The role of additives towards increasing the SIMPLE SDD lifetime

Morlat, T.; Limagne, D.; Waysand, G.; Collar, J. I.

doi:10.1016/j.nima.2005.12.202

Cited by 12 publications

(1 citation statement)

References 19 publications

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“…For t = 1 hour (the time required for the setting of the gel during cooling), ρ b (ρ 0 ) = 2 ×10 3 kg/m 3 (1.3 ×10 3 kg/m 3 ), r = 35 × 10 −6 m and D = 5 × 10 −2 m, this yields 0.13 kg/m/s. We have recently succeeded to produce a gel matrix, using the standard SIMPLE ingredients with the addition of agarose to modify the viscosity rather than density match, as well as shift upwards the sol-gel transition temperature [11], with a measured η = 0.17 kg/m/s. This has permitted production of a prototype CF 3 I-based SDD with 1-3 times the concentration of the SIMPLE devices.…”

Section: A Fabrication Considerationsmentioning

confidence: 99%

Heavy superheated droplet detectors as a probe of spin-independent WIMP dark matter existence

2007

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At present, application of Superheated Droplet Detectors (SDDs) in WIMP dark matter searches has been limited to the spin-dependent sector, owing to the general use of fluorinated refrigerants which have high spin sensitivity. Given their recent demonstration of a significant constraint capability with relatively small exposures and the relative economy of the technique, we consider the potential impact of heavy versions of such devices on the spin-independent sector. Limits obtainable from a CF3I-loaded SDD are estimated on the basis of the radiopurity levels and backgrounds already achieved by the SIMPLE and PICASSO experiments. With 34 kgd exposure, equivalent to the current CDMS, such a device may already probe to below 10 −6 pb in the spin-independent cross section. PACS numbers: 95.35.+d, 29.90.+r

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Section: A Fabrication Considerationsmentioning

confidence: 99%

Heavy superheated droplet detectors as a probe of spin-independent WIMP dark matter existence

2007

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Fabrication and response of high concentration SIMPLE superheated droplet detectors with different liquids

Felizardo

Morlat²,

Marques

et al. 2013

Astroparticle Physics

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a b s t r a c tThe combined measurement of dark matter interactions with different superheated liquids has recently been suggested as a cross-correlation technique in identifying WIMP candidates. We describe the fabrication of high concentration superheated droplet detectors based on the light nuclei liquids C 3 F 8 , C 4 F 8 , C 4 F 10 and CCl 2 F 2 , and investigation of their irradiation response with respect to C 2 ClF 5 . The results are discussed in terms of the basic physics of superheated liquid response to particle interactions, as well as the necessary detector qualifications for application in dark matter search investigations. The possibility of heavier nuclei SDDs is explored using the light nuclei results as a basis, with CF 3 I provided as an example.

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