Электронный каталог

Статья

Zur, I.A.
Improving the Energy Resolution of a ThGEM Detector by Incorporating an Additional Electrode Composed of a Metallised Track-Etched Membrane / I.A.Zur, A.S.Fedotov, S.A.Movchan, [a.o.]. – Text : electronic // Radiation Physics and Chemistry. – 2025. – Vol. 235. – P. 112694. – URL: https://doi.org/10.1016/j.radphyschem.2025.112694. – Bibliogr.: p. 112694-(8-9).

The efficiency of a metallised track-etched membrane (MTEM) as an additional electrode for a ThGEM detector with resistive DLC coating of anode has been demonstrated in this study. The grounded membrane placed in the induction gap of the ThGEM detector completely shields the induction signal from the ion cloud on the collector electrode and is opaque to the electron flow. The MTEM with a positive applied potential is also opaque to electrons and partially attenuates the ion signal. Metallised track-etched membrane improves the energy resolution of the ThGEM detector from 18% to 12%, with a gas gain coefficient of approximately 8 x 10&sup(3). A mathematical model of induction signal generation based on the solution of the Poisson equation with time-dependent ion cloud charge density is proposed. The results of the computational experiment demonstrate a linear growth of the induction signal’s amplitude with increasing potential on the MTEM. These results correlate with the experimentally measured dependencies and can be used to upgrade ThGEM detectors.



Спец.(статьи,препринты) = С 344.1и3 Микроструктурные газовые детекторы. Резистивные плоско-параллельные камеры
ОИЯИ = ОИЯИ (JINR)2025