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Unveiling the Hidden: A Search for Light Dark Matter with CCDs

Objective

Dark matter (DM) is a ubiquitous yet invisible presence in our universe. It dictated how galaxies formed in the first place, and now moves stars around them at puzzling speeds. The DM mass in the universe is known to be five times that of ordinary matter; yet its true nature remains elusive.

Weakly interacting massive particles (WIMPs), relics from the early universe, are a compelling explanation chased by sensitive experiments in deep underground laboratories. However, searches for heavy WIMPs (≈100 times the proton mass), the most theoretically natural candidates, have been so far unsuccessful. Nor has evidence for such heavy particles yet been found at the CERN Large Hadron Collider. Alternative scenarios are now under scrutiny, such as the existence of a hidden sector of lighter DM particles that interact, differently than WIMPs, also with electrons.

DAMIC-M (Dark Matter In CCDs at Modane) will search beyond the heavy WIMP paradigm by detecting nuclear recoils and electrons induced by light DM in charge-coupled devices (CCDs). The 0.5 kg detector will be installed at the Laboratoire Souterrain de Modane, France. In this novel and unconventional use of CCDs, which are commonly employed for digital imaging in astronomical telescopes, the ionization charge will be detected in the most massive CCDs ever built with exquisite spatial resolution (15 μm x 15 μm pixel). The crucial innovation in these devices is the non-destructive, repetitive measurement of the pixel charge, which results in the high-resolution detection of a single electron and unprecedented sensitivity to light DM (≈ eV energies are enough to free an electron in silicon). By counting individual charges in a detector with extremely low leakage current – a combination unmatched by any other DM experiment – DAMIC-M will take a leap forward of several orders of magnitude in the exploration of the hidden sector, a jump that may be rewarded by serendipitous discovery.

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Keywords

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Programme(s)

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Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

ERC-ADG - Advanced Grant

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) ERC-2017-ADG

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Host institution

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 3 249 779,25
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 3 349 563,00

Beneficiaries (2)

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