论文标题
基于MPGD的光子检测器，用于升级Compass Rich-1及以后的升级
MPGD-based photon detectors for the upgrade of COMPASS RICH-1 and beyond
论文作者
论文摘要
指南针是旨在研究强子结构和光谱法的CERN SPS的固定目标实验。大型气态戒指成像Cherenkov Counter，Rich-1提供了$ 3 $至55 gev/c $的势头识别。为了应对Compass新物理计划所面临的挑战，通过用新开发的基于MPGD的光子检测器代替了四个基于MWPC的光子检测器，从而升级了Rich-1。新型探测器的结构是两层Thgem和一个微羊膜的混合组合。第一个Thgem的顶部用CSI涂层，充当反射性照相。阳极以电容为基于APV-25的读数的垫子进行分割。新的混合探测器已在2016年的指南针数据获取期间进行了委托，并在2017年运行期间稳定运行。在本文的设计中，讨论了Compass Rich-1的新型光子检测器的构造，操作和性能方面。
COMPASS is a fixed target experiment at CERN SPS aimed to study hadron structure and spectroscopy. Hadron identification in the momentum range between $3$ and $55 GeV/c$ is provided by a large gaseous Ring Imaging Cherenkov Counter, RICH-1. To cope with the challenges imposed by the new physics program of COMPASS, RICH-1 has been upgraded by replacing four MWPC-based photon detectors with newly developed MPGD-based photon detectors. The architecture of the novel detectors is a hybrid combination of two layers of THGEMs and a Micromegas. The top of the first THGEM is coated with CsI acting as a reflective photo-cathode. The anode is segmented in pads capacitively coupled to the APV-25 based readout. The new hybrid detectors have been commissioned during the 2016 COMPASS data taking and stably operated during the 2017 run. In this paper design, construction, operation and performance aspects of the novel photon detectors for COMPASS RICH-1 are discussed.
