Conveners
M4-3 Dark Matter I (PPD) | Matière sombre I (PPD)
- Tony Noble (Queens University)
The SuperCDMS experiment is a leading experiment in the direct search for Weakly Interacting Massive dark matter Particles (WIMPs) focusing on masses below about 10 GeV/c^2. The search method is based on deploying ultra-pure germanium and silicon detectors at cryogenic temperatures in a well-shielded environment. The WIMPs are detected via lattice vibrations induced by their elastic scattering...
The 40K isotope is the only known example of a unique-third forbidden transition. Its branching ratio directly to the ground state of 40Ar through electron capture has never been experimentally measured. This branching ratio will help with understanding the background in the DAMA/LIBRA experiment and other dark matter searches. “KDK” is the name of an international collaboration that is...
The search for particle dark matter is one of the most active fields in physics, with many experiments using different methods to search for possible dark matter candidates. Direct-detection experiments look for rare interactions between some detector mass and these dark matter particles. The DAMA/LIBRA experiment utilizes Thallium-doped Sodium Iodide (NaI(Tl)) crystals at room temperature to...
The NEWS-G collaboration is developing new detectors sensitive to low mass WIMPs. The detector is made of a spherical copper vessel filled with gas and radial electric field. The electric field is induced by a sensor bring to the middle of the sphere. Detector behaviour like stability on time or homogeneity are strongly correlated to sensor characteristics and gas quality. This talk will focus...
Spherical gaseous particle detectors being developed with the NEWS-G collaboration are a new type of dark matter detector being used to detect low-mass WIMPs (Weakly Interacting Massive Particles). They consist of a metal sphere filled with gas, with a central electrode producing a radial electric field throughout. Incident particles ionize some of the gas, the charge from which creates a...
Astronomers have observed, through galaxy rotation curves, that our understanding of the dynamics at the scale of galaxies is rather incomplete; these observations amongst others led to the conclusion that there is something missing in our model or lacking in our understanding of the universe. A possible solution is the addition of dark matter, which can only interact very weakly and through...
An analysis algorithm is being developed for the DEAP-3600 dark matter search in order to correct the effects of signal saturation on key observables in the experiment. High energy events, such as alpha decays and some gamma decays, can produce enough scintillation photons to saturate the electronics in the signal-digitization stage. For this reason, a second channel of digitizers operated at...
