https://doi.org/10.1140/epjc/s10052-024-12864-w
Regular Article - Experimental Physics
Perspectives of a single-anode cylindrical chamber operating in ionization mode and high gas pressure
1
LP2I Bordeaux, Université de Bordeaux, CNRS/IN2P3, 33175, Gradignan, France
2
CPPM, Université d’Aix-Marseille, CNRS/IN2P3, 13288, Marseille, France
3
SUBATECH, IMT-Atlantique, Université de Nantes, CNRS-IN2P3, Nantes, France
4
IJCLab, CNRS/IN2P3, Paris, France
5
LPSC-LSM, CNRS/IN2P3, Université Grenoble-Alpes, Modane, France
6
IRFU, CEA, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
7
: IFIC, Valencia, Spain
8
: CBMN, Bordeaux, France
m
pascal.lautridou@subatech.in2p3.fr
n
anselmo.meregaglia@cern.ch
Received:
6
February
2024
Accepted:
29
April
2024
Published online:
16
May
2024
As part of the R2D2 (Rare Decays with Radial Detector) R &D, the use of a gas detector with a spherical or cylindrical cathode, equipped with a single anode and operating at high pressure, was studied for the search of rare phenomena such as neutrinoless double-beta decay. The presented measurements were obtained with a cylindrical detector, covering gas pressures ranging from 1 to 10 bar in argon and 1 to 6 bar in xenon, using both a point-like source of Po (5.3 MeV
) and a diffuse source of
Rn (5.5 MeV
). Analysis and interpretation of the data were developed using the anodic current waveform. Similar detection performances were achieved with both gases, and comparable energy resolutions were measured with both sources. As long as the purity of the gas was sufficient, no significant degradation of the measured energy was observed by increasing the pressure. At the highest operating pressure, an energy resolution better than 1.5% full-width at half-maximum (FWHM) was obtained for both gaseous media, although optimal noise conditions were not reached.
© The Author(s) 2024
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Funded by SCOAP3.