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CROSS SIGNED

Cryogenic Rare-event Observatory with Surface Sensitivity

Total Cost €

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EC-Contrib. €

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Partnership

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 CROSS project word cloud

Explore the words cloud of the CROSS project. It provides you a very rough idea of what is the project "CROSS" about.

simplifying    searching    teo2    decay    permil    surface    structure    prospect    source    130te    enormous    competitive    resolution    enriched    superconductors    shape    choices    simplicity    cross    ultimate    coated    unprecedented    favor    tonne    phenomena    respectively    bolometric    purity    alpha    superior    sensitivity    surfaces    energy       international    persist    performance       advantage    solid    act    exposure    underground    aluminium    transition    background    laboratory    context    double    additional    bolometers    quasi    ultrapure    pulse    superconductive    lepton    experiments    region    experiment    li2moo4    discrimination    tagged    rid    zero    direct    read    installed    easily    modifier    life    crystallization    particles    modularity    discriminate    dominant    reject    particle    beta    lot    decisive    film    shallow    100mo    isotopes    candidates    unfortunately    light    arguments    masses    depositions    penetrating    intrinsic    expandable    grounds    idea    crystals    arrays    violation    detectors    time    neutrinoless    physics    neutrino    intermediate    canfranc    events    delaying    compounds    extremely   

Project "CROSS" data sheet

The following table provides information about the project.

Coordinator
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS 

Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794
website: www.cnrs.fr

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 3˙146˙598 €
 EC max contribution 3˙146˙598 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-01-01   to  2022-12-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS FR (PARIS) coordinator 3˙146˙598.00

Map

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 Project objective

CROSS will set the grounds for large-scale experiments searching for neutrinoless double beta decay with zero background at an exposure scale of ~1 tonne x year and with very high energy resolution – about 1.5‰ – in the region of interest. These features will enable searching for lepton number violation with unprecedented sensitivity, penetrating in prospect the direct-ordering region of the neutrino masses. CROSS will be based on arrays of TeO2 and Li2MoO4 bolometers enriched in the isotopes of interest 130Te and 100Mo, respectively. There are strong arguments in favor of these choices, such as the high double beta transition energy of these candidates, the easy crystallization processes of TeO2 and Li2MoO4, and the superior bolometric performance of these compounds in terms of energy resolution and intrinsic purity. The key idea in CROSS is to reject surface events (a dominant background source) by pulse-shape discrimination, obtained by exploiting solid-state-physics phenomena in superconductors. The surfaces of the crystals will be coated by an ultrapure superconductive aluminium film, which will act as a pulse-shape modifier by delaying the pulse development in case of shallow energy depositions, exploiting the long quasi-particle life-time in aluminium. This method will allow getting rid of the light detectors used up to now to discriminate surface alpha particles, simplifying a lot the bolometric structure and achieving the additional advantage to reject also beta surface events, which unfortunately persist as an ultimate background source if only alpha particles are tagged. The intrinsic modularity and the simplicity of the read-out will make CROSS easily expandable. The CROSS program is focused on an intermediate experiment with 90 crystals, installed underground in the Canfranc laboratory, which will be not only extremely competitive in the international context but also a decisive step to demonstrate the enormous potential of CROSS in terms of background.

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The information about "CROSS" are provided by the European Opendata Portal: CORDIS opendata.

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