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arXiv · 1907.05057

First results of Resistive-Plate Well (RPWELL) detector operation at 163 K

A. Roy·M. Morales·I. Israelashvili·A. Breskin·S. Bressler·D. Gonzalez-Diaz·C. Pecharromán·S. Shchemelinin·D. Vartsky·L. Arazi
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Abstract

We present for the first time, discharge-free operation at cryogenic conditions of a Resistive-Plate WELL (RPWELL) detector. It is a single-sided Thick Gaseous Electron Multiplier (THGEM) coupled to a readout anode via a plate of high bulk resistivity. The results of single- and double-stage RPWELL detectors operated in stable conditions in Ne/5$\%$CH$_{4}$ at 163 K are summarized. The RPWELL comprised a ferric-based (Fe$^{3+}$) ceramic composite ("Fe-ceramic") as the resistive plate, of volume resistivity $\sim$$10^{11}$ $\Omega$$\cdot$cm at this temperature. Gains of $\sim$$10^{4}$ and $\sim$$10^{5}$ were reached with the single-stage RPWELL, with 6 keV X-rays and single UV-photons, respectively. The double-stage detector, a THGEM followed by the RPWELL, reached gains $\sim$$10^{5}$ and $\sim$$10^{6}$ with X-rays and single UV-photons, respectively. The results were obtained with and without a CsI photocathode on the first multiplying element. Potential applications at these cryogenic conditions are discussed.

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A. Roy, M. Morales, I. Israelashvili, A. Breskin, S. Bressler, D. Gonzalez-Diaz, C. Pecharromán, S. Shchemelinin, D. Vartsky, L. Arazi. 2019-07-11. First results of Resistive-Plate Well (RPWELL) detector operation at 163 K. https://doi.org/10.1088/1748-0221/14/10/p10014

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