First demonstration of 30 eVee ionization energy resolution with RICOCHET germanium cryogenic bolometers

Journal Article · Sat Feb 24 00:00:00 EST 2024 · European Physical Journal. C, Particles and Fields (Online)

DOI:https://doi.org/10.1140/epjc/s10052-024-12433-1· OSTI ID:2471948

Augier, C. ^[1]; Baulieu, G.; Belov, V.; Bergé, L.; Billard, J.; Bres, G.; Bret, J. L.; Broniatowski, A.; Calvo, M.; Cazes, A.; Chaize, D.; Chala, M.; Chapellier, M.; Chaplinsky, L.; Chemin, G.; Chen, R.; Colas, J.; Cudmore, E.; De Jesus, M.; de Marcillac, P. ; Dumoulin, L.; Exshaw, O.; Ferriol, S.; Figueroa-Feliciano, E.; Filippini, J. -B.; Formaggio, J. A.; Fuard, S.; Gascon, J.; Giuliani, A.; Goupy, J.; Goy, C.; Guerin, C.; Guy, E.; Harrington, P.; Hertel, S. A.; Heusch, M.; Hong, Z.; Ianigro, J. -C.; Jin, Y.; Juillard, A.; Karaivanov, D.; Kazarcev, S.; Lamblin, J.; Lattaud, H.; Li, M.; Lubashevskiy, A.; Marnieros, S.; Martini, N.; Mayer, D. W.; Minet, J.; Monfardini, A.; Mounier, F.; Novati, V.; Olivieri, E.; Oriol, C.; Mateo, L. Ovalle; Patel, P. K.; Perbet, E.; Pinckney, H. D.; Poda, D. V.; Ponomarev, D.; Rarbi, F.; Real, J. -S.; Redon, T.; Reyes, F. C.; Robert, A.; Rozov, S.; Rozova, I.; Scorza, S.; Schmidt, B.; Shevchik, Ye; Soldner, T.; Stachurska, J.; Stutz, A.; Vagneron, L.; Van De Pontseele, W.; Vezzu, F.; Winslow, L.; Yakushev, E.; Zinatulina, D.

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1. University of Lyon, Villeurbanne (France); Université Claude-Bernard Lyon 1 (UCBL), Villeurbanne (France); Centre National de la Recherche Scientifique (CNRS), Villeurbanne (France). Institut National de Physique Nucleaire et de Physique des Particules (IN2P3), Institut de Physique des deux Infinis de Lyon (IP2I Lyon); Ricochet Collaboration. et al.; OSTI

The future RICOCHET experiment aims to search for new physics in the electroweak sector by measuring the Coherent Elastic Neutrino-Nucleus Scattering process from reactor antineutrinos with high precision down to the sub-100 eV nuclear recoil energy range. While the RICOCHET collaboration is currently building the experimental setup at the reactor site, it is also finalizing the cryogenic detector arrays that will be integrated into the cryostat at the Institut Laue Langevin in early 2024. In this paper, we report on recent progress from the Ge cryogenic detector technology, called the CryoCube. More specifically, we present the first demonstration of a 30 eVee (electron equivalent) baseline ionization resolution (RMS) achieved with an early design of the detector assembly and its dedicated High Electron Mobility Transistor (HEMT) based front-end electronics with a total input capacitance of about 40 pF. This represents an order of magnitude improvement over the best ionization resolutions obtained on similar phonon-and-ionization germanium cryogenic detectors from the EDELWEISS and SuperCDMS dark matter experiments, and a factor of three improvement compared to the first fully-cryogenic HEMT-based preamplifier coupled to a CDMS-II germanium detector with a total input capacitance of 250 pF. Additionally, we discuss the implications of these results in the context of the future RICOCHET experiment and its expected background mitigation performance.

• Research Organization: Massachusetts Institute of Technology (MIT), Cambridge, MA (United States)
• Sponsoring Organization: European Research Council (ERC); National Science Foundation (NSF); USDOE Office of Science (SC)
• Contributing Organization: Ricochet Collaboration
• Grant/Contract Number: SC0020181
• OSTI ID: 2471948
• Journal Information: European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 2 Vol. 84; ISSN 1434-6052
• Publisher: Springer Nature
• Country of Publication: United States
• Language: English

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