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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.02025 |
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| _version_ | 1866909479303380992 |
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| author | Bratrud, G. Chang, C. L. Chen, R. Cudmore, E. Figueroa-Feliciano, E. Hong, Z. Kennard, K. T. Lewis, S. Lisovenko, M. Mateo, L. O. Novati, V. Novosad, V. Oliveri, E. Ren, R. Scarpaci, J. A. Schmidt, B. Wang, G. Winslow, L. Yefremenko, V. G. Zhang, J. Baxter, D. Hollister, M. James, C. Lukens, P. Temples, D. J. |
| author_facet | Bratrud, G. Chang, C. L. Chen, R. Cudmore, E. Figueroa-Feliciano, E. Hong, Z. Kennard, K. T. Lewis, S. Lisovenko, M. Mateo, L. O. Novati, V. Novosad, V. Oliveri, E. Ren, R. Scarpaci, J. A. Schmidt, B. Wang, G. Winslow, L. Yefremenko, V. G. Zhang, J. Baxter, D. Hollister, M. James, C. Lukens, P. Temples, D. J. |
| contents | Cryogenic calorimetric experiments to search for neutrinoless double-beta decay ($0νββ$) are highly competitive, scalable and versatile in isotope. The largest planned detector array, CUPID, is comprised of about 1500 individual Li$_2^{100}$MoO$_{4}$ detector modules with a further scale up envisioned for a follow up experiment (CUPID-1T). In this article, we present a novel detector concept targeting this second stage with a low impedance TES based readout for the Li$_2$MoO$_{4}$ absorber that is easily mass-produced and lends itself to a multiplexed readout. We present the detector design and results from a first prototype detector operated at the NEXUS shallow underground facility at Fermilab. The detector is a 2-cm-side cube with 21$\,$g mass that is strongly thermally coupled to its readout chip to allow rise-times of $\sim$0.5$\,$ms. This design is more than one order of magnitude faster than present NTD based detectors and is hence expected to effectively mitigate backgrounds generated through the pile-up of two independent two neutrino decay events coinciding close in time. Together with a baseline resolution of 1.95$\,$keV (FWHM) these performance parameters extrapolate to a background index from pile-up as low as $5\cdot 10^{-6}\,$counts/keV/kg/yr in CUPID size crystals. The detector was calibrated up to the MeV region showing sufficient dynamic range for $0νββ$ searches. In combination with a SuperCDMS HVeV detector this setup also allowed us to perform a precision measurement of the scintillation time constants of Li$_2$MoO$_{4}$. The crystal showed a significant fast scintillation emission with O(10$\,μ$s) time-scale, more than an order below the detector response of presently considered light detectors suggesting the possibility of further progress in pile-up rejection through better light detectors in the future. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_02025 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | First demonstration of a TES based cryogenic Li$_2$MoO$_4$detector for neutrinoless double beta decay search Bratrud, G. Chang, C. L. Chen, R. Cudmore, E. Figueroa-Feliciano, E. Hong, Z. Kennard, K. T. Lewis, S. Lisovenko, M. Mateo, L. O. Novati, V. Novosad, V. Oliveri, E. Ren, R. Scarpaci, J. A. Schmidt, B. Wang, G. Winslow, L. Yefremenko, V. G. Zhang, J. Baxter, D. Hollister, M. James, C. Lukens, P. Temples, D. J. High Energy Physics - Experiment Nuclear Experiment Instrumentation and Detectors Cryogenic calorimetric experiments to search for neutrinoless double-beta decay ($0νββ$) are highly competitive, scalable and versatile in isotope. The largest planned detector array, CUPID, is comprised of about 1500 individual Li$_2^{100}$MoO$_{4}$ detector modules with a further scale up envisioned for a follow up experiment (CUPID-1T). In this article, we present a novel detector concept targeting this second stage with a low impedance TES based readout for the Li$_2$MoO$_{4}$ absorber that is easily mass-produced and lends itself to a multiplexed readout. We present the detector design and results from a first prototype detector operated at the NEXUS shallow underground facility at Fermilab. The detector is a 2-cm-side cube with 21$\,$g mass that is strongly thermally coupled to its readout chip to allow rise-times of $\sim$0.5$\,$ms. This design is more than one order of magnitude faster than present NTD based detectors and is hence expected to effectively mitigate backgrounds generated through the pile-up of two independent two neutrino decay events coinciding close in time. Together with a baseline resolution of 1.95$\,$keV (FWHM) these performance parameters extrapolate to a background index from pile-up as low as $5\cdot 10^{-6}\,$counts/keV/kg/yr in CUPID size crystals. The detector was calibrated up to the MeV region showing sufficient dynamic range for $0νββ$ searches. In combination with a SuperCDMS HVeV detector this setup also allowed us to perform a precision measurement of the scintillation time constants of Li$_2$MoO$_{4}$. The crystal showed a significant fast scintillation emission with O(10$\,μ$s) time-scale, more than an order below the detector response of presently considered light detectors suggesting the possibility of further progress in pile-up rejection through better light detectors in the future. |
| title | First demonstration of a TES based cryogenic Li$_2$MoO$_4$detector for neutrinoless double beta decay search |
| topic | High Energy Physics - Experiment Nuclear Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2406.02025 |