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1. 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

2. GeantV: Results from the prototype of concurrent vector particle transport simulation in HEP

Author: Harphool Kumawat, O. Chaparro-Amaro, Ph Canal, Dmitri Konstantinov, A. Maldonado-Romo, Sergio F Novaes, T Nikitina, R. Schmitz, R. Seghal, Farah Hariri, D. Elvira, Calebe De Paula Bianchini, G. Cosmo, A. Ananya, M. Gravey, Mihaly Novak, Pere Mato, A. Bhattacharyya, W. Pokorski, Sw. Banerjee, Y. Zhang, J. Martínez-Castro, Alberto Ribon, G. Bitzes, Sandro Christian Wenzel, Joel Fuentes, Marilena Bandieramonte, John Apostolakis, Oksana Shadura, E. Tcherniaev, Andrei Gheata, V. Drogan, Guilherme Amadio, Federico Carminati, S. Vallecorsa, I. Goulas, L Duhem, Mihaela Gheata, Kevin Pedro, Soon Yung Jun, J. G. Lima, and J. C. De Fine Licht
Subjects: Nuclear and High Energy Physics, Computer science, Other Fields of Physics, FOS: Physical sciences, Context (language use), computer.software_genre, 01 natural sciences, Computational science, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Software, 0103 physical sciences, Computer Science (miscellaneous), Code (cryptography), Use case, 010306 general physics, Large Hadron Collider, 010308 nuclear & particles physics, business.industry, hep-ex, Detector, Computational Physics (physics.comp-ph), Simulation software, physics.comp-ph, Vectorization (mathematics), business, computer, Physics - Computational Physics, Particle Physics - Experiment
Abstract: Full detector simulation was among the largest CPU consumer in all CERN experiment software stacks for the first two runs of the Large Hadron Collider (LHC). In the early 2010's, the projections were that simulation demands would scale linearly with luminosity increase, compensated only partially by an increase of computing resources. The extension of fast simulation approaches to more use cases, covering a larger fraction of the simulation budget, is only part of the solution due to intrinsic precision limitations. The remainder corresponds to speeding-up the simulation software by several factors, which is out of reach using simple optimizations on the current code base. In this context, the GeantV R&D project was launched, aiming to redesign the legacy particle transport codes in order to make them benefit from fine-grained parallelism features such as vectorization, but also from increased code and data locality. This paper presents extensively the results and achievements of this R&D, as well as the conclusions and lessons learnt from the beta prototype., 34 pages, 26 figures, 24 tables
Published: 2020

3. Interstrip capacitances of the readout board used in large triple-GEM detectors for the CMS Muon Upgrade

Author: T. Hakkarainen, Camilla Galloni, Shivali Malhotra, Harphool Kumawat, Stephen Butalla, Tao Huang, M. Luhach, H. Kaur, Antonis Agapitos, Anterpreet Kaur, Caterina Aruta, S. AbuZeid, Balashangar Kailasapathy, David Saltzberg, Waleed Syed Ahmed, Reyer Band, N. Lacalamita, A. Conde Garcia, F. Cassese, A. Ranieri, Kithsiri Malagalage, A. K. Virdi, G. Raffone, Henri Petrow, Christine Mclean, G. Saviano, Ddc Wickramarathna, Mykhailo Dalchenko, Shaji Kumar, Inkyu Park, Y. Ban, Alessandro Braghieri, Georgi Sultanov, D. Roy, Rui de Oliveira, Andrius Juodagalvis, Alibordi Muhammad, S. Martiradonna, Milena Misheva, Ahmed Ali Abdelalim, Ian Watson, E. Romano, Q. Li, Jared Sturdy, Paolo Vitulo, Stefano Bianco, J. Weatherwax, J. D. Ruiz, Luisa Benussi, Daniel Teyssier, Manisha Lohan, Christos Roskas, Francesco Ivone, Louis Moureaux, S. Gigli, Davide Piccolo, Nadeesha Wickramage, Elizabeth Starling, I. Yu, Cristina Riccardi, D. Jeong, D.R. Mishra, Roumyana Hadjiiska, Tuure Tuuva, Unki Yang, N. Cavallo, Jasvinder A. Singh, A. De Iorio, Marek Gruchala, Pierluigi Paolucci, M. Rahmani, Mujahid Abbas, J. Babbar, Sven Dildick, Alexei Safonov, D. Y. Wang, Jeremie Alexandre Merlin, Felipe Ramirez, Jay Hauser, Michele Bianco, Nayana Majumdar, G. De Robertis, M. Gola, Lisa Borgonovi, Hassan Abdalla, A. Wajid, Piet Verwilligen, Laurent Pétré, Brian Dorney, Biagio Rossi, Zoltan Szillasi, R. Sharma, Chiara Aime, Othmane Bouhali, Kerstin Hoepfner, M. Franco, Sushil Chauhan, Nickolas Mccoll, J. Yongho, Z. Y. You, Y. Yang, I. Vai, Luca Lista, I. Asghar, Yasser Maghrbi, Vipin Bhatnagar, A. Gutierrez, Marcus Hohlmann, M. Naimuddin, Hafeez R. Hoorani, Davide Fiorina, Kun Wang, Mircho Rodozov, Anna Colaleo, S. Braibant, Lalit Mohan Pant, Wren Vetens, Carlos Avila, A. Irshad, Mariana Shopova, Plamen Iaydjiev, A. Peck, Sunil Bansal, Andrew Levin, P. E. Karchin, A. Kumar, Paolo Giacomelli, N. Vanegas, Federica Maria Simone, Michael Tytgat, Robin Erbacher, Dylan Teague, D. Dell Olio, Simone Calzaferri, Supratik Mukhopadhyay, J. Collins, Salvatore Nuzzo, Marcello Maggi, Shawn Zaleski, A. Ahmad, Kevin Black, H. Keller, Aashaq Shah, Kalpanie Liyanage, Antonio Russo, D. Pierluigi, Johny Jaramillo, G. De Lentdecker, Awder Mohammed Ahmed, G. Passeggio, Inseok Yoon, Francesco Fallavollita, E. Soldani, Rosamaria Venditti, F. Loddo, Welathantri Gd Dharmaratna, A. Ferraro, F. Licciulli, J. S. H. Lee, Martina Ressegotti, Brent Stone, L. Passamonti, Agostino De Iorio, Pawan Kumar Netrakanti, J. H. Kim, Elisa Fontanesi, G. Rashevski, Hyun-Soo Kim, Marcello Abbrescia, Giovanni Mocellin, Francesco Fabozzi, Upul Sonnadara, Prasant Kumar Rout, Nimantha Perera, Jason Gilmore, Vivekanand Jha, Michele Arturo Caponero, Teruki Kamon, S. Muhammad, Archana Sharma, P. Aspell, Evaldas Juska, Abbas, M, Abbrescia, M, Abdalla, H, Abdelalim, A, AbuZeid, S, Agapitos, A, Ahmad, A, Ahmed, A, Ahmed, W, Aime, C, Aruta, C, Asghar, I, Aspell, P, Avila, C, Babbar, J, Ban, Y, Band, R, Bansal, S, Benussi, L, Bhatnagar, V, Bianco, M, Bianco, S, Black, K, Borgonovi, L, Bouhali, O, Braghieri, A, Braibant, S, Butalla, S, Calzaferri, S, Caponero, M, Cassese, F, Cavallo, N, Chauhan, S, Colaleo, A, Collins, J, Garcia, AC, Dalchenko, M, De Iorio, A, De Lentdecker, G, Olio, DD, De Robertis, G, Dharmaratna, W, Dildick, S, Dorney, B, Erbacher, R, Fabozzi, F, Fallavollita, F, Ferraro, A, Fiorina, D, Fontanesi, E, Franco, M, Galloni, C, Giacomelli, P, Gigli, S, Gilmore, J, Gola, M, Gruchala, M, Gutierrez, A, Hadjiiska, R, Hakkarainen, T, Hauser, J, Hoepfner, K, Hohlmann, M, Hoorani, H, Huang, T, Iaydjiev, P, Irshad, A, Iorio, A, Ivone, F, Jaramillo, J, Jeong, D, Jha, V, Juodagalvis, A, Juska, E, Kailasapathy, B, Kamon, T, Karchin, P, Kaur, A, Kaur, H, Keller, H, Kim, H, Kim, J, Kumar, A, Kumar, S, Kumawat, H, Lacalamita, N, Lee, JSH, Levin, A, Li, Q, Licciulli, F, Lista, L, Liyanage, K, Loddo, F, Lohan, M, Luhach, M, Maggi, M, Maghrbi, Y, Majumdar, N, Malagalage, K, Malhotra, S, Martiradonna, S, Mccoll, N, McLean, C, Merlin, J, Misheva, M, Mishra, D, Mocellin, G, Moureaux, L, Muhammad, A, Muhammad, S, Mukhopadhyay, S, Naimuddin, M, Netrakanti, P, Nuzzo, S, Oliveira, R, Pant, L, Paolucci, P, Park, IC, Passamonti, L, Passeggio, G, Peck, A, Perera, N, Petre, L, Petrow, H, Piccolo, D, Pierluigi, D, Raffone, G, Rahmani, M, Ramirez, F, Ranieri, A, Rashevski, G, Ressegotti, M, Riccardi, C, Rodozov, M, Romano, E, Roskas, C, Rossi, B, Rout, P, Roy, D, Ruiz, JD, Russo, A, Safonov, A, Saltzberg, D, Saviano, G, Shah, A, Sharma, A, Sharma, R, Shopova, M, Simone, F, Singh, J, Soldani, E, Sonnadara, U, Starling, E, Stone, B, Sturdy, J, Sultanov, G, Szillasi, Z, Teague, D, Teyssier, D, Tuuva, T, Tytgat, M, Vai, I, Vanegas, N, Venditti, R, Verwilligen, P, Vetens, W, Virdi, A, Vitulo, P, Wajid, A, Wang, D, Wang, K, Watson, I, Weatherwax, J, Wickramage, N, Wickramarathna, DDC, Yang, Y, Yang, U, Yongho, J, Yoon, I, You, Z, Yu, I, and Zaleski, S
Subjects: MICROPIC, Design modification, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, transport, multiplication and induction, pulse formation, electron, emission, etc), numerical methods: finite element, electric fields, 01 natural sciences, High Energy Physics - Experiment, 030218 nuclear medicine & medical imaging, law.invention, Reduction (complexity), design [detector], High Energy Physics - Experiment (hep-ex), 0302 clinical medicine, Micropattern gaseous detectors (MSGC, GEM, THGEM, law, Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc), Detectors and Experimental Techniques, Computer science, information & general works, physics.ins-det, Instrumentation, Mathematical Physics, Physics, Detector modelling and simulations II (electric fields, charge, GEM, CMS, Electron multiplier, Settore FIS/01 - Fisica Sperimentale, Detector, Instrumentation and Detectors (physics.ins-det), Finite element method, Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission, etc), spectrometer: upgrade, Upgrade, finite element [numerical methods], MICROMEGAS, MHSP, Particle Physics - Experiment, Detector modelling and simulations II, charge transport, multiplication and induction, pulse formation, electron emission, Micropattern gaseous detectors, MSGC, THGEM, RETHGEM, InGrid, noise, spectrometer [muon], FOS: Physical sciences, STRIPS, 03 medical and health sciences, Optics, 0103 physical sciences, ddc:610, numerical calculations, detector: design, Muon, hep-ex, 010308 nuclear & particles physics, business.industry, electrode, gas electron multiplier, ddc:000, upgrade [spectrometer], business, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc), muon: spectrometer
Abstract: We present analytical calculations, Finite Element Analysis modeling, and physical measurements of the interstrip capacitances for different potential strip geometries and dimensions of the readout boards for the GE2/1 triple-Gas Electron Multiplier detector in the CMS muon system upgrade. The main goal of the study is to find configurations that minimize the interstrip capacitances and consequently maximize the signal-to-noise ratio for the detector. We find agreement at the 1.5--4.8% level between the two methods of calculations and on the average at the 17% level between calculations and measurements. A configuration with halved strip lengths and doubled strip widths results in a measured 27--29% reduction over the original configuration while leaving the total number of strips unchanged. We have now adopted this design modification for all eight module types of the GE2/1 detector and will produce the final detector with this new strip design., Comment: 22 pages, 14 figures
Published: 2020

