First results of the ROSEBUD dark matter experiment

Citation
S. Cebrian et al., First results of the ROSEBUD dark matter experiment, ASTROPART P, 15(1), 2001, pp. 79-85
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
ASTROPARTICLE PHYSICS
ISSN journal
0927-6505 → ACNP
Volume
15
Issue
1
Year of publication
2001
Pages
79 - 85
Database
ISI
SICI code
0927-6505(200103)15:1<79:FROTRD>2.0.ZU;2-6
Abstract
ROSEBUD (Rare Objects SEarch with Bolometers UndergrounD) is an experiment which attempts to detect low mass weak interacting massive particles throug h their elastic scattering off Al and O nuclei. It consists of three small sapphire bolometers (of a total mass of 100 g) with NTD-Ge sensors in a dil ution refrigerator operating at 20 mK in the Canfranc Underground Laborator y. We report in this paper the results of several runs (of about 10 days ea ch) with successively improved energy thresholds, and the progressive backg round reduction obtained by improvement of the radiopurity of the component s and subsequent modifications in the experimental assembly, including the addition of old lead shields. Mid-term plans and perspectives of the experi ment are also presented. (C) 2001 Elsevier Science B.V. All rights reserved .