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1. Measurement of the background in the CMS muon detector in $${p}{p}$$ pp -collisions at $$\sqrt{s} = 13$$ s = 13 $$\,\text {Te}\hspace{-.08em}\text {V}$$ Te V

Author

CMS Muon Group, M. Tytgat, A. Muhammad, G. De Lentdecker, J. Jaramillo, L. Moureaux, L. Pétré, Y. Yang, C. Rendón, G. Gokbulut, Y. Hong, A. Samalan, G. A. Alves, F. Marujo da Silva, E. Alves Coelho, M. Barroso Ferreira Filho, E. M. Da Costa, D. De Jesus Damiao, B. C. Ferreira, S. Fonseca De Souza, K. Mota Amarilo, H. Nogima, A. Santoro, M. Thiel, A. Aleksandrov, L. Dimitrov, R. Hadjiiska, P. Iaydjiev, M. Misheva, G. Mitev, L. Ratchev, G. Rashevski, M. Shopova, G. Sultanov, A. Dimitrov, L. Litov, B. Pavlov, P. Petkov, A. Petrov, E. Shumka, S. Keshri, S. Thakur, M. Chen, X. Dong, W. Gong, Q. Hou, C. Jiang, H. Kou, Z.-A. Liu, W. Luo, J. Song, L. Sun, N. Wang, Y. Wang, Z. Wang, C. Zhang, Y. Zhang, H. Zhang, J. Zhao, A. Agapitos, Y. Ban, A. Levin, Q. Li, S. J. Qian, D. Wang, K. Wang, Z. You, C. Avila, D. A. Barbosa Trujillo, A. Cabrera, C. A. Florez, J. Fraga, J. A. Reyes Vega, F. Ramirez, M. Rodriguez, J. D. Ruiz, N. Vanegas, H. Abdalla, A. A. Abdelalim, Y. Assran, A. Radi, I. Crotty, M. A. Mahmoud, L. Balleyguier, X. Chen, C. Combaret, G. Galbit, M. Gouzevitch, G. Grenier, I. B. Laktineh, A. Luciol, L. Mirabito, W. Tromeur, I. Bagaturia, I. Lomidze, O. Kemularia, Z. Tsamalaidze, U. Böttger, D. Eliseev, T. Hebbeker, K. Hoepfner, M. Merschmeyer, F. Ivone, S. Mukherjee, F. Nowotny, B. Philipps, H. Reithler, A. Sharma, F. Torres Da Silva De Araujo, S. Wiedenbeck, S. Zaleski, F. P. Zantis, M. Abbas, S. Mallows, G. Bencze, N. Beni, J. Molnar, Z. Szillasi, D. Teyssier, B. Ujvari, G. Zilizi, J. Babbar, S. Bansal, V. Bhatnagar, S. Chauhan, A. Kaur, H. Kaur, A. Kaur Sahota, S. Kumar, T. Sheokand, J. Singh, B. C. Choudhary, A. Kumar, M. Kumar Saini, M. Naimuddin, N. Majumdar, S. Mukhopadhyay, P. Rout, V. Amoozegar, B. Boghrati, M. Ebraimi, M. Mohammadi Najafabadi, E. Zareian, M. Abbrescia, R. Aly, M. Buonsante, A. Colaleo, N. De Filippis, D. Dell’Olio, G. De Robertis, W. Elmetenawee, N. Ferrara, M. Franco, G. Iaselli, N. Lacalamita, F. Licciulli, F. Loddo, M. Maggi, S. Martiradonna, S. Nuzzo, L. Longo, A. Pellecchia, G. Pugliese, R. Radogna, D. Ramos, A. Ranieri, F. M. Simone, A. Stamerra, D. Troiano, R. Venditti, P. Verwilligen, A. Zaza, G. Abbiendi, C. Baldanza, C. Battilana, A. Benvenuti, L. Borgonovi, V. Cafaro, F. R. Cavallo, A. Crupano, M. Cuffiani, G. M. Dallavalle, F. Fabbri, A. Fanfani, D. Fasanella, P. Giacomelli, V. Giordano, C. Guandalini, L. Guiducci, S. Lo Meo, L. Lunerti, S. Marcellini, G. Masetti, F. L. Navarria, G. Paggi, A. Perrotta, F. Primavera, A. M. Rossi, T. Rovelli, G. Torromeo, L. Benussi, S. Bianco, R. Campagnola, M. Caponero, S. Colafranceschi, S. Meola, L. Passamonti, D. Piccolo, D. Pierluigi, G. Raffone, A. Russo, G. Saviano, S. Buontempo, A. Cagnotta, F. Carnevali, F. Cassese, N. Cavallo, A. De Iorio, F. Fabozzi, A. O. M. Iorio, L. Lista, P. Paolucci, G. Passeggio, B. Rossi, L. Barcellan, M. Bellato, M. Benettoni, A. Bergnoli, A. Bragagnolo, R. Carlin, L. Castellani, P. Checchia, L. Ciano, A. Colombo, D. Corti, F. Gasparini, U. Gasparini, F. Gonella, A. Gozzelino, A. Griggio, G. Grosso, M. Gulmini, R. Isocrate, E. Lusiani, G. Maron, M. Margoni, A. T. Meneguzzo, M. Migliorini, L. Modenese, F. Montecassiano, M. Negrello, M. Passaseo, J. Pazzini, L. Ramina, M. Rampazzo, M. Rebeschini, P. Ronchese, R. Rossin, F. Simonetto, M. Toffano, N. Toniolo, A. Triossi, S. Ventura, M. Zanetti, P. G. Zatti, P. Zotto, A. Zucchetta, S. AbuZeid, C. Aimè, A. Braghieri, S. Calzaferri, D. Fiorina, S. Gigli, P. Montagna, C. Riccardi, P. Salvini, I. Vai, P. Vitulo, N. Amapane, G. Cotto, D. Dattola, P. De Remigis, B. Kiani, C. Mariotti, S. Maselli, M. Pelliccioni, F. Rotondo, A. Staiano, D. Trocino, G. Umoret, E. Asilar, T. J. Kim, J. A. Merlin, S. Choi, B. Hong, K. S. Lee, J. Goh, J. Choi, J. Kim, U. Yang, I. Yoon, W. Jang, J. Heo, D. Kang, Y. Kang, D. Kim, S. Kim, B. Ko, J. S. H. Lee, I. C. Park, I. J. Watson, S. Yang, Y. Jeong, Y. Lee, I. Yu, G. Alasfour, T. Beyrouthy, Y. Gharbia, Y. Maghrbi, M. Otkur, H. Castilla-Valdez, H. Crotte Ledesma, R. Lopez-Fernandez, A. Sánchez Hernández, M. Ramírez García, E. Vazquez, M. A. Shah, N. Zaganidis, I. Pedraza, C. Uribe Estrada, A. Ahmad, W. Ahmed, M. I. Asghar, H. R. Hoorani, S. Muhammad, A. Wajid, J. Alcaraz Maestre, A. Álvarez Fernández, Cristina F. Fernandez Bedoya, L. C. Blanco Ramos, E. Calvo, C. A. Carrillo Montoya, J. M. Cela Ruiz, M. Cepeda, M. Cerrada, N. Colino, S. Cuadrado Calzada, J. Cuchillo Ortega, B. De La Cruz, C. I. de Lara Rodríguez, D. Fernández Del Val, J. P. Fernández Ramos, M. C. Fouz, D. Francia Ferrero, J. García Romero, O. Gonzalez Lopez, S. Goy Lopez, M. I. Josa, J. León Holgado, O. Manzanilla Carretero, I. Martín Martín, J. J. Martínez Morales, E. Martín Viscasillas, D. Moran, Á. Navarro Tobar, R. Paz Herrera, J. C. Puras Sánchez, J. Puerta Pelayo, S. Pulido Ferrero, I. Redondo, D. D. Redondo Ferrero, V. Salto Parra, S. Sánchez Navas, J. Sastre, L. Urda Gómez, J. Vazquez Escobar, J. F. de Trocóniz, F. Frias Garcia-Lago, R. Reyes-Almanza, B. Alvarez Gonzalez, J. Cuevas, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Caballero, P. Leguina López, E. Palencia Cortezon, C. Ramón Álvarez, J. Prado Pico, V. Rodríguez Bouza, A. Soto Rodríguez, A. Trapote, C. Vico Villalba, B. Kailasapathy, K. Malagalage, D. U. J. Sonnadara, D. D. C. Wickramarathna, W. G. D. Dharmaratna, K. Liyanage, N. Perera, N. Wickramage, P. Aspell, M. Bianco, D. Bozzato, S. Brachet, A. Conde Garcia, A. Dabrowski, R. De Oliveira, F. Fallavollita, P. Kicsiny, E. Hazen, S. May, A. Peck, K. Salyer, I. Suarez, S. Abbott, J. Bonilla, R. Breedon, H. Cai, P. T. Cox, R. Erbacher, O. Kukral, C. McLean, G. Mocellin, M. Mulhearn, B. Regnery, M. Tripathi, G. Waegel, Y. Yao, J. Carlson, R. Cousins, A. Dasgupta, A. Datta, J. Hauser, M. Ignatenko, M. A. Iqbal, C. Lo, D. Saltzberg, C. Schnaible, V. Valuev, R. Clare, M. Gordon, G. Hanson, N. Amin, J. Bradmiller-Feld, C. Campagnari, T. Danielson, A. Dishaw, A. Dorsett, B. Marsh, H. Mei, M. Oshiro, J. Richman, F. Setti, M. F. Sevilla, P. Siddireddy, S. Wang, C. Aruta, V. Barashko, V. Cherepanov, M. Dittrich, A. Korytov, E. Kuznetsova, A. Madorsky, G. Mitselmakher, A. Muthirakalayil Madhu, N. Rawal, N. Terentyev, J. Wang, B. Alsufyani, S. Butalla, T. Elkafrawy, M. Hohlmann, E. Yanes, J. Eysermans, E. Barberis, Y. Haddad, Y. Han, G. Madigan, D. M. Morse, V. Nguyen, D. Wood, S. Bhattacharya, J. Bueghly, Z. Chen, K. A. Hahn, Y. Liu, Y. Miao, D. G. Monk, M. H. Schmitt, A. Taliercio, M. Velasco, B. Bylsma, M. Carrigan, R. De Los Santos, L. S. Durkin, C. Hill, K. Banicz, J. Liu, M. Matveev, B. P. Padley, D. Aebi, M. Ahmad, T. Akhter, A. Bolshov, O. Bouhali, R. Eusebi, J. Gilmore, T. Huang, E. Juska, T. Kamon, H. Kim, M. Kizlov, S. Malhotra, R. Mueller, R. Rabadan, D. Rathjens, A. Safonov, P. E. Karchin, A. Aravind, K. Black, I. De Bruyn, P. Everaerts, C. Galloni, M. Herndon, A. Lanaro, R. Loveless, J. Madhusudanan Sreekala, S. Mondal, D. Teague, W. Vetens, A. Warden, I. Azhgirey, V. Borshch, L. Chtchipunov, A. Egorov, G. Gavrilov, V. Golovtcov, M. Ivanov, V. Ivantchenko, Y. Ivanov, V. Karjavine, A. Khodinov, V. Kim, I. A. Kurochkin, P. Levchenko, V. Murzin, S. Nasybulin, V. Oreshkin, V. Palichik, V. Perelygin, A. Riabchikova, D. Sosnov, V. Sulimov, L. Uvarov, S. Vavilov, and A. Vorobyev

