A RICH detector for velocity determination of heavy ions
A RICH detector for velocity determination of heavy ions
复制标题
用于测定重离子速度的 RICH 探测器
DOI：
10.1016/0168-9002(93)91192-p
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发表时间：
1993
影响因子：
1.4
通讯作者：
R. Schneider
中科院分区：
文献类型：
--
作者：
K. Zeitelhack;J. Friese;H. Körner;J. Reinhold;R. Schneider
本文介绍了一种用于300 AMeV ≤ Ekin ≤ 2AGeV重离子速度精确测量的环形成像切伦科夫探测器。用TMAE作光敏剂的气体探测器测量了离子通过C6 F14液体薄层时发射的切伦科夫光。从切伦科夫光的强度分布可以推导出粒子的速度β和核电荷Z。对Ekin = 725 AMeV的氙离子（β= 0.827），速度分辨率Δβ/β= 1.8× 10− 3（FWHM），核电荷分辨率ΔZ/Z= 5.1× 10− 2（FWHM）。该器件对VUV光子（5.4 eV≤ E γ≤ 7.2 eV）的探测效率为2.8%，对应于品质因子N 0 <$19 cm− 1。
Abstract A Ring Imaging Cherenkov detector for precise velocity determination of heavy ions in the energy range 300 A MeV≤ E kin≤ 2 A GeV is described. The Cherenkov light emitted when ions pass a thin layer of liquid C 6 F 14 is measured with a gas detector using TMAE as photosensitive agent. From the intensity distribution of the Cherenkov light the particle's velocity β and its nuclear charge Z can be deduced. A velocity resolution Δβ/β= 1.8× 10− 3 (FWHM) and a nuclear charge resolution ΔZ/Z= 5.1× 10− 2 (FWHM) was achieved for E kin= 725 AMeV xenon ions (β= 0.827). The device has a detection efficiency ϵ⋍ 2.8% for VUV-photons (5.4 eV≤ E γ≤ 7.2 eV) corresponding to a quality factor N 0⋍ 19 cm− 1.