Conveners
E4: Dark Matter and Rare Event Detectors
- Ben McAllister (Swinburne University of Technology)
Axions are a hypothetical elementary particle originally proposed as a result of the Peccei-Quinn solution to the Strong CP problem. With the right masses, axions are a compelling dark matter candidate and have been the subject of growing interest in recent years among the international dark matter detection community.
Generally, axion dark matter is very light – on the order of micro-eV...
A major global effort is currently underway to obtain radiopure argon for DarkSide-20k (DS-20k), the first large-scale detector of the Global Argon Dark Matter Collaboration (GADMC). The Urania project aims to extract underground argon (UAr) from CO2 wells in the USA at a production rate of approximately 300 kg/day. Additional chemical purification of the UAr will be necessary before it can be...
There is a compelling physics case for a large, xenon-based underground detector devoted to dark matter and other rare-event searches. A two-phase time projection chamber as inner detector allows for a good energy resolution, a three-dimensional position determination of the interaction site and particle discrimination. To study challenges related to the construction and operation of a...
NEWS-G is an experiment searching for dark matter using the Spherical Proportional Counter (SPC) technique. Such detectors can operate significant mass of target, of order of kgs with meter size spheres, while keeping single ionization electron detection sensitivity. They can be filled with gaseous targets of low atomic mass such as hydrogen, helium, and neon, giving sensitivity to low mass...
As noble liquid time projection chambers get larger, so does the high voltage (HV) requirements required to maintain strong electric drift fields. HV feedthrough (FT) designs become increasingly complex given limitations imposed by cryogenic temperatures, HV, and cryostat geometry. In this talk, progress on a novel HV FT using a coextruded multi-layered coaxial cable is presented for...
The NEWS-G experiment is a dark matter experiment based on gaseous detectors, located at SNO lab. The experiment aims to detect WIMPs by measuring nuclear recoils in noble gases using a spherical proportional counter (SPC) detector, which offers high sensitivity due to its unprecedented low energy threshold. Accurate measurement of the recoil energy requires knowledge of the quenching factor...
