论文标题
液体氙时间投影室开发的Xebra平台
The XeBRA platform for liquid xenon time projection chamber development
论文作者
论文摘要
Xebra是一个灵活的低温平台，旨在为寻找罕见事件的液体氙气检测器进行研究和开发。它的超大外冷冻仪使安装各种探测器设计成为可能。我们介绍该系统，包括其低温，气体处理，数据采集和缓慢的控制子系统。到目前为止，在Xebra中运行了两个具有敏感质量的双相时间投影室。使用来自这些数据，我们确定液体氙气速度的磁场依赖性。我们还测量了来自KR-83M的41.5 KEV能量沉积物的相对电荷和光收益率在50 v/cm至677 v/cm之间的电源。
XeBRA is a flexible cryogenic platform designed to perform research and development for liquid xenon detectors searching for rare events. Its extra-large outer cryostat makes it possible to install a wide variety of detector designs. We present the system, including its cryogenic, gas handling, data acquisition and slow control subsystems. Two dual phase time projection chambers with sensitive masses at the 1 kg scale have so far been operated in XeBRA. Using data from these, we determine the field-dependence of the electron drift velocity in liquid xenon. We also measure the relative charge and light yields for 41.5 keV energy deposits from Kr-83m with electric drift fields between 50 V/cm and 677 V/cm.
