Conveners
W3-6 ML in HEP and Rare Background Searches (PPD) | Apprentissage automatique en PHE et recherche d'interférences rares (PPD)
- Matthias Danninger (Simon Fraser University (CA))
DEAP-3600 is a single-phase dark matter detector that uses liquid argon scintillation to search for spin-independent weakly interacting massive particles (WIMPs).
Identifying background events is vital in WIMP searches due to the extremely small WIMP-nucleon interaction probability. To precisely model backgrounds, pileup—multiple interactions happening in a single event—must be understood. ...
Radon provides one of the most significant backgrounds in low background experiments since it is an inevitable product of natural uranium and thorium. It is continuously emanated from materials and is noise to rare event particle detectors especially dark matter search experiments because of the alpha decays from the subsequent Po-218, Po-214, and Po-210. A radon emanation detection system,...
Mitigation of background events in liquid argon induced by alpha decays is important for detectors searching for Weakly Interacting Massive Particles (WIMP), theoretically motivated dark matter candidates. The quenching of alpha scintillation light must be understood to correctly account for and mitigate backgrounds from alpha particles. This work aims to measure the alpha quenching factor for...
Understanding the sensitivity of ultrasensitive detectors used in dark matter research requires equally sensitive calibration facilities. The 4.8 keV neutron beam at the Université de Montréal tandem accelerator facility is being upgraded with boron-loaded neutron detectors to provide neutron scatter recoils at energies below 100 eV. This capability is required to characterize the cryogenic...
SiPMs are photodetectors capable of single photon counting and are widely used in particle physics experiments, like neutrino or dark matter detectors. One of the biggest issues in developing new SiPMs is considering their optical crosstalk levels. Its characterization and understanding are of extreme importance for future detector development.
In this work, we develop a simulation based on...
