Conveners
Session 13: Direct dark matter detection: status of current experiments-2
- Cristiano Galbiati (Princeton University)
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Robert Calkins (Southern Methodist University)23/02/2018, 10:30Talk
Improvements in detector technologies have allowed direct detection experiments access to lower detection thresholds. In the case of the SuperCDMS Soudan experiment, this additional reach has been facilitated by applying strong electric potentials across each detector and taking advantage of the Neganov-Trofimov-Luke (NTL) effect to amplify ionization signals. For dark matter models with...
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Ken Clark (SNOLAB)23/02/2018, 10:45Talk
The PICO collaboration uses bubble chambers to search for dark matter with results leading the world in sensitivity to the direct detection of WIMPs with spin-dependent coupling to protons. PICO recently operated a 32 litre bubble chamber (PICO-60) at the SNOLAB underground laboratory and currently has a 40 litre detector under construction. This new device (PICO-40L) will demonstrate the...
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Shawn Westerdale (Carleton University)23/02/2018, 11:00Talk
DEAP-3600 is a single phase dark matter detector filled with 3.3 tonnes of liquid argon (LAr). The active volume is viewed by an array of 255 PMTs, separated from the LAr by 50 cm of acrylic. The whole detector is submerged in a large cylindrical water Cherenkov detector, which acts as a muon veto. DEAP-3600 began operations in May 2016, and has been running stably since November 2016....
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Christian Regenfus (Eidgenoessische Technische Hochschule Zuerich (ETHZ) (CH))23/02/2018, 11:15Talk
The ArDM experiment, installed in the Canfranc underground laboratory LSC in Spain, is the first tonne-scale dual phase Liquid Argon detector designed for direct Dark Matter detection. Due to its size it represents an important milestone in the world wide effort for the development of large LAr Dark Matter detectors. The results from a commissioning run in the single phase operational mode...
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Prof. Alvaro Chavarria (University of Washington)23/02/2018, 11:30Talk
Millimeter-thick charge-coupled devices (CCDs) are outstanding particle detectors. Although initially developed for near-infrared astronomy, the low pixel noise also makes them the most sensitive detectors to signals from ionizing radiation. By virtue of their very low energy threshold (<100 eV of ionizing energy) and their unique capabilities for background characterization based on their...
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Reina Maruyama23/02/2018, 11:45Talk
Astrophysical observations give overwhelming evidence for the existence of dark matter. While the DAMA collaboration asserts that they observe a dark matter-induced annual modulation signal in their NaI(Tl)-based detectors, their signal has not been confirmed. DAMA's observations are inconsistent with those from other direct detection dark matter experiments under most assumptions of dark...
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Prof. Marisa Sarsa (University of Zaragoza)23/02/2018, 12:00Talk
Detecting the elusive WIMPs (Weakly Interacting Massive Particles) proposed to explain the dark matter has shown to be a very challenging effort. The study of distinctive features in the WIMP signal allowing disentangling it from other backgrounds is an important asset in this search. The motion of the Earth around the Sun will produce a modulation in the dark matter interaction rate along the...
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Burkhant Suerfu (Princeton University)23/02/2018, 12:15Talk
SABRE is an experiment that is being developed to search for dark matter with an array of NaI(Tl) scintillating crystals. A primary goal is to test the DAMA-LIBRA modulation signal claimed to be evidence for dark matter. The experiment will employ NaI(Tl) crystals with low levels of internal radioactivity in an active shield of liquid scintillator and water. In the past two years SABRE has...
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