Lehmann, R. Dzyhgadlo, B. Kröck, L. Schmitt, B. Lewandowski, M. Hoek, J. Rieke, V.Kh. Dodokhov, A. Hayrapetyan, C. Schwarz, C. Ugur, K. Föhl, M. Cardinali, O. Corell, A. Britting, Euan N. Cowie, M. Traxler, Paul Alois Buhler, L. Gruber, Ken Suzuki, O. Merle, Harphool Kumawat, R. A. Montgomery, W. Eyrich, G. Rosner, Michael Düren, M. I. Ferretti Bondy, K. Götzen, C. Rosner, K. Peters, Patrick Achenbach, G. Schepers, and W. Lauth

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, business.industry, Detector, Integrated circuit, Image plane, law.invention, Time-to-digital converter, Application-specific integrated circuit, law, Electronics, Field-programmable gate array, business, Instrumentation, Computer hardware
Abstract

The next generation of high-luminosity experiments requires excellent particle identification detectors which calls for Imaging Cherenkov counters with fast electronics to cope with the expected hit rates. A Barrel DIRC will be used in the central region of the Target Spectrometer of the planned PANDA experiment at FAIR. A single photo-electron timing resolution of better than 100 ps is required by the Barrel DIRC to disentangle the complicated patterns created on the image plane. R&D studies have been performed to provide a design based on the TRB3 readout using FPGA-TDCs with a precision better than 20 ps RMS and custom frontend electronics with high-bandwidth pre-amplifiers and fast discriminators. The discriminators also provide time-over-threshold information thus enabling walk corrections to improve the timing resolution. Two types of frontend electronics cards optimised for reading out 64-channel PHOTONIS Planacon MCP-PMTs were tested: one based on the NINO ASIC and the other, called PADIWA, on FPGA discriminators. Promising results were obtained in a full characterisation using a fast laser setup and in a test experiment at MAMI, Mainz, with a small scale DIRC prototype.

Published
2014

22. Prototyping the PANDA Barrel DIRC

Author

T. Keri, C. Schwarz, A. Hayrapetyan, R. A. Montgomery, R. Dzhygadlo, Patrick Achenbach, W. Eyrich, Michael Düren, F. Uhlig, M. Hoek, Euan N. Cowie, J. Rieke, Johann Marton, K. Peters, Harphool Kumawat, Paul Alois Buhler, W. Lauth, G. Rosner, B. Kröck, Concettina Sfienti, M. Traxler, K. Götzen, K. Föhl, M. Cardinali, M. Patsyuk, Michaela Thiel, G. Kalicy, A. Gerhardt, R. Hohler, L. Schmitt, J. Schwiening, D. Lehmann, L. Gruber, B. Lewandowski, A. Britting, A. Lehmann, Ken Suzuki, O. Merle, G. Schepers, V.Kh. Dodokhov, and M. Zühlsdorf

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Large Hadron Collider, Physics::Instrumentation and Detectors, business.industry, Detector, Reconstruction algorithm, Particle identification, law.invention, Lens (optics), Optics, law, High Energy Physics::Experiment, Prism, business, Instrumentation, Cherenkov radiation
Abstract

The design of the Barrel DIRC detector for the future PANDA experiment at FAIR contains several important improvements compared to the successful BABAR DIRC, such as focusing and fast timing. To test those improvements as well as other design options a prototype was build and successfully tested in 2012 with particle beams at CERN. The prototype comprises a radiator bar, focusing lens, mirror, and a prism shaped expansion volume made of synthetic fused silica. An array of micro-channel plate photomultiplier tubes measures the location and arrival time of the Cherenkov photons with sub-nanosecond resolution. The development of a fast reconstruction algorithm allowed to tune construction details of the detector setup with test beam data and Monte-Carlo simulations.

Published
2014

23. Development of an Endcap DIRC for PANDA

Author

D. Mühlheim, L. Schmitt, M. Zühlsdorf, Werner Lauth, Michaela Thiel, Patrick Achenbach, A. Hayrapetyan, J. Schwiening, D. Lehmann, G. Schepers, A. Lehmann, K. Götzen, E. Etzelmüller, V.Kh. Dodokhov, Johann Marton, G. Kalicy, M. Hoek, R. Hohler, Michael Düren, K. Peters, Concettina Sfienti, C. Schwarz, W. Eyrich, F. Uhlig, Euan N. Cowie, M. Cardinali, J. Rieke, G. Rosner, K. Föhl, R. A. Montgomery, Paul Alois Buhler, M. Traxler, L. Gruber, Ken Suzuki, O. Merle, B. Lewandowski, Harphool Kumawat, A. Britting, M. Patsyuk, T. Keri, R. Dzhygadlo, A. Gerhardt, and B. Kröck

Subjects
Physics, High rate, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Barrel (horology), Reconstruction method, Particle identification, Optics, Planar, High Energy Physics::Experiment, Development (differential geometry), business, Instrumentation, Cherenkov radiation
Abstract

The aim of this research is to develop a planar DIRC detector showing advantages and performance similar to a classical, barrel shaped DIRC, but at smaller polar angles which cannot be accessed using a cylindrical geometry. The device will complement the PANDA Barrel DIRC by covering polar angles from 5° to 22°. The envisaged π /K-separation is ≥ 3 σ up to 4 GeV/c. A major challenge is the adaption of the device to the PANDA environment including a magnetic field of ~1–2 T, high rates and radiation, limited space for optics and sensors as well as the lack of a common first-level trigger. This paper discusses a detector design which forms a compromise between these constraints and available hardware, a specific analytic reconstruction method, a performance estimation based on Geant4 simulations and finally the successful particle identification using a recent R&D prototype.

Published
2014

24. Improved lifetime of microchannel-plate PMTs

Author

W. Lauth, A. Gerhardt, Euan N. Cowie, W. Eyrich, K. Götzen, M. Patsyuk, T. Keri, R. Dzhygadlo, Harphool Kumawat, K. Föhl, M. Zühlsdorf, A. Hayrapetyan, B. Kröck, A. Lehmann, Paul Alois Buhler, K. Peters, G. Rosner, R. A. Montgomery, Ken Suzuki, C. Schwarz, O. Merle, L. Schmitt, R. Hohler, Johann Marton, M. Hoek, G. Kalicy, J. Rieke, Michael Düren, Michaela Thiel, V.Kh. Dodokhov, Concettina Sfienti, L. Gruber, J. Schwiening, D. Lehmann, M. Cardinali, Patrick Achenbach, B. Lewandowski, A. Britting, F. Uhlig, G. Schepers, and M. Traxler

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Photon, business.industry, Detector, Nanotechnology, engineering.material, Cathode, Anode, law.invention, Coating, law, engineering, Optoelectronics, Quantum efficiency, Microchannel plate detector, business, Instrumentation
Abstract

The charged particle identification at the PANDA experiment will be mainly performed with DIRC detectors. Because of their advantageous properties the preferred photon sensors are MCP-PMTs. However, until recently these devices showed serious aging problems which resulted in a diminishing quantum efficiency (QE) of the photo cathode. By applying innovative countermeasures against the aging causes, the manufacturers recently succeeded in drastically improving the lifetime of MCP-PMTs. Especially the application of an ALD coating technique to seal the material of the micro-channels proves very powerful and results in a lifetime of ≈ 6 C / cm 2 integrated anode charge without a substantial QE degradation for the latest PHOTONIS XP85112. This paper will present a comparative measurement of the lifetime of several older and recent MCP-PMTs demonstrating this progress.

