Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-05-03
NewJ.Phys.2:14,2000
Astronomy and Astrophysics
Astrophysics
19 pages, 10 figures included. New Journal of Physics, in press
Scientific paper
10.1088/1367-2630/2/1/14
SIMPLE 2000 (Superheated Instrument for Massive ParticLE searches) will consist of an array of eight to sixteen large active mass ($\sim15$ g) Superheated Droplet Detectors(SDDs) to be installed in the new underground laboratory of Rustrel-Pays d'Apt. Several factors make of SDDs an attractive approach for the detection of Weakly Interacting Massive Particles (WIMPs), namely their intrinsic insensitivity to minimum ionizing particles, high fluorine content, low cost and operation near ambient pressure and temperature. We comment here on the fabrication, calibration and already-competitive first limits from SIMPLE prototype SDDs, as well as on the expected immediate increase in sensitivity of the program, which aims at an exposure of $>$25 kg-day during the year 2000. The ability of modest-mass fluorine-rich detectors to explore regions of neutralino parameter space beyond the reach of the most ambitious cryogenic projects is pointed out.
Collar Juan I.
Girard T. A.
Limagne D.
Miley Harry S.
Puibasset J.
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