Title of article
Measurement of the response of heat-and-ionization germanium detectors to nuclear recoils
Author/Authors
Benoit، نويسنده , , A. and Bergé، نويسنده , , L. and Blümer، نويسنده , , J. and Broniatowski، نويسنده , , A. and Censier، نويسنده , , B. and Chantelauze، نويسنده , , A. and Chapellier، نويسنده , , M. and Chardin، نويسنده , , G. and Collin، نويسنده , , S. and Defay، نويسنده , , X. and De Jésus، نويسنده , , M. and Deschamps، نويسنده , , H. and Di Stefano، نويسنده , , P. and Dolgorouky، نويسنده , , Y. and Dumoulin، نويسنده , , L. and Eitel، نويسنده , , K. and Fesquet، نويسنده , , M. and Fiorucci، نويسنده , , S. and Gascon، نويسنده , , J. and Gerbier، نويسنده , , G. and Goldbach، نويسنده , , C. and Gros، نويسنده , , M. and Horn، نويسنده , , M. and Juillard، نويسنده , , A. and Lemrani، نويسنده , , R. and de Lesquen، نويسنده , , A. and Luca، نويسنده , , M. and Marnieros، نويسنده , , S. and Mosca، نويسنده , , L. and Navick، نويسنده , , X.-F. and Nollez، نويسنده , , G. and Olivieri، نويسنده , , E. and Pari، نويسنده , , P. and Sanglard، نويسنده , , V. and Schoeffel، نويسنده , , L. and Schwamm، نويسنده , , F. and Stern، نويسنده , , M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
11
From page
558
To page
568
Abstract
The heat quenching factor Q ′ (the ratio of the heat signals produced by nuclear and electron recoils of equal energy) of the heat-and-ionization germanium bolometers used by the EDELWEISS collaboration has been measured. It is explained how this factor affects the energy scale and the effective quenching factor observed in calibrations with neutron sources. This effective quenching effect is found to be equal to Q / Q ′ , where Q is the quenching factor of the ionization yield. To measure Q ′ , a precise EDELWEISS measurement of Q / Q ′ is combined with values of Q obtained from a review of all available measurements of this quantity in tagged neutron beam experiments. The systematic uncertainties associated with this method to evaluate Q ′ are discussed in detail. For recoil energies between 20 and 100 keV, the resulting heat quenching factor is Q ′ = 0.91 ± 0.03 ± 0.04 , where the two errors are the contributions from the Q and Q / Q ′ measurements, respectively. The present compilation of Q values and evaluation of Q ′ represent one of the most precise determinations of the absolute energy scale for any detector used in direct searches for WIMP dark matter.
Keywords
Nuclear recoil quenching , Bolometer , Heat-and-ionization detector , WIMP dark matter direct search
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2007
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2206532
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