Recent Performance of Scintillating Bolometers Developed for Dark Matter Searches
Recent Performance of Scintillating Bolometers Developed for Dark Matter Searches
Journal of Low Temperature Physics. 2008, Vol. 151(2008), p. 848-2008.
Scintillating bolometers of sapphire, BGO and LiF have been recently
tested both at the Institut d’Astrophysique Spatiale (IAS) and the Laboratorio Subterráneo
de Canfranc (LSC) in the frame of the ROSEBUD collaboration. We report
on their response to different particles (α, β, γ and nuclear recoils) both in the heat
and light channel. Signal output parameters for the different particles have been compared.
We have focused on the study of the nuclear recoils discrimination against
β/γ background events at low energy. The β/γ and nuclear recoil spectra obtained
in the different runs are shown and analyzed. We also discuss the sensitivity of the
LiF bolometer for measuring thermal neutron flux at LSC.
Scintillating bolometers of sapphire, BGO and LiF have been recently
tested both at the Institut d’Astrophysique Spatiale (IAS) and the Laboratorio Subterráneo
de Canfranc (LSC) in the frame of the ROSEBUD collaboration. We report
on their response to different particles (α, β, γ and nuclear recoils) both in the heat
and light channel. Signal output parameters for the different particles have been compared.
We have focused on the study of the nuclear recoils discrimination against
β/γ background events at low energy. The β/γ and nuclear recoil spectra obtained
in the different runs are shown and analyzed. We also discuss the sensitivity of the
LiF bolometer for measuring thermal neutron flux at LSC.