4. Performance of prototype GE1∕1 chambers for the CMS muon spectrometer upgrade

Author: Stefano Colafranceschi, Lalit Mohan Pant, Laurent Pétré, Paolo Giacomelli, F. Loddo, J. D. Ruiz, Kithsiri Malagalage, A. K. Virdi, Jeremie Alexandre Merlin, Nayana Majumdar, G. De Robertis, D. Jeong, A. Wajid, Mykhailo Dalchenko, G. Saviano, Tao Huang, M. Luhach, Andrew Levin, Sushil Chauhan, Nickolas Mccoll, D. Dell Olio, Marcus Hohlmann, Prasant Kumar Rout, Anterpreet Kaur, Jason Gilmore, Jay Hauser, Q. Li, Luisa Benussi, Vivekanand Jha, Shawn Zaleski, Francesco Fallavollita, E. Soldani, S. Abu Zeid, Elizabeth Starling, J. Babbar, Rui de Oliveira, Andrius Juodagalvis, P. E. Karchin, Othmane Bouhali, A. Kumar, Antonis Agapitos, A. Ahmad, Kevin Black, D.R. Mishra, A. Ranieri, Hafeez R. Hoorani, Elisa Fontanesi, S. Braibant, Davide Fiorina, Welathantri Gd Dharmaratna, David Saltzberg, Georgi Sultanov, Hyun-Soo Kim, Waleed Syed Ahmed, Biagio Rossi, S. Kumar, Roumyana Hadjiiska, H. Keller, G. Raffone, Michele Bianco, Marek Gruchala, Aashaq Shah, F. Licciulli, Mircho Rodozov, Pierluigi Paolucci, J. S. H. Lee, Luca Lista, M. Rahmani, Felipe Ramirez, N. Vanegas, Martina Ressegotti, Piet Verwilligen, Brian Dorney, S. Muhammad, Kerstin Hoepfner, Alexei Safonov, Michael Tytgat, Alibordi Muhammad, Brent Stone, A. Irshad, Robin Erbacher, Dylan Teague, Antonio Russo, Zoltan Szillasi, R. Sharma, S. Martiradonna, Jared Sturdy, D. Pierluigi, Simone Calzaferri, A. De Iorio, N. Cavallo, Johny Jaramillo, Hassan Abdalla, L. Passamonti, Archana Sharma, Reyer Band, Paolo Vitulo, Awder Mohammed Ahmed, Agostino De Iorio, N. Lacalamita, A. Conde Garcia, Sunil Bansal, Christine Mclean, Pawan Kumar Netrakanti, G. De Lentdecker, G. Passeggio, M. Gola, Wren Vetens, Y. Ban, Supratik Mukhopadhyay, Carlos Avila, Stefano Bianco, Alessandro Braghieri, D. Y. Wang, S. Amarjeet, Inseok Yoon, F. Cassese, Salvatore Nuzzo, J. H. Kim, Evaldas Juska, I. Asghar, G. Rashevski, I. Yu, Vipin Bhatnagar, J. Yongho, Francesco Fabozzi, Mariana Shopova, Lisa Borgonovi, T. Hakkarainen, Camilla Galloni, Upul Sonnadara, Cristina Riccardi, Sven Dildick, Marcello Abbrescia, Plamen Iaydjiev, A. Gutierrez, Giovanni Mocellin, Tuure Tuuva, J. B. Singh, Unki Yang, A. Peck, M. Naimuddin, Kun Wang, Ilaria Vai, Mujahid Abbas, Federica Maria Simone, Rosamaria Venditti, Harphool Kumawat, H. Kaur, Marcello Maggi, Christos Roskas, Daniel Teyssier, Manisha Lohan, Michele Arturo Caponero, Y. Yang, Teruki Kamon, Davide Piccolo, Henri Petrow, Nadeesha Wickramage, S. Malhorta, P. Aspell, M. Franco, Anna Colaleo, Inkyu Park, Louis Moureaux, Z. Y. You, Stephen Butalla, Abbas M., Abbrescia M., Abdalla H., Abu Zeid S., Agapitos A., Ahmad A., Ahmed A., Ahmed W., Amarjeet S., Asghar I., Aspell P., Avila C., Babbar J., Ban Y., Band R., Bansal S., Benussi L., Bhatnagar V., Bianco M., Bianco S., Black K., Borgonovi L., Bouhali O., Braghieri A., Braibant S., Butalla S., Calzaferri S., Caponero M., Cassese F., Cavallo N., Chauhan S., Colafranceschi S., Colaleo A., Conde Garcia A., Dalchenko M., De Iorio A., De Lentdecker G., Dell Olio D., De Robertis G., Dharmaratna W., Dildick S., Dorney B., Erbacher R., Fabozzi F., Fallavollita F., Fiorina D., Fontanesi E., Franco M., Galloni C., Giacomelli P., Gilmore J., Gola M., Gruchala M., Gutierrez A., Hadjiiska R., Hakkarainen T., Hauser J., Hoepfner K., Hohlmann M., Hoorani H., Huang T., Iaydjiev P., Irshad A., Iorio A., Jaramillo J., Jeong D., Jha V., Juodagalvis A., Juska E., Kamon T., Karchin P., Kaur A., Kaur H., Keller H., Kim H., Kim J., Kumar A., Kumar S., Kumawat H., Lacalamita N., Lee J., Levin A., Li Q., Licciulli F., Lista L., Loddo F., Lohan M., Luhach M., Maggi M., Majumdar N., Malagalage K., Malhorta S., Martiradonna S., Mccoll N., McLean C., Merlin J., Mishra D., Mocellin G., Moureaux L., Muhammad A., Muhammad S., Mukhopadhyay S., Naimuddin M., Netrakanti P., Nuzzo S., Oliveira R., Pant L., Paolucci P., Park I., Passamonti L., Passeggio G., Peck A., Petre L., Petrow H., Piccolo D., Pierluigi D., Raffone G., Rahmani M., Ramirez F., Ranieri A., Rashevski G., Ressegotti M., Riccardi C., Rodozov M., Roskas C., Rossi B., Rout P., Ruiz J.D., Russo A., Safonov A., Saltzberg D., Saviano G., Shah A., Sharma A., Sharma R., Shopova M., Simone F., Singh J., Soldani E., Sonnadara U., Starling E., Stone B., Sturdy J., Sultanov G., Szillasi Z., Teague D., Teyssier D., Tuuva T., Tytgat M., Vai I., Vanegas N., Venditti R., Verwilligen P., Vetens W., Virdi A., Vitulo P., Wajid A., Wang D., Wang K., Wickramage N., Yang Y., Yang U., Yongho J., Yoon I., You Z., Yu I., and Zaleski S.
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, muon reconstruction, Physics::Instrumentation and Detectors, Phase (waves), FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Detectors and Experimental Techniques, Instrumentation, Compact Muon Solenoid, physics.ins-det, Physics, Muon, Large Hadron Collider, GEM, hep-ex, CMS, Detector, Settore FIS/01 - Fisica Sperimentale, Instrumentation and Detectors (physics.ins-det), Upgrade, High Luminosity LHC, Gas electron multiplier, Physics::Accelerator Physics, High Energy Physics::Experiment, GE1/1, high luminosity LHC, Particle Physics - Experiment, Voltage, HL-LHC
Abstract: The high-luminosity phase of the Large Hadron Collider (HL-LHC) will result in ten times higher particle background than measured during the first phase of LHC operation. In order to fully exploit the highly-demanding operating conditions during HL-LHC, the Compact Muon Solenoid (CMS) Collaboration will use Gas Electron Multiplier (GEM) detector technology. The technology will be integrated into the innermost region of the forward muon spectrometer of CMS as an additional muon station called GE11. The primary purpose of this auxiliary station is to help in muon reconstruction and to control level-1 muon trigger rates in the pseudo-rapidity region $1.6, Comment: 23 pages
Published: 2020

