Crystals for high-energy calorimetry in extreme environments
Francesca Nessi-Tedaldi
备注:
To be published in Proc. of the Meeting of the Division of Particles and Fields of the American Physical Society, DPF2004 (Riverside, USA, August 26th to 31st, 2004)
Crystals are used as a homogeneous calorimetric medium in many high-energy physics experiments. For some experiments, performance has to be ensured in very difficult operating conditions, like a high radiation environment, very large particle fluxes, high collision rates, placing constraints on response and readout time. An overview is presented of recent achievements in the field, with particular attention given to the performance of Lead Tungstate (PWO) crystals exposed to high particle fluxes.
Cherenkov and scintillation light separation in BGO and BSO crystals coupled to SiPMs for dual-readout electromagnetic calorimetry at future colliders
Università degli Studi di Napoli Federico II(那不勒斯费德里科二世大学);Istituto Nazionale di Fisica Nucleare, Sezione di Napoli(意大利国家核物理研究所,那不勒斯分部);Università degli Studi di Napoli Parthenope(那不勒斯帕尔特诺佩大学);European Center for the Nuclear Research(欧洲核子研究中心);Istituto Nazionale di Fisica Nucleare, Sezione di Milano-Bicocca(意大利国家核物理研究所,米兰比可卡分部);Dipartimento di Fisica e Geologia, Università degli Studi di Perugia(佩鲁贾大学物理与地质学系);Istituto Nazionale di Fisica Nucleare, Sezione di Perugia(意大利国家核物理研究所,佩鲁贾分部);Scuola Superiore Meridionale(南方高等学院)
Cryogenic measurement of the optical absorption coefficient in sapphire crystals at 1.064(micro)m for the Large-scale Cryogenic Gravitational wave Telescope
Results on damage induced by high-energy protons in LYSO calorimeter crystals
掺铈的正硅酸镥钇(LYSO:Ce)作为一种明亮的结晶,是在强电离辐射场和大的高能强子注量中应用量热法的候选者,正如欧洲核子研究中心大型强子对撞机计划中的高亮度升级后所预期的那样。在那里,质子-质子碰撞将在量热计的大快度区域产生高达~ 5E 14/cm ^2的快强子注量。研究了LYSO:Ce在不同注量的24 GeV/c质子辐照后的性能。测量的光传输作为质子注量的函数的变化,并随着时间的推移,由于在室温下的自发恢复的演变进行了研究。在所述环境中,材料的活化也将是一个问题。通过测量和FLUKA模拟,研究了LYSO引起的环境剂量及其随时间的演化,并与其他闪烁晶体进行了比较。
Conceptual Design of a Novel Highly Granular Crystal Electromagnetic Calorimeter for Future Higgs Factories
Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所);State Key Laboratory of Particle Detection and Electronics(粒子探测与电子学国家重点实验室);University of Chinese Academy of Sciences(中国科学院大学);China Center of Advanced Science and Technology(中国高等科学技术中心);Institute of Nuclear and Particle Physics, School of Physics and Astronomy, Shanghai Jiao Tong University(上海交通大学物理与天文学院核物理与粒子物理研究所);Tsung-Dao Lee Institute, Shanghai Jiao Tong University(上海交通大学李政道研究所);National Key Laboratory of Dark Matter Physics, Shanghai Key Laboratory for Particle Physics and Cosmology, Key Laboratory for Particle Astrophysics and Cosmology (MoE)(暗物质物理全国重点实验室、粒子物理与宇宙学上海市重点实验室、粒子天体物理 cosmology 教育部重点实验室)