Investigation of Eco-Friendly Gas Mixture for Gas Discharge Particle Detectors

• Published in: Physics of atomic nuclei 2020-12, Vol.83 (10), p.1449-1458
• Main Authors: Gavrilov, G. E., Dzyuba, A. A., Fetisov, A. A., Ilyin, D. S., Nasybulin, S. A., Tarakanov, V. I.
• Format: Article
• Language: English
• Subjects: Engineering Design of Nuclear Physics Equipment; Gas discharges; Gas mixtures; Irradiation; Large Hadron Collider; Luminosity; Muons; Particle and Nuclear Physics; Physics; Physics and Astronomy; Radiation counters; Sensors; Solenoids; Strontium 90
• ISSN: 1063-7788; 1562-692X
• DOI: 10.1134/S1063778820090100

The first results of studying the Ar/CO 2 /HFO 1234ze eco-friendly gas mixture for gas discharge detectors are presented. The work is performed using a prototype multiwire proportional chamber of the muon system of the CMS experiment at the LHC. The detector performance was studied in the accelerated aging mode under irradiation by a 90 Sr source. The accumulated charge was 1.2 C cm –1 , which is equivalent to almost 100 years of operation of the muon system’s chambers at an increased LHC luminosity of L = 5 × 10 34 cm –2 s –1 . The degradation of the gas gain in the irradiated zone at a level of 15% is noted only after the accumulation of ~1.0 C cm –1 of charge. The result suggests that the gas mixtures with HFO 1234ze look promising for use in wire gas discharge detectors.