The CRESST-III low-mass WIMP detector

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Strauss, R.^1 ; Angloher, G.^1 ; Bento, A.^2 ; Bucci, C.^3 ; Canonica, L.^3 ; Defay, X.^4 ; Erb, A.^4,5 ; Von Feilitzsch, F.^4 ; Ferreiro Iachellini, N.^1 ; Gorla, P.^3 ; Gütlein, A.^6 ; Hauff, D.^1 ; Jochum, J.^7 ; Kiefer, M.^1 ; Kluck, H.^6 ; Kraus, H.^8 ; Lanfranchi, J.C.^4 ; Loebell, J.^7 ; Münster, A.^4 ; Pagliarone, C.^3 ; Petricca, F.^1 ; Potzel, W.^4 ; Pröbst, F.^1 ; Reindl, F.^1 ; Schäffner, K.^3 ; Schieck, J.^6 ; Schönert, S.^4 ; Seidel, W.^1 ; Stodolsky, L.^1 ; Strandhagen, C.^7 ; Tanzke, A.^1 ; Trinh Thi, H.H.^4 ; Türkoglu, C.^6,9 ; Ufflnger, M.^7 ; Ulrich, A.^4 ; Usherov, I.^7 ; Wawoczny, S.^4 ; Willers, M.^4 ; Wüstrich, M.^1 ; Zöller, A.^4

Max-Planck-Institut für Physik, München

D-80805, Germany^1

Departamento de Fisica, Universidade de Coimbra, Coimbra

P3004 516, Portugal^2

INFN, Laboratori Nazionali Del Gran Sasso, Assergi

1-67010, Italy^3

Physik-Department and Excellence Cluster Universe, Technische Universität München, Garching

D-85747, Germany^4

Walther-Meibner-Institut für Tieftemperaturforschung, Garching

D-85748, Germany^5

Institut für Hochenergiephysik der Österreichischen, Akademie der Wissenschaften, Wien

A-1050, Austria^6

Eberhard-Karls-Universität Tü Bingen, Tübingen

D-72076, Germany^7

Department of Physics, University of Oxford, Oxford

OX1 3RH, United Kingdom^8

Atominstitut, Vienna University of Technology, Wien

A-1020, Austria^9

关键词: CaWO4 crystals;    Detector module;    Detector resolution;    High potential;    Inner Detector;    Phonon energies;    Silicon on sapphires;    Support structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/4/042048/pdf
DOI  :  10.1088/1742-6596/718/4/042048

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The next generation direct dark matter experiment CRESST-III has a high potential to significantly increase the sensitivity to low-mass WIMPs (mx10GeV/c2). We present the new CRESST detector module: it consists of a 24 g CaWO4crystal operated as a phonon detector and a 20×20 mm2silicon-on-sapphire light detector. The phonon energy threshold is lowered to ∼100eV and a light detector resolution of typically 5eV is achieved. A fully-scintillating inner detector housing is realised which efficiently rejects events from surface-alpha decays. The CaWO4sticks holding the target crystal are also operated as calorimeters to discriminate all possible artefacts related to the support structure. A projection for the sensitivity to spin-independent WIMP-nucleon scattering is given for the first phase of CRESST-III which will start beginning of 2016.