A novel liquid argon purity monitor based on <sup>207</sup>Bi
Abstract A novel liquid argon purity monitor based on a 207 Bi radioactive source, emitting monochromatic internal-conversion electrons, is presented. This new monitor allows for a very precise and fast measurement of the electronegative impurities concentration in liquid argon. It can be operated continuously in liquid argon TPC experiments without interfering with the main detector operation. Different drift lengths can be assembled for the proposed device, to assess a large range of liquid argon purities while minimizing systematic uncertainties. Two prototypes have been built and successfully operated in dedicated test stands. The results and performance are reported.
Authors
- S. Marchini
- Riccardo Triozzi (ORCID: https://orcid.org/0000-0001-7613-6498)
- M. Nicoletto
- B. Baibussinov
- Rong Z. Gan (ORCID: https://orcid.org/0000-0001-7568-0774)
- X. Pons (ORCID: https://orcid.org/0000-0002-4745-5032)
- G. Gurung (ORCID: https://orcid.org/0000-0002-3133-3903)
- F Fabris (ORCID: https://orcid.org/0000-0003-0894-8499)
- G. Rampazzo
- M. Bettini
- F. Varanini (ORCID: https://orcid.org/0000-0003-4945-3548)
- G. Meng
- F. Pietropaolo (ORCID: https://orcid.org/0000-0003-3606-0104)
- A. Guglielmi
- B. Voirin
Institutions
- École Normale Supérieure de Lyon (FR)
- Laboratoire de Physique de l'ENS de Lyon (FR)
Publication Details
- Journal
- Journal of Instrumentation
- Published
- 2025-02-01
- DOI
- https://doi.org/10.1088/1748-0221/20/02/p02011
- Primary Topic
- Radiation Detection and Scintillator Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00