5. Excitation functions of the natCr(p,x)44Ti, 56Fe(p,x)44Ti, natNi(p,x)44Ti and 93Nb(p,x)44Ti reactions at energies up to 2.6 GeV

Author: Kenji Nishihara, Yu. E. Titarenko, K. V. Pavlov, Davide Mancusi, A. V. Ignatyuk, Harphool Kumawat, S. A. Balyuk, Jean-Christophe David, Y. Yariv, Sylvie Leray, A. Yu. Titarenko, V. F. Batyaev, A. Yu. Stankovskiy, Joseph Cugnon, M. V. Chauzova, Stepan G. Mashnik, V. M. Zhivun, Norihiro Matsuda, Alain Boudard, and P. V. Bebenin
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, 0103 physical sciences, Analytical chemistry, Irradiation, Nuclide, Atomic physics, 010306 general physics, 01 natural sciences, Instrumentation, Excitation
Abstract: The paper presents the measured cumulative yields of 44 Ti for nat Cr, 56 Fe, nat Ni and 93 Nb samples irradiated by protons at the energy range 0.04–2.6 GeV. The obtained excitation functions are compared with calculations of the well-known codes: ISABEL, Bertini, INCL4.2+ABLA, INCL4.5+ABLA07, PHITS, CASCADE07 and CEM03.02. The predictive power of these codes regarding the studied nuclides is analyzed.
Published: 2016

6. 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

7. 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

8. 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

9. Simulation and reconstruction of the PANDA Barrel DIRC

Author: G. Rosner, Michaela Thiel, J. Schwiening, D. Lehmann, A. Lehmann, Patrick Achenbach, M. Zühlsdorf, J. Rieke, V.Kh. Dodokhov, R. A. Montgomery, K. Go¨tzen, G. Kalicy, A. Britting, C. Schwarz, Ken Suzuki, M. Traxler, O. Merle, M. Hoek, W. Eyrich, L. Schmitt, K. Fo¨hl, Euan N. Cowie, Klaus Peters, Paul Alois Buhler, Harphool Kumawat, M. Cardinali, M. Patsyuk, B. Kro¨ck, F. Uhlig, R. Hohler, Johann Marton, L. Gruber, A. Hayrapetyan, G. Schepers, T. Keri, R. Dzhygadlo, A. Gerhardt, Michael Düren, W. Lauth, Concettina Sfienti, and B. Lewandowski
Subjects: Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Cherenkov detector, Detector, Barrel (horology), PID controller, Particle identification, law.invention, Nuclear physics, Detection of internally reflected Cherenkov light, law, Facility for Antiproton and Ion Research, High Energy Physics::Experiment, Nuclear Experiment, Instrumentation
Abstract: Hadronic particle identification (PID) in the barrel region of the PANDA experiment at the new Facility for Antiproton and Ion Research in Europe (FAIR) at GSI, Darmstadt will be provided by a DIRC (Detection of Internally Reflected Cherenkov light) counter. To optimize the performance and reduce the detector cost, detailed simulations of different design elements, such as the width of the radiators, the shape of the expansion volume, and the type of focusing system, were performed using Geant. Custom reconstruction algorithms were developed to match the detector geometry. We will discuss the single photon resolution and photon yield as well as the PID performance for the Barrel DIRC baseline design and several detector design options.
Published: 2014

10. 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

11. 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

12. 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

13. 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

14. Stochastic optimization of GeantV code by use of genetic algorithms

Author: Mihaly Novak, W. Pokorski, Gunter Folger, Soon Yung Jun, John Apostolakis, A. Gheata, I. Goulas, S. P. Behera, L Duhem, Alberto Ribon, O Shadura, G. Cosmo, D. Elvira, V. Ivantchenko, T Nikitina, Dmitri Konstantinov, Mihaela Gheata, G Lima, Farah Hariri, Marilena Bandieramonte, Sofia Vallecorsa, Harphool Kumawat, Federico Carminati, Rene Brun, Philippe Canal, R. Seghal, Sandro Christian Wenzel, and Guilherme Amadio
Subjects: History, Optimization problem, Meta-optimization, Estimation of distribution algorithm, Computer engineering, Probabilistic-based design optimization, Test functions for optimization, Stochastic optimization, Metaheuristic, Evolutionary computation, Computer Science Applications, Education, Computing and Computers
Abstract: GeantV is a complex system based on the interaction of different modules needed for detector simulation, which include transport of particles in fields, physics models simulating their interactions with matter and a geometrical modeler library for describing the detector and locating the particles and computing the path length to the current volume boundary. The GeantV project is recasting the classical simulation approach to get maximum benefit from SIMD/MIMD computational architectures and highly massive parallel systems. This involves finding the appropriate balance between several aspects influencing computational performance (floating-point performance, usage of off-chip memory bandwidth, specification of cache hierarchy, etc.) and handling a large number of program parameters that have to be optimized to achieve the best simulation throughput. This optimization task can be treated as a black-box optimization problem, which requires searching the optimum set of parameters using only point-wise function evaluations. The goal of this study is to provide a mechanism for optimizing complex systems (high energy physics particle transport simulations) with the help of genetic algorithms and evolution strategies as tuning procedures for massive parallel simulations. One of the described approaches is based on introducing a specific multivariate analysis operator that could be used in case of resource expensive or time consuming evaluations of fitness functions, in order to speed-up the convergence of the black-box optimization problem.
Published: 2017

15. Recent progress with the top to bottom approach to vectorization in GeantV

Author: John Apostolakis, Mihaly Novak, W. Pokorski, Ryan Schmitz, Philippe Canal, Dmitri Konstantinov, Patricia Mendez, I. Goulas, Vitaliy Drohan, Gulrukh Khattak, Przemislaw Karpinski, G. Cosmo, Harphool Kumawat, G Lima, Shruti Sharan, Sofia Vallecorsa, Rene Brun, Alberto Ribon, D. Elvira, Ananya, Raman Sehgal, Guilherme Amadio, Dmitry Savin, Marilena Bandieramonte, Aldo Miranda Aguillar, A. Bhattacharyya, Vladimir Ivanchenko, S. P. Behera, Federico Carminati, Andrei Gheata, Gheata Mi-haela, Kevin Pedro, Soon Yung Jun, Elena D. Orlova, Farah Hariri, O Shadura, Jesus Martinez Castro, Sandro Christian Wenzel, Katalin Nikolics, and K. Genser
Subjects: Source lines of code, Heuristic, Physics, QC1-999, Context (language use), Parallel computing, computer.software_genre, Computing and Computers, Data flow diagram, Code refactoring, Image tracing, Compiler, SIMD, computer
Abstract: SIMD acceleration can potentially boost by factors the application throughput. Achieving efficient SIMD vectorization for scalar code with complex data flow and branching logic, goes however way beyond breaking some loop dependencies and relying on the compiler. Since the refactoring effort scales with the number of lines of code, it is important to understand what kind of performance gains can be expected in such complex cases. We started to investigate a couple of years ago a top to bottom vectorization approach to particle transport simulation. Percolating vector data to algorithms was mandatory since not all the components can internally vectorize. Vectorizing low-level algorithms is certainly necessary, but not sufficient to achieve relevant SIMD gains. In addition, the overheads for maintaining the concurrent vector data flow and copy data have to be minimized. In the context of a vectorization R&D for simulation we developed a framework to allow different categories of scalar and vectorized components to co-exist, dealing with data flow management and real-time heuristic optimizations. The paper describes our approach on coordinating SIMD vectorization at framework level, making a detailed quantitative analysis of the SIMD gain versus overheads, with a breakdown by components in terms of geometry, physics and magnetic field propagation. We also present the more general context of this R&D work and goals for 2018.
Published: 2019

