Speaker
Description
In the Fall of 2019, the NEWS-G experiment used its latest detector, a 140 cm diameter Spherical Proportional Counter (SPC) to search for low-mass dark matter at the Laboratoire souterrain de Modane (LSM), in France. Having the sphere filled with pure methane, hydrogen was used as the target to produce new limits on the spin-dependent cross-section around masses of 1 GeV.
This talk will first describe the commissioning at the LSM with the shielding used, the SPC detection principle and the new multi-anode sensor. It will then focus on the energy calibration using a UV laser and argon-37, as well as the background discrimination methods to remove alpha-induced events and electronic spike signals. The talk will conclude with a presentation of recent results from NEWS-G and the status of the current commissioning of the detector at SNOLAB.
| Your Email | jeanmarie.coquillat@queensu.ca |
|---|---|
| Supervisor | Guillaume Giroux |
| Supervisor Email | ggiroux@owl.phy.queensu.ca |
| Funding Agency | Arthur B. McDonald Canadian Astroparticle Physics Research Institute |
