The CRAB facility at the TU Wien TRIGA reactor: status and related physics program
The CRAB facility at the TU Wien TRIGA reactor: status and related physics program
The CRAB (Calibrated nuclear Recoils for Accurate Bolometry) project aims to precisely characterize the response of cryogenic detectors to sub-keV nuclear recoils of direct interest for coherent neutrino-nucleus scattering and dark matter search experiments. The CRAB method relies on the radiative capture of thermal neutrons in the target detector, resulting in a nuclear recoil with a well-defined energy. We present a new experimental setup installed at the TRIGA Mark-II reactor at Atominstitut (Vienna), providing a low intensity beam of thermal neutrons sent to the target cryogenic detector mounted inside a wet dilution refrigerator Kelvinox 100. A crown of BaF$_2$ detectors installed outside the dewar enables coincident detection of the high-energy $\gamma$ escaping the target crystal after neutron capture. After the presentation of all components of the setup we report the analysis of first commissioning data with a CaWO$_4$ detector of the \NUCLEUS experiment. They show stable operation of the cryostat and detectors on a week-scale. Due to an energy resolution currently limited to 20 eV we use neutron beam induced events at high energy, in the 10 to 100 keV range, to demonstrate the excellent agreement between the data and simulation and the accurate understanding of external background. Thanks to these data we also propose an updated decay scheme of the low-lying excited states of $^{187}$W. Finally, we present the first evidence of neutron-capture induced coincidences between $\gamma$-detectors and a cryogenic detector. These promising results pave the way for an extensive physics program with various detector materials, like CaWO$_4$, Al$_2$O$_3$, Ge and Si.
M. Vivier、P. Wasser、A. Wex、H. Abele、P. Ajello、A. Armatol、B. Arnold、J. Billard、E. Bossio、J. Burkhart、F. Cappella、N. Casali、R. Cerulli、J. Colas、J-P. Crocombette、G. del Castello、M. del Gallo Roccagiovine、S. Dorer、C. Doutre、A. Erhart、S. Fichtinger、M. Friedl、P. Garin、R. Gergen、C. Goupy、D. Hainz、D. Hauff、E. Jericha、M. Kaznacheeva、H. Kluck、T. Lasserre、D. Lhuillier、O. Litaize、P. de Marcillac、S. Marnieros、R. Martin、E. Namuth、T. Ortmann、D. V. Poda、L. Peters、F. Reindl、W. Reindl、F. Rodari、J. Rothe、N. Schermer、J. Schieck、S. Sch?nert、C. Schwertner、G. Soum-Sidikov、R. Strauss、R. Thalmeier、L. Thulliez、C. Trunner、M. Vignati
IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FrancePhysik-Department, Technische Universit?t München, Garching, GermanyPhysik-Department, Technische Universit?t München, Garching, GermanyTU Wien, Atominstitut, 1020 WienPhysik-Department, Technische Universit?t München, Garching, GermanyUniv. Lyon, Université Lyon 1, CNRS-IN2P3, IP2I-Lyon, Villeurbanne, FranceInstitut für Hochenergiephysik der ?sterreichischen Akademie der Wissenschaften, Wien, AustriaUniv. Lyon, Université Lyon 1, CNRS-IN2P3, IP2I-Lyon, Villeurbanne, FranceIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FranceInstitut für Hochenergiephysik der ?sterreichischen Akademie der Wissenschaften, Wien, AustriaINFN, Sezione di Roma, Roma, ItalyINFN, Sezione di Roma, Roma, ItalyINFN, Sezione di Roma "Tor Vergata", Roma, ItalyUniv. Lyon, Université Lyon 1, CNRS-IN2P3, IP2I-Lyon, Villeurbanne, FranceUniversité Paris-Saclay, CEA, DES, SRMP, Gif-sur-Yvette, FranceDipartimento di Fisica, Sapienza Università di Roma, Roma, ItalyDipartimento di Fisica, Sapienza Università di Roma, Roma, ItalyTU Wien, Atominstitut, 1020 WienIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FrancePhysik-Department, Technische Universit?t München, Garching, GermanyInstitut für Hochenergiephysik der ?sterreichischen Akademie der Wissenschaften, Wien, AustriaInstitut für Hochenergiephysik der ?sterreichischen Akademie der Wissenschaften, Wien, AustriaIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FranceTU Wien, Atominstitut, 1020 WienIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FranceTU Wien, TRIGA Center Atominstitut, Wien, AustriaPhysik-Department, Technische Universit?t München, Garching, GermanyTU Wien, Atominstitut, 1020 WienPhysik-Department, Technische Universit?t München, Garching, GermanyInstitut für Hochenergiephysik der ?sterreichischen Akademie der Wissenschaften, Wien, AustriaPhysik-Department, Technische Universit?t München, Garching, GermanyIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FranceCEA, DES, IRESNE, DER, Cadarache, Saint-Paul-Lez-Durance, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, FranceIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FrancePhysik-Department, Technische Universit?t München, Garching, GermanyPhysik-Department, Technische Universit?t München, Garching, GermanyUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, FrancePhysik-Department, Technische Universit?t München, Garching, GermanyTU Wien, Atominstitut, 1020 WienInstitut für Hochenergiephysik der ?sterreichischen Akademie der Wissenschaften, Wien, AustriaIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FrancePhysik-Department, Technische Universit?t München, Garching, GermanyPhysik-Department, Technische Universit?t München, Garching, GermanyTU Wien, Atominstitut, 1020 WienPhysik-Department, Technische Universit?t München, Garching, GermanyTU Wien, Atominstitut, 1020 WienIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FrancePhysik-Department, Technische Universit?t München, Garching, GermanyInstitut für Hochenergiephysik der ?sterreichischen Akademie der Wissenschaften, Wien, AustriaIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FranceTU Wien, TRIGA Center Atominstitut, Wien, AustriaDipartimento di Fisica, Sapienza Università di Roma, Roma, Italy
粒子探测技术、辐射探测技术、核仪器仪表物理学
M. Vivier,P. Wasser,A. Wex,H. Abele,P. Ajello,A. Armatol,B. Arnold,J. Billard,E. Bossio,J. Burkhart,F. Cappella,N. Casali,R. Cerulli,J. Colas,J-P. Crocombette,G. del Castello,M. del Gallo Roccagiovine,S. Dorer,C. Doutre,A. Erhart,S. Fichtinger,M. Friedl,P. Garin,R. Gergen,C. Goupy,D. Hainz,D. Hauff,E. Jericha,M. Kaznacheeva,H. Kluck,T. Lasserre,D. Lhuillier,O. Litaize,P. de Marcillac,S. Marnieros,R. Martin,E. Namuth,T. Ortmann,D. V. Poda,L. Peters,F. Reindl,W. Reindl,F. Rodari,J. Rothe,N. Schermer,J. Schieck,S. Sch?nert,C. Schwertner,G. Soum-Sidikov,R. Strauss,R. Thalmeier,L. Thulliez,C. Trunner,M. Vignati.The CRAB facility at the TU Wien TRIGA reactor: status and related physics program[EB/OL].(2025-05-21)[2025-06-17].https://arxiv.org/abs/2505.15227.点此复制
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