Design and commissioning of a 600 L Time Projection Chamber with Microbulk Micromegas
Design and commissioning of a 600 L Time Projection Chamber with Microbulk Micromegas
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DOI：
10.1088/1748-0221/13/06/p06012
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发表时间：
2018-04
影响因子：
1.3
通讯作者：
H. Lin;D. Calvet;L. Chen;X. Chen;T. Dafni;C. Fu;J. Galán;K. Han;S. Hu;Y. Huo;I. Irastorza;X. Ji;X. Li;J. Liu;H. Mirallas;D. Neyret;K. Ni;H. Qiao;X. Ren;Sh. Wang;Si. Wang;Y. Yang;Y. Yuan;T. Zhang;L. Zhao
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文献类型：
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作者：
H. Lin;D. Calvet;L. Chen;X. Chen;T. Dafni;C. Fu;J. Galán;K. Han;S. Hu;Y. Huo;I. Irastorza;X. Ji;X. Li;J. Liu;H. Mirallas;D. Neyret;K. Ni;H. Qiao;X. Ren;Sh. Wang;Si. Wang;Y. Yang;Y. Yuan;T. Zhang;L. Zhao
我们报告的设计，施工，并初步调试结果的一个大型高压气体时间投影室（TPC）与Micromegas模块的电荷读出。检测器容器具有约600 L的内部容积和270 L的有效容积。在10 bar的工作压力下，有效体积包含约20 kg的氙气，可以对带电粒子轨迹进行成像。漂移电子由电荷读出平面收集，该平面容纳七个Micromegas模块的镶嵌。每个Micromegas覆盖20厘米乘20厘米的正方形。一种新型的Microbulk Micromegas由于其良好的增益均匀性和低放射性污染而被选择用于该应用。初步调试结果与1 Micromegas模块运行1巴氩气和异丁烷气体混合物和5巴氙气和三甲胺（TMA）气体混合物的报告。我们还记录了宇宙射线事件的扩展背景轨迹，并强调了这种气态TPC的独特跟踪功能。
We report the design, construction, and initial commissioning results of a large high pressure gaseous Time Projection Chamber (TPC) with Micromegas modules for charge readout. The detector vessel has an inner volume of about 600 L and an active volume of 270 L. At 10 bar operating pressure, the active volume contains about 20 kg of xenon gas and can image charged particle tracks. Drift electrons are collected by the charge readout plane, which accommodates a tessellation of seven Micromegas modules. Each of the Micromegas covers a square of 20 cm by 20 cm. A new type of Microbulk Micromegas is chosen for this application due to its good gain uniformity and low radioactive contamination. Initial commissioning results with 1 Micromegas module running with 1 bar argon and isobutane gas mixture and 5 bar xenon and trimethylamine (TMA) gas mixture are reported. We also recorded extended background tracks from cosmic ray events and highlighted the unique tracking feature of this gaseous TPC.