16. J-PARC E27 Experiment to Search for a Nuclear Kaon Bound State K-pp

Author: Hitoshi Sugimura, Seongbae Yang, R. Kiuchi, Kenichi Imai, Atsushi Sakaguchi, T. O. Yamamoto, C. Joo, S. Ishimoto, Megumi Naruki, M. Moritsu, Hiroyuki Fujioka, Shunsuke Kanatsuki, K. Hosomi, Hiroyuki Ekawa, V. Samoilov, Toshio Takahashi, Alessandro Feliciello, Mifuyu Ukai, Ryosuke Ota, Harphool Kumawat, Toshiyuki Tanaka, Shoichi Hasegawa, S. Bufalino, Kiyoshi Tanida, Shuhei Hayakawa, K. Shirotori, M. Niiyama, Koji Miwa, Takeshi Koike, Susumu Sato, Petr Evtoukhovitch, Y. Nozawa, T. Takahashi, Yudai Ichikawa, B. J. Roy, Hirokazu Tamura, Z. Tsamalaidze, S. Y. Suzuki, Tomofumi Nagae, Hiroyuki Sako, Y. Matsumoto, A. O. Tokiyasu, Ryotaro Honda, and H. C. Bhang
Subjects: Nuclear physics, Nuclear reaction, Physics, Particle decay, Pion, Meson, Bound state, Binding energy, Hyperon, Nucleon, Atomic and Molecular Physics, and Optics
Abstract: In the J-PARC E27 experiment, we search for a K − pp bound state via the d(π +, K +) reaction at 1.7 GeV/c at the K1.8 beam line. The binding energy and decay width of the K − pp bound state can be obtained in the missing mass measurement with a good energy resolution of 2 MeV/c 2. A range counter array (RCA) was constructed to detect the two high-momentum protons from the K − pp decay and to reduce the background such as quasi-free hyperon production. Recently, we have carried out a pilot run in June, 2012. The d(π +, K +) missing-mass spectrum has been obtained for the first time. In this report, an overview of the E27 experiment and a preliminary result on this pilot run are presented.
Published: 2013

17. The Barrel TOF detector for P̅ANDA

Author: H. Orth, L. Schmitt, K. Dutta, C. Schwarz, Klaus Götzen, L. Gruber, Dominik Steinschaden, Bidyut J Roy, Ken Suzuki, K. Kalita, Concettina Sfienti, Merlin Böhm, M. Hoek, C Sonika, Johann Marton, Arpitkumar Parmar, M. Cardinali, Harphool Kumawat, Michaela Thiel, A. Lehmann, and W. Lauth
Subjects: Physics, Optics, business.industry, Detector, Barrel (horology), business
Published: 2016

18. Measurement and simulation of the cross sections for nuclide production in 93Nb and natNi targets irradiated with 0.04- to 2.6-GeV protons

Author: Davide Mancusi, Stepan G. Mashnik, K. V. Pavlov, Waclaw Gudowski, Harphool Kumawat, Vyacheslav F. Batyaev, Joseph Cugnon, Norihiro Matsuda, S. N. Florya, G. Mank, Yu. E. Titarenko, V. M. Zhivun, A. Boudard, S. Leray, A. Yu. Titarenko, K. Nishihara, A. V. Ignatyuk, R. S. Tikhonov, M. A. Butko, and Y. Yariv
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Radiochemistry, Nuclide, Irradiation, Mass spectrometry, Atomic and Molecular Physics, and Optics, Line (formation)
Abstract: The cross sections for nuclide production in thin 93Nb and natNi targets irradiated by 0.04- to 2.6-GeV protons have been measured by direct γ spectrometry using two γ spectrometers with the resolutions of 1.8 and 1.7 keV in the 60Co 1332-keV γ line. As a result, 1112 yields of radioactive residual nuclei have been obtained. The 27Al(p, x)22Na reaction has been used as a monitor reaction. The experimental data have been compared with the MCNPX (BERTINI, ISABEL), CEM03.02, INCL4.2, INCL4.5, PHITS, and CASCADE07 calculations.
Published: 2011

19. Measurement and simulation of the cross sections for the production of 148Gd in thin natW and 181Ta targets irradiated with 0.4- to 2.6-GeV protons

Author: Harphool Kumawat, K. Nishihara, S. N. Florya, Joseph Cugnon, R. S. Tikhonov, M. A. Butko, Yu. E. Titarenko, A. Yu. Titarenko, K. V. Pavlov, S. Leray, Waclaw Gudowski, Stepan G. Mashnik, Davide Mancusi, A. V. Ignatyuk, Vyacheslav F. Batyaev, Norihiro Matsuda, G. Mank, V. M. Zhivun, A. Boudard, and Y. Yariv
Subjects: Physics, Nuclear physics, Nuclear reaction, Excitation function, Nuclear and High Energy Physics, Atomic nucleus, Alpha-particle spectroscopy, Gamma spectroscopy, Irradiation, Atomic physics, Proton energy, Spectroscopy, Atomic and Molecular Physics, and Optics
Abstract: The cross sections for the production of Gd-148 in W-nat and Ta-181 targets irradiated by 0.4-, 0.6-, 0.8-, 1.2-, 1.6-, and 2.6-GeV protons at the ITEP accelerator complex have been measured by dir ...
Published: 2011

20. Measurement and simulation of the cross sections for nuclide production in 56Fe and natCr targets irradiated with 0.04- to 2.6-GeV protons

Author: Yu. E. Titarenko, Harphool Kumawat, Davide Mancusi, A. V. Ignatyuk, Joseph Cugnon, Y. Yariv, Vyacheslav F. Batyaev, R. S. Tikhonov, M. A. Butko, Norihiro Matsuda, G. Mank, V. M. Zhivun, A. Boudard, S. N. Florya, Stepan G. Mashnik, K. V. Pavlov, K. Nishihara, S. Leray, Waclaw Gudowski, and A. Yu. Titarenko
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Spectrometer, Atomic nucleus, Gamma spectroscopy, Nuclide, Irradiation, Cobalt-60, Mass spectrometry, Atomic and Molecular Physics, and Optics, Spallation Neutron Source
Abstract: The cross sections for nuclide production in thin 56Fe and natCr targets irradiated by 0.04–2.6-GeV protons are measured by direct γ spectrometry using two γ spectrometers with the resolutions of 1.8 and 1.7 keV for the 60Co 1332-keV γ line. As a result, 649 yields of radioactive residual product nuclei have been obtained. The 27Al(p, x)22Na reaction has been used as a monitor reaction. The experimental data are compared with the MCNPX (BERTINI, ISABEL), CEM03.02, INCL4.2, INCL4.5, PHITS, and CASCADE07 calculations.
Published: 2011

21. GeantV alpha release

Author: John Apostolakis, Mihaela Gheata, Marilena Bandieramonte, P. Karpinski, P. Mendez Lorenzo, Gulrukh Khattak, Elena D. Orlova, Farah Hariri, Alberto Ribon, Mihaly Novak, G Lima, V. Ivantchenko, Sofia Vallecorsa, G. Cosmo, Federico Carminati, A. Bhattacharyya, Harphool Kumawat, Raman Sehgal, Philippe Canal, Dmitri Konstantinov, Rene Brun, Ananya, W. Pokorski, J. Martínez-Castro, O Shadura, D. Elvira, Guilherme Amadio, S. P. Behera, Soon Yung Jun, Shruti Sharan, I. Goulas, L Duhem, A. Miranda-Aguilar, Andrei Gheata, V. Drogan, Katalin Nikolics, Sandro Christian Wenzel, K. Genser, and R. Schmitz
Subjects: History, Computer science, Radiochemistry, Alpha (ethology), Computing and Computers, Computer Science Applications, Education
Abstract: In the fall 2016, GeantV went through a thorough community evaluation of the project status and of its strategy for sharing the R&D; results with the LHC experiments and with the HEP simulation community in general. Following this discussion, GeantV has engaged onto an ambitious 2-year road-path aiming to deliver a beta version that has most of the final design and several performance features of the final product, partially integrated with some of the experiment’s frameworks. The initial GeantV prototype has been updated to a vector-aware concurrent framework, which is able to deliver high-density floating-point computations for most of the performance-critical components such as propagation in field and physics models. Electromagnetic physics models were adapted for the specific GeantV requirements, aiming for the full demonstration of shower physics performance in the alpha release at the end of 2017. We have revisited and formalized GeantV user interfaces and helper protocols, allowing to: connect to user code, provide recipes to access efficiently MC truth and generate user data in a concurrent environment.
Published: 2018

22. Role of Breakup Channel in Nuclear Reactions induced by Weakly Bound Projectiles

Author: Harphool Kumawat, V. V. Parkar, Vivekanand Jha, and S. Kailas
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Projectile, Nanotechnology, Channel (broadcasting), Atomic physics, Breakup
Abstract: The role of breakup channel in nuclear reactions induced by weakly bound stable projectiles ( 6,7 Li and 9 Be) is brought out through studies on 7 Li+ 165 Ho, 7 Li, 9 Be+ 208 Pb and 6 Li+ 90 Zr systems.
Published: 2010