Published
2014

25. Feasibility study for the measurement of πN transition distribution amplitudes at P¯ANDA in p¯p→J/ψπ0

Author

Tristan Weber, Michaela Thiel, T. Wasem, J. Schwiening, M. Kube, R. Schmitz, D. Lehmann, A. Trzcinski, A. Amoroso, A.A. Efremov, Alexander Olshevskiy, R. Klasen, Herbert Koch, M. Maggiora, A. Dbeyssi, Dipanwita Dutta, F. E. Maas, A. Chlopik, E. Etzelmüller, P. Wintz, V. Lucherini, P. Schakel, P. De Remigis, Krzysztof Swientek, G.S. Shabratova, H. Deppe, Angelo Rivetti, Riccardo Introzzi, K. Dutta, P. Wieczorek, V. M. Datar, W. Lauth, E. A. Strokovsky, L. Busso, M. Hoek, F. Balestra, G. Maniscalco, D. Khaneft, R. Schnell, S. Vejdani, N. G. Minaev, V. Chernetsky, B. Seitz, U. Thoma, K. K. Seth, Mario Bragadireanu, Amiran Tomaradze, B. Fröhlich, S. Pflüger, Valentino Rigato, Franco Bradamante, I. A. Kuyanov, E. Gutz, V. M. Abazov, D. P. Watts, Lennart Isaksson, M. Albrecht, V. Arefiev, T. Schröder, B. Singh, G. Sonika, A. Fechtchenko, C. Rosenbaum, L. Schmitt, Bernd Voss, B. Hetz, S. Sanchez, Magnus Wolke, S.A. Zaporozhets, A. Filippi, S. Coli, Bhavin Patel, A. Khoukaz, Markus Ball, A. Pitka, Krisztian Peters, B. Ramstein, K. Khosonthongkee, M. Pfaffinger, Torbjörn Bäck, D. Veretennikov, J. Pütz, R.A. Salmin, P. Balanutsa, B. J. Liu, A. Hayrapetyan, Chinorat Kobdaj, R. W. Novotny, P. Genova, W. Kühn, P. F. Dalpiaz, S. Belostotski, Ulrich Wiedner, A.S. Vodopianov, Yu.N. Rogov, Wojciech Krzemien, M. Wojciechowski, T. Erlen, Giuseppe Giraudo, B. Zwieglinski, H. Smit, E. Prencipe, J. Jaworowski, R.A. Kunne, S. Lusso, A.G. Fedunov, P. Musiol, C. Schnier, Yan Liang, H. Ohm, Paolo Montagna, A. Karavdina, G. Mazza, N. K. Walford, G. Boca, Boris Batyunya, M. Zyzak, V. Varentsov, M. Kuhlmann, M. Zühlsdorf, V. V. Tokmenin, G. Sterzenbach, M. Tiemens, Stanisław Kistryn, A. Kumar, Alessandro Bressan, F. Lisowski, Paul Alois Buhler, V. Carassiti, D. Prasuhn, M. Zambrana, R. Dzhygadlo, J. Lühning, M.K. Suleimanov, O. Noll, P. Salabura, M. Patsyuk, Christian Schmidt, Johann Zmeskal, M. Barnyakov, A. A. Piskun, F. Feldbauer, Susanna Costanza, Zbigniew Rudy, V. E. Blinov, F. De Mori, Alexander D. Vasiliev, V. Metag, C. Sfienti, Utpal Roy, E. Perevalova, M. Cardinali, R. Birsa, R. Teshev, Aleksandra Wrońska, Egle Tomasi-Gustafsson, F. Uhlig, K. Pysz, T. Sefzick, M. Steinen, V.B. Chandratre, M. Krebs, Matthias Richter, J. P. Wessels, W. Schäfer, M. Fritsch, M. Korjik, J. Rieke, Andreas Lehrach, M. Kavatsyuk, A. Kulkarni, R. F. Parodi, R. Karabowicz, A. Sanchez-Lorente, T.A. Pocheptsov, Valery Dormenev, A. Magiera, H. Flemming, Vassili Kachanov, K. Kalita, W. Erni, P. Poznański, T. Holtmann, O. Miklukho, J. Pychy, S. Bleser, Yu. Yu. Lobanov, Zhiqing Liu, T. Quagli, D. Branford, O. Corell, Konstantin Beloborodov, Dirk Grunwald, Jize Zhao, R. Böhm, L. Capozza, L. Ferrero, A. K. Hergemöller, T. Held, Mario Greco, A. Wilms, Alessandro Drago, I. Augustin, Mathias Fink, A. E. Yakutin, N. Belikov, D. I. Glazier, Sergey Nazarenko, D. Kang, A. Boukharov, M. Kesselkaul, V. Abramov, A. N. Skachkova, S. Bukreeva, U. Thöring, Hans-Georg Zaunick, A. Ryazantsev, S. Marcello, C. Guaraldo, V. Pothodi Chackara, K. Makonyi, A.I. Zinchenko, S. Ryzhikov, S. Orfanitski, Edward Lisowski, K. A. Martin, Ajit Kumar Mohanty, L. Lavezzi, Kirill M. Semenov-Tian-Shansky, S.A. Kononov, L. Gruber, Grzegorz Filo, M. Domagala, L. Cao, V. Di Pietro, S. Grieser, B. Ketzer, S. Schlimme, Marten Ole Schmidt, Alberto Rotondi, M. Michel, C. Schwarz, S. I. Manaenkov, E. A. Kravchenko, R. Beck, A. Gillitzer, Krzysztof Korcyl, B. Slowinski, G. Kesik, Felice Iazzi, U. Müller, D. Calvo, B. Krusche, C. Wang, M. Steinke, A. Gerhardt, V. L. Malyshev, I. Marishev, E. Widmann, Gianangelo Bracco, Harald Kleines, N. I. Zhuravlev, A. Lehmann, D. Nicmorus Marinescu, Patrick Achenbach, A. Apostolou, D. Walther, Johann Marton, C. Sowa, T. Saito, R. Dosdall, Ayut Limphirat, A. Belias, Dan Pantea, A. Täschner, A. Mustafa, D. Marchand, P. Kulessa, M. Galuska, C. Ugur, W. Ikegami Andersson, M. Savrie, C. Hammann, J. C. van der Weele, D. Wölbing, G.B. Pontecorvo, Vivekanand Jha, Hasko Stenzel, D. Przyborowski, P. Drexler, Antoni Szczurek, Tord Johansson, A. Gerasimov, T. Triffterer, A. Britting, S. Ahmed, Mihai Caprini, W. Eyrich, A. Kozela, V. Grishin, O. Malyshev, U. Kurilla, Yupeng Yan, H. Sohlbach, S. Leiber, P. Strzempek, X. Y. Shen, V. V. Mochalov, M. I. Martínez, U. Lynen, I. Lehmann, M. Bai, A. A. Zhdanov, M. Preston, M. Urban, M. Mikirtychyants, I. K. Keshk, Andrea Lavagno, Grzegorz Korcyl, H. Ahmadi, J. Biernat, A. Lai, M. Traxler, Richard Wheadon, M. Pelizäus, A. Cotta Ramusino, D. Rodríguez Piñeiro, Markus Büscher, R. Kliemt, M. M. Macri, V. Kormilitsin, A. Yu. Barnyakov, Z. Li, Ivan Kisel, Arpit Parmar, Tomasz Fiutowski, C. Schmidt, C. Morales Morales, J. Płażek, Michael Düren, Z. J. Sun, H. Loehner, M. Pugach, P. Fedorets, K. Suzuki, A. P. Onuchin, E. Fioravanti, Andrea Bianconi, B. Ma, Yu.M. Mel'nik, M. Deiseroth, F. H. Heinsius, D. G. Ireland, J. S. Lange, Anne-Laure Martin, B. Wohlfahrt, H. Xu, J. Van de Wiele, P. N. Deepak, D. A. Morozov, N. Hüsken, Livio Bianchi, Günter Kemmerling, S. Löchner, B. Galnander, Jifeng Hu, N. B. Skachkov, G. D. Alexeev, T. Ullrich, I. Zimmermann, B. J. Roy, E.K. Koshurnikov, D. Steinschaden, M. Michałek, Bruce Yabsley, M. N. Wagner, S. Wronka, Smbat Grigoryan, Paola Gianotti, Andrey V. Izotov, T. Kuske, S. C. Li, A. G. Zorin, A. Davidenko, M. Lindemulder, V. Astakhov, Andreas Herten, V.I. Lobanov, V.Kh. Dodokhov, Oleg V. Missevitch, Y. Wang, C. Hahn, A. Pyszniak, M.G. Sapozhnikov, L. V. Malinina, Andrey Uzunian, Andrei Fedorov, H. Orth, A. Ehret, Alastair J. Wilson, L. V. Nogach, R. Nellen, Hans Calén, I. Garzia, A.F. Makarov, Harphool Kumawat, S. I. Serednyakov, A. Galoyan, Paweł Moskal, Karin Schönning, W. Czyzycki, J. G. Messchendorp, A. Riccardi, M. Kümmel, A. Sokolov, Maria Krawczyk, Ting Xiao, S. Godre, A. G. Denig, Marek Idzik, M. O. Distler, Frank Goldenbaum, P. Srisawad, G. Kozlov, K. Biguenko, P.J.J. Lemmens, S. Spataro, M. Yu. Barabanov, S. Maldaner, A. Zambanini, Ajay Kumar Rai, I. Shein, M. Böhm, M. Rossbach, A. Demekhin, Yury Tikhonov, A. A. Derevschikov, C. Fritzsch, M. Babai, J. S. Díaz, V. K. Rodionov, A. E. Blinov, A. Cebulla, S. Reiter, A. Samartsev, Bartosz Mindur, V. N. Goryachev, H. B. Liu, B. Kopf, E. Atomssa, C. Wendel, Sean A Dobbs, J. Pochodzalla, Yu.I. Davydov, Genady Gavrilov, Andrew Levin, M.P. Bussa, G. Rosner, S. Jasper, Ankhi Roy, J. Olave, A. Bersani, Bo Cederwall, K. Götzen, B. Kamys, P. Wüstner, Piotr Lebiedowicz, D. Bettoni, A. Dolgolenko, P.-E. Tegnér, Mariana Nanova, D. Melnychuk, V. Akishina, P. A. Semenov, V. Balanutsa, P. Mahlberg, H. Leithoff, Victor Bobrovnikov, M. Papenbrock, L. Fava, R. Valente, R. Veenstra, C. Motzko, K.-T. Brinkmann, F. Nerling, V. Uzhinsky, Harald Merkel, M. Destefanis, D. Lin, Y.M. Goncharenko, M. C. Mora Espí, N. Divani Veis, Pawel Marciniewski, Mohammed Al-Turany, Q. Hu, Andrzej Kupsc, M. Steinacher, Tobias Stockmanns, J. Ritman, S. Diehl, V. Serdyuk, Jerzy Smyrski, A. Gromliuk, M. Mignone, M. Moritz, S. Sosio, S. Schadmand, G. Schepers, S. Poslavskiy, and Joachim Pettersson

Subjects
Quantum chromodynamics, Physics, Particle physics, Luminosity (scattering theory), Annihilation, Meson, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, Particle identification, Nuclear physics, Factorization, Antiproton, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit)
Abstract

The exclusive charmonium production process in (P) over barp annihilation with an associated pi 0 meson (p) over barp -> J/psi pi(0) is studied in the framework of QCD collinear factorization. The feasibility of measuring this reaction through the J/psi -> e(+) e(-) decay channel with the AntiProton ANnihilation at DArmstadt ((P) over bar ANDA) experiment is investigated. Simulations on signal reconstruction efficiency as well as the background rejection from various sources including the (P) over barp -> pi(+)pi(-)pi(0) and (p) over barp -> J/psi pi(0)pi(0) reactions are performed with PANDAROOT, the simulation and analysis software framework of the (P) over bar ANDA experiment. It is shown that the measurement can be done at (P) over bar ANDA with significant constraining power under the assumption of an integrated luminosity attainable in four to five months of data taking at the maximum design luminosity.

