An Integral Method for Processing Xenon Used as a Working Medium in the RED-100 Two-Phase Emission Detector

• Published in: Instruments and experimental techniques (New York) 2019-10, Vol.62 (4), p.457-463
• Main Authors: Akimov, D. Yu, Belov, V. A., Bolozdynya, A. I., Vasin, A. A., Galavanov, A. V., Gusakov, Yu. V., Kdib, D. E., Kovalenko, A. G., Kozlova, E. S., Konovalov, A. M., Kumpan, A. V., Lukyashin, A. V., Melikyan, Y. A., Nepochataya, O. E., Rudik, D. G., Simakov, G. E., Sosnovtsev, V. V., Khromov, A. V., Shakirov, A. V.
• Format: Article
• Language: English
• Subjects: Beta decay; Beta rays; Boron; Coherent scattering; Dark matter; Elastic scattering; Electrical Engineering; Emission analysis; Free electrons; Integrals; Measurement Science and Instrumentation; Nuclear Experimental Technique; Nuclei (nuclear physics); Particle decay; Physical Chemistry; Physics; Physics and Astronomy; Searching; Sensors; Solar neutrinos; Weakly interacting massive particles; Xenon
• ISSN: 0020-4412; 1608-3180
• DOI: 10.1134/S002044121904002X

An integral method is described for processing xenon used as a working medium in the RED-100 two-phase emission detector constructed in the NRNU MEPhI to study the process of elastic coherent neutrino scattering off atomic nuclei. The developed technology for purifying xenon and the detector has made it possible to increase the lifetime of quasi-free electrons in the 205-kg liquid xenon from ≤0.1 to ≥400 μs in fields of 50−500 V/cm. The entire procedure takes approximately 1000 h. The method can be used to process working media for new-generation two-phase emission detectors designed to conduct basic research, in particular, searching for dark matter in the form of weakly interacting massive particles, detecting boron solar neutrinos, and searching for neutrinoless double-beta decay.