Performance of the BIS78 RPC detectors: a new concept of electronics and detector integration for high-rate and fast timing large size RPCs
Performance of the BIS78 RPC detectors: a new concept of electronics and detector integration for high-rate and fast timing large size RPCs
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BIS78 RPC 探测器的性能：适用于高速、快速定时大型 RPC 的电子和探测器集成的新概念
DOI：
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发表时间：
2020
影响因子：
1.3
通讯作者：
L. Pizzimento
中科院分区：
文献类型：
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作者：
L. Pizzimento
减少气体中每计数的平均电荷以及从噪声中区分非常小的信号的能力可以使电阻板腔探测器在高辐射背景环境中有效和长期运行。在大型强子对撞机ATLAS探测器BIS78升级项目的研发项目中，通过将快速（峰值时间为100 ps）和灵敏（阈值小至100 μV）的前端电子器件（FE）与超大尺寸探测器结构深度集成，实现了这一目标。这种创新的RPC集成概念以新构思的法拉第笼为核心，将读出条和FE嵌入其中，紧密包裹在带有1.2毫米厚电极的1毫米气隙RPC上，作为完全独立的单线态结构。我们研究了BIS78生产三重态腔的性能，由3个独立的2平方米的单线组成，每个单线提供二维空间和时间信息，显示了可实现的最小阈值，即在气隙内产生的每计数平均电荷为3个pC。我们表明，这些腔室提供了优于95%的单间隙效率，350 ps的时间分辨率和10 kHz/cm2的速率能力的记录综合性能。
The reduction of the average charge per count in the gas along with the capability to discriminate very small signals from noise can allow an efficient and long-term Resistive Plate Chamber detector operation in high radiation background environment. This goal has been reached during the R&D program of the BIS78 upgrade project of the ATLAS detector at LHC through the deep integration of a fast (100 ps peaking time) and sensitive (as small as 100 μV threshold) Front-End electronics (FE) with a very large size detector structure. This innovative RPC integration concept pivots on a newly conceived faraday cage, embedding the readout strips and the FE, tightly wrapped around a 1 mm gas gap RPC with 1.2 mm thick electrodes, as a fully independent singlet structure. We studied the performance of BIS78 production triplet chambers, made of 3 independent singlets of 2 m2, each providing a 2D space and time information, showing a minimum threshold achievable of 3 pC of average charge per count produced inside the gas gap. We show that these chambers grant a record combined performance of better than 95% single gap efficiency, time resolution of 350 ps and 10 kHz/cm2 rate capability.