23. Validation of CASCADE code using the monitor reactions

Author: V. Kumar, Harphool Kumawat, Chitra Bhatia, and J. Adam
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Range (particle radiation), Deuterium, Proton, Cascade, Neutron flux, Nuclear Theory, Hadron, Nuclear fusion, Neutron, Nuclear Experiment
Abstract: Production cross-sections of monitor reaction 27Al(x, y)24Na for proton, neutron and deuteron projectiles have been estimated from the CASCADE code from tens of MeV/n to tens of GeV/n energy and compared them with the available experimental data. It has also been shown that using the CASCADE code production cross-section of 27Al(d, y2)24Na reaction can be obtained from the proton and neutron projectiles. Implicitly, this provides an alternative way of knowing production cross-section of 27Al(n, y 1)24Na reaction which may be used to monitor the neutron flux in a wide range of energy. However, in the paper need of experimental determination of cross-sections for neutron projectile has been stressed. Similarly, cross-section of other monitor reactions like 27Al(p, y ′)22Na and 27Al(n, y ′ 1)22Na are also calibrated as function of energy up to several GeV.
Published: 2009

24. Extension of CASCADE.04 to estimate neutron fluence and dose rates and its validation

Author: Harphool Kumawat, V. Kumar, and P. Srinivasan
Subjects: Physics, Neutron dose, Neutron flux, Cascade, Monte Carlo method, General Physics and Astronomy, Estimator, Extension (predicate logic), Collision, Dose rate, Computational physics
Abstract: Capability to compute neutron dose rate is introduced for the first time in the new version of the CASCADE.04 code. Two different methods, ‘track length estimator’ and ‘collision estimator’ are adapted for the estimation of neutron fluence rate needed to calculate the ambient dose rate. For the validation of the methods, neutron dose rates are experimentally measured at different locations of a 5Ci Am-Be source, shielded in Howitzer-type system and these results are compared with those estimated using (i) modified CASCADE.04.d and (ii) MCNP4A codes and it is found that the agreement is good. The paper presents details of modification and results of the comparative study.
Published: 2009

25. Heat deposition in thick targets due to interaction of high energy protons and thermal hydraulics analysis

Author: P. Satyamurthy, Vishveshwar R. Mantha, Dhanadeep Dutta, S. Kailas, Harphool Kumawat, Ajit Kumar Mohanty, and R.K. Choudhury
Subjects: Thermal hydraulics, Nuclear reaction, Nuclear physics, Nuclear and High Energy Physics, Proton, Lead-bismuth eutectic, Chemistry, Monte Carlo method, Spallation, Neutron, Nuclear Experiment, Instrumentation, Beam (structure)
Abstract: Heat deposition inside thick targets due to interaction of high energy protons ( E p ∼ GeV) has been estimated using an improved version of the Monte Carlo simulation code CASCADE.04.h. The results are compared with the available experimental data for thick targets of Be, Al, Fe, Cu, Pb and Bi at proton energies of 0.8 GeV, 1.0 GeV and 1.2 GeV. A more continuous heat deposition approach which has been adopted in CASCADE.04.h yields results which are in better agreement with the experimental data as compared to the ones from the earlier version of CASCADE.04. The results are also compared with the predictions of the FLUKA Monte Carlo code. Both CASCADE.04.h and FLUKA predictions are nearly similar for heavy targets and both agree with the experimental measurements. However, they do have differences in predictions for lighter targets where measurements also differ from the predictions. It is observed that the maximum heat loss in thick targets occurs at the beginning of the target due to increasing nuclear reaction contributions. This aspect is crucial in designing the window of a spallation neutron target employed in an accelerator driven sub-critical system (ADS) as this is the first material to be traversed by the proton beam and is subjected to the maximum temperature gradient. Optimization of the target-window parameters requires a careful estimation of heat deposition in the window region and this has been demonstrated through thermal hydraulic studies related to the design of a realistic lead bismuth eutectic (LBE) spallation neutron target for an ADS system.
Published: 2008

26. Role of (n, xn) reactions in ADS, IAEA-benchmark and the Dubna Cascade Code

Author: Harphool Kumawat, Manish Sharma, and V. Kumar
Subjects: Physics, Nuclear physics, Proton, Cascade, Yield (chemistry), Monte Carlo method, Benchmark (computing), General Physics and Astronomy, Neutron, Beam (structure), Spectral line
Abstract: Dubna Cascade Code (version-2004) has been used for the Monte Carlo simulation of the 1500 MWt accelerator driven sub-critical system (ADS) with 233U + 232Th fuel using the IAEA benchmark. Neutron spectrum, cross-section of (n, xn) reactions, isotopic yield, heat spectra etc. are simulated. Many of these results that help in understanding the IAEA benchmark are presented. It is revealed that the code predicts the proton beam current required for the 1500 MWt ADS for Keff = 0.98 to be 11.6 mA. Radial distribution of heat is fairly in agreement with other codes like the EA-MC and it needs nearly 1% less enrichment than given by other codes. This may be because the code takes care of the role of larger order of the (n, xn) reactions. It is emphasized that there is a strong need to study (n, xn) reactions both theoretically and experimentally for better design.
Published: 2007

27. Transmutation of 129I, 237Np, 238Pu, 239Pu, and 241Am using neutrons produced in target-blanket system ‘Energy plus Transmutation’ by relativistic protons

Author: S. G. Stetsenko, M.I. Krivopustov, W. Westmeier, V. I. Stegailov, V. G. Kalinnikov, Harphool Kumawat, V. M. Tsoupko-Sitnikov, A. R. Balabekyan, A. A. Solnyshkin, Karel Katovsky, and J. Adam
Subjects: Nuclear physics, Nuclotron, Materials science, chemistry, Nuclear transmutation, Proton, Neptunium, General Physics and Astronomy, chemistry.chemical_element, Neutron, Americium, Spallation, Blanket
Abstract: Target-blanket facility ‘Energy + Transmutation’ was irradiated by proton beam extracted from the Nuclotron Accelerator in Laboratory of High Energies of Joint Institute for Nuclear Research in Dubna, Russia. Neutrons generated by the spallation reactions of 0.7, 1.0, 1.5 and 2 GeV protons and lead target interact with subcritical uranium blanket. In the neutron field outside the blanket, radioactive iodine, neptunium, plutonium and americium samples were irradiated and transmutation reaction yields (residual nuclei production yields) have been determined using γ-spectroscopy. Neutron field's energy distribution has also been studied using a set of threshold detectors. Results of transmutation studies of 129I, 237Np, 238Pu, 239Pu and 241Am are presented.
Published: 2007

28. Measurement of neutron-induced activation cross-sections using spallation source at JINR and neutronic validation of the Dubna code

Author: Shiv K. Gupta, V. M. Tsoupko-Sitnikov, H. Westmeier, N. Vladimirova, Manish Sharma, H. S. Palsania, S. Kailas, S. Golovatiouk, Harphool Kumawat, Vitaly Pronskikh, W. Westmeier, V. S. Barashenkov, S. Ganesan, M.I. Krivopustov, J. Adam, and V. Kumar
Subjects: Nuclear physics, Physics, Neutron transport, Nuclotron, Proton, Neutron flux, General Physics and Astronomy, Spallation, Neutron, Irradiation, Beam (structure)
Abstract: A beam of 1 GeV proton coming from Dubna Nuclotron colliding with a lead target surrounded by 6 cm paraffin produces spallation neutrons. A Th-foil was kept on lead target (neutron spallation source) in a direct stream of neutrons for activation and other samples of 197Au, 209Bi, 59Co, 115In and 181Ta were irradiated by moderated beam of neutrons passing through 6 cm paraffin moderator. The gamma spectra of irradiated samples were analyzed using gamma spectrometry and DEIMOS software to measure the neutron cross-section. For this purpose neutron fluence at the positions of samples is also estimated using PREPRO software. The results of cross-sections for reactions 232Th(n, γ), 232Th(n, 2n), 197Au(n, γ), 197Au(n, α), 197Au(n, xn), 59Co(n, α), 59Co(n, xn), 181Ta(n, γ) and 181Ta(n, xn) are given in this paper. Neutronics validation of the Dubna Cascade Code is also done using cross-section data by other experiments.
Published: 2007

29. J-PARC E27 Experiment to Search for a K−pp Bound State

Author: Y. Nozawa, Y. Matsumoto, Hiroyuki Sako, Koji Miwa, Hiroyuki Ekawa, Petr Evtoukhovitch, Atsushi Sakaguchi, T. O. Yamamoto, A. O. Tokiyasu, R. Kiuchi, Hiroyuki Fujioka, S. Ishimoto, Seongbae Yang, Ryotaro Honda, B. J. Roy, Shoji Suzuki, M. Naruki, K. Tanida, Manabu Moritsu, Alessandro Feliciello, Shuhei Hayakawa, Hyoungchan Bhang, Kenichi Imai, V. Samoilov, Yudai Ichikawa, Susumu Sato, Hirokazu Tamura, Ryosuke Ota, Tomofumi Nagae, Kotaro Shirotori, Shunsuke Kanatsuki, Toshiyuki Takahashi, Z. Tsamalaidze, Harphool Kumawat, Shoichi Hasegawa, Takeshi Koike, Mifuyu Ukai, Stefania Bufalino, T. Takahashi, Masayuki Niiyama, Kenji Hosomi, Hitoshi Sugimura, C. Joo, and Toshiyuki Tanaka
Subjects: Nuclear physics, Nuclear reaction, Physics, Pion, Meson, Isospin, Hadron, Binding energy, Bound state, Atomic physics, Nucleon
Abstract: An antikaon and a nucleus may form a bound state (a kaonic nucleus), due to the strong attraction of K bar -N in I=0. A K − pp bound state, which is the bound state of an antikaon and two nucleons, with the total charge +1 and the isospin 1/2, is expected to be the simplest kaonic nucleus. Various theoretical calculations for a K − pp bound state have been carried out and the existence of the bound state is supported in these calculations. However, the binding energy and the decay width depend on the K bar -N interactions and the calculation methods [1]. Several experiments have been performed to look for a signal of kaonic nuclei [2,3]. However, any firm experimental evidence has not been found. An experimental search for the K − pp bound state is performed by using the d(π + , K + ) reaction at J-PARC K1.8 beam line (J-PARC E27experiment). Fig.1 shows the experimental setup of this experiment. The first data taking as a pilot run was carried out in June, 2012. The missing-mass spectrum of this reaction studied at the beam momentum of 1.7 GeV/c, which allows the production of Λ(1405), was obtained for the first time and a significant peak shift by ~30 MeV was observed in the Y* region. In a preliminary proton-coincidence analysis, a sharp spike due to the ΣN-ΛN coupling and a broad enhancement around 2.3 GeV/c 2 , which might be attributed to the K − pp bound state, was clearly observed. At this symposium, the preliminary results of the inclusive and coincidence analysis will be discussed.
Published: 2015

