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DARKLESS: Exploring axion dark matter and gravitational waves with a scalable experimental platform

Project description

First experimental campaign on the newly built DALI(PoP) detector

Laboratory investigations of cosmic phenomena are particularly challenging. Two of the greatest enigmas that remain beyond observational reach are dark matter constituents and high-frequency gravitational waves. The newly built detector prototype DALI(PoP) was designed to access both. With the support of the Marie Skłodowska-Curie Actions programme, the DARKLESS project will prepare the first scientific exploitation of DALI(PoP). With sensitivity almost an order of magnitude greater than current state of the art in both dark matter and gravitational wave detection, DALI(PoP)’s use in DARKLESS could improve the focus of future searches by identifying candidate spectral signals or exclusion limits for models and simulations.

Objective

DARKLESS is a research project aiming to shed light on two of the most profound open questions in fundamental physics: the nature of dark matter (DM) and the existence of high-frequency gravitational waves (GWs). Hosted at the Instituto de Astrofísica de Canarias (IAC) under the supervision of Prof. Rafael Rebolo—a world-leading expert in microwave instrumentation and its application to cosmology—DARKLESS will use a newly built detector prototype, DALI(PoP), to search for axions—hypothetical particles that may constitute DM—and GW signals in the 6–8 GHz range. The detector will operate with sensitivity nearly an order of magnitude beyond the current state of the art in both fields, enabling identification of candidate spectral signals or setting new exclusion limits on theoretical models and cosmological simulations. It will translate the Fellow’s step-by-step programme—from concept to prototype—into practice via the first scientific exploitation of DALI(PoP).

In parallel, the project will develop and test scalable methods for coherent multichannel signal combination, informing the design and validating performance for the future full DALI, a next-generation experiment with enhanced discovery reach. This work builds on the IAC’s expertise in microwave cosmology and radio interferometry and constitutes a two-way knowledge exchange that advances the Fellow’s path to research independence—developing state-of-the-art instrumentation, quantitative analysis, theoretical insight and open-science leadership—while extending the Host’s capabilities at the frontier of fundamental physics. The action also benefits from targeted knowledge transfer with world-leading international GW consortia and laboratories.

DARKLESS will foster international mobility, reinforce Europe’s leadership in astroparticle instrumentation, and deliver a timely, ambitious, and original contribution to the European Research Area.

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

INSTITUTO DE ASTROFISICA DE CANARIAS
Net EU contribution
€ 209 914,56
Address
CALLE VIA LACTEA
38205 SAN CRISTOBAL DE LA LAGUNA
Spain
Region
Comunidad de Madrid Comunidad de Madrid Madrid
Activity type
Research Organisations
Links
Total cost
No data