Published
2017

26. The PANDA DIRC Detectors at FAIR

Author

C. E. Hyde, J. Rieke, A. Ali, Michaela Thiel, T. Wasem, A. Lehmann, J. Schwiening, D. Lehmann, A. Gerhardt, L. Schmitt, G. Schepers, Michael Düren, M. Traxler, M. Zühlsdorf, M. Böhm, A. Belias, G. Kalicy, K. Föhl, W. Eyrich, B. Kröck, K. Kreutzfeld, M. Hoek, E. Etzelmüller, W. Lauth, M. Krebs, M. Cardinali, M. Schmidt, M. Patsyuk, Concettina Sfienti, A. Britting, F. Nerling, S. Schlimme, C. Schwarz, O. Merle, Patrick Achenbach, L. Allison, F. Uhlig, M. Pfaffinger, R. Dzhygadlo, K. Götzen, Klaus Peters, and A. Hayrapetyan

Subjects
Photomultiplier, Photon, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, 01 natural sciences, Particle identification, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Optics, Detection of internally reflected Cherenkov light, 0103 physical sciences, Nuclear Experiment, Instrumentation, Mathematical Physics, Physics, Spectrometer, 010308 nuclear & particles physics, business.industry, Detector, Instrumentation and Detectors (physics.ins-det), Facility for Antiproton and Ion Research, Microchannel plate detector, High Energy Physics::Experiment, business
Abstract

The PANDA detector at the international accelerator Facility for Antiproton and Ion Research in Europe (FAIR) addresses fundamental questions of hadron physics. An excellent hadronic particle identification (PID) will be accomplished by two DIRC (Detection of Internally Reflected Cherenkov light) counters in the target spectrometer. The design for the barrel region covering polar angles between 22 deg. to 140 deg. is based on the successful BABAR DIRC with several key improvements, such as fast photon timing and a compact imaging region. The novel Endcap Disc DIRC will cover the smaller forward angles between 5 deg. (10 deg.) to 22 deg. in the vertical (horizontal) direction. Both DIRC counters will use lifetime-enhanced microchannel plate PMTs for photon detection in combination with fast readout electronics. Geant4 simulations and tests with several prototypes at various beam facilities have been used to evaluate the designs and validate the expected PID performance of both PANDA DIRC counters., Comment: 7 pages, 5 figures, INSTR17 conference proceedings

Published
2017
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27. The PANDA Barrel DIRC

Author

Michaela Thiel, Concettina Sfienti, J. Schwiening, D. Lehmann, S. Schlimme, C. Schwarz, Euan N. Cowie, A. Belias, M. Zühlsdorf, A. Gerhardt, L. Schmitt, T. Keri, K. Föhl, R. Dzhygadlo, M. Schmidt, Patrick Achenbach, G. Kalicy, J. Rieke, M. Krebs, M. Traxler, F. Uhlig, Klaus Peters, K. Götzen, B. Kröck, W. Eyrich, M. Hoek, M. Patsyuk, M. Cardinali, F. Nerling, A. Hayrapetyan, E. Etzelmüller, M. Pfaffinger, W. Lauth, Michael Düren, A. Britting, O. Merle, A. Lehmann, and G. Schepers

Subjects
Physics, Photon, Large Hadron Collider, 010308 nuclear & particles physics, Hadron, 01 natural sciences, 7. Clean energy, Particle identification, Nuclear physics, Detection of internally reflected Cherenkov light, Antiproton, 0103 physical sciences, Physics::Accelerator Physics, Facility for Antiproton and Ion Research, High Energy Physics::Experiment, ddc:610, Nuclear Experiment, 010306 general physics, Instrumentation, Mathematical Physics, Cherenkov radiation
Abstract

The PANDA detector at the international accelerator Facility for Antiproton and Ion Research in Europe (FAIR) addresses fundamental questions of hadron physics. Experiments concerning charmonium spectroscopy, the search for hybrids and glueballs and the interaction of hidden and open charm particles with nucleons and nuclei will be performed with antiproton beams impinging on hydrogen or nuclear targets. Cooled beams allow the precision scan of resonances in formation experiments. The momentum range of the antiproton beam between 1.5 GeV/c and 15 GeV/c tests predictions by perturbation theory and will reveal deviations originating from strong QCD . An excellent hadronic particle identification will be accomplished by DIRC (Detection of Internally Reflected Cherenkov light) counters. The design for the barrel region is based on the successful BaBar DIRC with several key improvements, such as fast photon timing and a compact imaging region. DIRC designs based on different radiator geometries with several focusing options were studied in simulation. The performance of each design was characterized in terms of photon yield and single photon Cherenkov angle resolution. Selected design options were implemented in prototypes and tested with hadronic particle beams at GSI and CERN.

Published
2016

28. Lifetime of MCP-PMTs and other performance features

Author

M. Cardinali, R. Dzhygadlo, M. Schmidt, D. Miehling, K. Götzen, M. Böhm, L. Schmitt, F. Uhlig, M. Traxler, M. Patsyuk, Concettina Sfienti, A. Ali, F. Nerling, K. Kreutzfeld, A. Lehmann, S. Stelter, M. Pfaffinger, M. Hoek, G. Kalicy, A. Hayrapetyan, A. Belias, J. Rieke, S. Schlimme, C. Schwarz, Michaela Thiel, T. Wasem, J. Schwiening, D. Lehmann, O. Merle, A. Gerhardt, M. Krebs, W. Eyrich, G. Schepers, Patrick Achenbach, Michael Düren, K. Föhl, K. Peters, E. Etzelmüller, and W. Lauth

Subjects
Physics, Photon, 010308 nuclear & particles physics, business.industry, Detector, Electron, 01 natural sciences, Anode, Atomic layer deposition, Data acquisition, Recoil, Optics, 0103 physical sciences, Quantum efficiency, 010306 general physics, business, Instrumentation, Mathematical Physics
Abstract

The ANDA experiment at FAIR will use DIRC detectors for the separation of hadrons. The compactness of the ANDA detector requires the image planes of these detectors to be placed inside the magnetic field of the solenoid. Due to this and other boundary conditions MCP-PMTs were identified as the only suitable photon sensors. Until recently the major obstacle for an application of MCP-PMTs in high rate experiments like ANDA were serious aging problems which led to damage at the photo-cathode and a fast declining quantum efficiency as the integrated anode charge (IAC) increased. With new countermeasures against the aging, in particular due to the application of an atomic layer deposition (ALD) technique to coat the MCP pores, the lifetime of MCP-PMTs has meanwhile increased by a factor >50 which is fully sufficient for ANDA. The recent results of our long-term lifetime measurements are discussed. New 2-inch MCP-PMT prototypes from Hamamatsu show an encouraging behavior. However, the currently best performing MCP-PMT is a 2-inch PHOTONIS tube with two ALD-layers which reaches an IAC of >16 C/cm2 without any visible sign of aging. In the second part of these proceedings a new data acquisition system of the PADIWA/TRB type is presented which allows a quasi-parallel measurement of many MCP-PMT performance parameters. Especially unwanted effects like dark-count rate, crosstalk, ion after-pulsing, and recoil electrons can be studied in more detail than ever before. Exemplary results for these parameters are shown. The discussed DAQ system will be used for the comprehensive data quality checks of the MCP-PMTs being built into the DIRCs.