30. Multinucleon transfer study inPb206(O18,x)at energies above the Coulomb barrier

Author: Kazuyuki Sekizawa, S. K. Pandit, A. Pal, U. K. Pal, Harphool Kumawat, A. Parmar, K. Mahata, S. Santra, V. V. Parkar, Vivekanand Jha, K. Ramachandran, Sonika, Ajit Kumar Mohanty, and B. J. Roy
Subjects: Physics, Nuclear and High Energy Physics, Transfer (group theory), Crystallography, Angular distribution, Transfer mode, Coulomb barrier, Production (computer science), Kinetic energy, Energy (signal processing)
Abstract: Single- and multi-nucleon transfer reactions, namely, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{20}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{19}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{17}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{16}\mathrm{O})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{18}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{17}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{16}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{15}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{14}\mathrm{N})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{16}\mathrm{C})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{15}\mathrm{C})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{14}\mathrm{C})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{13}\mathrm{C})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{12}\mathrm{C})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{12}\mathrm{B})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{11}\mathrm{B})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{10}\mathrm{B})$, $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{10}\mathrm{Be})$, and $^{206}\mathrm{Pb}(^{18}\mathrm{O},^{9}\mathrm{Be})$, have been studied at an incident $^{18}\mathrm{O}$ energy of 139 MeV. The total kinetic energy loss (TKEL) spectrum and angular distribution of reaction products have been measured. The $Q$ value and angle integrated cross sections are deduced. Angular distributions for the elastically scattered $^{18}\mathrm{O}$ particles are also measured. Fully microscopic time-dependent Hartree-Fock (TDHF) calculations, based on the independent single-nucleon transfer mode, have been carried out and are compared with experimental data of multinucleon transfer reactions. The TDHF calculations provide reasonable agreement with the experimental data for cases where one- and two-nucleon transfer is involved; the discrepancy is large for multinucleon transfer reactions. The effect of particle evaporation on the production cross sections has been studied. Inclusion of particle evaporation effects, though improving the results, could not reproduce the measured cross sections. Possible origins of these discrepancies are discussed.
Published: 2015

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. Development of the Monte Carlo model CASCADE-2004 of high-energy nuclear interactions

Author: Harphool Kumawat and V. S. Barashenkov
Subjects: Physics, Nuclear reaction, Nuclear physics, Nuclear and High Energy Physics, Cascade, Nuclear Theory, Monte Carlo method, Hadron, Nuclear fusion, Neutron, Nuclear Experiment, Nuclear matter, Spontaneous fission
Abstract: The Monte Carlo code CASCADE for the calculation of inelastic hadron- and nucleus-nucleus interactions at energies from several tens of MeV up to several tens of GeV and for modelling of nuclear-physical processes accompanying the transport of particles and nuclei in matter is improved by considering a more detailed model of decay of highly excited residual (after-intranuclear-cascade) nuclei. Results of calculations are in good agreement with experiment. However, there are some deviations for light-isotope production, which prompt the necessity of developing more correct models of evaporation and strong asymmetric high-energy fission.
Published: 2005

33. Measurement of the neutron fluence on the spallation source at Dubna

Author: S. Ganesan, Manish Sharma, W. Westmeier, V. S. Barashenkov, Shiv K. Gupta, H. Westmeier, N. Vladimirova, Vitaly Pronskikh, J. Adam, H. S. Palsania, V. M. Tsoupko-Sitnikov, M.I. Krivopustov, V. Kumar, Harphool Kumawat, S. Kailas, and S. Golovatiouk
Subjects: Physics, Nuclear and High Energy Physics, Radiation, Proton, Fluence, Nuclear physics, Nuclear Energy and Engineering, Cascade, Neutron flux, Neutron source, General Materials Science, Spallation, Neutron, Irradiation, Safety, Risk, Reliability and Quality
Abstract: A 232Th activation sample was exposed directly to the spallation neutrons produced by 1GeV proton colliding with a lead target and other samples of 197Au, 209Bi, 59Co, 115In and 181Ta were irradiated by moderated neutrons after passing through 6 cm of paraffin. Different (n, γ) and (n, xn) reaction products in 232Th, 197Au and 209Bi samples are analyzed by gamma-ray spectrometry to measure the neutron fluence at the positions of the samples. For this purpose a histogram of ‘flat’ spectrum averaged neutron cross-sections in over thirty given energy groups was determined from the PREPRO-2000 software. Results of measurements are compared with Monte-Carlo simulations by the Dubna CASCADE code. Experimental values for both spallation and moderated neutron fluences are in reasonable agreement with the CASCADE code. Thus, the experimentally measured fluence of moderated neutrons was used to infer the ‘one group’ reaction cross-sections of 209Bi (n, xn) reactions for x = 6 to 9.
Published: 2005

34. Double-differential cross sections for the production of neutrons from Pb, W, Zr, Cu, and Al targets irradiated with 0.8-, 1.0-, and 1.6-GeV protons

Author: G. N. Smirnov, S. V. Mulambetova, Stepan G. Mashnik, R. D. Mulambetov, V. S. Barashenkov, Yu. V. Trebukhovsky, Vyacheslav F. Batyaev, A. B. Koldobsky, Yu. E. Titarenko, K. A. Lipatov, V. M. Zhivun, Harphool Kumawat, and Richard E. Prael
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Proton, Physics::Instrumentation and Detectors, Liquid scintillation counting, Scintillator, Atomic and Molecular Physics, and Optics, Synchrotron, law.invention, Nuclear physics, Experimental physics, law, Neutron source, High Energy Physics::Experiment, Neutron, Nuclear Experiment
Abstract: Experimental results obtained by determining the double-differential cross sections for neutron production in Pb, W, Zr, Cu, and Al targets irradiated with 0.8-, 1.0-, and 1.6-GeV protons are presented. The spectra of neutrons were measured at 15°, 30°, 60°, 90°, 120°, and 150° with a time-of-flight spectrometer by using a proton beam extracted from the 10-GeV synchrotron at the Institute of Theoretical and Experimental Physics (ITEP, Moscow). The neutrons are recorded with 5MAB-1F6BC501A/5L liquid scintillation detectors and NE110 solid-state scintillators. The experimental data in question are compared with the results of simulations based on the CEM97, LAHET, and CASCADE codes.
Published: 2005

35. Spallation neutron spectrum on a massive lead/paraffin target irradiated with 1 GeV protons

Author: V. Kumar, V. M. Golovatiouk, Karel Katovsky, Harphool Kumawat, A. R. Balabekyan, A. A. Solnyshkin, R. Brandt, V. I. Stegailov, Vitaly Pronskikh, V. G. Kalinnikov, V. M. Tsoupko-Sitnikov, W. Westmeier, J. Adam, V. S. Barashenkov, Reinhard Odoj, and M.I. Krivopustov
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Nuclotron, Proton, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Nuclear physics, Physics::Accelerator Physics, Nuclear fusion, Neutron, Spallation, Nuclear Experiment, Nucleon, Waste disposal
Abstract: The gamma-ray spectra emitted by decaying of residual nuclei produced by spallation neutrons in (n, xn), (n, xnyp), (n, p), (n, γ) reactions with activation threshold detectors, i.e. 209Bi, 197Au, 59Co, 115In, 232Th, were measured in the Laboratory of Nuclear Problems (LNP), JINR, Dubna, Russia. Spallation neutrons were generated by bombarding a 20 cm long cylindrical lead target with 8 cm diameter surrounded by a 6 cm thick layer of paraffin moderator with 1 GeV proton beam from the NUCLOTRON accelerator. Reaction rates and a spallation neutron spectrum were measured and compared with CASCADE code calculations.
Published: 2004

36. Mathematical model of the electronuclear set-up on the beam of JINR synchrotron

Author: V. Kumar, Harphool Kumawat, V.A Lobanova, and V. S. Barashenkov
Subjects: Physics, Nuclear and High Energy Physics, Nuclear transmutation, Monte Carlo method, Synchrotron, law.invention, Nuclear physics, Neutron capture, law, Cascade, Physics::Accelerator Physics, Neutron source, Spallation, Nuclear Experiment, Instrumentation, Beam (structure)
Abstract: On the basis of the Monte Carlo code CASCADE, developed at JINR, a mathematical model of the deep-subcritical set-up with the uranium blanket used in experiments underway at JINR using a 0.6–4 GeV proton beam, is created. The neutron spectra, yields and energies of generated particles are calculated and compared for several modifications of the set-up. The influence of paraffin and graphite moderators on the characteristics of the particles escaping the lead target is studied. The modelled set-up can be considered as a first step of the experiments to be designed at JINR U–Pu accelerator driven subcritical systems–subcritical assembly at Dubna (ADS–SAD) with a heat power of several tens of kW.
Published: 2004

