Abstract
Due to their excellent energy resolution values and the vast choice of possible materials, bolometric detectors are currently widely used in the physics of rare events. A limiting aspect for bolometers rises from their inability to discriminate among radiation types or surface from bulk events. It has been demonstrated that the main limitation to sensitivity for purely bolometric detectors is represented by surface alpha contaminations, causing a continuous background that cannot be discriminated. A new scintillation-based technique for the rejection of surface alpha background in non-scintillating bolometric experiments is proposed in this work. The idea is to combine a scintillating and a high sensitivity photon detector with a non-scintillating absorber. We present results showing the possibility to reject events due to alpha decay at or nearby the surface of the crystal.
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References
D.R. Artusa et al., Eur. Phys. J. C 74, 3096 (2014)
L. Cardani et al., J. Phys. 375, 042016 (2012)
C. Arnaboldi et al., Phys. Rev. C 78, (2008). doi:10.1103/PhysRevC.78.035502
D.R. Artusa et al., Eur. Phys. J. C 74, 2956 (2014)
J. B. Birks, Theory and Practice of Scintillation Counting (Pergamon Press, 1967)
S.K. Saraf et al., Nucl. Instrum. Methods Phys Res A 138, 451–454 (1990)
L. Canonica et al., Nucl. Instrum. Methods Phy. Res. A 732, 286–289 (2013)
Acknowledgments
The authors would like to thank G. Korga, A. Razeto and D. Sablone for useful discussions and help in the installation of light detectors, S. Pirro for providing light detectors and M. Guetti for technical support.
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Biassoni, M., Brofferio, C., Bucci, C. et al. Rejection of Alpha Surface Background in Non-scintillating Bolometric Detectors: The ABSuRD Project. J Low Temp Phys 184, 879–884 (2016). https://doi.org/10.1007/s10909-015-1464-x
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DOI: https://doi.org/10.1007/s10909-015-1464-x