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract The CMS detector, including its muon system, has been operating at the CERN LHC in increasingly challenging conditions for about 15 years. The muon detector was designed to provide excellent triggering and track reconstruction for muons produced in proton–proton collisons at an instantaneous luminosity ( $$\mathcal {L}$$ L ) of $$1 \times 10^{34}$$ 1 × 10 34 cm $$^{-2}$$ - 2 s $$^{-1}$$ - 1 . During the Run 2 data-taking period (2015–2018), the LHC achieved an instantaneous luminosity of twice its design value, resulting in larger background rates and making the efficient detection of muons more difficult. While some backgrounds result from natural radioactivity, cosmic rays, and interactions of the circulating protons with residual gas in the beam pipe, the dominant source of background hits in the muon system arises from proton–proton interactions themselves. Charged hadrons leaving the calorimeters produce energy deposits in the muon chambers. In addition, high-energy particles interacting in the hadron calorimeter and forward shielding elements generate thermal neutrons, which leak out of the calorimeter and shielding structures, filling the CMS cavern. We describe the method used to measure the background rates in the various muon subsystems. These rates, in conjunction with simulations, can be used to estimate the expected backgrounds in the High-Luminosity LHC. This machine will run for at least 10 years starting in 2029 reaching an instantaneous luminosity of $$\mathcal {L} = 5 \times \text {10}^\text {34}\,\text {cm}^\text {-2}\,\text {s}^\text {-1}$$ L = 5 × 10 34 cm -2 s -1 and increasing ultimately to $$\mathcal {L} = 7.5 \times \text {10}^\text {34}\,\text {cm}^\text {-2}\,\text {s}^\text {-1}$$ L = 7.5 × 10 34 cm -2 s -1 . These background estimates have been a key ingredient for the planning and design of the muon detector upgrade.

Published
2024
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2. Pygmy dipole resonance in 124Sn populated by inelastic scattering of 17O

Author

L. Pellegri, A. Bracco, F.C.L. Crespi, S. Leoni, F. Camera, E.G. Lanza, M. Kmiecik, A. Maj, R. Avigo, G. Benzoni, N. Blasi, C. Boiano, S. Bottoni, S. Brambilla, S. Ceruti, A. Giaz, B. Million, A.I. Morales, R. Nicolini, V. Vandone, O. Wieland, D. Bazzacco, P. Bednarczyk, M. Bellato, B. Birkenbach, D. Bortolato, B. Cederwall, L. Charles, M. Ciemala, G. De Angelis, P. Désesquelles, J. Eberth, E. Farnea, A. Gadea, R. Gernhäuser, A. Görgen, A. Gottardo, J. Grebosz, H. Hess, R. Isocrate, J. Jolie, D. Judson, A. Jungclaus, N. Karkour, M. Krzysiek, E. Litvinova, S. Lunardi, K. Mazurek, D. Mengoni, C. Michelagnoli, R. Menegazzo, P. Molini, D.R. Napoli, A. Pullia, B. Quintana, F. Recchia, P. Reiter, M.D. Salsac, B. Siebeck, S. Siem, J. Simpson, P.-A. Söderström, O. Stezowski, Ch. Theisen, C. Ur, J.J. Valiente Dobon, and M. Zieblinski

Subjects
Physics, QC1-999
Abstract

The γ decay from the high-lying states of 124Sn was measured using the inelastic scattering of 17O at 340 MeV. The emitted γ rays were detected with high resolution with the AGATA demonstrator array and the scattered ions were detected in two segmented ΔE–E silicon telescopes. The angular distribution was measured both for the γ rays and the scattered 17O ions. An accumulation of E1 strength below the particle threshold was found and compared with previous data obtained with (γ,γ′) and (α,α′γ) reactions. The present results of elastic scattering, and excitation of E2 and E1 states were analysed using the DWBA approach. From this comprehensive description the isoscalar component of the 1− excited states was extracted. The obtained values are based on the comparison of the data with DWBA calculations including a form factor deduced using a microscopic transition density. Keywords: Low-lying electric dipole excitations, 124Sn, Isospin character

Published
2014
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3. The analytical method algorithm for trigger primitives generation at the LHC drift tubes detector

Author

G. Abbiendi, J. Alcaraz Maestre, A. Álvarez Fernández, B. Álvarez González, N. Amapane, I. Bachiller, L. Barcellan, C. Baldanza, C. Battilana, M. Bellato, G. Bencze, M. Benettoni, N. Beni, A. Benvenuti, A. Bergnoli, L.C. Blanco Ramos, L. Borgonovi, A. Bragagnolo, V. Cafaro, A. Calderon, E. Calvo, R. Carlin, C.A. Carrillo Montoya, F.R. Cavallo, J.M. Cela Ruiz, M. Cepeda, M. Cerrada, P. Checchia, L. Ciano, N. Colino, D. Corti, G. Cotto, A. Crupano, S. Cuadrado Calzada, J. Cuevas, M. Cuffiani, G.M. Dallavalle, D. Dattola, B. De La Cruz, C.I. de Lara Rodríguez, P. De Remigis, C. Erice Cid, D. Eliseev, F. Fabbri, A. Fanfani, D. Fasanella, C.F. Bedoya, J.F. de Trocóniz, D. Fernández del Val, J. Fernández Menéndez, J.P. Fernández Ramos, S. Folgueras, M.C. Fouz, D. Francia Ferrero, J. García Romero, F. Gasparini, U. Gasparini, V. Giordano, F. Gonella, I. González Caballero, J.R. González Fernández, O. González López, S. Goy López, A. Gozzelino, A. Griggio, G. Grosso, C. Guandalini, L. Guiducci, M. Gulmini, T. Hebbeker, K. Hoepfner, R. Isocrate, M.I. Josa, B. Kiani, J. León Holgado, S. Lo Meo, E. Lusiani, L. Lunerti, S. Marcellini, M. Margoni, C. Mariotti, I. Martín Martín, J.J. Martínez Morales, S. Maselli, G. Masetti, A.T. Meneguzzo, M. Merschmeyer, M. Migliorini, L. Modenese, J. Molnar, F. Montecassiano, J. Mora Martínez, D. Moran, S. Mukherjee, J.J. Navarrete, F. Navarria, A. Navarro Tobar, F. Nowotny, E. Palencia Cortezón, M. Passaseo, J. Pazzini, M. Pelliccioni, A. Perrotta, B. Philipps, J. Piedra Gomez, F. Primavera, J. Puerta Pelayo, J.C. Puras Sánchez, C. Ramón Álvarez, I. Redondo, D.D. Redondo Ferrero, H. Reithler, R. Reyes-Almanza, V. Rodríguez Bouza, P. Ronchese, A.M. Rossi, R. Rossin, F. Rotondo, T. Rovelli, S. Sánchez Cruz, S. Sánchez Navas, J. Sastre, A. Sharma, F. Simonetto, A. Soto Rodríguez, A. Staiano, Z. Szillasi, D.F. Teyssier, N. Toniolo, G. Torromeo, A. Trapote, N. Trevisani, A. Triossi, D. Trocino, B. Ujvari, G. Umoret, L. Urda Gómez, B. Uwe, S. Ventura, C. Vico Villalba, S. Wiedenbeck, M. Zanetti, F.P. Zantis, G. Zilizi, P. Zotto, and A. Zucchetta

Subjects
High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Instrumentation, High Energy Physics - Experiment
Abstract

We gratefully acknowledge the enduring support provided by the following funding agencies: the Bundesministerium für Bildung und Forschung, Germany; the National Research, Development and Innovation Fund, Hungary; the Istituto Nazionale di Fisica Nucleare, Italy; Agencia Estatal de Investigación del Ministerio de Ciencia e Innovación, Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, and Plan de Ciencia, Tecnología e Innovación de Asturias, Spain., Abbiendi G., Alcaraz Maestre J., Álvarez Fernández A., Álvarez González B., Amapane N., Bachiller I., Barcellan L., Baldanza C., Battilana C., Bellato M., Bencze G., Benettoni M., Beni N., Benvenuti A., Bergnoli A., Blanco Ramos L.C., Borgonovi L., Bragagnolo A., Cafaro V., Calderon A., Calvo E., Carlin R., Carrillo Montoya C.A., Cavallo F.R., Cela Ruiz J.M., Cepeda M., Cerrada M., Checchia P., Ciano L., Colino N., Corti D., Cotto G., Crupano A., Cuadrado Calzada S., Cuevas J., Cuffiani M., Dallavalle G.M., Dattola D., De La Cruz B., de Lara Rodríguez C.I., De Remigis P., Erice Cid C., Eliseev D., Fabbri F., Fanfani A., Fasanella D., Bedoya C.F., de Trocóniz J.F., Fernández del Val D., Fernández Menéndez J., Fernández Ramos J.P., Folgueras S., Fouz M.C., Francia Ferrero D., García Romero J., Gasparini F., Gasparini U., Giordano V., Gonella F., González Caballero I., González Fernández J.R., González López O., Goy López S., Gozzelino A., Griggio A., Grosso G., Guandalini C., Guiducci L., Gulmini M., Hebbeker T., Hoepfner K., Isocrate R., Josa M.I., Kiani B., León Holgado J., Lo Meo S., Lusiani E., Lunerti L., Marcellini S., Margoni M., Mariotti C., Martín Martín I., Martínez Morales J.J., Maselli S., Masetti G., Meneguzzo A.T., Merschmeyer M., Migliorini M., Modenese L., Molnar J., Montecassiano F., Mora Martínez J., Moran D., Mukherjee S., Navarrete J.J., Navarria F., Navarro Tobar A., Nowotny F., Palencia Cortezón E., Passaseo M., Pazzini J., Pelliccioni M., Perrotta A., Philipps B., Piedra Gomez J., Primavera F., Puerta Pelayo J., Puras Sánchez J.C., Ramón Álvarez C., Redondo I., Redondo Ferrero D.D., Reithler H., Reyes-Almanza R., Rodríguez Bouza V., Ronchese P., Rossi A.M., Rossin R., Rotondo F., Rovelli T., Sánchez Cruz S., Sánchez Navas S., Sastre J., Sharma A., Simonetto F., Soto Rodríguez A., Staiano A., Szillasi Z., Teyssier D.F., Toniolo N., Torromeo G., Trapote A., Trevisani N., Triossi A., Trocino D., Ujvari B., Umoret G., Urda Gómez L., Uwe B., Ventura S., Vico Villalba C., Wiedenbeck S., Zanetti M., Zantis F.P., Zilizi G., Zotto P., Zucchetta A.