37. Neutron spallation source and the Dubna Cascade Code

Author: V. S. Barashenkov, Uttam Goel, V. Kumar, and Harphool Kumawat
Subjects: Physics, Proton, Nuclear Theory, General Physics and Astronomy, Collision, Nuclear physics, Cascade, Yield (chemistry), Code (cryptography), Physics::Accelerator Physics, Neutron, Spallation, Nuclear Experiment, Beam (structure)
Abstract: Neutron multiplicity per incident proton,n/p, in collision of high energy proton beam with voluminous Pb and W targets has been estimated from the Dubna Cascade Code and compared with the available experimental data for the purpose of benchmarking of the code. Contributions of various atomic and nuclear processes for heat production and isotopic yield of secondary nuclei are also estimated to assess the heat and radioactivity conditions of the targets. Results obtained from the code show excellent agreement with the experimental data at beam energy,E < 12 GeV and differ maximum up to 25% at higher energy
Published: 2003

38. Verification of Electromagnetic Physics Models for Parallel Computing Architectures in the GeantV Project

Author: Rene Brun, Sofia Vallecorsa, I. Goulas, L Duhem, Mihaly Novak, Philippe Canal, S. P. Behera, Soon Yung Jun, Dmitri Konstantinov, T Nikitina, W. Pokorski, Mihaela Gheata, Gunter Folger, John Apostolakis, Farah Hariri, A. Gheata, Marilena Bandieramonte, Federico Carminati, Guilherme Amadio, G Lima, R. Seghal, D. Elvira, Ivantchenko, O Shadura, G. Cosmo, Alberto Ribon, Sandro Christian Wenzel, and Harphool Kumawat
Subjects: History, Computer architecture, Computer science, Computing and Computers, Computer Science Applications, Education, Computational science
Abstract: An intensive R&D; and programming effort is required to accomplish new challenges posed by future experimental high-energy particle physics (HEP) programs. The GeantV project aims to narrow the gap between the performance of the existing HEP detector simulation software and the ideal performance achievable, exploiting latest advances in computing technology. The project has developed a particle detector simulation prototype capable of transporting in parallel particles in complex geometries exploiting instruction level microparallelism (SIMD and SIMT), task-level parallelism (multithreading) and high-level parallelism (MPI), leveraging both the multi-core and the many-core opportunities. We present preliminary verification results concerning the electromagnetic (EM) physics models developed for parallel computing architectures within the GeantV project. In order to exploit the potential of vectorization and accelerators and to make the physics model effectively parallelizable, advanced sampling techniques have been implemented and tested. In this paper we introduce a set of automated statistical tests in order to verify the vectorized models by checking their consistency with the corresponding Geant4 models and to validate them against experimental data.
Published: 2017

39. 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

40. Fusion reaction studies for the6Li+90Zr system at near-barrier energies

Author: C. S. Palshetkar, Ajit Kumar Mohanty, S.K. Pandit, S. Kailas, R. Palit, Sushil K. Sharma, P. K. Rath, Vivekanand Jha, Harphool Kumawat, A. Chatterjee, B. J. Roy, Shital Thakur, and V. V. Parkar
Subjects: Physics, Nuclear and High Energy Physics, Fusion, Nuclear fusion, Atomic physics, Breakup, Spectroscopy
Abstract: Complete fusion cross sections have been measured using the off-line $\ensuremath{\gamma}$-ray spectroscopy method for the ${}^{6}$Li+${}^{90}$Zr system around barrier energies. Statistical and coupled-channel calculations have been performed to investigate the effect of coupling on complete fusion. It is observed that the complete fusion is suppressed by 34 $\ifmmode\pm\else\textpm\fi{}$ 8$%$ compared to the coupled channel predictions. The effect of breakup coupling is estimated using the continuum discretized coupled channels (CDCC) method and it is found to reduce the complete fusion probability. Contrary to earlier predictions, a universal behavior of complete fusion suppression factor for the ${}^{6}$Li projectile with target charge is observed.
Published: 2012

41. Verification of high-energy transport codes on the basis of activation data

Author: Davide Mancusi, S. N. Florya, Norihiro Matsuda, S. Leray, G. Mank, J-C David, Stepan G. Mashnik, Yu. E. Titarenko, K. V. Pavlov, Y. Yariv, R. S. Tikhonov, M. A. Butko, Vyacheslav F. Batyaev, Waclaw Gudowski, K. Nishihara, A. V. Ignatyuk, A. Yu. Titarenko, D. V. Dikarev, V. M. Zhivun, A. Boudard, Harphool Kumawat, and Joseph Cugnon
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, High energy, Basis (linear algebra), Nuclear Theory, Experimental data, FOS: Physical sciences, Model parameters, Nuclear physics, Nuclear facilities, Cascade, Electromagnetic shielding, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Nuclide production cross sections measured at ITEP for the targets of nat-Cr, 56-Fe, nat-Ni, 93-Nb, 181-Ta, nat-W, nat-Pb, 209-Bi irradiated by protons with energies from 40 to 2600 MeV were used to estimate the predictive accuracy of several popular high-energy transport codes. A general agreement of the ITEP data with the data obtained by other groups, including the numerous GSI data measured by the inverse kinematics method was found. Simulations of the measured data were performed with the MCNPX (Bertini and ISABEL options), CEM03.02, INCL4.2+ABLA, INCL4.5+ABLA07, PHITS, and CASCADE.07 codes. Deviation factors between the calculated and experimental cross sections have been estimated for each target and for the whole energy range covered by our measurements. Two-dimensional diagrams of deviation factor values were produced for estimating the predictive power of every code for intermediate, not measured masses of nuclei-targets and bombarding energies of protons. Further improvements of all tested here codes are recommended. In addition, new measurements at ITEP of nuclide yields from a 208-Pb target irradiated by 500 MeV protons are presented. A good agreement between these new data and the GSI measurements obtained by the inverse kinematics method was found, 31 pages, 18 figures, 6 tables, only pdf, LANL Report LA-UR-11-02704, Los Alamos (2011), submitted to Phys. Rev. C
Published: 2011

42. Inclusiveα-production cross section for theLi6+Zr90system at energies near the fusion barrier

Author: S. Kailas, Ajit Kumar Mohanty, Lalit Mohan Pant, Harphool Kumawat, V. V. Parkar, Vivekanand Jha, Swadeshmukul Santra, R. K. Choudhury, Dipanwita Dutta, Prashant Shukla, V. Kumar, and B. J. Roy
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Cross section (physics), Isotope, Stable isotope ratio, Isotopes of lithium, Production (computer science), Born approximation, Atomic physics, Breakup
Abstract: Inclusive (direct+compound) alpha production for the {sup 6}Li+{sup 90}Zr system is measured at near barrier energies, namely, 15,17,19,21,25, and 30 MeV. The data are treated in the statistical model and distorted-wave Born approximation framework to disentangle the degree of competition between direct and compound reaction channels. A substantial contribution from the compound reaction channels is obtained but the direct reaction channels are found to be the dominant mechanism for alpha production at these energies. Estimation of the breakup and transfer reaction around the barrier shows that the latter is the dominant channel. Universal behavior of the alpha-production cross section is observed over a large range of target nuclei.
Published: 2010

43. Study of deep subcritical electronuclear systems and feasibility of their application for energy production and radioactive waste transmutation

Author: Jindrich. Adam, Baldin, Anton Alexandrovich, N. Vladimirova, N. A. Gundorin, B. Guskov, V. Dyachenko, A.F. Elishev, M. Kadykov, E. Kostyuhov, V. Kransov, I. Marin, V. S. Pronskikh, Rogov, Anatoly, A. A. Solnyshkin, V. I. Stegailov, S. G. Stetsenko, S. Tyutyunikov, Furman, Walter, Tsoupko-Sitnikov, Vsevolod Mikhailovich, E. M. Belov, M. Galanin, V. Kolesnikov, N. Ryazansky, S. Solodchenkova, B. Fonarev, V. Chilap, A. Chinenov, Baldina, Elina, A. Balabekyan, Karapetyan, Gayane, I. Zhuk, S. V. Korneev, A.S. Potapenko, A. Safronova, V. N. Sorokin, V. V. Sorokin, A.M. Khilmanovich, B. Marcynkevich, Korbut, Tamara, Ch. Stoyanov, L. Kostov, Zhivkov, Petar, O. Yordanov, S Batzev, Ch. Protohristov, A. Kugler, V. Wagner, Majerle, Mitja, Krása, Antonín, O. Svoboda, Katovsky, Karel, O. Schasny, A. Tuleushev, Gudima, Konstantin, M. I. Baznat, Ravdandorj Togoo, D. Otgonsuren, Ts Tumendelger, Ts. Damdinsuren, M. Shuta, Elzbieta Strugalska-Gola, Stanisław Kilim, M. Bielewicz, A. Wojeciechowsky, V. A. Voronko, Sotnikov, Vladimir, V.V. Sidorenko, Haysak, Ivan, Hashemi-Nezhad, Reza, Y. Borger, W. Westmeier, H. Robotham, W. Ensinger, Severin, Daniel, M. Rossbah, B. Thomauske, Zamani, Masoud, Manolopoulou, Metaxia, S. Stoulos, M. Fragopolou, S. Jokic, Harphool Kumawat, V. Kumar, and M. Sharma
Published: 2010
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44. Breakup threshold anomaly in the elastic scattering for theLi6+Zr90system