Published
2018

29. Particle identification algorithms for the PANDA Endcap Disc DIRC

Author

Michaela Thiel, A. Hayrapetyan, T. Wasem, Michael Düren, J. Schwiening, D. Lehmann, E. Etzelmüller, W. Lauth, K. Kreutzfeld, A. Ali, R. Dzhygadlo, A. Lehmann, M. Böhm, S. Schlimme, C. Schwarz, W. Eyrich, F. Nerling, A. Belias, F. Uhlig, K. Föhl, G. Schepers, A. Gerhardt, Concettina Sfienti, M. Patsyuk, J. Rieke, M. Traxler, Patrick Achenbach, K. Peters, M. Krebs, G. Kalicy, K. Götzen, M. Cardinali, M. Schmidt, L. Schmitt, M. Pfaffinger, M. Hoek, and O. Merle

Subjects
010308 nuclear & particles physics, Computer science, 0103 physical sciences, 010306 general physics, 01 natural sciences, Instrumentation, Algorithm, Mathematical Physics, Particle identification
Published
2017

30. Search for Pentaquarks at BaBar

Author

K. Götzen

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Hadron, FOS: Physical sciences, BaBar experiment, State (functional analysis), Electron, Atomic and Molecular Physics, and Optics, Pentaquark, High Energy Physics - Experiment, Baryon, High Energy Physics - Experiment (hep-ex)
Abstract

The results of searches for the strange pentaquark states, Theta(1540)+, Xi(1860)-- and Xi(1860)0 in data recorded by the BABAR experiment are presented. We search for these three states inclusively in 123.4 fb^-1 of e+ e- annihilation data produced at the PEP-II asymmetric storage rings; we find no evidence for their production in any physics process, and set limits on their production rates that are well below the measured rates for conventional baryons. We also search for Theta(1540)+ produced in interactions of electrons or hadrons in the material of the inner part of the detector. No evidence for this state is found in a sample with much higher statistics than similar electroproduction experiments that claim a signal., Comment: 4 pages, 4 postscript figues, contributed to the Proceedings of QCD 05, Montpellier

