用于ALICE TPC升级的全尺寸4-GEM原型的粒子鉴别研究
仪器与探测器
2018-07-16 v2
摘要
大型时间投影室是CERN LHC上ALICE实验中进行径迹重建和带电粒子鉴别的主要装置。在2019/20年第二次长停机之后，LHC将提供以约50 kHz相互作用率碰撞的Pb束流，这约为TPC当前读出速率的50倍。这将显著提高对被视为表征此类碰撞中产生的QCD物质的关键观测量的稀有探针的灵敏度。为充分利用此亮度，目前使用的门控多丝正比室将被替换。该升级依赖于采用气体电子倍增体技术的连续运行读出探测器，以通过测量电离比能损d/d保持粒子鉴别性能。2014年组装了一个全尺寸读出室原型，其放大级由四层GEM箔组成。该原型的性能在CERN PS的测试束流活动中进行了评估。d/d分辨率既符合当前运行的基于MWPC的读出室性能，也符合ALICE TPC升级计划的高要求。对读出系统的详细模拟能够再现数据。
引用
@article{arxiv.1805.03234,
title = {Particle identification studies with a full-size 4-GEM prototype for the ALICE TPC upgrade},
author = {M. M. Aggarwal and Z. Ahammed and S. Aiola and J. Alme and T. Alt and W. Amend and A. Andronic and V. Anguelov and H. Appelshäuser and M. Arslandok and R. Averbeck and M. Ball and G. G. Barnaföldi and E. Bartsch and R. Bellwied and G. Bencedi and M. Berger and N. Bialas and P. Bialas and L. Bianchi and S. Biswas and L. Boldizsár and L. Bratrud and P. Braun-Munzinger and M. Bregant and C. L. Britton and E. J. Brucken and H. Caines and A. J. Castro and S. Chattopadhyay and P. Christiansen and L. G. Clonts and T. M. Cormier and S. Das and S. Dash and A. Deisting and S. Dittrich and A. K. Dubey and R. Ehlers and M. Engel and F. Erhardt and N. B. Ezell and L. Fabbietti and U. Frankenfeld and J. J. Gaardhøje and C. Garabatos and P. Gasik and Á. Gera and P. Ghosh and S. K. Ghosh and P. Glässel and O. Grachov and A. Grein and T. Gunji and H. Hamagaki and G. Hamar and J. W. Harris and P. Hauer and J. Hehner and E. Hellbär and H. Helstrup and T. E. Hilden and B. Hohlweger and M. Ivanov and M. Jung and D. Just and E. Kangasaho and R. Keidel and B. Ketzer and S. A. Khan and S. Kirsch and T. Klemenz and S. Klewin and A. G. Knospe and M. Kowalski and L. Kumar and R. Lang and R. Langoy and L. Lautner and F. Liebske and J. Lien and C. Lippmann and H. M. Ljunggren and W. J. Llope and S. Mahmood and T. Mahmoud and R. Majka and P. Malzacher and A. Marín and C. Markert and S. Masciocchi and A. Mathis and A. Matyja and M. Meres and D. L. Mihaylov and D. Miskowiec and J. Mitra and T. Mittelstaedt and T. Morhardt and J. Mulligan and R. H. Munzer and K. Münning and M. G. Munhoz and S. Muhuri and H. Murakami and B. K. Nandi and H. Natal da Luz and C. Nattrass and T. K. Nayak and R. A. Negrao De Oliveira and M. Nicassio and B. S. Nielsen and L. Oláh and A. Oskarsson and J. Otwinowski and K. Oyama and G. Paić and R. N. Patra and V. Peskov and M. Pikna and L. Pinsky and M. Planinic and M. G. Poghosyan and N. Poljak and F. Pompei and S. K. Prasad and C. A. Pruneau and J. Putschke and S. Raha and J. Rak and J. Rasson and V. Ratza and K. F. Read and A. Rehman and R. Renfordt and T. Richert and K. Røed and D. Röhrich and T. Rudzki and R. Sahoo and S. Sahoo and P. K. Sahu and J. Saini and B. Schaefer and J. Schambach and S. Scheid and C. Schmidt and H. R. Schmidt and N. V Schmidt and H. Schulte and K. Schweda and I. Selyuzhenkov and N. Sharma and D. Silvermyr and R. N. Singaraju and B. Sitar and N. Smirnov and S. P. Sorensen and F. Sozzi and J. Stachel and E. Stenlund and P. Strmen and I. Szarka and G. Tambave and K. Terasaki and A. Timmins and K. Ullaland and A. Utrobicic and D. Varga and R. Varma and A. Velure and V. Vislavicius and S. Voloshin and B. Voss and D. Vranic and J. Wiechula and S. Winkler and J. Wikne and B. Windelband and C. Zhao},
journal= {arXiv preprint arXiv:1805.03234},
year = {2018}
}
备注
Submitted to NIM A