A liquid-phase loop-mode argon purification system
| Autor: | Vogl, Christoph, Schwarz, Mario, Krause, Patrick, Zuzel, Grzegorz, Schönert, Stefan |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| 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 |
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