Speaker
Dr
giomataris ioannis
(cea)
Description
The Spherical Proportional Detector is a new type of radiation detector based on a spherical geometry. It consists of a large spherical gas volume with a central electrode forming a radial electric field. A small spherical sensor located at the center is acting as a proportional amplification structure.
Combination of sub-keV energy threshold and versatility of the target (Ne, He, H) opens the way to search for ultra light dark matter WIMPs down to 100 MeV. Recent results obtained with a low radioactivity detector, 60 cm in diameter operated at LSM underground laboratory will be presented. First results with Ne as target nuclei, exclude above 4.4・10-37 cm2 for a 0.5 GeV/c2 WIMP.
The next project, under development, is a larger detector that consists of a selected pure copper sphere with a diameter of 1.4m to be installed at SNOLAB. This will allow benefiting from a 40 times larger volume, relative to the current detector and a much lower background level to reach unprecedented sensitivity in the range 100MeV to 1GeV.
Other potential applications for low energy neutrino physics will be also discussed.
Primary author
Dr
giomataris ioannis
(cea)
