Conveners
Evening 3 - Dark Matter Searches
- Erica Caden (SNOLAB)
Description
Detectors for dark matter searches
What is the nature of dark matter? This fundamental question, which seeks to uncover its properties, composition, and origin, remains one of the greatest enigmas in modern physics. Despite direct detection experiments achieving unprecedented sensitivity — some even capable of detecting solar neutrinos — the mystery persists. Weakly Interacting Massive Particles (WIMPs) have long been a leading...
The NEWS-G (New Experiments With Spheres-Gas) uses a spherical proportional counter to search for low-mass dark matter at the SNOLAB underground laboratory. Radon, a significant source of contamination for the NEWS-G detector and other rare event search detectors, requires effective mitigation strategies. This talk presents the performance of a novel radon trap using silver zeolite, which...
The TRIUMF electron linear accelerator (e-Linac) will be the second driver beam for nuclear isotope production at the Advanced Rare IsotopE Laboratory (ARIEL). This particle accelerator will produce radioisotopes in the neutron rich region of the nuclear landscape via photofission, whose yields strongly depend on the incident beam energy. To date, the e-Linac has been commissioned up to 10kW...
The Cherenkov fiber-based safety shut-off system developed for the ARIEL e-Linac at TRIUMF provides a scalable and cost-effective solution for monitoring beam losses and scattering events, addressing limitations of traditional systems such as large ionization chambers (LICs) and photomultiplier tubes (PMTs) with Bismuth Germanate (BGO) crystals. LICs are bulky and unsuitable for spatially...
The Scintillating Bubble Chamber (SBC) collaboration is combining the well-established technologies of bubble chambers and liquid noble scintillators to develop a detector sensitive to low-energy nuclear recoils with the goal of a GeV-scale dark matter search. Liquid noble bubble chambers benefit from excellent electronic recoil suppression intrinsic in bubble chambers with the addition of...
Here we present an experimentally verified model for characterising the photodetection efficiency of silicon photomultipliers (SiPMs). This work has been performed in the context of improving detector response for any SiPM based experiment requiring accurate photon simulations. The model is based on comprehensive measurements of photon detection efficiency for two UV sensitive Hamamatsu and...
