The EURECA collaboration

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Abstract

The EURECA (European Underground Rare Event Calorimeter Array) project is aimed at searching for dark matter particles using cryogenic bolometers. The proponents of the present project have decided to pool their strengths and expertise to build a facility to house up to 1000 kg of detectors, EURECA, consisting in the first instance of germanium and CaWO4 crystals. The shielding will be provided through a large water tank in which the cryostat with detectors will be immersed. The EURECA infrastructure will be an essential tool for the community interested in using cryogenic detectors for dark matter searches. Beyond European detectors, it will be designed to host other types of similar cryogenic detectors, requiring millikelvin operating temperatures. In particular, this includes the germanium detectors currently in use by the SuperCDMS team, following the current collaborative work performed by the EURECA and SuperCDMS collaborations. EURECA will have two stages. The first phase aims at a sensitivity of 3 10-10pb and will involve building the infrastructure, cryostat and shielding, and operating 150kg of detectors. The second phase will be completed with 850kg of additional detectors, the relative weight between the different detectors being decided by the collaboration according to the physics reach. A sensitivity of 2.10-11 pb is aimed for atthe second stage. EURECA will ideally benefit from the planned extension of the deepest underground laboratory in Europe - LSM. With a site-independent design, it can also be hosted in other locations at similar or deeper sites such as SNOLAB. © 2014 The Authors.

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Angloher, G., Armengaud, E., Augier, C., Benoit, A., Bergmann, T., Blümer, J., … Zöller, A. (2014). The EURECA collaboration. Physics of the Dark Universe, 3(1), 41–74. https://doi.org/10.1016/j.dark.2014.03.004

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