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Rejection of Surface Background in Thermal Detectors

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Abstract

A challenging aspect of the next generation detector for rare events searches (i.e. neutrinoless double beta decay and dark matter searches) is the reduction of the background in the region of interest that can mimic the expected signals. In the field of thermal detectors, which have a leading role in rare events searches thanks to their excellent energy resolution and to the wide choice of absorber materials, the background coming from surface contaminations is frequently dominant. A background surface rejection detector is a scintillation-based approach for tagging this type of background. We discuss the innovative application of this technique in non-scintillating thermal detectors. We will report on the performances of the prototype bolometric detector, realized to prove the feasibility of this new technique.

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Acknowledgments

We would like to thank M. Pedretti and W. Seidel for useful discussions and S. Pirro and L. Cardani for constructive help in various stages of this experiment. This work was supported by the 5th Commission of the Istituto Nazionale di Fisica Nucleare (INFN).

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Authors and Affiliations

  1. Laboratori Nazionali del Gran Sasso, INFN, Assergi, AQ, Italy

    L. Canonica, C. Bucci, S. Calvano, M. L. Di Vacri & P. Gorla

  2. Università di Milano Bicocca e INFN Sezione di Milano Bicocca, Milano, Italy

    M. Biassoni, C. Brofferio & M. Pavan

  3. Los Alamos National Laboratory, Los Alamos, NM, USA

    J. Goett

  4. Brookhaven National Laboratory, Upton, NY, USA

    M. Yeh

Authors
  1. L. Canonica
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  2. M. Biassoni
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  3. C. Brofferio
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  4. C. Bucci
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  5. S. Calvano
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  6. M. L. Di Vacri
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  7. J. Goett
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  8. P. Gorla
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  9. M. Pavan
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  10. M. Yeh
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Correspondence to L. Canonica.

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Canonica, L., Biassoni, M., Brofferio, C. et al. Rejection of Surface Background in Thermal Detectors. J Low Temp Phys 176, 898–904 (2014). https://doi.org/10.1007/s10909-014-1152-2

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  • DOI: https://doi.org/10.1007/s10909-014-1152-2

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