2026 CAP Congress / Congrès de l'ACP 2026

Session

(DAPI) T2-1 | (DPAI)

T2-1

23 Jun 2026, 14:15

U. Ottawa - Learning Crossroads (CRX) Building

594. Radon-222 Screening Capability and Research at SNOLAB

Nasim Fatemighomi (SNOLAB)

23/06/2026, 14:15

Applied Physics and Instrumentation / Physique appliquée et de l'instrumentation (DAPI / DPAI)

Invited Speaker / Conférencier(ère) invité(e)

Radon-222 is a limiting background in many leading dark matter and low-energy neutrino experiments. At SNOLAB, we have various radon instruments dedicated to material screening and to the measurement of radon concentration in N₂ gas systems and in ultra-pure water. My talk will focus on describing these instruments. In addition, it will describe a recent development aimed at improving our N₂...

690. Radon measurement in a low-background experiment using a hybrid trapping system

Hantz Nozard (Université de Montréal)

23/06/2026, 14:45

Applied Physics and Instrumentation / Physique appliquée et de l'instrumentation (DAPI / DPAI)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

A new hybrid system for trapping radon-222 emitted by an object is proposed. This text presents the calibration steps carried out at SNOLAB facility concerning low radon concentrations (~ µBq/m³). High-sensitivity background noise measurement is required in dark matter experiments to ensure that the system meets the projected noise limit (0.1 event/year for the PICO experiment). Indeed, radon...

505. Improving SNOLAB Radon counting sensitivity with low-background ZnS

Peter Qin (SNOLAB)

23/06/2026, 15:00

Applied Physics and Instrumentation / Physique appliquée et de l'instrumentation (DAPI / DPAI)

Oral Competition (Undergraduate Student) / Compétition orale (Étudiant(e) du 1er cycle)

Rn-222 progeny produce unwanted background events in underground rare-event searches including those for dark matter and neutrinoless double beta decay. ZnS(Ag)-coated Lucas cells were used during the SNO experiment to evaluate Radon emanation into light water and continue to be used for ex-situ measurements of Radon concentration in SNO+ and at SNOLAB for materials assays. Support for current...

951. Study on the seasonal variation of indoor radon levels across Canada

Robert Stainforth (Health Canada, Government of Canada)

23/06/2026, 15:15

Applied Physics and Instrumentation / Physique appliquée et de l'instrumentation (DAPI / DPAI)

Oral (Non-Student) / Orale (non-étudiant(e))

Radon, a naturally occurring radioactive gas present in our homes, is the leading cause of lung cancer among non-smokers. With nearly 1 in 5 Canadian homes exceeding Health Canada’s radon guideline level of 200 Bq/m3, radon exposure remains a critical public health issue that is responsible for over 3,000 lung cancer deaths annually in Canada. As part of its National Radon Program, Health...