Author: Harphool Kumawat, Vivekanand Jha, R. K. Choudhury, B. J. Roy, S. Kailas, V. Kumar, Swadeshmukul Santra, Lalit Mohan Pant, Prashant Shukla, V. V. Parkar, Dipanwita Dutta, and Ajit Kumar Mohanty
Subjects: Elastic scattering, Physics, Nuclear reaction, Nuclear and High Energy Physics, Scattering, Woods–Saxon potential, Isotopes of silicon, Atomic physics, Anomaly (physics), Coupling (probability), Energy (signal processing)
Abstract: Measurements of elastic scattering for the $^{6}\mathrm{Li}+^{90}\mathrm{Zr}$ system has been performed at various energies, namely, 11, 12, 13, 15, 17, 19, 21, 25, and 30 MeV, to study the energy dependence of the interaction potential. Angular distributions have been measured in a wide angular range to extract the behavior of the potential reliably. The data have been analyzed using the phenomenological Woods-Saxon shaped optical potential and the double folding potential. The potential behavior shows the characteristics of the breakup threshold anomaly, namely, the increase in the imaginary potential near the barrier with a small reduction in the real part. Continuum-discretized-coupled-channel (CDCC) calculations give a good description of the measured elastic scattering data and predict large breakup coupling effects. The polarization potentials extracted from the CDCC calculations have been studied for the present system along with those for the $^{6}\mathrm{Li}+^{208}\mathrm{Pb}$, and $^{6}\mathrm{Li}+^{28}\mathrm{Si}$ systems, and a similar energy dependence has been obtained for all the cases considered.
Published: 2008

45. Cross sections for nuclide production in aFe56target irradiated by 300, 500, 750, 1000, 1500, and 2600 MeV protons compared with data on a hydrogen target irradiated by 300, 500, 750, 1000, and 1500 MeV/nucleonFe56ions

Author: Harphool Kumawat, K. V. Pavlov, Waclaw Gudowski, Yu. E. Titarenko, A. V. Ignatyuk, H. Duarte, Stepan G. Mashnik, Milan Tesinsky, S. N. Florya, Vyacheslav F. Batyaev, H. Ait Abderrahim, A. Yu. Titarenko, Carl-Magnus Persson, N. N. Titarenko, R. S. Tikhonov, and M. A. Butko
Subjects: Nuclear physics, Physics, Nuclear reaction, Nuclear and High Energy Physics, Hydrogen, chemistry, Half-life, chemistry.chemical_element, Gamma spectroscopy, Nuclide, Irradiation, Nucleon, Ion
Abstract: This work presents the cross sections for radioactive nuclide production in Fe-56( p, x) reactions determined in six experiments using 300, 500, 750, 1000, 1500, and 2600 MeV protons of the externa ...
Published: 2008

46. Observation of the 'K-pp'-like structure in the d(π+, K+) reaction at 1.69 GeV/ c

Author: R. Kiuchi, Kotaro Shirotori, A. O. Tokiyasu, Yudai Ichikawa, Takeshi Koike, Y. Matsumoto, Hirokazu Tamura, Seongbae Yang, Hiroyuki Ekawa, Tomonori Takahashi, Z. Tsamalaidze, Shuhei Hayakawa, Toshiyuki Tanaka, Ryotaro Honda, Hitoshi Sugimura, V. Samoilov, Stefania Bufalino, Harphool Kumawat, Shoichi Hasegawa, Yamamoto Takeshi, Shoji Suzuki, Toshiyuki Takahashi, Ryosuke Ota, Kiyoshi Tanida, Shunsuke Kanatsuki, Y. Nozawa, Hiroyuki Sako, B. J. Roy, Alessandro Feliciello, Manabu Moritsu, Kenichi Imai, Susumu Sato, Petr Evtoukhovitch, Megumi Naruki, Hyoungchan Bhang, Shigeru Ishimoto, Hiroyuki Fujioka, Mifuyu Ukai, Masayuki Niiyama, Koji Miwa, Kenji Hosomi, Tomofumi Nagae, C. Joo, and Atsushi Sakaguchi
Subjects: Physics, Particle physics, Proton, Nuclear Theory, Binding energy, Hyperon, FOS: Physical sciences, General Physics and Astronomy, Resonance, Lambda, Spectral line, Deuterium, Pi, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: We have observed a "$K^-pp$"-like structure in the $d(\pi^+,K^+)$ reaction at 1.69 GeV/$c$. In this reaction $\Lambda(1405)$ hyperon resonance is expected to be produced as a doorway to form the $K^-pp$ through the $\Lambda^*p\rightarrow K^-pp$ process. However, most of the produced $\Lambda(1405)$'s would escape from deuteron without secondary reactions. Therefore, coincidence of high-momentum ($>$ 250~MeV/$c$) proton(s) in large emission angles ($39^\circ, Comment: 8 pages, 4 figures, submitted to PTEP
Published: 2015

47. Transmutation of 129I, 237Np, 238Pu, 239Pu and 241Am Using Neutrons Produced in Target-Blanket System 'Energy & Transmutation' Bombarded by Relativistic Protons

Author: A. R. Balabekyan, Harphool Kumawat, V. M. Tsoupko-Sitnikov, S. G. Stetsenko, V. G. Kalinnikov, N. M. Vladimirova, V. I. Stegailov, A. A. Solnyshkin, M.I. Krivopustov, Vitaly Pronskikh, Karel Katovsky, and J. Adam
Subjects: Nuclotron, Proton, Nuclear transmutation, Physics::Instrumentation and Detectors, Chemistry, Neptunium, Nuclear Theory, Physics::Medical Physics, Radiochemistry, chemistry.chemical_element, Americium, Plutonium, Physics::Accelerator Physics, Spallation, Neutron, Nuclear Experiment
Abstract: Target‐blanket facility “Energy & Transmutation” was irradiated by a 2 GeV proton beam extracted from the Nuclotron Accelerator at the Joint Institute for Nuclear Research in Dubna, Russia. Radioactive samples made from iodine, neptunium, plutonium and americium were irradiated by spallation neutrons produced in the “E&T” facility. Transmutation reaction yields (residual nuclei production yields) have been determined using methods of γ‐spectroscopy. The energy spectrum of the neutron field has been studied by using a set of threshold detectors.
Published: 2005

48. Inclusive spectrum of the d(π+, K+) reaction at 1.69 GeV/c

Author: Susumu Sato, Petr Evtoukhovitch, Stefania Bufalino, Toshiyuki Takahashi, Hiroyuki Ekawa, Shoji Suzuki, Megumi Naruki, Shigeru Ishimoto, Yudai Ichikawa, Seongbae Yang, T. Takahashi, R. Kiuchi, Hitoshi Sugimura, Y. Nozawa, Z. Tsamalaidze, Hirokazu Tamura, Masayuki Niiyama, Alessandro Feliciello, Manabu Moritsu, Kenichi Imai, C. Joo, B. J. Roy, Shunsuke Kanatsuki, Y. Matsumoto, Takeshi Koike, Toshiyuki Tanaka, Kotaro Shirotori, Hiroyuki Sako, Harphool Kumawat, Shoichi Hasegawa, Kiyoshi Tanida, Shuhei Hayakawa, Mifuyu Ukai, Hyoungchan Bhang, Hiroyuki Fujioka, V. Samoilov, Ryosuke Ota, A. O. Tokiyasu, Takeshi O. Yamamoto, Ryotaro Honda, Atsushi Sakaguchi, Koji Miwa, Kenji Hosomi, and Tomofumi Nagae
Subjects: Physics, Particle physics, Proton, Scattering, Hyperon, FOS: Physical sciences, General Physics and Astronomy, Lambda, Resonance (particle physics), Momentum, Pion, High Energy Physics::Experiment, Neutron, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: We have measured an inclusive missing-mass spectrum of the $d(\pi^+, K^+)$ reaction at the pion incident momentum of 1.69 GeV/$c$ at the laboratory scattering angles between 2$^\circ$ and 16$^\circ$ with the missing-mass resolution of 2.7 $\pm$ 0.1 MeV/$c^2$ (FWHM) at the missing mass of 2.27 GeV/$c^{2}$. In this Letter, we first try to understand the spectrum as a simple quasi-free picture based on several known elementary cross sections, considering the neutron/proton Fermi motion in deuteron. While gross spectrum structures are well understood in this picture, we have observed two distinct deviations; one peculiar enhancement at 2.13 GeV/$c^2$ is due to the $\Sigma N$ cusp, and the other notable feature is a shift of a broad bump structure, mainly originating from hyperon resonance productions of $\Lambda(1405)$ and $\Sigma(1385)^{+/0}$, by about 22.4 $\pm$ 0.4 (stat.) $^{+2.7}_{-1.7}$ (syst.) MeV/$c^2$ toward the low-mass side, which is calculated in the kinematics of a proton at rest as the target., Comment: 8 pages, 3 figures, submitted to PTEP
Published: 2014

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