Optical readout: a tool for studying gas-avalanche processes
A. Rubin, L. Arazi, S. Bressler, A. Dery, L. Moleri, M. Pitt, D., Vartsky, and A. Breskin
TL;DR
This paper explores the use of optical readout to study avalanche processes in gaseous detectors, specifically in THGEMs with Ne/CF4 gas, providing new insights into avalanche behavior and detector characteristics.
Contribution
It demonstrates the application of optical readout for investigating avalanche propagation in THGEMs, offering a novel method for studying detector physics.
Findings
Measured hole-multiplicity and avalanche asymmetry in THGEMs
Analyzed effects of detector parameters on avalanche behavior
Proposed future research directions
Abstract
Optical recording of avalanche-induced photons is an interesting tool for studying basic physics processes in gaseous detectors. In this work we demonstrate the potential of optical readout in avalanche-propagation investigations in Thick Gas Electron Multipliers (THGEMs) operated with Ne/CF4 (95/5). We present the results of direct measurements, with single- and cascaded-THGEM detectors irradiated with soft x-rays, of the hole-multiplicity and avalanche asymmetry within holes, as a function of detector parameters. Further study directions are discussed.
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