Details

Autor(en) / Beteiligte

• Bhattacharya, P.
• Tesi, A.
• Shaked-Renous, D.
• Moleri, L.
• Breskin, A.
• Bressler, S.

Titel

Single-electron spectra in RPWELL-based detectors

Ist Teil von

• Journal of instrumentation, 2021-05, Vol.16 (5), p.P05004

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract Single-electron spectra are the key ingredient in the efficient detection of single UV-photons. In this work, we investigated the shape of single-photoelectron spectra in single- and double-stage Resistive Plate WELL (RPWELL) detector configurations, operated in Ne/CH 4 and Ar/CH 4 . Discharge-free operation was reached over a broad dynamic range, with charge gains of [range-phrase = -]e4e6. Compared to the usual exponential ones, the observed Polya-like charge spectra pave the way towards higher single-electron detection efficiencies. The latter was evaluated here, using experimental data combined with numerical simulations. The effects of the gas mixtures, electric field configuration, and detector geometry on the Polya spectra and their related “θ” parameter are presented.