Published
2023

4. High resolution gamma-ray spectrometry using GALILEO array

Author

D. Testov, J.J. Valiente-Dobon, D. Mengoni, F. Recchia, A. Goasduff, A. Boso, S. Lenzi, G. de Angelis, S. Bakes, C. Boiano, B. Cederwall, G. Colucci, M. Cicerchia, P. Colovic, F. Didierjean, M. Doncel, J.A. Duenas, F. Galtarossa, A. Gozzelino, K. Hadynska-Klek, R. Isocrate, G. Jaworski, P.R. John, H. Liu, S. Lunardi, R. Menegazzo, A. Mentana, V. Modamio, A. Nannini, D.R. Napoli, M. Palacz, G. Pasqualato, M. Rocchini, S. Riccetto, B. Saygi, E. Sahin, M. Siciliano, Yu. Sobolev, and S. Szilner

Subjects
Physics, γ -ray spectrometer, Nuclear and High Energy Physics, Radiation, Physics and Astronomy (miscellaneous), business.industry, Materials Science (miscellaneous), High resolution, γ -ray spectroscopy, nuclearstate lifetime, Condensed Matter Physics, lcsh:QC1-999, Optics, nuclear structure, Galileo (vibration training), business, lcsh:Physics, Gamma ray spectrometry
Abstract

The GALILEO γ -ray spectrometer has been constructed at the Legnaro National Laboratory of INFN (LNL-INFN). It can be coupled to advanced ancillary devices which allows nuclear structure studies employing the variety of in-beam γ -ray spectroscopy methods. Such studies benefit from reactions induced by the intense stable beams delivered by the Tandem-ALPI-PIAVE accelerator complex and by the radioactive beams which will be provided by the SPES facility. In this paper we outline two experiments performed within the experimental campaign at GALILEO coupled to the EUCLIDES Si-ball and the Neutron Wall array. The first one was aimed at spectroscopic studies in A=31 mirror nuclei and the second one at measurements of lifetimes of excited states in nuclei in the vicinity of 100 Sn.

Published
2019
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5. Test beam characterization of sensor prototypes for the CMS Barrel MIP Timing Detector

Author

P. Martinez del Arbol, A. Ghezzi, R. Carlin, Jennifer Ott, Matthew Joyce, V. Mechinsky, Geonhee Oh, C. Perez, Giulia Sorrentino, A. Benaglia, G. Pessina, I. Tlisova, Wolfgang Funk, O. Neogi, L. Gray, J. Varela, Erik Brücken, S. Ganjour, Balazs Ujvari, I. Dutta, Y. Zhang, R. Arcidiacono, P. Meridiani, G. Zhang, R. Paramatti, Francesco Pandolfi, Massimo Casarsa, G. Organtini, R. Bellan, Toyoko Orimoto, Jack King, Y. Onel, P. Debbins, M. W. Arenton, F. De Guio, Maria Spiropulu, Alexander Dermenev, E. Tiras, D. Del Re, Lautaro Narvaez, Christopher Madrid, D. Stuart, Si Xie, M. Wayne, D. Marlow, Tiehui Liu, Ryan Heller, Kamuran Dilsiz, M. Korjik, Christopher Rogan, Tanvi Wamorkar, Yuri Andreev, C. Rovelli, Fabio Cossutti, J. Wetzel, Nicolaus Kratochwil, Anton Karneyeu, Sebastian White, Amedeo Staiano, I. Dafinei, Mohammad Alhusseini, Badder Marzocchi, Gillian Kopp, H. Chen, Geum Bong Yu, Christopher Tully, U. Dosselli, D. Tlisov, Dave Winn, Wenbo Li, K. F. Di Petrillo, Richard J. Abbott, Bennett Marsh, Hasan Ogul, L. A. T. Bauerdick, I. Mandjavize, Mário Costa, Raffaella Tramontano, E. Hazen, A. Peck, Gintautas Tamulaitis, Simone Pigazzini, Martina Malberti, W. Sands, Michael Gardner, F. J.M. Geurts, J. C. Silva, Chang-Seong Moon, M. Benettoni, M. Paganoni, A. Mestvirishvili, M. Sahin, S. Ventura, S. Hedia, G. Dissertori, T. Tabarelli de Fatis, F. Guilloux, Maria Margherita Obertino, C. Royon, Jane Nachtman, J. Mao, Claudio Gotti, Marco Bellato, Roberto Mulargia, Nan Lu, Z. Ye, Enrico Robutti, Michele Gallinaro, Hyun-Chul Kim, C. McMahon, Francesca Maria Addesa, Yurii Maravin, Marco Toliman Lucchini, S. N. Gninenko, Slawek Tkaczyk, K. Kaadze, W. Lustermann, Valentina Sola, Fabio Monti, Stefan Gundacker, C. Fernandez Madrazo, F. Santanastasio, Sunil Dogra, Marco Ferrero, S. Li, R. Isocrate, Hee-Won Lee, S. Nargelas, Micah M. Murray, Abdollah Mohammadi, M. Campana, O. K. Köseyan, Nicola Redaelli, James Sheplock, Zehui Zhang, R. Bertoni, F. Golf, P. Checchia, Claudio Campagnari, Christopher Neu, Daniel Spitzbart, L. Zhang, A. G. Stahl Leiton, Ivan Ovtin, Joel Nathan Butler, R. Y. Zhu, Ulascan Sarica, Federico Siviero, E. Auffray, T. Isidori, M. Lazarovits, Diogo Bastos, Carlos Pena, Adolf Bornheim, J. S. Gonzalez, R. Jaramillo, Artur Apresyan, I. Schmidt, N. Minafra, Marta Tornago, D. Rigoni, M. Titov, R. Mazza, A. Abreu, S. Chidzik, S. Wu, Olmo Cerri, E. Di Marco, J. Trevor, Marcos Fernandez, Christina Wang, Shudhashil Bharthuar, Y. Musienko, Travis Anderson, J. S. H. Lee, R. Schmitz, M. Besancon, Ang Li, Nicolo Cartiglia, A. Ledovskoy, F. Caleb, F. Chlebana, Z. Flowers, Y. Tang, Benjamin Tannenwald, Brady R. Cox, Isabel Ojalvo, Olesia Radchenko, Paolo Carniti, A. Heering, M. Tosi, Livia Soffi, Indara Suarez, Xuejun Wang, Tahereh Sadat Niknejad, I. Vila, A.N. Kozyrev, Richard J. K. Taylor, Roberto Rossin, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CMS MTD, Abbott, R, Abreu, A, Addesa, F, Alhusseini, M, Anderson, T, Andreev, Y, Apresyan, A, Arcidiacono, R, Arenton, M, Auffray, E, Bastos, D, Bauerdick, L, Bellan, R, Bellato, M, Benaglia, A, Benettoni, M, Bertoni, R, Besancon, M, Bharthuar, S, Bornheim, A, Brucken, E, Butler, J, Campagnari, C, Campana, M, Carlin, R, Carniti, P, Cartiglia, N, Casarsa, M, Cerri, O, Checchia, P, Chen, H, Chidzik, S, Chlebana, F, Cossutti, F, Costa, M, Cox, B, Dafinei, I, de Guio, F, Debbins, P, del Re, D, Dermenev, A, Di Marco, E, Dilsiz, K, Di Petrillo, K, Dissertori, G, Dogra, S, Dosselli, U, Dutta, I, Caleb, F, Madrazo, C, Fernandez, M, Ferrero, M, Flowers, Z, Funk, W, Gallinaro, M, Ganjour, S, Gardner, M, Geurts, F, Ghezzi, A, Gninenko, S, Golf, F, Gonzalez, J, Gotti, C, Gray, L, Guilloux, F, Gundacker, S, Hazen, E, Hedia, S, Heering, A, Heller, R, Isidori, T, Isocrate, R, Jaramillo, R, Joyce, M, Kaadze, K, Karneyeu, A, Kim, H, King, J, Kopp, G, Korjik, M, Koseyan, O, Kozyrev, A, Kratochwil, N, Lazarovits, M, Ledovskoy, A, Lee, H, Lee, J, Li, A, Li, S, Li, W, Liu, T, Lu, N, Lucchini, M, Lustermann, W, Madrid, C, Malberti, M, Mandjavize, I, Mao, J, Maravin, Y, Marlow, D, Marsh, B, del Arbol, P, Marzocchi, B, Mazza, R, Mcmahon, C, Mechinsky, V, Meridiani, P, Mestvirishvili, A, Minafra, N, Mohammadi, A, Monti, F, Moon, C, Mulargia, R, Murray, M, Musienko, Y, Nachtman, J, Nargelas, S, Narvaez, L, Neogi, O, Neu, C, Niknejad, T, Obertino, M, Ogul, H, Oh, G, Ojalvo, I, Onel, Y, Organtini, G, Orimoto, T, Ott, J, Ovtin, I, Paganoni, M, Pandolfi, F, Paramatti, R, Peck, A, Perez, C, Pessina, G, Pena, C, Pigazzini, S, Radchenko, O, Redaelli, N, Rigoni, D, Robutti, E, Rogan, C, Rossin, R, Rovelli, C, Royon, C, Sahin, M, Sands, W, Santanastasio, F, Sarica, U, Schmidt, I, Schmitz, R, Sheplock, J, Silva, J, Siviero, F, Soffi, L, Sola, V, Sorrentino, G, Spiropulu, M, Spitzbart, D, Leiton, A, Staiano, A, Stuart, D, Suarez, I, de Fatis, T, Tamulaitis, G, Tang, Y, Tannenwald, B, Taylor, R, Tiras, E, Titov, M, Tkaczyk, S, Tlisov, D, Tlisova, I, Tornago, M, Tosi, M, Tramontano, R, Trevor, J, Tully, C, Ujvari, B, Varela, J, Ventura, S, Vila, I, Wamorkar, T, Wang, C, Wang, X, Wayne, M, Wetzel, J, White, S, Winn, D, Wu, S, Xie, S, Ye, Z, Yu, G, Zhang, G, Zhang, L, Zhang, Y, Zhang, Z, Zhu, R, Ministerio de Economía y Competitividad (España), European Organization for Nuclear Research, Fundação para a Ciência e a Tecnologia (Portugal), European Commission, Academy of Finland, Department of Energy (US), Helsinki Institute of Physics, Abbott, R., Abreu, A., Addesa, F., Alhusseini, M., Anderson, T., Andreev, Y., Apresyan, A., Arcidiacono, R., Arenton, M., Auffray, E., Bastos, D., Bauerdick, L. A. T., Bellan, R., Bellato, M., Benaglia, A., Benettoni, M., Bertoni, R., Besancon, M., Bharthuar, S., Bornheim, A., Brücken, E., Butler, J. N., Campagnari, C., Campana, M., Carlin, R., Carniti, P., Cartiglia, N., Casarsa, M., Cerri, O., Checchia, P., Chen, H., Chidzik, S., Chlebana, F., Cossutti, F., Costa, M., Cox, B., Dafinei, I., De Guio, F., Debbins, P., del Re, D., Dermenev, A., Di Marco, E., Dilsiz, K., Di Petrillo, K. F., Dissertori, G., Dogra, S., Dosselli, U., Dutta, I., Caleb, F., Fernandez Madrazo, C., Fernandez, M., Ferrero, M., Flowers, Z., Funk, W., Gallinaro, M., Ganjour, S., Gardner, M., Geurts, F., Ghezzi, A., Gninenko, S., Golf, F., Gonzalez, J., Gotti, C., Gray, L., Guilloux, F., Gundacker, S., Hazen, E., Hedia, S., Heering, A., Heller, R., Isidori, T., Isocrate, R., Jaramillo, R., Joyce, M., Kaadze, K., Karneyeu, A., Kim, H., King, J., Kopp, G., Korjik, M., Koseyan, O. K., Kozyrev, A., Kratochwil, N., Lazarovits, M., Ledovskoy, A., Lee, H., Lee, J., Li, A., Li, S., Li, W., Liu, T., Lu, N., Lucchini, M., Lustermann, W., Madrid, C., Malberti, M., Mandjavize, I., Mao, J., Maravin, Y., Marlow, D., Marsh, B., Martinez del Arbol, P., Marzocchi, B., Mazza, R., Mcmahon, C., Mechinsky, V., Meridiani, P., Mestvirishvili, A., Minafra, N., Mohammadi, A., Monti, F., Moon, C. S., Mulargia, R., Murray, M., Musienko, Y., Nachtman, J., Nargelas, S., Narvaez, L., Neogi, O., Neu, C., Niknejad, T., Obertino, M., Ogul, H., Oh, G., Ojalvo, I., Onel, Y., Organtini, G., Orimoto, T., Ott, J., Ovtin, I., Paganoni, M., Pandolfi, F., Paramatti, R., Peck, A., Perez, C., Pessina, G., Pena, C., Pigazzini, S., Radchenko, O., Redaelli, N., Rigoni, D., Robutti, E., Rogan, C., Rossin, R., Rovelli, C., Royon, C., Sahin, M. Ö., Sands, W., Santanastasio, F., Sarica, U., Schmidt, I., Schmitz, R., Sheplock, J., Silva, J. C., Siviero, F., Soffi, L., Sola, V., Sorrentino, G., Spiropulu, M., Spitzbart, D., Stahl Leiton, A. G., Staiano, A., Stuart, D., Suarez, I., Tabarelli de Fatis, T., Tamulaitis, G., Tang, Y., Tannenwald, B., Taylor, R., Tiras, E., Titov, M., Tkaczyk, S., Tlisov, D., Tlisova, I., Tornago, M., Tosi, M., Tramontano, R., Trevor, J., Tully, C. G., Ujvari, B., Varela, J., Ventura, S., Vila, I., Wamorkar, T., Wang, C., Wang, X., Wayne, M., Wetzel, J., White, S., Winn, D., Wu, S., Xie, S., Ye, Z., Yu, G. B., Zhang, G., Zhang, L., Zhang, Y., Zhang, Z., and Zhu (the CMS MTD Group), R.

