Liquid argon purification and purity monitoring: apparatus and first results
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2026
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| author | Wei, Wenzhao Jaidee, I-see Warisa Dockal, Spencer Tsvetkova, Vyara Bui, Genevieve Lin, Tenaya Chen Epstein, Lucia Faubus, Ava Hambraeus, Neneh M. T. Lyon, Sushine B. Lopez, Diana McGee, Natalie Migden, Piper J. Nicollin, Cleo Unnithan, Meenakshi Asaadi, Jonathan Battat, James B. R. |
| author_facet | Wei, Wenzhao Jaidee, I-see Warisa Dockal, Spencer Tsvetkova, Vyara Bui, Genevieve Lin, Tenaya Chen Epstein, Lucia Faubus, Ava Hambraeus, Neneh M. T. Lyon, Sushine B. Lopez, Diana McGee, Natalie Migden, Piper J. Nicollin, Cleo Unnithan, Meenakshi Asaadi, Jonathan Battat, James B. R. |
| contents | We report results from a 13-liter purified liquid argon test stand at Wellesley College. The system includes a single-pass liquid-phase purification column, a double-gridded purity monitor to assess the electron lifetime, and a slow control and data acquisition system. Initial measurements demonstrate an O$_2$-equivalent impurity concentration of 0.25 ppb, corresponding to an electron lifetime of 1.5 ms at a drift field of 500 V/cm. This test stand supports ongoing detector R&D on charge and light readout technologies for future large-scale liquid argon time projection chambers, such as Q-Pix and other cold electronics systems, as part of a facility at Wellesley College for fundamental studies of LArTPC readouts. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_21307 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Liquid argon purification and purity monitoring: apparatus and first results Wei, Wenzhao Jaidee, I-see Warisa Dockal, Spencer Tsvetkova, Vyara Bui, Genevieve Lin, Tenaya Chen Epstein, Lucia Faubus, Ava Hambraeus, Neneh M. T. Lyon, Sushine B. Lopez, Diana McGee, Natalie Migden, Piper J. Nicollin, Cleo Unnithan, Meenakshi Asaadi, Jonathan Battat, James B. R. Instrumentation and Detectors High Energy Physics - Experiment We report results from a 13-liter purified liquid argon test stand at Wellesley College. The system includes a single-pass liquid-phase purification column, a double-gridded purity monitor to assess the electron lifetime, and a slow control and data acquisition system. Initial measurements demonstrate an O$_2$-equivalent impurity concentration of 0.25 ppb, corresponding to an electron lifetime of 1.5 ms at a drift field of 500 V/cm. This test stand supports ongoing detector R&D on charge and light readout technologies for future large-scale liquid argon time projection chambers, such as Q-Pix and other cold electronics systems, as part of a facility at Wellesley College for fundamental studies of LArTPC readouts. |
| title | Liquid argon purification and purity monitoring: apparatus and first results |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2604.21307 |