Using scientific-grade CCDs for the direct detection of dark matter with the DAMIC-M experiment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90107%2F22%3A00363786" target="_blank" >RIV/68407700:90107/22:00363786 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1748-0221/17/08/C08004" target="_blank" >https://doi.org/10.1088/1748-0221/17/08/C08004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/17/08/C08004" target="_blank" >10.1088/1748-0221/17/08/C08004</a>

Result language

angličtina

Original language name

Using scientific-grade CCDs for the direct detection of dark matter with the DAMIC-M experiment

Original language description

The DAMIC-M [1] project is devoted to the exploration of the hidden sector and the search for light dark matter particles using Charge-Coupled Devices (CCDs). It follows the DAMIC at SNOLAB [2] experiment which pioneered the detection of new particles through their interaction with the nucleus or the electrons of the bulk silicon of fully depleted CCDs. A kilogram-sized target mass will be installed at the Modane underground laboratory (LSM, France) which offers an excellent low background environment for rare-event search. DAMIC-M detectors demonstrate several technological advancements including the implementation of the skipper technique, and custom front-end control and read-out electronics. Skipper CCDs can perform multiple non-destructive measurements of the pixel charge which can lead to a read-out noise of a fraction of an electron. With a 15 mu m x 15 mu m pixel area, 675 mu m thickness and the ability of 3D reconstruction using the diffusion of the particle track, the spatial resolution of our CCDs allows for the follow-up of radioactive chains, a powerful tool to discriminate genuine particle interaction from in situ radioactive decays. Together with an extremely careful fabrication procedure that controls the contaminant and the generation of bulk radioactive contamination by cosmic ray spallation, the single electron resolution will guarantee a detection energy threshold of only a few eVs, pushing the sensitivity of DAMIC-M by at least one order of magnitude better than previous experiments. I will present the current status of DAMIC-M describing our technological challenges and the solutions we have adopted. I will introduce our method to measure and mitigate the bulk radioactive contamination and discuss the ongoing assembly of a prototype detector, the Low Background Chamber (LBC), aiming at validating our design options.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

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Continuities

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Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

1748-0221

Volume of the periodical

17

Issue of the periodical within the volume

8

Country of publishing house

GB - UNITED KINGDOM

Number of pages

5

Pages from-to

1-5

UT code for WoS article

000858793300004

EID of the result in the Scopus database

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