Subjects
Physics - Instrumentation and Detectors, Scintillation and licht emission processes (solid, gas and liquid scintillators), APDS, Ga, CMOS imager, APDs, CCDs, CMOS imagers, EBCCDs, EMCCDs, Etc), G-APDs, Gas, Liquid scintillators), Photon detectors for UV, Scintillation and light emission processes (solid, Scintillators, Si-PMTs, Timing detectors, Visible and IR photons (solid-state) (PIN diodes, 7. Clean energy, 01 natural sciences, Lyso, 030218 nuclear medicine & medical imaging, law.invention, 0302 clinical medicine, law, Detectors and Experimental Techniques, physics.ins-det, time resolution, Instrumentation, Mathematical Physics, Event reconstruction, CMS, Detector, p: beam, Visible and IR photons (solid-state) (PIN diodes, APDS, Si-PMTs, G-APDx, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc), Instrumentation and Detectors (physics.ins-det), PARTICLE PHYSICS, Visible and IR photons (solid-state) (PIN diode, performance, Si-PMT, Materials science, Bar (music), FOS: Physical sciences, Scintillator, 114 Physical sciences, EMCCD, 03 medical and health sciences, Silicon photomultiplier, Optics, 0103 physical sciences, photomultiplier: silicon, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], CCD, LARGE HADRON COLLIDER, 010308 nuclear & particles physics, business.industry, EBCCD, APD, G-APD, Timing detector, efficiency, scintillation counter: crystal, business, Beam (structure)
Abstract

CMS MTD collaboration: et al., The MIP Timing Detector will provide additional timing capabilities for detection of minimum ionizing particles (MIPs) at CMS during the High Luminosity LHC era, improving event reconstruction and pileup rejection. The central portion of the detector, the Barrel Timing Layer (BTL), will be instrumented with LYSO:Ce crystals and Silicon Photomultipliers (SiPMs) providing a time resolution of about 30 ps at the beginning of operation, and degrading to 50-60 ps at the end of the detector lifetime as a result of radiation damage. In this work, we present the results obtained using a 120 GeV proton beam at the Fermilab Test Beam Facility to measure the time resolution of unirradiated sensors. A proof-of-concept of the sensor layout proposed for the barrel region of the MTD, consisting of elongated crystal bars with dimensions of about 3×3×57 mm3 and with double-ended SiPM readout, is demonstrated. This design provides a robust time measurement independent of the impact point of the MIP along the crystal bar. We tested LYSO:Ce bars of different thickness (2, 3, 4 mm) with a geometry close to the reference design and coupled to SiPMs manufactured by Hamamatsu and Fondazione Bruno Kessler. The various aspects influencing the timing performance such as the crystal thickness, properties of the SiPMs (e.g. photon detection efficiency), and impact angle of the MIP are studied. A time resolution of about 28 ps is measured for MIPs crossing a 3 mm thick crystal bar, corresponding to a most probable value (MPV) of energy deposition of 2.6 MeV, and of 22 ps for the 4.2 MeV MPV energy deposition expected in the BTL, matching the detector performance target for unirradiated devices., We acknowledge the support provided to the MTD project by the following funding agencies: CERN; Academy of Finland, MEC, and HIP (Finland); CEA (France); NKFIH, OTKA-131991 (Hungary); INFN (Italy); NRF-2008-00460, 2018R1A6A1A06024970, 2020R1A2C1012322 (Republic of Korea); LAS (Lithuania); FCT (Portugal); MON, Rosatom, RAS, RFBR, and NRC KI (Russia); SEIDI, CPAN, PCTI, and FEDER (Spain); Swiss Funding Agencies (Switzerland); DOE and NSF (U.S.A.).

Published
2021
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6. Irradiation aging of the CMS Drift Tube muon detector

Author

A. Álvarez Fernández, F. Gasparini, G. Grosso, Marco Cuffiani, D. D. Redondo Ferrero, D. Corti, Alberto Benvenuti, Marco Bellato, Paolo Checchia, S. Gosh, Carsten Heidemann, J. Sastre, Amedeo Staiano, Á. Navarro Tobar, J. J. Martínez Morales, Teresa Rodrigo, Ignacio Redondo, Franco Gonella, Stefano Marcellini, I. Gonzalez Caballero, Dermot Moran, Jonas Roemer, Sandro Ventura, Fabio Montecassiano, Bilal Kiani, B. Philipps, S. Sanchez Cruz, A. Bragagnolo, O. Gonzalez Lopez, Martino Margoni, Marcos Cerrada, S. Lo Meo, Luigi Guiducci, Gianni Masetti, J. García Romero, Carlo Battilana, J. Fernandez Menendez, Ugo Gasparini, J. R. González Fernández, Ezio Torassa, G. M. Dallavalle, Matteo Presilla, Enrique Calvo, Daniel Teyssier, Alessandra Fanfani, F. Simonetto, R. Isocrate, P. J. Fernández Manteca, Pierluigi Zotto, Jacopo Pazzini, V. Rodríguez Bouza, J. M. Cela Ruiz, S. Caturan, G. L. Pinna Angioni, G. Zilizi, V. Cafaro, Chiara Mariotti, F. Rotondo, Andrea Gozzelino, Silvia Maselli, Federica Primavera, Roberto Carlin, Nicola Pozzobon, Alessio Boletti, Luca Scodellaro, Francesca Romana Cavallo, Maria Cepeda, Giovanni Abbiendi, A. Griggio, J. F. de Trocóniz, Daniele Trocino, Paolo Ronchese, Noemi Beni, Thomas Hebbeker, Maria Isabel Josa, Cédric Prieels, Irene Bachiller, Santiago Folgueras, J.C. Oller, B. De La Cruz, C. Erice Cid, J. M. Vizan Garcia, D. Dattola, J. Puerta Pelayo, C. Guandalini, Hans Reithler, L. Modenese, N. Toniolo, Javier Cuevas, P. De Remigis, CristinaF. Bedoya, Giovanni Mocellin, Francesco Navarria, Nicola Amapane, B. Chazin Quero, Matteo Pegoraro, J. Piedra Gomez, A. Molinero, M. Pelliccioni, Anna Teresa Meneguzzo, J. J. Navarrete, Kerstin Hoepfner, Gy L. Bencze, M. Benettoni, J. M. Hernandez, Mara Senghi Soares, Marina Passaseo, Nicanor Colino, M. C. Fouz, J. C. Marin, Fabio Iemmi, G. Cotto, L. C. Blanco Ramos, I. Martín Martín, F. P. Zantis, J. Alcaraz Maestre, C. Martinez Rivero, R. Vilar Cortabitarte, J. C. Puras Sánchez, Roberto Rossin, Tiziano Rovelli, F. L. Fabbri, Daniele Fasanella, V. Giordano, Marco Zanetti, S. Goy Lopez, Zoltan Szillasi, C. A. Carrillo Montoya, Balazs Ujvari, Alessandra Cappati, D. Francia Ferrero, F. Gomez Casademunt, J. A. Brochero Cifuentes, S. Lacaprara, L. Barcellan, L. Ciano, Jozsef Molnar, J. M. Barcala, Alicia Calderon, B. Álvarez González, M. Gulmini, J. P. Fernández Ramos, Markus Merschmeyer, and S. Sánchez Navas

