First studies on cascaded dual-phase liquid hole-multipliers in xenon
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866917782648520704 |
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| author | Martínez-Lema, G. Roy, A. Breskin, A. Arazi, L. |
| author_facet | Martínez-Lema, G. Roy, A. Breskin, A. Arazi, L. |
| contents | Challenges in scaling up noble-liquid time projection chambers prompted the exploration of new detection concepts. The liquid hole-multiplier (LHM) was introduced as a potential component, enabling the detection of ionization electrons and VUV photons. Prior studies focused on perforated electrodes coated with CsI immersed in the liquid and electroluminescence amplification produced on a bubble trapped underneath. However, the performance was hindered by electron transfer across the liquid-gas interface. Here, we explored a bubble-free variant, placing a CsI-coated Thick Gas Electron Multiplier electrode below the liquid-gas interface to improve the transfer efficiency across it. Results show >5-fold improvement in the S1'/S2 ratio (a proxy for the photon detection efficiency (PDE)) compared to the bubble-assisted LHM. Although the achieved PDE is still below expectation ($\sim$4%), we propose potential improvements to enhance the performance of this detector. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04338 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | First studies on cascaded dual-phase liquid hole-multipliers in xenon Martínez-Lema, G. Roy, A. Breskin, A. Arazi, L. Instrumentation and Detectors Instrumentation and Methods for Astrophysics High Energy Physics - Experiment Challenges in scaling up noble-liquid time projection chambers prompted the exploration of new detection concepts. The liquid hole-multiplier (LHM) was introduced as a potential component, enabling the detection of ionization electrons and VUV photons. Prior studies focused on perforated electrodes coated with CsI immersed in the liquid and electroluminescence amplification produced on a bubble trapped underneath. However, the performance was hindered by electron transfer across the liquid-gas interface. Here, we explored a bubble-free variant, placing a CsI-coated Thick Gas Electron Multiplier electrode below the liquid-gas interface to improve the transfer efficiency across it. Results show >5-fold improvement in the S1'/S2 ratio (a proxy for the photon detection efficiency (PDE)) compared to the bubble-assisted LHM. Although the achieved PDE is still below expectation ($\sim$4%), we propose potential improvements to enhance the performance of this detector. |
| title | First studies on cascaded dual-phase liquid hole-multipliers in xenon |
| topic | Instrumentation and Detectors Instrumentation and Methods for Astrophysics High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2409.04338 |