Published May 1996 | Version v1
Journal article

First results of the EDELWEISS experiment

  • 1. Institut d'Astrophysique Spatiale, Universite Paris XI, 91405 Orsay Cedex (France)
  • 2. Institut d'Astrophysique de Paris, CNRS, 75 Paris (France)
  • 3. Laboratoire Souterrain de Modane, 90 Rue de Polset, 73500 Modane (France)
  • 4. CEA-CE Saclay, DRECAM/SPEC, Orme des Merisiers, 91191 Gif-sur-Yvette Cedex (France)
  • 5. CEA-CE Saclay, DAPNIA, Service de Physique des Particules, Bat 141, 91191 Gif-sur-Yvette Cedex (France)
  • 6. Institut de Physique Nucleaire de Lyon, Universite C. Bernard Lyon I and IN2P3, 69622 Villeurbanne Cedex (France)
  • 7. CSNSM, Bat 108, 91405 Orsay Campus (France)
  • 8. LPC College de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)

Description

We ran a 24 g Sapphire bolometer, deep underground, in a selected environment for low radioactivity. The experimental setup is quickly described. The energy spectrum was measured down to 4 keV. Preliminary analysis based on 160 hours of effective running time exhibits a one order of magnitude decrease in the radioactive background level at energy between 10 and 20 keV relative to the previous attempt in 1991. However, the event rate is still two orders of magnitude higher than the best detectors at these energies. We are currently working at identifying the origin of the radioactive contaminants and developing new bolometers. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Physics. B, Proceedings Supplements
Journal Volume
48
Journal Page Range
p. 77-79.
ISSN
0920-5632
CODEN
NPBSE7

Conference

Title
4. international workshop on theoretical and phenomenological aspects of underground physics (TAUP-4).
Dates
17-21 Sep 1995.
Place
Toledo (Spain).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
27054165
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BACKGROUND RADIATION; BOLOMETERS; COUNTING RATES; ENERGY SPECTRA; LOW LEVEL COUNTING; RADIATION DETECTION; RADIOACTIVITY; UNDERGROUND
Descriptors DEC
COUNTING TECHNIQUES; DETECTION; LEVELS; MEASURING INSTRUMENTS; RADIATIONS; SPECTRA