Low-energy Calibration of XENON1T with an Internal $^{37}$Ar Source
Abstract
A low-energy electronic recoil calibration of XENON1T, a dual-phase xenon time projection chamber, with an internal Ar source was performed. This calibration source features a 35-day half-life and provides two mono-energetic lines at 2.82 keV and 0.27 keV. The photon yield and electron yield at 2.82 keV are measured to be (32.30.3) photons/keV and (40.60.5) electrons/keV, respectively, in agreement with other measurements and with NEST predictions. The electron yield at 0.27 keV is also measured and it is (68.0) electrons/keV. The Ar calibration confirms that the detector is well-understood in the energy region close to the detection threshold, with the 2.82 keV line reconstructed at (2.830.02) keV, which further validates the model used to interpret the low-energy electronic recoil excess previously reported by XENON1T. The ability to efficiently remove argon with cryogenic distillation after the calibration proves that Ar can be considered as a regular calibration source for multi-tonne xenon detectors.
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Cite
@article{arxiv.2211.14191,
title = {Low-energy Calibration of XENON1T with an Internal $^{37}$Ar Source},
author = {E. Aprile and K. Abe and F. Agostini and S. Ahmed Maouloud and M. Alfonsi and L. Althueser and B. Andrieu and E. Angelino and J. R. Angevaare and V. C. Antochi and D. Antón Martin and F. Arneodo and L. Baudis and A. L. Baxter and L. Bellagamba and R. Biondi and A. Bismark and A. Brown and S. Bruenner and G. Bruno and R. Budnik and T. K. Bui and C. Cai and C. Capelli and J. M. R. Cardoso and D. Cichon and A. P. Colijn and J. Conrad and J. J. Cuenca-García and J. P. Cussonneau and V. D'Andrea and M. P. Decowski and P. Di Gangi and S. Di Pede and S. Diglio and K. Eitel and A. Elykov and S. Farrell and A. D. Ferella and C. Ferrari and H. Fischer and W. Fulgione and P. Gaemers and R. Gaior and A. Gallo Rosso and M. Galloway and F. Gao and R. Glade-Beucke and L. Grandi and J. Grigat and M. Guida and R. Hammann and A. Higuera and C. Hils and L. Hoetzsch and J. Howlett and M. Iacovacci and Y. Itow and J. Jakob and F. Joerg and A. Joy and N. Kato and M. Kara and P. Kavrigin and S. Kazama and M. Kobayashi and G. Koltman and A. Kopec and F. Kuger and H. Landsman and R. F. Lang and L. Levinson and I. Li and S. Li and S. Liang and S. Lindemann and M. Lindner and K. Liu and J. Loizeau and F. Lombardi and J. Long and J. A. M. Lopes and Y. Ma and C. Macolino and J. Mahlstedt and A. Mancuso and L. Manenti and F. Marignetti and T. Marrodán Undagoitia and K. Martens and J. Masbou and D. Masson and E. Masson and S. Mastroianni and M. Messina and K. Miuchi and K. Mizukoshi and A. Molinario and S. Moriyama and K. Morå and Y. Mosbacher and M. Murra and J. Müller and K. Ni and U. Oberlack and B. Paetsch and J. Palacio and R. Peres and C. Peters and J. Pienaar and M. Pierre and V. Pizzella and G. Plante and J. Qi and J. Qin and D. Ramírez García and S. Reichard and A. Rocchetti and N. Rupp and L. Sanchez and P. Sanchez-Lucas and J. M. F. dos Santos and I. Sarnoff and G. Sartorelli and J. Schreiner and D. Schulte and P. Schulte and H. Schulze Eißing and M. Schumann and L. Scotto Lavina and M. Selvi and F. Semeria and P. Shagin and S. Shi and E. Shockley and M. Silva and H. Simgen and A. Takeda and P. -L. Tan and A. Terliuk and D. Thers and F. Toschi and G. Trinchero and C. Tunnell and F. Tönnies and K. Valerius and G. Volta and C. Weinheimer and M. Weiss and D. Wenz and C. Wittweg and T. Wolf and D. Xu and Z. Xu and M. Yamashita and L. Yang and J. Ye and L. Yuan and G. Zavattini and S. Zerbo and M. Zhong and T. Zhu and C. Geppert and J. Riemer},
journal= {arXiv preprint arXiv:2211.14191},
year = {2023}
}