Speaker
Dr
Philippe Di Stefano
(Queen's University)
Description
Hypothetical dark-matter particles could make up the bulk of the matter in the universe. Spherical gaseous detectors, like the one being planned by the NEWS-G experiment at SNOLAB, could investigate the existence of low-mass dark-matter particles. An important property to characterize is the quenching factor of such detectors, ie the ratio of signal created by the nuclear recoils expected to be induced by dark-matter particles, to that created by strongly-ionizing calibration particles. We report on the status of these measurements carried out at the COMIMAC facility in Grenoble, which allows to send electrons and ions of energy as low as 1 keV and below into a detector.
Author
Dr
Philippe Di Stefano
(Queen's University)
