The HERMES dual-radiator ring imaging Cherenkov detector
The HERMES dual-radiator ring imaging Cherenkov detector
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DOI：
10.1016/s0168-9002(01)00932-9
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发表时间：
2001-04
影响因子：
1.4
通讯作者：
N. Akopov;E. al.
中科院分区：
文献类型：
--
作者：
N. Akopov;E. al.
描述了双辐射器环形成像切伦科夫（RICH）探测器的结构和用途。该仪器是为DESY的爱马仕实验开发的，该实验强调半包容性深度非弹性散射的测量。它提供了粒子识别的π介子，K介子和质子的动量范围从2到15 GeV，这是必不可少的这些研究。该仪器使用两个散热器，C4F10，一种重碳氟化合物气体，和一堵二氧化硅气凝胶瓷砖墙。气凝胶在RICH检测器中的使用直到最近才随着透明、大、均质和疏水气凝胶的开发而成为可能。一个轻量级的镜子是使用一种新的完善的技术，使树脂涂层的碳纤维表面的光学质量。光子探测器由1934个光电倍增管（PMT）组成，每个探测器的一半，保持在一个软钢矩阵，以提供屏蔽对主光谱仪磁铁的剩余磁场。
The construction and use of a dual radiator Ring Imaging Cherenkov (RICH) detector is described. This instrument was developed for the HERMES experiment at DESY which emphasises measurements of semi-inclusive deep-inelastic scattering. It provides particle identification for pions, kaons, and protons in the momentum range from 2 to 15 GeV , which is essential to these studies. The instrument uses two radiators, C4F10, a heavy fluorocarbon gas, and a wall of silica aerogel tiles. The use of aerogel in a RICH detector has only recently become possible with the development of clear, large, homogeneous and hydrophobic aerogel. A lightweight mirror was constructed using a newly perfected technique to make resin-coated carbon-fiber surfaces of optical quality. The photon detector consists of 1934 photomultiplier tubes (PMT) for each detector half, held in a soft steel matrix to provide shielding against the residual field of the main spectrometer magnet.