The cryogenic RWELL: a stable charge multiplier for dual-phase liquid-argon detectors

A. Tesi; S. Leardini; L. Moleri; D. Gonzalez-Diaz; A. Jash; A. Breskin; S. Bressler

The cryogenic RWELL: a stable charge multiplier for dual-phase liquid-argon detectors

Instrumentation and Detectors 2023-09-28 v4

Authors: A. Tesi , S. Leardini , L. Moleri , D. Gonzalez-Diaz , A. Jash , A. Breskin , S. Bressler

Abstract

The operation of a cryogenic Resistive WELL (RWELL) in liquid argon vapor is reported for the first time. It comprises a Thick Gas Electron Multiplier (THGEM) structure coupled to a resistive Diamond-Like Carbon (DLC) anode deposited on an insulating substrate. The multiplier was operated at cryogenic temperature (90~K, 1.2~bar) in saturated argon vapor and characterized in terms of charge gain and electrical stability. A comparative study with standard, non-resistive THGEM (a.k.a LEM) and WELL multipliers, confirmed the RWELL advantages in terms of discharge quenching - thus superior gain and stability.

Keywords

cryogenic rwells liquid argon detectors charge multiplier thgem diamond-like carbon discharge quenching gain stability

Cite

@article{arxiv.2307.02343,
  title  = {The cryogenic RWELL: a stable charge multiplier for dual-phase liquid-argon detectors},
  author = {A. Tesi and S. Leardini and L. Moleri and D. Gonzalez-Diaz and A. Jash and A. Breskin and S. Bressler},
  journal= {arXiv preprint arXiv:2307.02343},
  year   = {2023}
}

The cryogenic RWELL: a stable charge multiplier for dual-phase liquid-argon detectors

Abstract

Keywords

Cite

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