High space resolution μ-RWELL for high rate applications
High space resolution μ-RWELL for high rate applications
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高空间分辨率 μ-RWELL 适用于高速率应用
DOI：
10.1088/1742-6596/1498/1/012003
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Tskhadadze E.
中科院分区：
文献类型：
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作者：
Bencivenni G.;Felici G.;Gatta M.;Giovannetti M.;Morello G.;Poli Lener M.;de Oliveira R.;Ochi A.;Tskhadadze E.
µ-RWELL是一款单放大级电阻式MPGD。放大元件在带有高密度盲孔（井）的聚酰亚胺箔上实现，通过薄电阻膜嵌入读出PCB中。电阻层的引入影响了读出电极上的电荷扩散，抑制了从流光到火花的过渡，从而有可能获得较大的增益（bbb10104）。作为一个缺点，承受高颗粒通量的能力降低了。为了摆脱这种限制，设计了具有快速电流疏散方案的不同电阻布局。在这项工作中，我们介绍了在PSI完成的高速率布局的性能研究，以及在CERN进行的正交和倾斜轨道的空间分辨率测量。
The µ-RWELL is a single-amplification stage resisitive MPGD. The amplification element, realized on a polyimide foil micro-patterned with a high density blind-holes (wells), is embedded through a thin resistive film, in the readout PCB. The introduction of the resistive layer affects the charge spread on the readout electrodes and suppresses the transition from streamer to spark giving the possibility to achieve large gains (> 10 4). As a drawback the capability to stand high particle fluxes is reduced. In order to get rid of such a limitation different resistive layouts with prompt current evacuation schemes have been designed. In this work we present the study of the performance of the high rate layouts done at PSI, together with the measurement of the space resolution for orthogonal and inclined tracks performed at CERN.