Published
2007

31. Experimental access to Transition Distribution Amplitudes with the P̄ANDA experiment at FAIR

Author

M. C. Mora Espí, Pawel Marciniewski, K. Makonyi, Yupeng Yan, S. Wronka, D. Pietreanu, Shaji Kumar, N. Belikov, D. I. Glazier, A. Gillitzer, K. Khanchai, Ajay Kumar Rai, M. Steinen, D. Calvo, Yury Tikhonov, A. A. Derevschikov, T. A. Pocheptsov, R.A. Salmin, P. Balanutsa, B. J. Liu, P. N. Deepak, A. E. Blinov, S. Lange, S. Ryzhikov, G. Kalicy, Arpit Parmar, P. Musiol, G. D. Alexeev, D. P. Watts, Lennart Isaksson, Tobias Stockmanns, E. Gutz, P. F. Dalpiaz, Zhi Liu, D. Marchand, S. Grieser, A. Gerhardt, D. Kangh, L. Fava, A. A. Festchenko, Harphool Kumawat, I. Zimmermann, M. Albrecht, B. Krusche, A. Sanchez Lorente, E. A. Strokovsky, M. A. Pasyuk, J. Ritman, P. C. Vinodkumar, T. Quagli, M.G. Sapozhnikov, Ashok Kumar, Herbert Koch, V. I. Astakhov, V. Serdyuk, K. M. von Würtemberg, D. Münchow, Hans-Georg Zaunick, S. Marcello, M. Ullrich, A. Mustafa, Paola Gianotti, T. Kuske, Michaela Thiel, Kamal K. Seth, S. Schlimme, C. Schwarz, M. Savrie, B. Ketzer, Jerzy Smyrski, E. Etzelmüller, A. G. Fedunov, H. Sohlbach, K. Malgorzata, Victor Bobrovnikov, R.Sh. Teshev, L. Ayut, V.M. Abazov, B. Spruck, B. Kamys, D. Mülhheim, Krzysztof Swientek, S. Schadmand, M. V. Korzihik, Zbigniew Rudy, Matei Eugen Vasile, T. Wasem, J. Schwiening, D. Lehmann, M. Patsyuk, Karin Schönning, W. Czyzycki, M. Zühlsdorf, V. N. Goryachev, A. G. Zorin, A. Davidenko, W. Lauth, B. Fröhlich, A. Amoroso, V. Lucherini, P. Schakel, Grzegorz Korcyl, G.A. Mustafaev, Smbat Grigoryan, Ajit Kumar Mohanty, Grzegorz Filo, R. Veenstra, P. Wüstner, J. Marton, Boris Batyunya, L. Ferrero, A. N. Skachkova, Edward Lisowski, I. Garzia, D. Bremer, T. Eissner, D. Lin, Y.M. Goncharenko, Soumen Paul, A.A. Efremov, Dipanwita Dutta, Alberto Rotondi, M. Michel, B. Slowinski, A. Arefiev, Philip Woods, I. Augustin, Yan Liang, A. Karavdina, M. Greco, P. Rosier, Antoni Szczurek, N. Saito, K. Föhl, T. Schröder, B. Singh, Mariana Nanova, Andreas Herten, Oleg V. Missevitch, S.A. Zaporozhets, K.-T. Brinkmann, Sukanta Dash, A. Filippi, A. Trzcinski, Marek Idzik, M. O. Distler, J. Schumann, C. Sowa, I. Konorov, J. C. van der Weele, Mathias Fink, A. E. Yakutin, B. Kopf, E. Atomssa, A. Pitka, R. Karabowicz, H. H. Leithoff, Angelo Rivetti, S. Pornrad, S. Diehl, M. Maggiora, B. Kröck, R. Duchat, O. Levitskaya, Gianluigi Boca, Krzysztof Korcyl, Gianangelo Bracco, Harald Kleines, F. Nerling, L. Caldeira Balkeståhl, S. Coli, E. Perevalova, T. Gessler, Klaus Peters, A. Magiera, Vassili Kachanov, M. Hawryluk, S. Ong, R. Varma, X. Shen, T. Czyzewski, M. Domagala, S. Godre, M. Zyzak, J. Pettersson, F. Uhlig, F. De Mori, P.J.J. Lemmens, Alexander D. Vasiliev, Mohammed Al-Turany, Q. Hu, Andrzej Kupsc, R. Schmitz, P. Mahlberg, P. De Remigis, C. Schnier, S. Lusso, R. Dosdall, L. Zotti, J. Van de Wiele, A. Britting, S. Fissum, Zhigang Li, Jozef Zlomanczuk, Amiran Tomaradze, S. Spataro, U. Müller, R. Valente, V. Uzhinsky, Giulio Stancari, G. S. Shabratova, I. Keshelashvili, S. Jowzaee, Harald Merkel, C. Guaraldo, S. Li, Christian Schmidt, M. Steinacher, V. Kozlov, Yu.N. Rogov, A. Bianconi, T. Held, V. Datar, Andrei Fedorov, H. Orth, T. Weber, A. Kozela, Piotr Salabura, M. Destefanis, Andrea Lavagno, M. Kuhlmann, B. Ma, J. Pychy, Piotr Lebiedowicz, L. Capozza, Dominik Kwiatkowski, Andrew Levin, A. Wilms, Germán Mazza, Matthias Richter, Wojciech Krzemien, Sean A Dobbs, J. Pochodzalla, I. Shein, H. Ohm, Paolo Montagna, Paul Alois Buhler, Y. Naryshkin, Hans Calén, A. Apostolou, S. Orfanitski, V. Grishin, A. Kashchuk, V. Kormilitsin, Tomasz Fiutowski, M. Mingnore, M. Krebs, A. Dolgolenko, E. Fioravanti, P.-E. Tegnér, A. Chlopik, A. Gromliuk, Andreas Lehrach, I. Georgadze, B. Czech, B. Zwieglinski, Kurt Hansen, W. Schäfer, C. Motzko, R. Kunne, P. Genova, J. Lühning, A. Psyzniak, S. Bianco, H. Smit, Nicola Bianchi, Felice Iazzi, J. Rieke, M. Fritsch, R. Dzhygadlo, O. Corell, E. Pace, S. I. Manaenkov, V. Chandratre, S. Sosio, A. Olshevskiy, T. Johansson, S. Sanchez, Concettina Sfienti, R. F. Parodi, D. Walther, T. Saito, E. Köhler, Zhi Sun, Markus Büscher, P. Kulessa, Magnus Wolke, I. Kisel, V. Tokmenin, Alexander Vodopyanov, J.H. Zhao, C. Wang, M. Kube, M. Kavatsyuk, T. Hennino, Johann Zmeskal, V. Varentsov, C. Morales Morales, S. Esch, R. Kliemt, G. Schepers, S. Poslavskiy, Alessandro Drago, Dan Pantea, M. Imre, W. Eyrich, D. Melnychuk, M.P. Bussa, Dirk Grunwald, I. Lehmann, D. Rodríguez Piñeiro, Kjell Fransson, A. P. Onuchin, Valery Dormenev, M. Rossbach, F. E. Maas, Giuseppe Giraudo, M. Pelizäus, D. P. Mohanta, H. Deppe, C. Rosenbaum, M. Cardinali, A. G. Denig, A. Boukharov, V. Abramov, A. Hayrapetyan, K. Pysz, Vladimir Blinov, A. K. Hergemöller, A. Ryazantsev, K. Kalita, P. Wintz, Raghunath Sahoo, V. Akishina, P. A. Semenov, V. Balanutsa, Mikael Lundin, M. M. Macri, Anne-Laure Martin, A. Karmokov, U. Cahit, A. Demekhin, G. Rosner, W. Erni, S. Plueger, S. Leiber, Michael Werner, L. Schmitt, S. Costanza, Bent Schröder, R. Arora, D. Deermann, M. Leyhe, S.A. Kononov, S. Belostotski, Ulrich Wiedner, Maria Krawczyk, L. V. Malinina, M. Tiemens, Yu.M. Mel'nik, Ch. Schmidt, O. Merle, U. Thoma, M. Babai, A. Semenov, R. Maier, Ankhi Roy, Michael Düren, L. V. Nogach, E. Widmann, A. Zhadanov, Valentino Rigato, Stanisław Kistryn, P. Fedorets, K. Suzuki, D. A. Morozov, Franco Bradamante, Torbjörn Bäck, L. Busso, C. Le Galliard, Bhavin Patel, Alessandro Bressan, K. Chinorat, M. Wojciechowski, A. Lehmann, A.F. Makarov, A. Galoyan, P. Wieczorek, T. Holtmann, Bernd Voss, Aleksandra Wrońska, J. S. Díaz, M. Hoek, D. Veretennikov, F. H. Heinsius, P. Brandys, F. Balestra, H. Flemming, F. Lisowski, H. Younis, Paweł Moskal, G. Maniscalco, P. Jasinski, V. K. Rodionov, J. G. Messchendorp, R. Schnell, O. Miklukho, D. Prasuhn, M. Zambrana, M. Kümmel, L. Cao, I. Marishev, A. Bersani, Bo Cederwall, K. Götzen, L. Lavezzi, S. Vejdani, N. G. Minaev, Herbert Löhner, V. Metag, R. W. Novotny, E. Tomasi-Gustafsson, N. B. Skachkov, A. Cebulla, Bartosz Mindur, V. Chernetsky, B. Seitz, Daniel M. Kaplan, E. K. Koshurnikov, B. Ramstein, A. Kulkarni, B. J. Roy, T. Sefzick, D. Khaneft, D. Branford, A. A. Piskun, Reinhard Beck, S. Bleser, Yu. Yu. Lobanov, R. Siudak, V. I. Lobanov, E. A. Kravchenko, S. Bukreeva, A. Samartsev, U. Thöring, F. Feldbauer, Ting Xiao, Patrick Achenbach, Hongwei Liu, Johannes Peter Wessels, D. Bettoni, Yu.I. Davydov, V. I. Dormenev, Genady Gavrilov, Ch. Wendel, M. Yu. Barabanov, Kirill M. Semenov-Tian-Shansky, R. Birsa, T. Bel, Günter Kemmerling, A. Khoukaz, V. Carassiti, B. Galnander, Jifeng Hu, M. Bragadireanu, I. A. Kuyanov, Bruce Yabsley, Andrey V. Izotov, O. Noll, J. Kunkel, A. Dbeyssi, K. Suvorov, Vivekanand Jha, Wolfgang Kuhn, Hasko Stenzel, O. Malyshev, A. A. Sokolov, U. Kurilla, G. Kuhl, D. Kaiser, P. Strzempek, A. Goerres, J. Biernat, D. G. Ireland, H. Xu, M. K. Suleimanov, G. Sterzenbach, E. Prencipe, A. Ortiz, N. I. Zhuravlev, A. Täschner, A. Gerasimov, T. Triffterer, M. Deiseroth, A. Wilson, Marek Palka, M. Lindemulder, A. Y. Barnyakov, V.Kh. Dodokhov, D. Nicmorus, Andrey Uzunian, A. Ehret, R. Nellen, Ch. Hammann, M. Steinke, V. L. Malyshev, P. Drexler, Richard Wheadon, A. Cotta Ramusino, P. Sarin, Riccardo Introzzi, H. Clement, I. Kulakov, M. Zuehlsdorf, M. Galuska, S. Kliczewski, G.B. Pontecorvo, D. Przyborowski, Mihai Caprini, V. V. Mochalov, M. Jadhav, M. Mikirtychyants, M. Traxler, Frank Goldenbaum, Research unit Nuclear & Hadron Physics, The PANDA Collaboration, Null, Singh, B. P, Erni, W., Keshelashvili, I., Krusche, B., Steinacher, M., Liu, B., Liu, H., Liu, Z., Shen, X., Wang, C., Zhao, J., Albrecht, M., Fink, M., Heinsius, F. H., Held, T., Holtmann, T., Koch, H., Kopf, B., Kümmel, M., Kuhl, G., Kuhlmann, M., Leyhe, M., Mikirtychyants, M., Musiol, P., Mustafa, A., Pelizäus, M., Pychy, J., Richter, M., Schnier, C., Schröder, T., Sowa, C., Steinke, M., Triffterer, T., Wiedner, U., Beck, R., Hammann, C., Kaiser, D., Ketzer, B., Kube, M., Mahlberg, P., Rossbach, M., Schmidt, C., Schmitz, R., Thoma, U., Walther, D., Wendel, C., Wilson, A., Bianconi, A., Bragadireanu, M., Caprini, M., Pantea, D., Pietreanu, D., Vasile, M. E., Patel, B., Kaplan, D., Brandys, P., Czyzewski, T., Czyzycki, W., Domagala, M., Hawryluk, M., Filo, G., Krawczyk, M., Kwiatkowski, D., Lisowski, E., Lisowski, F., Fiutowski, T., Idzik, M., Mindur, B., Przyborowski, D., Swientek, K., Czech, B., Kliczewski, S., Korcyl, K., Kozela, A., Kulessa, P., Lebiedowicz, P., Malgorzata, K., Pysz, K., Schäfer, W., Siudak, R., Szczurek, A., Biernat, J., Jowzaee, S., Kamys, B., Kistryn, S., Korcyl, G., Krzemien, W., Magiera, A., Moskal, P., Palka, M., Psyzniak, A., Rudy, Z., Salabura, P., Smyrski, J., Strzempek, P., Wrońska, A., Augustin, I., Lehmann, I., Nicmorus, D., Schepers, G., Schmitt, L., Al Turany, M., Cahit, U., Capozza, L., Dbeyssi, A., Deppe, H., Dzhygadlo, R., Ehret, A., Flemming, H., Gerhardt, A., Götzen, K., Karabowicz, R., Kliemt, R., Kunkel, J., Kurilla, U., Lehmann, D., Lühning, J., Maas, F., Morales Morales, C., Mora Espí, M. C., Nerling, F., Orth, H., Peters, K., Rodríguez Piñeiro, D., Saito, N., Saito, T., Sánchez Lorente, A., Schmidt, C. J., Schwarz, C., Schwiening, J., Traxler, M., Valente, R., Voss, B., Wieczorek, P., Wilms, A., Zühlsdorf, M., Abazov, V. M., Alexeev, G., Arefiev, A., Astakhov, V. I., Barabanov, M. Y. u., Batyunya, B. V., Davydov, Y. u. I., Dodokhov, V. K. h., Efremov, A. A., Fedunov, A. G., Festchenko, A. A., Galoyan, A. S., Grigoryan, S., Karmokov, A., Koshurnikov, E. K., Lobanov, V. I., Lobanov, Y. u. Y. u., Makarov, A. F., Malinina, L. V., Malyshev, V. L., Mustafaev, G. A., Olshevskiy, A., Pasyuk, M. A., Perevalova, E. A., Piskun, A. A., Pocheptsov, T. A., Pontecorvo, G., Rodionov, V. K., Rogov, Y. u. N., Salmin, R. A., Samartsev, A. G., Sapozhnikov, M. G., Shabratova, G. S., Skachkov, N. B., Skachkova, A. N., Strokovsky, E. A., Suleimanov, M. K., Teshev, R. S. h., Tokmenin, V. V., Uzhinsky, V. V., Vodopyanov, A. S., Zaporozhets, S. A., Zhuravlev, N. I., Zorin, A. G., Branford, D., Glazier, D., Watts, D., Woods, P., Britting, A., Eyrich, W., Lehmann, A., Uhlig, F., Dobbs, S., Seth, K., Tomaradze, A., Xiao, T., Bettoni, D., Carassiti, V., Cotta Ramusino, A., Dalpiaz, P., Drago, A., Fioravanti, E., Garzia, I., Savriè, M., Stancari, G., Akishina, V., Kisel, I., Kulakov, I., Zyzak, M., Arora, R., Bel, T., Gromliuk, A., Kalicy, G., Krebs, M., Patsyuk, M., Zuehlsdorf, M., Bianchi, N., Gianotti, P., Guaraldo, C., Lucherini, V., Pace, E., Bersani, A., Bracco, G., Macri, M., Parodi, R. F., Bianco, S., Bremer, D., Brinkmann, K. T., Diehl, S., Dormenev, V., Drexler, P., Düren, M., Eissner, T., Etzelmüller, E., Föhl, K., Galuska, M., Gessler, T., Gutz, E., Hayrapetyan, A., Hu, J., Kröck, B., Kühn, W., Kuske, T., Lange, S., Liang, Y., Merle, O., Metag, V., Mülhheim, D., Münchow, D., Nanova, M., Novotny, R., Pitka, A., Quagli, T., Rieke, J., Rosenbaum, C., Schnell, R., Spruck, B., Stenzel, H., Thöring, U., Ullrich, M., Wasem, T., Werner, M., Zaunick, H. G., Ireland, D., Rosner, G., Seitz, B., Deepak, P. N., Kulkarni, A. V., Apostolou, A., Babai, M., Kavatsyuk, M., Lemmens, P., Lindemulder, M., Löhner, H., Messchendorp, J., Schakel, P., Smit, H., van der Weele, J. C., Tiemens, M., Veenstra, R., Vejdani, S., Kalita, K., Mohanta, D. P., Kumar, A., Roy, A., Sahoo, R., Sohlbach, H., Büscher, M., Cao, L., Cebulla, A., Deermann, D., Dosdall, R., Esch, S., Georgadze, I., Gillitzer, A., Goerres, A., Goldenbaum, F., Grunwald, D., Herten, A., Hu, Q., Kemmerling, G., Kleines, H., Kozlov, V., Lehrach, A., Leiber, S., Maier, R., Nellen, R., Ohm, H., Orfanitski, S., Prasuhn, D., Prencipe, E., Ritman, J., Schadmand, S., Schumann, J., Sefzick, T., Serdyuk, V., Sterzenbach, G., Stockmanns, T., Wintz, P., Wüstner, P., Xu, H., Li, S., Li, Z., Sun, Z., Rigato, V., Fissum, S., Hansen, K., Isaksson, L., Lundin, M., Schröder, B., Achenbach, P., Bleser, S., Cardinali, M., Corell, O., Deiseroth, M., Denig, A., Distler, M., Feldbauer, F., Fritsch, M., Jasinski, P., Hoek, M., Kangh, D., Karavdina, A., Lauth, W., Leithoff, H., Merkel, H., Michel, M., Motzko, C., Müller, U., Noll, O., Plueger, S., Pochodzalla, J., Sanchez, S., Schlimme, S., Sfienti, C., Steinen, M., Thiel, M., Weber, T., Zambrana, M., Dormenev, V. I., Fedorov, A. A., Korzihik, M. V., Missevitch, O. V., Balanutsa, P., Balanutsa, V., Chernetsky, V., Demekhin, A., Dolgolenko, A., Fedorets, P., Gerasimov, A., Goryachev, V., Varentsov, V., Boukharov, A., Malyshev, O., Marishev, I., Semenov, A., Konorov, I., Paul, S., Grieser, S., Hergemöller, A. K., Khoukaz, A., Köhler, E., Täschner, A., Wessels, J., Dash, S., Jadhav, M., Kumar, S., Sarin, P., Varma, R., Chandratre, V. B., Datar, V., Dutta, D., Jha, V., Kumawat, H., Mohanty, A. K., Roy, B., Yan, Y., Chinorat, K., Khanchai, K., Ayut, L., Pornrad, S., Barnyakov, A. Y., Blinov, A. E., Blinov, V. E., Bobrovnikov, V. S., Kononov, S. A., Kravchenko, E. A., Kuyanov, I. A., Onuchin, A. P., Sokolov, A. A., Tikhonov, Y. A., Atomssa, E., Hennino, T., Imre, M., Kunne, R., Le Galliard, C., Ma, B., Marchand, D., Ong, S., Ramstein, B., Rosier, P., Tomasi Gustafsson, E., Van de Wiele, J., Boca, G., Costanza, S., Genova, P., Lavezzi, L., Montagna, P., Rotondi, A., Abramov, V., Belikov, N., Bukreeva, S., Davidenko, A., Derevschikov, A., Goncharenko, Y., Grishin, V., Kachanov, V., Kormilitsin, V., Melnik, Y., Levin, A., Minaev, N., Mochalov, V., Morozov, D., Nogach, L., Poslavskiy, S., Ryazantsev, A., Ryzhikov, S., Semenov, P., Shein, I., Uzunian, A., Vasiliev, A., Yakutin, A., Yabsley, B., Bäck, T., Cederwall, B., Makónyi, K., Tegnér, P. E., von Würtemberg, K. M., Belostotski, S., Gavrilov, G., Izotov, A., Kashchuk, A., Levitskaya, O., Manaenkov, S., Miklukho, O., Naryshkin, Y., Suvorov, K., Veretennikov, D., Zhadanov, A., Rai, A. K., Godre, S. S., Duchat, R., Amoroso, A., Bussa, M. P., Busso, L., De Mori, F., Destefanis, M., Fava, L., Ferrero, L., Greco, M., Maggiora, M., Maniscalco, G., Marcello, S., Sosio, S., Spataro, S., Zotti, L., Calvo, D., Coli, S., De Remigis, P., Filippi, A., Giraudo, G., Lusso, S., Mazza, G., Mingnore, M., Rivetti, A., Wheadon, R., Balestra, F., Iazzi, F., Introzzi, R., Lavagno, A., Younis, H., Birsa, Renato, Bradamante, Franco, Bressan, Andrea, Martin, Anna, Clement, H., Gålnander, B., Caldeira Balkeståhl, L., Calén, H., Fransson, K., Johansson, T., Kupsc, A., Marciniewski, P., Pettersson, J., Schönning, K., Wolke, M., Zlomanczuk, J., Díaz, J., Ortiz, A., Vinodkumar, P. C., Parmar, A., Chlopik, A., Melnychuk, D., Slowinski, B., Trzcinski, A., Wojciechowski, M., Wronka, S., Zwieglinski, B., Bühler, P., Marton, J., Suzuki, K., Widmann, E., Zmeskal, J., Fröhlich, B., Khaneft, D., Lin, D., Zimmermann, I., and Semenov Tian Shansky, K.

