High-resolution ion pulse ionization chamber with air filling for the 222Rn decays detection

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 801; pp. 27 - 33
• Main Authors: Gavrilyuk, Yu.M., Gangapshev, A.M., Gezhaev, A.M., Etezov, R.A., Kazalov, V.V., Kuzminov, V.V., Panasenko, S.I., Ratkevich, S.S., Tekueva, D.A., Yakimenko, S.P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 21.11.2015
• Subjects: Ion-pulse ionization chamber; Low-background measurements; Monitoring of 222Rn; Monitoring of 222Rn; Low-background measurements; Ion-pulse ionization chamber
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2015.08.034

The construction and characteristics of the cylindrical ion pulse ionization chamber (CIPIC) with a working volume of 3.2L are described. The chamber is intended to register α-particles from the 222Rn and its daughter׳s decays in the filled air sample. The detector is less sensitive to electromagnetic pick-ups and mechanical noises. The digital pulse processing method is proposed to improve the energy resolution of the ion pulse ionization chamber. An energy resolution of 1.6% has been achieved for the 5.49MeV α-line. The dependence of the energy resolution on high voltage and working media pressure has been investigated and the results are presented. •The construction and characteristics of the cylindrical ion pulse ionization chamber (CIPIC) with a working volume of 3.2L are described.•The chamber is intended to register alpha-particles from 222Rn and its daughter׳s decays in the filled air sample.•The detector is less sensitive to electromagnetic pick-ups and mechanical noises.•An energy resolution of 1.6% has been achieved for the 5.49MeV alpha-line. The dependence of the energy resolution on high voltage and working media pressure have been investigated and the results are presented.