Subjects
Physics::Instrumentation and Detectors, Muon, Dose profile, Radiation, Nuclear physics, Colliders, Radiation dose measurements, Particle physics, Accelerator physics, Instrumentation, detectors, LHC, HL-LHC upgrade, CMS, DT, Radiation aging, Irradiation, Physics, Luminosity (scattering theory), Large Hadron Collider, Detector, High voltage, Muon detectors, High Energy Physics::Experiment
Abstract

et al., During the High Luminosity LHC, the Drift Tube chambers installed in the CMS detector need to operate with an integrated dose ten times higher than expected at the LHC due to the increase in integrated luminosity from 300 fb-1 to 3000 fb-1. Irradiations have been performed to assess the performance of the detector under such conditions and to characterize the radiation aging of the detector. The presented analysis focuses on the behaviour of the high voltage currents and the dose measurements needed to extrapolate the results to High Luminosity conditions, using data from the photon irradiation campaign at GIF++ in 2016 as well as the efficiency analysis from the irradiation campaign started in 2017. Although the single-wire loss of high voltage gain observed of 70% is very high, the muon reconstruction efficiency is expected to decrease less than 20% during the full duration of High Luminosity LHC in the areas under highest irradiation.

Published
2020

7. Study of the effects of radiation on the CMS Drift Tubes Muon Detector for the HL-LHC

Author

Paolo Ronchese, J. F. de Trocóniz, I. Gonzalez Caballero, Thomas Hebbeker, A. Álvarez Fernández, Jozsef Molnar, Santiago Folgueras, J. Piedra Gomez, C. Erice Cid, Jacopo Pazzini, J. Sastre, L. Barcellan, M. Presilla, B. Alvarez Gonzalez, D. Dattola, S. Sánchez Navas, Federica Primavera, Alessandra Cappati, G. Cotto, M. Pelliccioni, Anna Teresa Meneguzzo, Marco Cuffiani, Kerstin Hoepfner, V. Giordano, Cédric Prieels, M. Benettoni, CristinaF. Bedoya, B. Chazin Quero, Giovanni Abbiendi, Mara Senghi Soares, Fabio Montecassiano, Bilal Kiani, Gaia Grosso, Marco Zanetti, A. Molinero, J. Fernandez Menendez, J. R. González Fernández, Gy L. Bencze, J. M. Hernandez, Teresa Rodrigo, Irene Bachiller, Silvia Maselli, C. A. Carrillo Montoya, Enrique Calvo, V. Rodríguez Bouza, B. Philipps, Jonas Roemer, Daniel Teyssier, S. Lacaprara, P. De Remigis, Javier Cuevas, G. L. Pinna Angioni, Alessandra Fanfani, J. García Romero, F. Gasparini, S. Ghosh, B. De La Cruz, D. Francia Ferrero, F. Gomez Casademunt, Alberto Benvenuti, Giovanni Mocellin, J. Puerta Pelayo, C. Guandalini, M. C. Fouz, M. Bellato, Andrea Gozzelino, Noemi Beni, Paolo Checchia, E. Torassa, O. Gonzalez Lopez, S. Sanchez Cruz, I. Martín Martín, Matteo Pegoraro, F. P. Zantis, A. Griggio, Fabio Iemmi, Daniele Fasanella, G. Zilizi, J. J. Martínez Morales, S. Lo Meo, C. Martinez Rivero, Carlo Battilana, Nicola Pozzobon, J. M. Vizan Garcia, J. Alcaraz Maestre, S. Ventura, D. D. Redondo Ferrero, Luca Scodellaro, Chiara Mariotti, Carsten Heidemann, F. Rotondo, Maria Cepeda, Alessio Boletti, Balazs Ujvari, Francesca Romana Cavallo, Luigi Guiducci, L. Modenese, Hans Reithler, Gianni Masetti, Maria Isabel Josa, Nicola Amapane, V. Cafaro, J.C. Oller, J. M. Barcala, J. J. Navarrete, Ugo Gasparini, Tiziano Rovelli, G. M. Dallavalle, L. Ciano, S. Goy Lopez, P. J. Fernández Manteca, Pierluigi Zotto, N. Toniolo, Francesco Navarria, Amedeo Staiano, Ignacio Redondo, Franco Gonella, M. Gulmini, Stefano Marcellini, J. P. Fernández Ramos, F. Simonetto, Markus Merschmeyer, A. Bragagnolo, Marina Passaseo, D. Corti, Nicanor Colino, L. C. Blanco Ramos, J. C. Marin, R. Vilar Cortabitarte, Alicia Calderon, J. M. Cela Ruiz, J. C. Puras Sánchez, Roberto Rossin, Á. Navarro Tobar, Roberto Carlin, Dermot Moran, J. A. Brochero Cifuentes, F. L. Fabbri, Zoltan Szillasi, Monica Margoni, R. Isocrate, Daniele Trocino, and Marcos Cerrada

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Particle tracking detectors (Gaseous detectors), FOS: Physical sciences, Radiation, 01 natural sciences, 030218 nuclear medicine & medical imaging, High Energy Physics - Experiment, Nuclear physics, 03 medical and health sciences, High Energy Physics - Experiment (hep-ex), 0302 clinical medicine, Radiation damage to, 0103 physical sciences, Muon spectrometers, Performance of High Energy Physics Detectors, detector materials (gas detectors), Detectors and Experimental Techniques, Instrumentation, physics.ins-det, Mathematical Physics, Physics, Large Hadron Collider, 010308 nuclear & particles physics, hep-ex, Instrumentation and Detectors (physics.ins-det), Particle Physics - Experiment, Muon detector
Abstract

The CMS drift tubes (DT) muon detector, built for withstanding the LHC expected integrated and instantaneous luminosities, will be used also in the High Luminosity LHC (HL-LHC) at a 5 times larger instantaneous luminosity and, consequently, much higher levels of radiation, reaching about 10 times the LHC integrated luminosity. Initial irradiation tests of a spare DT chamber at the CERN gamma irradiation facility (GIF++), at large ($\sim$O(100)) acceleration factor, showed ageing effects resulting in a degradation of the DT cell performance. However, full CMS simulations have shown almost no impact in the muon reconstruction efficiency over the full barrel acceptance and for the full integrated luminosity. A second spare DT chamber was moved inside the GIF++ bunker in October 2017. The chamber was being irradiated at lower acceleration factors, and only 2 out of the 12 layers of the chamber were switched at working voltage when the radioactive source was active, being the other layers in standby. In this way the other non-aged layers are used as reference and as a precise and unbiased telescope of muon tracks for the efficiency computation of the aged layers of the chamber, when set at working voltage for measurements. An integrated dose equivalent to two times the expected integrated luminosity of the HL-LHC run has been absorbed by this second spare DT chamber and the final impact on the muon reconstruction efficiency is under study. Direct inspection of some extracted aged anode wires presented a melted resistive deposition of materials. Investigation on the outgassing of cell materials and of the gas components used at the GIF++ are underway. Strategies to mitigate the ageing effects are also being developed. From the long irradiation measurements of the second spare DT chamber, the effects of radiation in the performance of the DTs expected during the HL-LHC run will be presented., 10 pages, 7 figures, to be published in JINST, editor I. Gonz\'alez Caballero

Published
2019

8. Study of the Effects of Radiation at the CERN Gamma Irradiation Facility on the CMS Drift Tubes Muon Detector for the HL-LHC

Author

A. Álvarez Fernández, S. Sanchez Navas, J. P. Fernández Ramos, S. Sanchez Cruz, Nicola Amapane, G. Grosso, Kerstin Hoepfner, S. Lo Meo, Tiziano Rovelli, J. J. Navarrete, J. Piedra Gomez, Marco Bellato, Marco Cuffiani, J. J. Martínez Morales, V. Rodríguez Bouza, B. Álvarez González, S. Goy Lopez, M. Gulmini, G. L. Pinna Angioni, J. Fernandez Menendez, J. R. González Fernández, J. M. Barcala, G. Cotto, B. De La Cruz, F. Gomez Casademunt, J. Puerta Pelayo, C. Guandalini, Alicia Calderon, Markus Merschmeyer, L. C. Blanco Ramos, Carsten Heidemann, Enrique Calvo, J. García Romero, F. Gasparini, Luigi Guiducci, Silvia Maselli, Daniel Teyssier, Alessandra Fanfani, R. Vilar Cortabitarte, L. Barcellan, Giovanni Abbiendi, J. Sastre, J. C. Puras Sánchez, G. Zilizi, Federica Primavera, Andrea Gozzelino, A. Griggio, Mara Senghi Soares, Paolo Ronchese, Roberto Rossin, J. C. Marin, Alessandra Cappati, Irene Bachiller, O. Gonzalez Lopez, S. Lacaprara, Ugo Gasparini, V. Giordano, D. D. Redondo Ferrero, Sandro Ventura, L. Ciano, Marcos Cerrada, B. Ujvari, Fabio Montecassiano, J. Alcaraz Maestre, Bilal Kiani, Jozsef Molnar, Marco Zanetti, M. C. Fouz, H. Reithler, Gianni Masetti, G. M. Dallavalle, Matteo Presilla, Matteo Pegoraro, Ezio Torassa, C. Erice Cid, Roberto Carlin, S. Gosh, C. A. Carrillo Montoya, A. Navarro Tobar, J. A. Brochero Cifuentes, B. Chazin Quero, Gy L. Bencze, J. M. Hernandez, P. J. Fernández Manteca, J. F. de Troconiz, Pierluigi Zotto, Teresa Rodrigo, F. L. Fabbri, Daniele Fasanella, I. Gonzalez Caballero, Alberto Benvenuti, Zoltan Szillasi, B. Philipps, Luca Scodellaro, Maria Cepeda, Paolo Checchia, Nicola Pozzobon, Amedeo Staiano, Ignacio Redondo, Franco Gonella, D. Francia Ferrero, Stefano Marcellini, A. Bragagnolo, Martino Margoni, T. Hebbeker, Dermot Moran, Ashish Sharma, V. Cafaro, D. Corti, M. Pelliccioni, Anna Teresa Meneguzzo, M. Benettoni, J. M. Vizan Garcia, P. De Remigis, Carlo Battilana, Javier Cuevas, Giovanni Mocellin, R. Isocrate, F. Simonetto, C. Martinez Rivero, J. M. Cela Ruiz, Jacopo Pazzini, Chiara Mariotti, F. Rotondo, Alessio Boletti, Francesca Romana Cavallo, Noemi Beni, Maria Isabel Josa, Jonas Roemer, J.C. Oller, Daniele Trocino, D. Dattola, L. Modenese, N. Toniolo, CristinaF. Bedoya, A. Molinero, Cédric Prieels, Santiago Folgueras, F. P. Zantis, Fabio Iemmi, Francesco Navarria, Marina Passaseo, Nicanor Colino, and I. Martín Martín

