Conveners
Parallel 1A - Direct detection I
- Vanessa Zema
Parallel 1A - Direct detection I
- Matthew Jake Stukel (Gran Sasso Science Institute)
The DAMIC-M (DArk Matter In CCDs at Modane) experiment employs thick, fully depleted Si charged-coupled devices (CCDs) to search for dark matter particles with a target exposure of 1 kg-year. A novel skipper readout implemented in the CCDs provides single electron resolution through multiple non-destructive measurements of the individual pixel charge, pushing the detection threshold to the...
The DAMIC experiment employs large area, thick charge-coupled devices (CCDs) to search for the interactions of low-mass dark matter (DM) particles in the galactic halo with silicon atoms in the CCD target. The low pixel noise provides DAMIC with sensitivity to ionization signals of only a few charges, for a remarkably low energy threshold. From 2017 to 2019, DAMIC collected dark-matter search...
SENSEI (Sub-Electron Noise Skipper Experimental Instrument) is the first dedicated direct-detection experiment using Skipper-CCD sensors to look for low-mass Dark Matter candidates that interact with electrons. Skipper-CCDs are able to make multiple non-destructive measurements of the pixel’s charge and use this information to reduce the readout noise to a negligible level to resolve single...
The Oscura experiment will deploy a very-large array of novel silicon skipper Charge Coupled Devices (CCDs) to search for low-mass dark matter (DM). Skipper-CCDs deliver sub-electron readout noise for millions of pixels, providing an ideal detector for low-threshold rare event searches for DM-electron interactions. The Oscura instrument will consist of ~10 kg of skipper-CCDs and aims to...
Direct-detection experiments searching for dark matter-nucleon interactions with a charge-based readout are commonly calibrated using sources interacting with the electron of the detector target.
But nuclear and electron interactions produce a different amount of charge for the same energy deposition.
Therefore, the precise knowledge of the nuclear recoil ionization yield is essential for...
For optimal sensitivity to low-mass dark matter candidates experiments
like DAMIC-M employ skipper charged-coupled devices (CCDs) with detection
threshold of just a few ionization charges. Ionization signals from
small-angle Compton scatters of environmental gamma-rays - an important
component of the background in dark matter searches – must thus be
characterized down to O(10 eV) energy....
The Edelweiss collaboration performs light Dark Matter (DM) particles searches with germanium bolometer collecting
charge and phonon signals. Thanks to the Neganov-Trofimov-Luke (NTL) effect, a RMS resolution of 4.46 electron-hole pairs
was obtained on a massive (200g) germanium detector instrumented with a NbSi Transition Edge Sensor (TES) operated underground at the Laboratoire Souterrain...
The SuperCDMS SNOLAB experiment is a direct dark matter search experiment with expected world-leading sensitivity to dark matter particles with masses $\leq 10$\,GeV$/c^{2}$. Currently under construction at the SNOLAB facility in Sudbury, Canada, the experiment will have an initial payload of 24 cryogenic germanium and silicon detectors that are able to detect sub-keV energy depositions. Two...
The CRESST experiment (Cryogenic Rare Event Search with Superconducting Thermometers) is searching for nuclear recoils induced by dark matter particles in cryogenic detectors employing different target materials. With their sensitivity to energy depositions of nuclear recoils of less than 100 eV, these detectors are particularly well suited to study low mass dark matter particles. The main...
Cryogenic Rare Event Search with Superconducting Thermometers (CRESST) is an experiment designed to detect the direct dark matter (DM) interactions with scintillating crystals. The experiment is situated in a low-background underground facility in Laboratori Nazionali del Gran Sasso (LNGS). CRESST employs scintillating cryogenic calorimeters to measure the recoil energy of DM-nucleus...
In recent years numerous experiments have started to probe the sub-GeV dark matter (DM) mass region. In order to detect such light DM particle masses, detectors with a low energy threshold are required.
Recent developments in the growth processes of diamond crystals allow for the production of high-quality large-mass diamond detectors that can be used for astroparticle physics research...
A new era has begun towards a direct detection of ever lighter thermal dark matter candidates. To reach ultra-low detection thresholds necessary to probe unprecedentedly low dark matter masses, novel detector designs and target material alternatives are essential. One such target material is superfluid Helium which has the potential to probe so far uncharted light Dark Matter parameter space...
A powerful signature for confirmation of a dark matter discovery is an annual modulation in the event rate of collisions in direct detection experiments. It is however unclear how substructure within the dark matter halo might impact this signal. High resolution, hydrodynamic, galaxy simulations from the FIRE collaboration’s Latte suite are used to investigate the inherent variation of dark...
