A liquid-phase loop-mode argon purification system

Autor:	Vogl, Christoph, Schwarz, Mario, Krause, Patrick, Zuzel, Grzegorz, Schönert, Stefan
Rok vydání:	2023
Předmět:	Physics - Instrumentation and Detectors Astrophysics - Instrumentation and Methods for Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1088/1748-0221/19/03/C03030
Popis:	Noble gas and liquid detectors rely on high chemical purity for successful operation. While gaseous purification has emerged as a reliable method of producing high-purity noble fluids, the requirement for large mass flows drives the development of liquid-phase purification. We constructed a medium-scale liquid argon (LAr) purification system based on a copper catalyst and 4 A molecular sieve capable of purifying 1 t of commercial LAr 5.0 to a long effective triplet lifetime of $\tau_3 \sim 1.3 \mu$s. We further demonstrate that a quenched effective triplet lifetime of $\tau_3 \sim 1 \mu$s, due to contamination by air, can be recovered in loop-mode purification to $\tau_3 \sim 1.3 \mu$s after > 20 volume exchanges. Comment: 8 pages, 2 figures, contribution to LIDINE2023 v2: Added discussion of N2-trapping capability of purifier. Fixed typos, improved text/figure style, and added a reference
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2311.18697 Zobrazit plný text záznamu View this record from Arxiv