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The ROSEBUD experiment at Canfranc: 2001 report | | S. Cebrian
; N. Coron
; G. Dambier
; E. Garcia
; I.G. Irastorza
; J. Leblanc
; P. de Marcillac
; A. Morales
; J. Morales
; A. Ortiz de Solorzano
; J. Puimedon
; M.L. Sarsa
; J.A. Villar
; | | Date: |
12 Dec 2001 | | Journal: | Nucl.Phys.Proc.Suppl. 110 (2002) 97-99 | | Subject: | astro-ph | | Affiliation: | 2,3), A. Morales , J. Morales , A. Ortiz de Solorzano , J. Puimedon , M.L. Sarsa , J.A. Villar ( Laboratorio de Fisica Nuclear y altas energias, Universidad de Zaragoza, Spain, Institut d’Astrophysique Spatiale, CNRS, Orsay, France, Correspon | | Abstract: | The ROSEBUD experiment for Direct Dark Matter detection settled in 1999 in the Canfranc Underground Laboratory. The first phase of the experiment was dedicated to the understanding and reduction of the radioactive background following successive removals of the radioimpure materials. Sapphire (25g, 50g) and germanium (67g) absorbers were used. Thresholds respectively lower than 1keV and 450 eV were achieved on these detectors. The second phase of the experiment plans to use scintillating bolometers to discriminate between recoiling nuclei and electrons. Prototypes using commercial CaWO4 (54g) and BGO (46g) were designed for this purpose. While internal contamination was found and identified in both targets, neutron calibrations revealed their high discrimination power. A 6 keV threshold on the heat channel of the BGO bolometer points out the interest of such a novel material, for Dark Matter research on neutralinos having spin-dependent or spin-independent interactions. | | Source: | arXiv, astro-ph/0112272 | | Services: | Forum | Review | PDF | Favorites | |
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