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

doi:10.1140/epjc/s10052-023-12162-x

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2023) 83: 979
https://doi.org/10.1140/epjc/s10052-023-12162-x

Regular Article - Experimental Physics

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

A. Tesi¹^a, S. Leardini¹^,2, L. Moleri¹, D. Gonzalez-Diaz², A. Jash¹, A. Breskin¹ and S. Bressler¹

¹ Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, Israel
² Instituto Galego de Física de Altas Enerxías, Univ. de Santiago de Compostela, Santiago de Compostela, Spain

^a andrea.tesi@weizmann.ac.il

Received: 9 July 2023
Accepted: 18 October 2023
Published online: 30 October 2023

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 – i.e. superior gain and stability.

© The Author(s) 2023

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