T2K 近探测器 ND280 的电磁量能器
仪器与探测器
2013-11-06 v2
摘要
T2K 实验研究从 J-PARC 加速器综合体到超级神冈探测器之间的离轴缪子中微子束的振荡。实验特别强调通过观测次主导的缪子中微子到电子中微子振荡出现的电子中微子来测量混合角 theta_13，并寻找轻子部分的 CP 破坏。该实验包含一个复杂的离轴近探测器 ND280，位于中微子产生靶下游 280 m 处，旨在测量中微子束的性质并更好地理解几 GeV 以下能标的中微子相互作用。利用 ND280 收集的数据研究振荡前的带电流和中性流中微子相互作用率及运动学，以减少远探测器振荡测量的不确定性。近探测器的一个关键组成部分是 ND280 电磁量能器 (ECal)，它由夹在铅板之间的活性闪烁体棒组成，并通过多像素光子计数器 (MPPC) 进行读出。ECal 对于中性粒子的重建和带电粒子种类的识别至关重要。ECal 环绕着 Pi-0 探测器 (P0D) 和 ND280 的径迹区域，并被封装在前 UA1/NOMAD 偶极磁铁内。本文描述了 ECal 的设计、建造和组装，以及其构成材料。讨论了电子学和数据采集 (DAQ) 系统，并描述了基于粒子束、宇宙线、校准系统和 T2K 数据测量得出的 ECal 模块性能。
引用
@article{arxiv.1308.3445,
title = {The Electromagnetic Calorimeter for the T2K Near Detector ND280},
author = {D. Allan and C. Andreopoulos and C. Angelsen and G. J. Barker and G. Barr and S. Bentham and I. Bertram and S. Boyd and K. Briggs and R. G. Calland and J. Carroll and S. L. Cartwright and A. Carver and C. Chavez and G. Christodoulou and J. Coleman and P. Cooke and G. Davies and C. Densham and F. Di Lodovico and J. Dobson and T. Duboyski and T. Durkin and D. L. Evans and A. Finch and M. Fitton and F. C. Gannaway and A. Grant and N. Grant and S. Grenwood and P. Guzowski and D. Hadley and M. Haigh and P. F. Harrison and A. Hatzikoutelis and T. D. J. Haycock and A. Hyndman and J. Ilic and S. Ives and A. C. Kaboth and V. Kasey and L. Kellet and M. Khaleeq and G. Kogan and L. L. Kormos and M. Lawe and T. B. Lawson and C. Lister and R. P. Litchfield and M. Lockwood and M. Malek and T. Maryon and P. Masliah and K. Mavrokoridis and N. McCauley and I. Mercer and C. Metelko and B. Morgan and J. Morris and A. Muir and M. Murdoch and T. Nicholls and M. Noy and H. M. O'Keeffe and R. A. Owen and D. Payne and G. F. Pearce and J. D. Perkin and E. Poplawska and R. Preece and W. Qian and P. Ratoff and T. Raufer and M. Raymond and M. Reeves and D. Richards and M. Rooney and R. Sacco and S. Sadler and P. Schaack and M. Scott and D. I. Scully and S. Short and M. Siyad and R. Smith and B. Still and P. Sutcliffe and I. J. Taylor and R. Terri and L. F. Thompson and A. Thorley and M. Thorpe and C. Timis and C. Touramanis and M. A. Uchida and Y. Uchida and A. Vacheret and J. F. VanSchalkwyk and O. Veledar and A. V. Waldron and M. A. Ward and G. P. Ward and D. Wark and M. O. Wascko and A. Weber and N. West and L. H. Whitehead and C. Wilkinson and J. R. Wilson},
journal= {arXiv preprint arXiv:1308.3445},
year = {2013}
}
备注
45 pages, 29 PDF figures. This version is accepted for publication in JINST. It includes minor changes as recommended by the referee. In particular, a bit of further information and explanation is added to several sections