Subjects
Nuclear physics, Physics, Muon, Large Hadron Collider, Luminosity (scattering theory), Equivalent dose, Physics::Instrumentation and Detectors, Radioactive source, Detector, High Energy Physics::Experiment, Irradiation, Radiation, Detectors and Experimental Techniques
Abstract

The CMS drift tubes (DT) muon detector, built for withstanding the LHC expected integrated and instantaneous luminosities, will be used also in the High Luminosity LHC (HL-LHC) at a 5 times larger instantaneous luminosity and, consequently, much higher levels of radiation, reaching about 10 times the LHC integrated luminosity. Initial irradiation tests of a spare DT chamber at the CERN gamma irradiation facility (GIF++), at large (~O(100)) acceleration factor, showed aging effects resulting in a degradation of the DT cell performance however, full CMS simulations have shown almost no impact in the muon reconstruction efficiency over the full barrel acceptance and for the full integrated luminosity. A second spare DT chamber was moved inside the GIF++ bunker in October 2017. The chamber was being irradiated at lower acceleration factors, and only 2 out of the 12 layers of the chamber were switched on at working voltage when the radioactive source was active, being the other layers on standby. In this way the other non-aged layers were used as reference and as a precise and unbiased telescope of muon tracks for the efficiency computation of the aged layers of the chamber, when set at working voltage for measurements. An integrated dose equivalent to two times the expected integrated luminosity of the HL-LHC run had been absorbed by this second spare DT chamber and the final impact on the muon reconstruction efficiency was measured. Direct inspection of some extracted aged anode wires presented a deposition of materials. Investigation on the outgassing of cell materials and of the gas components used at the GIF++ are underway. Strategies to mitigate the aging effects are also being developed. From the long irradiation measurements of the second spare DT chamber, the effects of radiation in the performance of the DTs expected during the HL-LHC run will be presented.

Published
2019

9. Performance of the Fully Digital FPGA-Based Front-End Electronics for the GALILEO Array

Author

C. A. Ur, Diego Barrientos, D. Bortolato, D. Bazzacco, P. Cocconi, D. Mengoni, M. Bellato, Enrique Sanchis, M. Gulmini, R. Isocrate, D. Rosso, Vicente González, F. Recchia, Jose Javier Valiente-Dobón, Alberto Pullia, A. Gadea, and N. Toniolo

Subjects
Digital electronics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Preamplifier, business.industry, Computer science, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Energy and Engineering, Control system, AGATA, Electronics, Nuclear Experiment (nucl-ex), Electrical and Electronic Engineering, Galileo (vibration training), business, Field-programmable gate array, Nuclear Experiment, Computer hardware
Abstract

In this work we present the architecture and results of a fully digital Front End Electronics (FEE) read out system developed for the GALILEO array. The FEE system, developed in collaboration with the Advanced Gamma Tracking Array (AGATA) collaboration, is composed of three main blocks: preamplifiers, digitizers and preprocessing electronics. The slow control system contains a custom Linux driver, a dynamic library and a server implementing network services. The digital processing of the data from the GALILEO germanium detectors has demonstrated the capability to achieve an energy resolution of 1.53 per mil at an energy of 1.33 MeV., Comment: 5 pages, 6 figures, preprint version of IEEE Transactions on Nuclear Science paper submitted for the 19th IEEE Real Time Conference

Published
2015
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10. Conceptual design of the AGATA 1$\pi$ array at GANIL

Author

E. Clément, C. Michelagnoli, G. de France, H.J. Li, A. Lemasson, C. Barthe Dejean, M. Beuzard, P. Bougault, J. Cacitti, J.-L. Foucher, G. Fremont, P. Gangnant, J. Goupil, C. Houarner, M. Jean, A. Lefevre, L. Legeard, F. Legruel, C. Maugeais, L. Ménager, N. Ménard, H. Munoz, M. Ozille, B. Raine, J.A. Ropert, F. Saillant, C. Spitaels, M. Tripon, Ph. Vallerand, G. Voltolini, W. Korten, M.-D. Salsac, Ch. Theisen, M. Zielińska, T. Joannem, M. Karolak, M. Kebbiri, A. Lotode, R. Touzery, Ch. Walter, A. Korichi, J. Ljungvall, A. Lopez-Martens, D. Ralet, N. Dosme, X. Grave, N. Karkour, X. Lafay, E. Legay, I. Kojouharov, C. Domingo-Pardo, A. Gadea, R.M. Pérez-Vidal, J.V. Civera, B. Birkenbach, J. Eberth, H. Hess, L. Lewandowski, P. Reiter, A. Nannini, G. De Angelis, G. Jaworski, P. John, D.R. Napoli, J.J. Valiente-Dobón, D. Barrientos, D. Bortolato, G. Benzoni, A. Bracco, S. Brambilla, F. Camera, F.C.L. Crespi, S. Leoni, B. Million, A. Pullia, O. Wieland, D. Bazzacco, S.M. Lenzi, S. Lunardi, R. Menegazzo, D. Mengoni, F. Recchia, M. Bellato, R. Isocrate, F.J. Egea Canet, F. Didierjean, G. Duchêne, R. Baumann, M. Brucker, E. Dangelser, M. Filliger, H. Friedmann, G. Gaudiot, J.-N. Grapton, H. Kocher, C. Mathieu, M.-H. Sigward, D. Thomas, S. Veeramootoo, J. Dudouet, O. Stézowski, C. Aufranc, Y. Aubert, M. Labiche, J. Simpson, I. Burrows, P.J. Coleman-Smith, A. Grant, I.H. Lazarus, P.S. Morrall, V.F.E. Pucknell, A. Boston, D.S. Judson, N. Lalović, J. Nyberg, J. Collado, V. González, I. Kuti, B.M. Nyakó, A. Maj, M. Rudigier, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, AGATA, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Instituto de Fisica Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universitat de València (UV), University of Cologne, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (INFN, Sezione di Firenze), Istituto Nazionale di Fisica Nucleare (INFN), INFN Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Computational Science and Engineering Department [Daresbury] (STFC), Science & Technologie Facilities Council, University of Liverpool, Lund University [Lund], Uppsala University, Department of Electronic Engineering [Universitat Politecnica de Valencia], Universitat Politècnica de València (UPV), Hungarian Academy of Sciences (MTA), Institute of Physics, Polish Academy of Sciences, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Department of Physics, University of Surrey, University of Surrey (UNIS), the EU FEDER funds, MINECO and Generalitat Valenciana, Spain, under the Grants FPA2014-57196-C5, PROMETEOII/2014/019, European Project: 262010,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2010-1,ENSAR(2010), and European Project: 654002,H2020,H2020-INFRAIA-2014-2015,ENSAR2(2016)

Subjects
Nuclear and High Energy Physics, Plunger device, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Cyclotron, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Accelerator Physics and Instrumentation, Tracking (particle physics), 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, Conceptual design, law, 0103 physical sciences, PARIS LaBr3 detector, Neutron detection, Pulse shape analysis, AGATA spectrometer, 010306 general physics, Nuclear Experiment, Instrumentation, Physics, Spectrometer, VAMOS plus plus spectrometer, 010308 nuclear & particles physics, Detector, FATIMA LaBr3 detector, Acceleratorfysik och instrumentering, DIAMANT detector, NEDA detector, Author Keywords:AGATA spectrometer, Physics::Accelerator Physics, AGATA, gamma-ray tracking, GANIL facility
Abstract

The Advanced GAmma Tracking Array (AGATA) has been installed at the GANIL facility, Caen-France. This setup exploits the stable and radioactive heavy-ions beams delivered by the cyclotron accelerator complex of GANIL. Additionally, it benefits from a large palette of ancillary detectors and spectrometers to address in-beam γ-ray spectroscopy of exotic nuclei. The set-up has been designed to couple AGATA with a magnetic spectrometer, charged-particle and neutron detectors, scintillators for the detection of high-energy γ rays and other devices such as a plunger to measure nuclear lifetimes. In this paper, the design and the mechanical characteristics of the set-up are described. Based on simulations, expected performances of the AGATA l π array are presented. Title in WoS: Conceptual design of the AGATA 1 pi array at GANIL

Published
2017
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11. Isospin character of low-lying pygmy dipole states in 208Pb via inelastic scattering of 17O ions

Author

F C L, Crespi, A, Bracco, R, Nicolini, D, Mengoni, L, Pellegri, E G, Lanza, S, Leoni, A, Maj, M, Kmiecik, R, Avigo, G, Benzoni, N, Blasi, C, Boiano, S, Bottoni, S, Brambilla, F, Camera, S, Ceruti, A, Giaz, B, Million, A I, Morales, V, Vandone, O, Wieland, P, Bednarczyk, M, Ciemała, J, Grebosz, M, Krzysiek, K, Mazurek, M, Zieblinski, D, Bazzacco, M, Bellato, B, Birkenbach, D, Bortolato, E, Calore, B, Cederwall, L, Charles, G, de Angelis, P, Désesquelles, J, Eberth, E, Farnea, A, Gadea, A, Görgen, A, Gottardo, R, Isocrate, J, Jolie, A, Jungclaus, N, Karkour, W, Korten, R, Menegazzo, C, Michelagnoli, P, Molini, D R, Napoli, A, Pullia, F, Recchia, P, Reiter, D, Rosso, E, Sahin, M D, Salsac, B, Siebeck, S, Siem, J, Simpson, P-A, Söderström, O, Stezowski, Ch, Theisen, C, Ur, and J J, Valiente-Dobón

Abstract

The properties of pygmy dipole states in 208Pb were investigated using the 208Pb(17O, 17O'γ) reaction at 340 MeV and measuring the γ decay with high resolution with the AGATA demonstrator array. Cross sections and angular distributions of the emitted γ rays and of the scattered particles were measured. The results are compared with (γ, γ') and (p, p') data. The data analysis with the distorted wave Born approximation approach gives a good description of the elastic scattering and of the inelastic excitation of the 2+ and 3- states. For the dipole transitions a form factor obtained by folding a microscopically calculated transition density was used for the first time. This has allowed us to extract the isoscalar component of the 1- excited states from 4 to 8 MeV.

