Quenching Factor estimation of Na recoils in NaI(Tl) crystals using a 
low-energy pulsed neutron beam measurement

Bharadwaj, Mukund Raghunath; Angloher, G.; Barbeau, P.S.; Dafinei, I.; Di Marco, N.; Einfalt, L.; Ferroni, F.; Fichtinger, S.; Filipponi, A.; Frank, T.; Friedl, M.; Fuss, A.; Ge, Z.; Hedges, S.; Heikinheimo, M.; Huitu, K.; Kellermann, M.; Maji, R.; Mancuso, M.; Pagnanini, L.; Petricca, F.; Pirro, S.; Pröbst, F.; Profeta, G.; Puiu, A.; Reindl, F.; Schäffner, K.; Schieck, J.; Schmiedmayer, D.; Schwertner, C.; Stahlberg, M.; Stendahl, A.; Stukel, M.; Wagner, F.; Yue, S.; Zema, V.; Zhu, Y.

doi:10.21468/SciPostPhysProc.12.028

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Quenching Factor estimation of Na recoils in NaI(Tl) crystals using a low-energy pulsed neutron beam measurement

MPS-Authors

Bharadwaj, Mukund Raghunath
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Angloher, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Barbeau, P.S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Dafinei, I.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Di Marco, N.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Einfalt, L.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ferroni, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Fichtinger, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Filipponi, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Frank, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Friedl, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Fuss, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ge, Z.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Hedges, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Heikinheimo, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Huitu, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kellermann, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Maji, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Mancuso, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pagnanini, L.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Petricca, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pirro, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pröbst, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Profeta, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Puiu, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Reindl, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schäffner, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schieck, J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schmiedmayer, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schwertner, C.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Stahlberg, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Stendahl, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Stukel, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Wagner, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Yue, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Zema, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Zhu, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Citation

Bharadwaj, M. R., Angloher, G., Barbeau, P., Dafinei, I., Di Marco, N., Einfalt, L., et al. (2023). Quenching Factor estimation of Na recoils in NaI(Tl) crystals using a low-energy pulsed neutron beam measurement. SciPost Phys. Proc, 12, 028.

Cite as: https://hdl.handle.net/21.11116/0000-000F-1252-0

Abstract

NaI(Tl) based scintillation detectors have become a staple in the field of direct dark matter searches, with the DAMA-LIBRA experiment being the standout for its reported observation of an annually modulating WIMP-like signal which is in direct contrast with other results. In order to accurately calibrate the energies of WIMP-induced nuclear recoil signals, precise measurements of the quenching factor of the NaI crystals are essential for each of these experiments, as it is well established that electron recoils and nuclear recoils have dissimilar scintillation light yields. In this contribution, we present first preliminary results of an ongoing systematic study that has been carried out by the COSINUS collaboration and Duke University to measure the quenching factor of Na recoils. Five ultra-pure NaI crystals, manufactured by the Shanghai Institute for Ceramics, each of which have varying Tl dopant concentrations, were irradiated with a mono-energetic neutron beam at the Triangle Universities National Laboratory, North Carolina, USA to extract the quenching factor values in the low recoil energies of 1-30keVnr.