Subjects
Particle physics, (P)Over-Baranda, Nuclear and High Energy Physics, Electroproduction, Hadron, Annihilation, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Particle identification, Nucleon, NO, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Factorization, 0103 physical sciences, Fysik, Invariant mass, ddc:530, Meson Production, Monte-Carlo, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Perturbative QCD, Qcd, Physical Sciences, Exclusive Processes, High Energy Physics::Experiment, Pi(0), Cross-Sections, Energy (signal processing)
Abstract

Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion ($��N$) TDAs from $\bar{p}p \to e^+e^- ��^0$ reaction with the future PANDA detector at the FAIR facility. At high center of mass energy and high invariant mass squared of the lepton pair $q^2$, the amplitude of the signal channel $\bar{p}p \to e^+e^- ��^0$ admits a QCD factorized description in terms of $��N$ TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring $\bar{p}p \to e^+e^- ��^0$ with the PANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. $\bar{p}p \to ��^+��^- ��^0$ were performed for the center of mass energy squared $s = 5$ GeV$^2$ and $s = 10$ GeV$^2$, in the kinematic regions $3.0 < q^2 < 4.3$ GeV$^2$ and $5 < q^2 < 9$ GeV$^2$, respectively, with a neutral pion scattered in the forward or backward cone $| \cos��_{��^0}| > 0.5 $ in the proton-antiproton center of mass frame. Results of the simulation show that the particle identification capabilities of the PANDA detector will allow to achieve a background rejection factor of $5\cdot 10^7$ ($1\cdot 10^7$) at low (high) $q^2$ for $s=5$ GeV$^2$, and of $1\cdot 10^8$ ($6\cdot 10^6$) at low (high) $q^2$ for $s=10$ GeV$^2$, while keeping the signal reconstruction efficiency at around $40\%$. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to $2$ fb$^{-1}$ of integrated luminosity. (.../...), 19 pages, 7 figures (some multiple), 2 tables (each double), preprint of an article for epj - v2

Published
2015

32. A Disc-DIRC Cherenkov detector with high resolution micro channel plate photomultiplier tubes

Author

L. Schmitt, M. Zühlsdorf, T. Keri, V.Kh. Dodokhov, M. Hoek, R. Dzhygadlo, F. Uhlig, L. Gruber, Johann Marton, K. Götzen, Michaela Thiel, G. Kalicy, W. Eyrich, B. Kröck, K. Föhl, M. Cardinali, Ken Suzuki, O. Merle, R. A. Montgomery, J. Schwiening, D. Lehmann, A. Hayrapetyan, E. Etzelmüller, M. Krebs, Euan N. Cowie, A. Gerhardt, W. Lauth, Concettina Sfienti, S. Schlimme, C. Schwarz, Paul Alois Buhler, M. Traxler, K. Peters, Michael Düren, A. Lehmann, G. Schepers, A. Britting, Patrick Achenbach, J. Rieke, M. Patsyuk, and Harphool Kumawat

Subjects
Physics, Photomultiplier, Photon, Physics::Instrumentation and Detectors, Cherenkov detector, business.industry, Detector, Radiation, Particle identification, law.invention, Optics, law, Microchannel plate detector, business, Cherenkov radiation
Abstract

The upcoming PANDA Experiment at FAIR in Germany will be equipped with a novel Cherenkov detector type for high-energy particle identification. This very compact Disc-DIRC detector uses a large disc-shaped fused silica plate of 2 cm thickness as its Cherenkov radiator. The internally reflected Cherenkov light is transported to the rim of the disc where it is focused by quartz light guides onto microchannel plate photomultiplier tubes (MCP-PMTs) with high spatial resolution (pitch 0.5 mm) and high time resolution (σ ≈ 100 ps). The device has an active area of about 3 m2 and will be able to identify pions and kaons with a separation power of more than 3σ in the momentum range up to 4 GeV/c. It has 32400 individual pixels and each can handle a mean photon rate of up to about 100 kHz. The presented design deals with numerous challenges that come with the very hostile environment in which the detector has to function properly, caused by the presence of high magnetic fields of up to 2 Tesla, high levels of radiation, high particle and background rates and a tight spatial volume. First test measurements have shown the performance of the design.