Published
2014

12. Coupling a CLOVER detector array withth e PRISMA magneticspectrometer

Author

A. Gadea, D. R. Napoli, G. de Angelis, R. Menegazzo, A. M. Stefanini, L. Corradi, M. Axiotis, L. Berti, E. Fioretto, T. Kroell, A. Latina, N. Marginean, G. Maron, T. Martinez, D. Rosso, C. Ru su, N. Toniolo, S. Szilner, M. Trotta, D. Bazzacco, S. Beghini, M. Bellato, F. Brandolini, E. Farnea, R. Isocrate, S. M. Lenzi, S. Lunardi, G. Montagnoli, P. Pavan, C. Rossi Alvarez, F. Scarlassara, C. Ur, N. Blasi, A. Bracco, F. Camera, S. Leoni, B. Million, M. Pignanelli, G. Pollarolo, G. Inglima, M. La Commara, D. Pierroutsakou, M. Romoli, M. Sandoli, P. G. Bizzeti, A. M. Bizzeti Sona, G. Lo Bianco, C. M. Petrache, A. Zucchiatti, P. Cocconi, B. Quintana, C.h. Beck, D. Cu rien, G. Du chˆene, F. Haas, P. Medina, P. Papka, J. Du rell, S. J. Freeman, A. Smith, B. Varley, K. Fayz, V. Pucknell, J. Simpson, W. Gelletly, P. Regan, the EUROBALL, PRISMA 2 Collaborations, DE ROSA, ANTONIO, LA RANA, GIOVANNI, A., Gadea, D. R., Napoli, G., de Angeli, R., Menegazzo, A. M., Stefanini, L., Corradi, M., Axioti, L., Berti, E., Fioretto, T., Kroell, A., Latina, N., Marginean, G., Maron, T., Martinez, D., Rosso, C., Ru su, N., Toniolo, S., Szilner, M., Trotta, D., Bazzacco, S., Beghini, M., Bellato, F., Brandolini, E., Farnea, R., Isocrate, S. M., Lenzi, S., Lunardi, G., Montagnoli, P., Pavan, C., Rossi Alvarez, F., Scarlassara, C., Ur, N., Blasi, A., Bracco, F., Camera, S., Leoni, B., Million, M., Pignanelli, G., Pollarolo, DE ROSA, Antonio, G., Inglima, M., La Commara, LA RANA, Giovanni, D., Pierroutsakou, M., Romoli, M., Sandoli, P. G., Bizzeti, A. M., Bizzeti Sona, G., Lo Bianco, C. M., Petrache, A., Zucchiatti, P., Cocconi, B., Quintana, Beck, C. h., D., Cu rien, G., Du chˆene, F., Haa, P., Medina, P., Papka, J., Du rell, S. J., Freeman, A., Smith, B., Varley, K., Fayz, V., Pucknell, J., Simpson, W., Gelletly, P., Regan, The, Euroball, and Prisma, 2 Collaborations

Subjects
X- and γ-ray spectroscopy, Solid-state detector
Abstract

Following the commissioning of the PRISMA large-acceptance spectrometer, installed at the Laboratori Nazionali di Legnaro (LNL), an international nuclear-structure collaboration has started to develop a large γ-ray setup to be installed in the target position of the spectrometer. The array is based on the EUROBALL composite CLOVER detectors. In this contribution the CLOVER detector array is described and its expected performance figures discussed. This new setup, by using the high-intensity heavyion beams provided by the LNL ALPI linac, will push the study of nuclear structure towards moderately neutron-rich nuclei by means of quasi-elastic and deep inelastic reactions.

Published
2004

13. Towards the determination of superdeformation in 42Ca

Author

Dave Cullen, K {Hadynska-Klek}, P J {Napiorkowski}, A {Maj}, F {Azaiez}, M {Kicinska-Habior}, J J {Valiente-Dobon}, Angelis, G., T {Abraham}, Anil Kumar, G., Q, B., D {Bazzacco}, M {Bellato}, D {Bortolato}, P {Bednarczyk}, G {Benzoni}, L {Berti}, B {Birkenbach}, B {Bruyneel}, S {Brambilla}, F {Camera}, J {Chavas}, M {Ciemala}, P {Cocconi}, P {Coleman-Smith}, A {Colombo}, A {Corsi}, F C L {Crespi}, D M {Cullen}, A {Czermak}, P {Desesquelles}, B {Dulny}, J {Eberth}, E {Farnea}, B {Fornal}, S {Franchoo}, A {Gadea}, A {Giaz}, A {Gottardo}, X {Grave}, J {Grebosz}, M {Gulmini}, T {Habermann}, R {Isocrate}, J {Iwanicki}, G {Jaworski}, A {Jungclaus}, N {Karkour}, M {Kmiecik}, D {Karpinski}, M {Kisielinski}, N {Kondratyev}, A {Korichi}, M {Komorowska}, M {Kowalczyk}, W {Korten}, M {Krzysiek}, G {Lehaut}, S {Leoni}, A {Lopez-Martens}, S {Lunardi}, G {Maron}, K {Mazurek}, R {Menegazzo}, D {Mengoni}, E {Merchan}, W {Meczynski}, C {Michelagnoli}, J {Mierzejewski}, B {Million}, P {Molini}, S {Myalski}, D R {Napoli}, R {Nicolini}, M {Niikura}, A {Obertelli}, S F {Ozmen}, M {Palacz}, A {Pullia}, G {Rampazzo}, F {Recchia}, N {Redon}, P {Reiter}, D {Rosso}, K {Rusek}, E {Sahin}, D, M., A, P., J {Srebrny}, I {Stefan}, O {Stezowski}, J {Styczen}, C h {Theisen}, N {Toniolo}, C A {Ur}, V {Vandone}, R {Wadsworth}, B {Wasilewska}, A {Wiens}, K {Wrzosek-Lipska}, M {Zielinska}, and M {Zieblinski}

Subjects
Coulomb excitation, Electromagnetic structure, Ground-state band, Low-lying state, Quadrupole deformations, Super-deformation, Superdeformed band, Physical properties, Physics, Calcium, Superdeformed band, Physical properties, Ground-state band, Coulomb excitation, Physics, Electromagnetic structure, Low-lying state, Quadrupole deformations, Super-deformation
Published
2013

14. In-beam experiment with the gamma-ray tracking detector MARS

Author

A. Geraci, G. Ripamonti, Th. Kröll, D. Bazzacco, R. Venturelli, M. Nespolo, B. Quintana Arnés, C. A. Ur, M. Bellato, R. Isocrate, Ch. Manea, R. Menegazzo, P. Pavan, C. Rossi Alvarez, E. Farnea, A. Gadea, D. Rosso, P. Spolaore, F. Camera, and B. Million

Published
2008

15. In-beam experiment with the gamma-ray tracking detector MARS

Author

E. Farnea, Alberto Pullia, M. Descovich, P. Pavan, C. Rossi Alvarez, Benedicte Million, F. Camera, Angelo Geraci, M. Nespolo, B. Quintana Arnés, D. Rosso, O. Wieland, D. Bazzacco, P. Spolaore, C. A. Ur, Ch. Manea, Giancarlo Ripamonti, R. Venturelli, A. Gadea, Roberto Menegazzo, R. Isocrate, M. Bellato, and T. Kröll

Subjects
Physics, Nuclear and High Energy Physics, sezele, Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, Coulomb excitation, Mars Exploration Program, Tracking (particle physics), Particle detector, Semiconductor detector, symbols.namesake, Optics, symbols, business, Instrumentation, Doppler effect, Beam (structure)
Abstract

The feasibility of the entire process of γ -ray tracking is demonstrated experimentally for the first time. The accuracy of the results is verified by the capability to carry out a Doppler correction of γ -rays emitted in flight. The resolution of the 846.8 keV transition detected with the MARS detector after Coulomb excitation of a 56 Fe beam could be improved from approximately 16 up to 4.6 keV (FWHM). This result corresponds to an obtained position resolution of about 6 mm (FWHM).

