Author/Authors :
Pécourt، نويسنده , , S. and Berkes، نويسنده , , I. and Bobin، نويسنده , , C. and Coron، نويسنده , , N. and de Jesus، نويسنده , , M. and Hadjout، نويسنده , , J.-P. and Leblanc، نويسنده , , J. and Marcillac، نويسنده , , P.de، نويسنده ,
Abstract :
A first characterization of a 1100 g sapphire bolometer, performed at sea level and at a working temperature of 40 mK, is presented. Despite perturbations coming from the high-radioactive background and cosmic rays, calibration spectra could be achieved with an internal α source and a 57Co γ-ray source: the experimental threshold is 25 keV, while the FWHM resolution is 17.4 keV for the 122 keV peak. Possible heat release effects are discussed, and a new limit of 9×10−14 W/g is obtained for sapphire.
