arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2304.04044physics.ins-dethep-ex
收藏

用于双相 LAr-TPC 的新型电阻性电荷倍增器:迈向更高增益下的稳定运行

Novel resistive charge-multipliers for dual-phase LAr-TPCs: towards stable operation at higher gains

A. Tesi, L. Moleri, S. Leardini, A. Breskin, D. Gonzalez-Diaz, L. Olano-Vegas, A. Jash, S. Bressler

AI总结:

开发了RWELL和RPWELL探测器的低温版本,通过在THGEM中嵌入电阻材料减轻放电,实现双相TPC中电离电子的稳定雪崩倍增,使其能在比标准THGEM更高的电荷增益下运行。

摘要:

已开发出 RWELL 和 RPWELL 探测器的低温版本,旨在实现双相 TPC 中电离电子的稳定雪崩倍增。在 RWELL 中,沉积在绝缘体顶部的薄电阻层被插入到电子倍增器(THGEM)和读出阳极之间;在 RPWELL 中,电阻板直接耦合到 THGEM。液体中辐射诱导的电离电子被提取到气相中。它们漂移进入 THGEM 的孔中,在其中发生电荷倍增。将电阻材料嵌入倍增器被证明能够通过减轻放电来增强运行稳定性——因此与标准 THGEM(又名 LEM)倍增器相比,允许在更高的电荷增益下运行。我们介绍了探测器概念并报告了主要的初步结果。

英文摘要:

Cryogenic versions of Resistive WELL (RWELL) and Resistive Plate WELL (RPWELL) detectors have been developed, aimed at stable avalanche multiplication of ionization electrons in dual-phase TPCs. In the RWELL, a thin resistive layer deposited on top of an insulator is inserted in between the electron multiplier (THGEM) and the readout anode; in the RPWELL, a resistive plate is directly coupled to the THGEM. Radiation-induced ionization electrons in the liquid are extracted into the gaseous phase. They drift into the THGEM's holes where they undergo charge multiplication. Embedding resistive materials into the multiplier proved to enhance operation stability due to the mitigation of electrical discharges - thus allowing operation at higher charge gain compared to standard THGEM (a.k.a. LEM) multipliers. We present the detector concepts and report on the main preliminary results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