Published
2008

16. A two-level pattern trigger for the MAGIC telescope

Author

P. Sartori, A. Saggion, D. Corti, Riccardo Paoletti, L. Peruzzo, Ciro Bigongiari, M. Bettini, R. Isocrate, Nicola Turini, Mosè Mariotti, Denis Bastieri, and Mario Meucci

Subjects
Physics, Nuclear and High Energy Physics, Pixel, Cherenkov telescopes, Gamma astronomy, Pattern recognition, Trigger, Astrophysics, Cherenkov Telescope Array, Particle detector, IMAGING CHERENKOV DETECTOR, law.invention, Telescope, Pulse circuits, law, Electronic design, MAGIC (telescope), TRIGGER, Instrumentation, Cherenkov radiation
Abstract

Strong scientific motivation are pushing the second generation of ground base Cherenkov telescopes to lower as much as possible their energy threshold. MAGIC will be the biggest single telescope, in terms of collection area (250 m 2 ), foreseen for the second-half of 2001. The large collection area, the newphotodetector and the electronic design will allow the telescope to lower the energy threshold below 30 GeV. For this telescope a two-level pattern trigger is designed to work in severe high pixel rate. The MAGIC trigger architecture and its implementation is presented. # 2001 Elsevier Science B.V. All rights reserved. PACS: 95.55.Ka

Published
2001

17. First observation of proton emission from [sup 117]La

Author

Z. H. Liu, R. Isocrate, F. Scarlassara, M. Ruan, A. Guglielmetti, M. Ivascu, A. Dal Bello, P. Bednarczyk, C. Boiano, F. Soramel, L. Müller, C. Broude, Z. C. Li, Alberto Andrighetto, R. Bonetti, Gian Luca Poli, L. Stroe, F. Malerba, and C. Signorini

Subjects
Physics, Nuclear physics, Recoil, Silicon, chemistry, Detector, chemistry.chemical_element, Neutron, Atomic physics, Proton emission, Ground state, Beam (structure), Linear particle accelerator
Abstract

We report the first measurement, at the XTU Tandem+LINAC accelerator of the Laboratori Nazionali di Legnaro, of the decay of the very neutron deficient nucleus 117La using a 310 MeV 58Ni beam on a 64Zn target; the 117La nucleus was populated via the (p, 4n) evaporation channel. The Recoil Mass Spectrometer (RMS) was used to select M/q=117/30 recoils that were implanted in a (40×40) mm2 Double Sided Silicon Strip Detector (DSSD) detector. The analysis has revealed that 117La decays to 116Ba via proton emission with Ep=(783±6)keV and T1/2=(20±5) ms. From this result deformation parameters of β2=0.3 and β4=0.1 have been deduced for the 117La ground state which was assigned to Jπ=3/2+.

Published
2000
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18. [Untitled]

Author

P. Cocconi, G. Rampazzo, P. Molini, Fernando Scarlassara, Z. Podolyáka, W. Gelletly, D. Montanari, R. Isocrate, F. Recchia, István Kuti, C. Fanin, P. H. Regan, G. de Angelis, D. R. Napoli, B. Berti, Pushpendra Singh, N. Kondratyev, G. Montagnioli, A. Gadea, N. Toniolo, E. Farnea, T. Mijatović, S. Szilner, C. Michelagnoli, M. Bowry, M. Bunce, M. Bellato, C. A. Ur, Mohammad Nakhostin, D. Bortolato, D. Pellegrini, L. Corradi, P. Reiter, P. J. R. Mason, J. J. Valiente-Dobón, V. Anagnostatou, D. Mengoni, A. Colombo, E. Fioretto, E. Sahin, R.S. Kempley, D. Rosso, Zs. Dombrádi, D. Bazzacco, A. Gottardo, S. Ketenci, N. Al-Dahan, and A. M. Stefanini

Subjects
Physics, Nuclear physics, Order of reaction, General Physics and Astronomy
Published
2011
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19. High resolution γ-ray spectrometry using GALILEO array

Author

D. .. Testov, J. J. Valiente-Dobon, D. .. Mengoni, F. .. Recchia, A. .. Goasduff, A. .. Boso, S. .. Lenzi, G. .. De Angelis, S. .. Bakes, C. .. Boiano, B. .. Cederwall, G. .. Colucci, M. .. Cicerchia, P. .. Colovic, F. .. Didierjean, M. .. Doncel, J. A. Duenas, F. .. Galtarossa, A. .. Gozzelino, K. .. Hadynska-Klek, R. .. Isocrate, G. .. Jaworski, P. R. John, H. .. Liu, S. .. Lunardi, R. .. Menegazzo, A. .. Mentana, V. .. Modamio, A. .. Nannini, D. R. Napoli, M. .. Palacz, G. .. Pasqualato, M. .. Rocchini, S. .. Riccetto, B. .. Saygi, E. .. Sahin, M. .. Siciliano, Yu. .. Sobolev, and S. .. Szilner

Subjects
γ-ray spectroscopy, γ-ray spectrometer, nuclear structure, nuclearstate lifetime, Physics, QC1-999
Abstract

The GALILEO γ -ray spectrometer has been constructed at the Legnaro National Laboratory of INFN (LNL-INFN). It can be coupled to advanced ancillary devices which allows nuclear structure studies employing the variety of in-beam γ -ray spectroscopy methods. Such studies benefit from reactions induced by the intense stable beams delivered by the Tandem-ALPI-PIAVE accelerator complex and by the radioactive beams which will be provided by the SPES facility. In this paper we outline two experiments performed within the experimental campaign at GALILEO coupled to the EUCLIDES Si-ball and the Neutron Wall array. The first one was aimed at spectroscopic studies in A=31 mirror nuclei and the second one at measurements of lifetimes of excited states in nuclei in the vicinity of 100 Sn.

Published
2021
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20. Superdeformed and Triaxial States in ^{42}Ca.

Author

Hadyńska-Klȩk K, Napiorkowski PJ, Zielińska M, Srebrny J, Maj A, Azaiez F, Valiente Dobón JJ, Kicińska-Habior M, Nowacki F, Naïdja H, Bounthong B, Rodríguez TR, de Angelis G, Abraham T, Anil Kumar G, Bazzacco D, Bellato M, Bortolato D, Bednarczyk P, Benzoni G, Berti L, Birkenbach B, Bruyneel B, Brambilla S, Camera F, Chavas J, Cederwall B, Charles L, Ciemała M, Cocconi P, Coleman-Smith P, Colombo A, Corsi A, Crespi FC, Cullen DM, Czermak A, Désesquelles P, Doherty DT, Dulny B, Eberth J, Farnea E, Fornal B, Franchoo S, Gadea A, Giaz A, Gottardo A, Grave X, Grȩbosz J, Görgen A, Gulmini M, Habermann T, Hess H, Isocrate R, Iwanicki J, Jaworski G, Judson DS, Jungclaus A, Karkour N, Kmiecik M, Karpiński D, Kisieliński M, Kondratyev N, Korichi A, Komorowska M, Kowalczyk M, Korten W, Krzysiek M, Lehaut G, Leoni S, Ljungvall J, Lopez-Martens A, Lunardi S, Maron G, Mazurek K, Menegazzo R, Mengoni D, Merchán E, Mȩczyński W, Michelagnoli C, Mierzejewski J, Million B, Myalski S, Napoli DR, Nicolini R, Niikura M, Obertelli A, Özmen SF, Palacz M, Próchniak L, Pullia A, Quintana B, Rampazzo G, Recchia F, Redon N, Reiter P, Rosso D, Rusek K, Sahin E, Salsac MD, Söderström PA, Stefan I, Stézowski O, Styczeń J, Theisen Ch, Toniolo N, Ur CA, Vandone V, Wadsworth R, Wasilewska B, Wiens A, Wood JL, Wrzosek-Lipska K, and Ziȩbliński M

Abstract

Shape parameters of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in ^{42}Ca were determined from E2 matrix elements measured in the first low-energy Coulomb excitation experiment performed with AGATA. The picture of two coexisting structures is well reproduced by new state-of-the-art large-scale shell model and beyond-mean-field calculations. Experimental evidence for superdeformation of the band built on 0_{2}^{+} has been obtained and the role of triaxiality in the A∼40 mass region is discussed. Furthermore, the potential of Coulomb excitation as a tool to study superdeformation has been demonstrated for the first time.

Published
2016
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21. Isospin character of low-lying pygmy dipole states in 208Pb via inelastic scattering of 17O ions.

Author

Crespi FC, Bracco A, Nicolini R, Mengoni D, Pellegri L, Lanza EG, Leoni S, Maj A, Kmiecik M, Avigo R, Benzoni G, Blasi N, Boiano C, Bottoni S, Brambilla S, Camera F, Ceruti S, Giaz A, Million B, Morales AI, Vandone V, Wieland O, Bednarczyk P, Ciemała M, Grebosz J, Krzysiek M, Mazurek K, Zieblinski M, Bazzacco D, Bellato M, Birkenbach B, Bortolato D, Calore E, Cederwall B, Charles L, de Angelis G, Désesquelles P, Eberth J, Farnea E, Gadea A, Görgen A, Gottardo A, Isocrate R, Jolie J, Jungclaus A, Karkour N, Korten W, Menegazzo R, Michelagnoli C, Molini P, Napoli DR, Pullia A, Recchia F, Reiter P, Rosso D, Sahin E, Salsac MD, Siebeck B, Siem S, Simpson J, Söderström PA, Stezowski O, Theisen Ch, Ur C, and Valiente-Dobón JJ

Abstract

The properties of pygmy dipole states in 208Pb were investigated using the 208Pb(17O, 17O'γ) reaction at 340 MeV and measuring the γ decay with high resolution with the AGATA demonstrator array. Cross sections and angular distributions of the emitted γ rays and of the scattered particles were measured. The results are compared with (γ, γ') and (p, p') data. The data analysis with the distorted wave Born approximation approach gives a good description of the elastic scattering and of the inelastic excitation of the 2+ and 3- states. For the dipole transitions a form factor obtained by folding a microscopically calculated transition density was used for the first time. This has allowed us to extract the isoscalar component of the 1- excited states from 4 to 8 MeV.

Published
2014
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22. Coulomb energy differences in t = 1 mirror rotational bands in (50)Fe and (50)Cr.

Author

Lenzi SM, Mărginean N, Napoli DR, Ur CA, Zuker AP, de Angelis G, Algora A, Axiotis M, Bazzacco D, Belcari N, Bentley MA, Bizzeti PG, Bizzeti-Sona A, Brandolini F, von Brentano P, Bucurescu D, Cameron JA, Chandler C, De Poli M, Dewald A, Eberth H, Farnea E, Gadea A, Garces-Narro J, Gelletly W, Grawe H, Isocrate R, Joss DT, Kalfas CA, Klug T, Lampman T, Lunardi S, Martínez T, Martínez-Pinedo G, Menegazzo R, Nyberg J, Podolyak Z, Poves A, Ribas RV, Rossi Alvarez C, Rubio B, Sánchez-Solano J, Spolaore P, Steinhardt T, Thelen O, Tonev D, Vitturi A, von Oertzen W, and Weiszflog M

Abstract

Gamma rays from the N = Z-2 nucleus (50)Fe have been observed, establishing the rotational ground state band up to the state J(pi) = 11+ at 6.994 MeV excitation energy. The experimental Coulomb energy differences, obtained by comparison with the isobaric analog states in its mirror (50)Cr, confirm the qualitative interpretation of the backbending patterns in terms of successive alignments of proton and neutron pairs. A quantitative agreement with experiment has been achieved by exact shell model calculations, incorporating the differences in radii along the yrast bands, and properly renormalizing the Coulomb matrix elements in the pf model space.

Published
2001
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