Published
2014

33. Technical design report for the $\overline{P}$ ANDA (AntiProton Annihilations at Darmstadt) Straw Tube Tracker

Author

W. Erni, I. Keshelashvili, B. Krusche, M. Steinacher, Y. Heng, Z. Liu, H. Liu, X. Shen, Q. Wang, H. Xu, A. Aab, M. Albrecht, J. Becker, A. Csapó, F. Feldbauer, M. Fink, P. Friedel, F. H. Heinsius, T. Held, L. Klask, H. Koch, B. Kopf, S. Leiber, M. Leyhe, C. Motzko, M. Pelizäus, J. Pychy, B. Roth, T. Schröder, J. Schulze, C. Sowa, M. Steinke, T. Trifterer, U. Wiedner, J. Zhong, R. Beck, S. Bianco, K. T. Brinkmann, C. Hammann, F. Hinterberger, D. Kaiser, R. Kliemt, M. Kube, A. Pitka, T. Quagli, C. Schmidt, R. Schmitz, R. Schnell, U. Thoma, P. Vlasov, D. Walther, C. Wendel, T. Würschig, H. G. Zaunick, A. Bianconi, M. Bragadireanu, M. Caprini, D. Pantea, D. Pantelica, D. Pietreanu, L. Serbina, P. D. Tarta, D. Kaplan, T. Fiutowski, M. Idzik, B. Mindur, D. Przyborowski, K. Swientek, B. Czech, M. Kistryn, S. Kliczewski, A. Kozela, P. Kulessa, P. Lebiedowicz, K. Pysz, W. Schäfer, R. Siudak, A. Szczurek, S. Jowzaee, M. Kajetanowicz, B. Kamys, S. Kistryn, G. Korcyl, K. Korcyl, W. Krzemien, A. Magiera, P. Moskal, M. Palka, Z. Rudy, P. Salabura, J. Smyrski, A. Wrońska, I. Augustin, I. Lehmann, D. Nimorus, G. Schepers, M. Al-Turany, R. Arora, H. Deppe, H. Flemming, A. Gerhardt, K. Götzen, A. F. Jordi, G. Kalicy, R. Karabowicz, D. Lehmann, B. Lewandowski, J. Lühning, F. Maas, H. Orth, M. Patsyuk, K. Peters, T. Saito, C. J. Schmidt, L. Schmitt, C. Schwarz, J. Schwiening, M. Traxler, B. Voss, P. Wieczorek, A. Wilms, M. Zühlsdorf, V. M. Abazov, G. Alexeev, A. Arefiev, V. I. Astakhov, M. Yu. Barabanov, B. V. Batyunya, Yu. I. Davydov, V. Kh. Dodokhov, A. A. Efremov, A. G. Fedunov, A. A. Festchenko, A. S. Galoyan, S. Grigoryan, A. Karmokov, E. K. Koshurnikov, V. I. Lobanov, Yu. Yu. Lobanov, A. F. Makarov, L. V. Malinina, V. L. Malyshev, G. A. Mustafaev, A. Olshevskiy, M. A. Pasyuk, E. A. Perevalova, A. A. Piskun, T. A. Pocheptsov, G. Pontecorvo, V. K. Rodionov, Yu. N. Rogov, R. A. Salmin, A. G. Samartsev, M. G. Sapozhnikov, G. S. Shabratova, A. N. Skachkova, N. B. Skachkov, E. A. Strokovsky, M. K. Suleimanov, R. Sh. Teshev, V. V. Tokmenin, V. V. Uzhinsky, A. S. Vodopyanov, S. A. Zaporozhets, N. I. Zhuravlev, A. G. Zorin, D. Branford, D. Glazier, D. Watts, P. Woods, A. Britting, W. Eyrich, A. Lehmann, F. Uhlig, S. Dobbs, Z. Metreveli, K. Seth, A. Tomaradze, T. Xiao, D. Bettoni, V. Carassiti, A. Cotta Ramusino, P. Dalpiaz, A. Drago, E. Fioravanti, I. Garzia, M. Savriè, G. Stancari, N. Bianchi, P. Gianotti, C. Guaraldo, V. Lucherini, D. Orecchini, E. Pace, A. Bersani, G. Bracco, M. Macri, R. F. Parodi, D. Bremer, V. Dormenev, P. Drexler, M. Düren, T. Eissner, K. Föhl, M. Galuska, T. Gessler, A. Hayrapetyan, J. Hu, P. Koch, B. Kröck, W. Kühn, S. Lange, Y. Liang, O. Merle, V. Metag, M. Moritz, D. Münchow, M. Nanova, R. Novotny, B. Spruck, H. Stenzel, T. Ullrich, M. Werner, C. Euan, M. Hoek, D. Ireland, T. Keri, R. Montgomery, D. Protopopescu, G. Rosner, B. Seitz, M. Babai, A. Glazenborg-Kluttig, M. Kavatsyuk, P. Lemmens, M. Lindemulder, H. Löhner, J. Messchendorp, H. Moeini, P. Schakel, F. Schreuder, H. Smit, G. Tambave, J. C. van der Weele, R. Veenstra, H. Sohlbach, M. Büscher, D. Deermann, R. Dosdall, S. Esch, A. Gillitzer, F. Goldenbaum, D. Grunwald, S. Henssler, A. Herten, Q. Hu, G. Kemmerling, H. Kleines, V. Kozlov, A. Lehrach, R. Maier, M. Mertens, H. Ohm, S. Orfanitski, D. Prasuhn, T. Randriamalala, J. Ritman, M. Röder, S. Schadmand, V. Serdyuk, G. Sterzenbach, T. Stockmanns, P. Wintz, P. Wüstner, J. Kisiel, S. Li, Z. Li, Z. Sun, V. Rigato, S. Fissum, K. Hansen, L. Isaksson, M. Lundin, B. Schröder, P. Achenbach, S. Bleser, U. Cahit, M. Cardinali, A. Denig, M. Distler, M. Fritsch, P. Jasinski, D. Kangh, A. Karavdina, W. Lauth, H. Merkel, M. Michel, M. C. Mora Espi, U. Müller, J. Pochodzalla, S. Sanchez, A. Sanchez-Lorente, S. Schlimme, C. Sfienti, M. Thiel, T. Weber, V. I. Dormenev, A. A. Fedorov, M. V. Korzhik, O. V. Missevitch, V. Balanutsa, V. Chernetsky, A. Demekhin, A. Dolgolenko, P. Fedorets, A. Gerasimov, V. Goryachev, V. Varentsov, A. Boukharov, O. Malyshev, I. Marishev, A. Semenov, F. Böhmer, S. Dørheim, B. Ketzer, S. Paul, A. K. Hergemöller, A. Khoukaz, E. Köhler, A. Täschner, J. Wessels, R. Varma, A. Chaterjee, V. Jha, S. Kailas, B. J. Roy, Y. Yan, K. Chinorat, K. Khanchai, L. Ayut, S. Pomrad, E. Baldin, K. Kotov, S. Peleganchuk, Yu. Tikhonov, J. Boucher, V. Chambert, A. Dbeyssi, M. Gumberidze, T. Hennino, M. Imre, R. Kunne, C. Le Galliard, B. Ma, D. Marchand, A. Maroni, S. Ong, B. Ramstein, P. Rosier, E. Tomasi-Gustafsson, J. Van de Wiele, G. Boca, A. Braghieri, S. Costanza, P. Genova, L. Lavezzi, P. Montagna, A. Rotondi, V. Abramov, N. Belikov, A. Davidenko, A. Derevschikov, Y. Goncharenko, V. Grishin, V. Kachanov, D. Konstantinov, V. Kormilitsin, Y. Melnik, A. Levin, N. Minaev, V. Mochalov, D. Morozov, L. Nogach, S. Poslavskiy, A. Ryazantsev, S. Ryzhikov, P. Semenov, I. Shein, A. Uzunian, A. Vasiliev, A. Yakutin, T. Bäck, B. Cederwall, K. Makónyi, P. E. Tegnér, K. M. von Würtemberg, S. Belostotski, G. Gavrilov, A. Itzotov, A. Kashchuk, A. Kisselev, P. Kravchenko, O. Levitskaya, S. Manaenkov, O. Miklukho, Y. Naryshkin, D. Veretennikov, V. Vikhrov, A. Zhadanov, D. Alberto, A. Amoroso, M. P. Bussa, L. Busso, F. De Mori, M. Destefanis, L. Fava, L. Ferrero, M. Greco, M. Maggiora, S. Marcello, S. Sosio, S. Spataro, L. Zotti, D. Calvo, S. Coli, P. De Remigis, A. Filippi, G. Giraudo, S. Lusso, G. Mazza, O. Morra, A. Rivetti, R. Wheadon, F. Iazzi, A. Lavagno, H. Younis, R. Birsa, F. Bradamante, A. Bressan, A. Martin, H. Clement, B. Galander, L. Caldeira Balkeståhl, H. Calén, K. Fransson, T. Johansson, A. Kupsc, P. Marciniewski, E. Thomé, M. Wolke, J. Zlomanczuk, J. Díaz, A. Ortiz, K. Dmowski, P. Duda, R. Korzeniewski, B. Slowinski, A. Chlopik, Z. Guzik, K. Kosinski, D. Melnychuk, A. Wasilewski, M. Wojciechowski, S. Wronka, A. Wysocka, B. Zwieglinski, P. Bühler, O. N. Hartman, P. Kienle, J. Marton, K. Suzuki, E. Widmann, and J. Zmeskal

Subjects
Straw tube, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Computer science, Detector, Tracking (particle physics), 01 natural sciences, Particle identification, NO, Set (abstract data type), Computer Science::Hardware Architecture, 0103 physical sciences, Trajectory, Benchmark (computing), Nuclear Experiment, 010306 general physics, Simulation
Abstract

This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the $\bar{P}$ANDA target spectrometer. The STT encloses a Micro-Vertex-Detector (MVD) for the inner tracking and is followed in beam direction by a set of GEM stations. The tasks of the STT are the measurement of the particle momentum from the reconstructed trajectory and the measurement of the specific energy loss for a particle identification. Dedicated simulations with full analysis studies of certain proton-antiproton reactions, identified as being benchmark tests for the whole $\bar{P}$ANDA scientific program, have been performed to test the STT layout and performance. The results are presented, and the time lines to construct the STT are described.

