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LowRad

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Low radon and low internal radioactivity for dark matter and rare event xenon de...

Low radon and low internal radioactivity for dark matter and rare event xenon detectors The astrophysical and cosmological evidence that the majority of matter in the universe must consist of exotic dark matter is overwhelming. But it is not yet clear what dark matter really is. Very promising candidates are WIMPs, t... ver más

31/10/2027

3M€

Presupuesto del proyecto: 3M€

Líder del proyecto

UNIVERSITAET MUENSTER No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2022-11-01

ERC-2021-ADG: ERC ADVANCED GRANTS Scope:Objectives

I+D

Cerrada hace 3 años

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Duración del proyecto: 59 meses Fecha Inicio: 2022-11-01
Fecha Fin: 2027-10-31

Líder del proyecto

UNIVERSITAET MUENSTER No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 3M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto The astrophysical and cosmological evidence that the majority of matter in the universe must consist of exotic dark matter is overwhelming. But it is not yet clear what dark matter really is. Very promising candidates are WIMPs, the detection of which would also solve other pressing questions in particle physics. For the search for WIMPs, liquid xenon-based detectors are by far the most sensitive. The collaborations LZ, XENON and DARWIN joined to build a next generation detector, DARWIN/G3, with a sensitivity limited only by coherent neutrino scattering. Such a detector will not only search for dark matter, but will become an observatory for rare event searches (axions, solar neutrinos, neutrinoless double beta decay, ..).Despite construction in underground laboratories and with further shielding or veto systems for muons or neutrons, the sensitivity of these detectors is limited by radioactive decays within the xenon, especially of the radioactive noble gas isotopes 222Rn and 85Kr, dominating the background of current xenon-based dark matter experiments. In this project we want to push the possibilities of cryogenic distillation to continuously reduce 222Rn and 85Kr to an unprecedented level of 1 atom per 100 mol of xenon (10 mol in case of 85Kr), which will make their background contributions at DARWIN/G3 to be a factor 10 smaller than that of the un-shieldable solar neutrinos. Our cryogenic distillation setups which obtain their cooling power from a novel heat pump concept offers the additional benefit of determining the impurity concentrations in-situ. We will integrate the novel distillation systems with the removal of electronegative impurities and their diagnostics into a compact cleaning system. Within LowRAD we aim to provide a complete quasi loss-less continuous 85Kr removal system ready for DARWIN/G3. In addition, we will explore how several important physics channels would become possible due to the extremely low 222Rn and 85Kr concentrations.

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