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Observation of a low energy nuclear recoil peak in the neutron calibration data of an Al$_{2}$O$_{3}$ crystal in CRESST-III

Fuente: arXiv

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Main Authors:	CRESST Collaboration, Angloher, G., Banik, S., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burmeister, L., Casadei, F., Cipelli, E., Burkhart, J., Canonica, L., Dohm, J., Dominsky, F., Di Lorenzo, S., Einfalt, L., Erb, A., Fascione, E., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Ghete, V. M., Gorla, P., Guillaumon, P. V., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kluck, H., Kraus, H., von Krosigk, B., Langenkämper, A., Mancuso, M., Mauri, B., Mokina, V., Moore, C., Murali, P., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Valdenaire, D., Zanirato, M., Zema, V., Macko, M., Palušová, V.
Format:	Preprint
Published:	2025
Subjects:	Instrumentation and Detectors Data Analysis, Statistics and Probability
Online Access:	Acceder al recurso
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_version_	1866918054575734784
author	CRESST Collaboration Angloher, G. Banik, S. Bento, A. Bertolini, A. Breier, R. Bucci, C. Burmeister, L. Casadei, F. Cipelli, E. Burkhart, J. Canonica, L. Dohm, J. Dominsky, F. Di Lorenzo, S. Einfalt, L. Erb, A. Fascione, E. Feilitzsch, F. v. Fichtinger, S. Fuchs, D. Ghete, V. M. Gorla, P. Guillaumon, P. V. Hauff, D. Ješkovský, M. Jochum, J. Kaznacheeva, M. Kluck, H. Kraus, H. von Krosigk, B. Langenkämper, A. Mancuso, M. Mauri, B. Mokina, V. Moore, C. Murali, P. Olmi, M. Ortmann, T. Pagliarone, C. Pattavina, L. Petricca, F. Potzel, W. Povinec, P. Pröbst, F. Pucci, F. Reindl, F. Rothe, J. Schäffner, K. Schieck, J. Schönert, S. Schwertner, C. Stahlberg, M. Stodolsky, L. Strandhagen, C. Strauss, R. Usherov, I. Valdenaire, D. Zanirato, M. Zema, V. Macko, M. Palušová, V.
author_facet	CRESST Collaboration Angloher, G. Banik, S. Bento, A. Bertolini, A. Breier, R. Bucci, C. Burmeister, L. Casadei, F. Cipelli, E. Burkhart, J. Canonica, L. Dohm, J. Dominsky, F. Di Lorenzo, S. Einfalt, L. Erb, A. Fascione, E. Feilitzsch, F. v. Fichtinger, S. Fuchs, D. Ghete, V. M. Gorla, P. Guillaumon, P. V. Hauff, D. Ješkovský, M. Jochum, J. Kaznacheeva, M. Kluck, H. Kraus, H. von Krosigk, B. Langenkämper, A. Mancuso, M. Mauri, B. Mokina, V. Moore, C. Murali, P. Olmi, M. Ortmann, T. Pagliarone, C. Pattavina, L. Petricca, F. Potzel, W. Povinec, P. Pröbst, F. Pucci, F. Reindl, F. Rothe, J. Schäffner, K. Schieck, J. Schönert, S. Schwertner, C. Stahlberg, M. Stodolsky, L. Strandhagen, C. Strauss, R. Usherov, I. Valdenaire, D. Zanirato, M. Zema, V. Macko, M. Palušová, V.
contents	The current generation of cryogenic solid state detectors used in direct dark matter and CE\textnu NS searches typically reach energy thresholds of $\mathcal{O}$(10)$\,$eV for nuclear recoils. For a reliable calibration in this energy regime a method has been proposed, providing mono-energetic nuclear recoils at low energies $\sim\,$100$\,$eV$\,$-$\,$1$\,$keV. In this work we report on the observation of a peak at (1113.6$^{+6.5}_{-6.5}$)$\,$eV in the data of an Al$_{2}$O$_{3}$ crystal in CRESST-III, which was irradiated with neutrons from an AmBe calibration source. We attribute this mono-energetic peak to the radiative capture of thermal neutrons on $^{27}$Al and the subsequent de-excitation via single $γ$-emission. We compare the measured results with the outcome of Geant4 simulations and investigate the possibility to make use of this effect for the energy calibration of Al$_{2}$O$_{3}$ detectors at low energies. We further investigate the possibility of a shift in the expected energy scale of this effect caused by the creation of defects in the target crystal.
format	Preprint
id	arxiv_https___arxiv_org_abs_2506_09059
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Observation of a low energy nuclear recoil peak in the neutron calibration data of an Al$_{2}$O$_{3}$ crystal in CRESST-III CRESST Collaboration Angloher, G. Banik, S. Bento, A. Bertolini, A. Breier, R. Bucci, C. Burmeister, L. Casadei, F. Cipelli, E. Burkhart, J. Canonica, L. Dohm, J. Dominsky, F. Di Lorenzo, S. Einfalt, L. Erb, A. Fascione, E. Feilitzsch, F. v. Fichtinger, S. Fuchs, D. Ghete, V. M. Gorla, P. Guillaumon, P. V. Hauff, D. Ješkovský, M. Jochum, J. Kaznacheeva, M. Kluck, H. Kraus, H. von Krosigk, B. Langenkämper, A. Mancuso, M. Mauri, B. Mokina, V. Moore, C. Murali, P. Olmi, M. Ortmann, T. Pagliarone, C. Pattavina, L. Petricca, F. Potzel, W. Povinec, P. Pröbst, F. Pucci, F. Reindl, F. Rothe, J. Schäffner, K. Schieck, J. Schönert, S. Schwertner, C. Stahlberg, M. Stodolsky, L. Strandhagen, C. Strauss, R. Usherov, I. Valdenaire, D. Zanirato, M. Zema, V. Macko, M. Palušová, V. Instrumentation and Detectors Data Analysis, Statistics and Probability The current generation of cryogenic solid state detectors used in direct dark matter and CE\textnu NS searches typically reach energy thresholds of $\mathcal{O}$(10)$\,$eV for nuclear recoils. For a reliable calibration in this energy regime a method has been proposed, providing mono-energetic nuclear recoils at low energies $\sim\,$100$\,$eV$\,$-$\,$1$\,$keV. In this work we report on the observation of a peak at (1113.6$^{+6.5}_{-6.5}$)$\,$eV in the data of an Al$_{2}$O$_{3}$ crystal in CRESST-III, which was irradiated with neutrons from an AmBe calibration source. We attribute this mono-energetic peak to the radiative capture of thermal neutrons on $^{27}$Al and the subsequent de-excitation via single $γ$-emission. We compare the measured results with the outcome of Geant4 simulations and investigate the possibility to make use of this effect for the energy calibration of Al$_{2}$O$_{3}$ detectors at low energies. We further investigate the possibility of a shift in the expected energy scale of this effect caused by the creation of defects in the target crystal.
title	Observation of a low energy nuclear recoil peak in the neutron calibration data of an Al$_{2}$O$_{3}$ crystal in CRESST-III
topic	Instrumentation and Detectors Data Analysis, Statistics and Probability
url	https://arxiv.org/abs/2506.09059