Published
2013

34. Design Studies of the PWO Forward End-cap Calorimeter for PANDA

Author

M. Babai, K. Götzen, S. Spataro, M. Kavatsyuk, Herbert Löhner, Aleksandra Biegun, M. Lindemulder, Mohammad Al-Turany, J. G. Messchendorp, O. Bondarenko, H. Smit, H. Moeini, R. Veenstra, D. Melnychuk, Research unit Nuclear & Hadron Physics, and KVI - Center for Advanced Radiation Technology

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Photon, Physics - Instrumentation and Detectors, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Monte Carlo method, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), PERFORMANCE, Tracking (particle physics), Particle identification, Charged particle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics::Experiment, Nuclear Experiment, DETECTOR
Abstract

The PANDA detection system at FAIR, Germany, is designed to study antiproton-proton annihilations, in order to investigate among others the realm of charm-meson states and glueballs, which has still much to reveal. The yet unknown properties of this field are to be unraveled through studying QCD phenomena in the non-perturbative regime. The multipurpose PANDA detector will be capable of tracking, calorimetry, and particle identification, and is foreseen to run at high luminosities providing average reaction rates up to 20 Million interactions/s. The envisaged physics program requires measurements of photons and charged particles with excellent energy, position, and time resolutions. The electromagnetic calorimeter (EMC) will serve as one of the basic components of the detector setup and comprises cooled Lead-Tungstate (PbWO4) crystals. This paper presents the mechanical design of the Forward End-cap calorimeter and analyses the response of this detector component in conjunction with the full EMC and the complete PANDA detector. The simulation studies are focused on the performance of the planned EMC with respect to the energy and spatial resolution of the reconstructed photons. Results of the Monte Carlo simulations, excluding very low-energy photons, have been validated by data obtained from a prototype calorimeter and shown to fulfil the requirements imposed by the PANDA physics program., Comment: 22 Pages, 24 Figures, 4 Tables

Published
2013
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35. Lifetime of MCP-PMTs

Author

A. Lehmann, A. Britting, W. Eyrich, M. Pfaffinger, F. Uhlig, A. Belias, R. Dzhygadlo, A. Gerhardt, K. Götzen, G. Kalicy, M. Krebs, D. Lehmann, F. Nerling, M. Patsyuk, K. Peters, G. Schepers, L. Schmitt, C. Schwarz, J. Schwiening, M. Traxler, M. Zühlsdorf, M. Düren, E. Etzelmüller, K. Föhl, A. Hayrapetyan, B. Kröck, O. Merle, J. Rieke, M. Schmidt, E. Cowie, T. Keri, P. Achenbach, M. Cardinali, M. Hoek, W. Lauth, S. Schlimme, C. Sfienti, and M. Thiel

Subjects
Physics, Photomultiplier, Photon, 010308 nuclear & particles physics, business.industry, Detector, 01 natural sciences, Cathode, Anode, law.invention, Atomic layer deposition, Optics, law, 0103 physical sciences, Quantum efficiency, 010306 general physics, business, Instrumentation, Mathematical Physics, Order of magnitude
Abstract

The main particle identification detector of the PANDA experiment will be of the DIRC type. For various reasons the favored sensors are micro-channel plate photo multipliers (MCP-PMTs). Despite many advantageous properties MCP-PMTs until recently had serious problems with aging issues at high photon rates. In this paper we present a simultaneous aging measurement for the latest MCP-PMTs of BINP, Hamamatsu (R10754X) and PHOTONIS (XP85112). In these devices specific countermeasures have been applied to reduce the loss of quantum efficiency (QE) of the photo cathode (PC) with increasing anode charge, which is the main feature of aging. We find that the new techniques show a significantly increased lifetime of the concerning MCP-PMTs. With several surface scans across the active area of the MCP-PMTs we find evidence that the loss of QE develops from the rims and corners of the PC. In addition, the spectral QE of the MCP-PMTs is given as a function of the integrated anode charge revealing that for the R10754X the QE drops faster for long wavelenghts than for short ones. At this point of the ongoing measurements the XP85112 does not show any significant aging signs after 5.6 C/cm2 which is a more than an order of magnitude improvement compared to former MCP-PMTs and corresponds to more than 10 years of running time for the PANDA Barrel DIRC. In this PMT the micro-channels are coated by an atomic layer deposition (ALD) technique which currently appears to be the most promising countermeasure against the aging of MCP-PMTs.

Published
2016

36. Resolution changes of MCP-PMTs in magnetic fields

Author

J. Rieke, A. Belias, R. Dzhygadlo, A. Gerhardt, K. Götzen, G. Kalicy, M. Krebs, D. Lehmann, F. Nerling, M. Patsyuk, K. Peters, G. Schepers, L. Schmitt, C. Schwarz, J. Schwiening, M. Traxler, M. Zühlsdorf, A. Britting, W. Eyrich, A. Lehmann, M. Pfaffinger, F. Uhlig, M. Düren, E. Etzelmüller, K. Föhl, A. Hayrapetyan, B. Kröck, O. Merle, M. Schmidt, E. Cowie, T. Keri, P. Achenbach, M. Cardinali, M. Hoek, W. Lauth, S. Schlimme, C. Sfienti, and M. Thiel

Subjects
Physics, Photomultiplier, Photon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Resolution (electron density), Electrical engineering, 01 natural sciences, 030218 nuclear medicine & medical imaging, Magnetic field, Anode, 03 medical and health sciences, 0302 clinical medicine, Optics, Position (vector), 0103 physical sciences, business, Instrumentation, Radiation hardening, Mathematical Physics
Abstract

Micro-channel plate photomultiplier tubes (MCP-PMTs) are chosen in many applications that have to cope with strong magnetic fields. The DIRC detectors of the PANDA experiment plan to employ them as they show excellent timing characteristics, radiation hardness, relatively low dark count rates and sufficient lifetime. This article mainly focuses on the performance of the position reconstruction of detected photons. Two different MCP-PMTs with segmented anode geometries have been tested in magnetic fields of different strengths. The variation of their performance has been studied. The measurements show improved position resolution and image shifts with increasing magnetic field strength.

Published
2016

37. ComPWA: A common amplitude analysis framework for PANDA

Author

F Feldbauer, M Fritsch, M Michel, Anastasia Karavdina, K Götzen, P Jasinski, and K Peters

Subjects
History, Engineering, business.industry, Comparability, Extension (predicate logic), computer.software_genre, Rotation formalisms in three dimensions, Computer Science Applications, Education, Amplitude, Software, Data mining, business, Quality assurance, computer, Free parameter, Agile software development
Abstract

A large part of the physics program of the PANDA experiment at FAIR deals with the search for new conventional and exotic hadronic states like e.g. hybrids and glueballs. For many analyses PANDA will need an amplitude analysis, e.g. a partial wave analysis (PWA), to identify possible candidates and for the classification of known states. Therefore, a new, agile and efficient amplitude analysis framework ComPWA is under development. It is modularized to provide easy extension with models and formalisms as well as fitting of multiple datasets, even from different experiments. Experience from existing PWA programs was used to fix the requirements of the framework and to prevent it from restrictions. It will provide the standard estimation and optimization routines like Minuit2 and the Geneva library and be open to insert additional ones. The challenges involve parallelization, fitting with a high number of free parameters, managing complex meta-fits and quality assurance / comparability of fits. To test and develop the software, it will be used with data from running experiments like BaBar or BESIII. These proceedings show the status of the framework implementation as well as first test results.

Published
2014

38. Fast simulations for the PANDA experiment at FAIR

Author

K Götzen

Subjects
Physics, History, business.industry, Detector, Computer Science Applications, Education, Proton (rocket family), Software, Antiproton, Hadron spectroscopy, Benchmark (computing), Facility for Antiproton and Ion Research, High Energy Physics::Experiment, Nuclear Experiment, business, Parametrization, Simulation
Abstract

As one of the primary experiments to be located at the new Facility for Antiproton and Ion Research the PANDA experiment aims for high quality hadron spectroscopy from antiproton proton collisions. The versatile and comprehensive projected physics program requires an elaborate detector design. For optimization and tuning of the individual detector components a reliable simulation is mandatory, which allows to investigate different design options as well as estimate acceptance and efficiency of various physics benchmark channels. A realistic simulation based on full transport software often needs a lot of computing time. Therefore, a fast simulation providing effective parametrization of detector acceptance and resolution was implemented.

Published
2008

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