PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Development of accelerators and detectors
Purification of large volume of liquid argon for LEGEND-200
M. Haranczyk*, M. Harańczyk", N. Burlac", N. Di Marco, P. Krauze", T. Mróz", L. Papp", G. Salamanna", S. Schönert", M. Schwarz", D. Tagnani", S. Tombiński", C. Vogl" and G. Zuzel"
Full text: pdf
Pre-published on: March 17, 2022
Published on: May 24, 2022
The design, construction and performance of the system capable of purifying 65m3 of liquid argon to sub-ppm level designed for LEGEND – 200 experiment is presented. The quality of the purified liquid argon is monitored in real-time during the purification process, by measuring the argon triplet state lifetime and simultaneous direct measurements of the concentrations of impurities such as water, oxygen, and nitrogen with a sensitivity of 0.1 ppm. The achieved argon triplet lifetime value measured inside the LEGEND cryostat, when filled in 70% of its capacity, was at the level of τ3 = 1.3 μs. If needed, the system may also be used later to purify liquid argon already filled into the LEGEND cryostat in the loop mode.
DOI: https://doi.org/10.22323/1.380.0102
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.