用于 CSR 外部目标实验的微型时间投影箱原型

Yuansheng Yang, Zhi Qin, Zhijie Li, Xianglun Wei, Xiangjie Wen, Zhoubo He, Dong Guo, Herun Yang, Peng Ma, Chengui Lu, Rongjiang Hu, T. Qiu, Zhixuan He, Li-Min Duan
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引用次数: 0

摘要

为兰州重离子研究装置(HIRFL)的冷却储存环外靶实验(CEE)设计了一个微型时间投影室原型,用于对靶区重离子碰撞中产生的带电粒子进行三维跟踪和粒子识别。原型包括一个有效容积为 9 厘米(高)、10 厘米(长)和 10 厘米(宽)的 TPC 探测器腔体、气体电子倍增器(GEM)探测器读出装置和基于 SAMPA 的电子装置。这项工作介绍了原型的设计、轨迹重建方法和性能。使用 55Fe X 射线源,能量分辨率为 11.03% sigma。使用 150 MeV/u Fe 的重离子束,测试结果表明原型机的二维位置分辨率和漂移时间分辨率分别优于 400 μm 和 20 ns。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A miniature prototype of Time Projection Chambers for CSR External-Target Experiment
A miniature prototype of time projection chamber for the cooling storage ring external-target experiment (CEE) at the Heavy Ion Research Facility in Lanzhou (HIRFL) was designed for three-dimensional tracking of charged particles produced in heavy-ion collisions at the target region and for particle identification. The prototype consists of a TPC detector chamber with active volume of 9 cm (height), 10 cm (length) and 10 cm (width), gas electron multiplier (GEM) detector readout and SAMPA-based electronics. This work describes design, track reconstruction method and performance of the prototype. The energy resolution is 11.03% sigma using a 55Fe x-ray source. Using heavy-ion beam of 150 MeV/u Fe, the test results show that the two-dimensional position resolution and drift time resolution of the prototype are better than 400 μm and 20 ns, respectively.
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