Sapphire, BGO and LiF scintillating bolometers developed for dark matter experiments
Sapphire, BGO and LiF scintillating bolometers developed for dark matter experiments.
PoS(idm2008)007
ROSEBUD (Rare Objects Search with Bolometers UndergrounD) is a collaboration focused on
the development of scintillating bolometers for WIMP (Weakly Interacting Massive Particles)
searches. In this work we present the results of tests performed with three small scintillating
bolometers (50 g sapphire, 46 g BGO and 33 g LiF) used simultaneously in the same set-up and
external background conditions at the Canfranc Underground Laboratory (LSC). Sapphire and
BGO have been studied as possible dark matter targets. We analyze their particle discrimination
capability with special stress in the discrimination between nuclear recoils and b /g background
events at low energy. Nuclear recoil spectra obtained simultaneously in both detectors are shown
and discussed. The BGO bolometer has also been used as a g -ray spectrometer (profiting from its
high atomic number content) to analyze and control external b /g background in the experiment.
LiF scintillating bolometers could be applied through the 6Li (n,a) reaction to monitor neutron
flux inside the experimental set-up.
ROSEBUD (Rare Objects Search with Bolometers UndergrounD) is a collaboration focused on
the development of scintillating bolometers for WIMP (Weakly Interacting Massive Particles)
searches. In this work we present the results of tests performed with three small scintillating
bolometers (50 g sapphire, 46 g BGO and 33 g LiF) used simultaneously in the same set-up and
external background conditions at the Canfranc Underground Laboratory (LSC). Sapphire and
BGO have been studied as possible dark matter targets. We analyze their particle discrimination
capability with special stress in the discrimination between nuclear recoils and b /g background
events at low energy. Nuclear recoil spectra obtained simultaneously in both detectors are shown
and discussed. The BGO bolometer has also been used as a g -ray spectrometer (profiting from its
high atomic number content) to analyze and control external b /g background in the experiment.
LiF scintillating bolometers could be applied through the 6Li (n,a) reaction to monitor neutron
flux inside the experimental set-up.