5–11 Jun 2022
McMaster University
America/Toronto timezone
Welcome to the 2022 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2022!

(G*) The NEWS-G light Dark Matter search experiment: Current status and preparation for experiment at SNOLAB

6 Jun 2022, 16:00
15m
MDCL 1309 (McMaster University)

MDCL 1309

McMaster University

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Particle Physics / Physique des particules (PPD) M3-8 Dark Matter Experiment II (PPD) | Experiences de matière sombre II (PPD)

Speaker

Mr Daniel Durnford (University of Alberta)

Description

The NEWS-G direct dark matter search experiment uses spherical proportional counters (SPC) with light noble gases to explore low WIMP masses. The first results obtained with an SPC prototype operated with neon gas at the Laboratoire Souterrain de Modane (LSM) have already set competitive results for low-mass WIMPs. The next phase of the experiment consists of a large 140 cm diameter SPC installed at SNOLAB with a new sensor design, lots of improvements in detector performance and data quality. Before its installation at SNOLAB, the detector was commissioned with pure methane gas at the LSM, with a temporary water shield, offering a hydrogen-rich target and reduced backgrounds. After giving an overview of the several improvements of the detector, preliminary results of this campaign will be presented, including UV laser and Ar-37 calibrations that allowed for precision characterization of the detector’s energy response at the single-ionization regime.

Primary author

Mr Daniel Durnford (University of Alberta)

Co-author

Marie-Cécile Piro (University of Alberta)

Presentation materials