10.17238/issn2226-8812.2022.3.82-96    Characteristics of a matrix proportional counter with circular anodes

Авторы: Etezov R.A., Gavrilyuk Yu M., Gangapshev A.M., Kazalov V.V., Khokonov A.Kh, Kuzminov V.V.
Журнал: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Том: 1045
Номер: 167554
Год издания: 2023
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 1 January 2023
DOI: 10.17238/issn2226-8812.2022.3.82-96
Аннотация: The construction of a butt-end multicell matrix proportional counter (MMPC) is presented in the work. Each cell is a butt-end proportional counter with a 5 mm cathode diameter and 0.8 mm circular anode diameter. In the example of the 3 Ч 3 matrix, it is shown that the gas multiplication of the central cell depends on the potentials at the anodes of the peripheral cells, the drift electrode, the forming rings, and the surrounding metal parts of the structure. The amplitude characteristics were measured when the MMPC was ﬁlled with mixtures of 96.3% Ar + 3.7% Xe and 90% Ar + 10% CH4 at pressures of 620 Torr and 6 Torr. The calibration was carried out with α-particles and γ-quanta from a 238Pu source. For photons with energies of 7.5 keV, a resolution of 26% was obtained. It is shown that, based on MMPC, it is possible to fabricate recording surfaces of arbitrary conﬁguration
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