Scintillating, cryogenic bolometers are widely used in the field of rare event searches. Their main advantages are an excellent energy resolution and particle identification on an event-by-event basis. The sensitivity of experiments applying this detector technique can be limited by the performance of the light channel and the presence of external backgrounds in the region of interest. In the framework of the CRESST-II experiment, we developed and successfully tested a novel detector design addressing both challenges. Using a large scale (≈\unit[60]{cm2}), beaker-shaped silicon light absorber, the signal height recorded in the light channel is improved by a factor 2.5 compared to conventional CRESTT-II detector modules. In combination with a large carrier crystal, a true 4π veto system is established which allows to tag external background sources.
@article{arxiv.1708.01581,
title = {Performance of a CRESST-II Detector Module with True $4\pi$-veto},
author = {G. Angloher and P. Bauer and A. Bento and C. Bucci and L. Canonica and X. Defay and A. Erb and F. v. Feilitzsch and N. Ferreiro Iachellini and P. Gorla and A. Gütlein and D. Hauff and J. Jochum and M. Kiefer and H. Kluck and H. Kraus and J. C. Lanfranchi and A. Langenkämper and J. Loebell and M. Mancuso and A. Münster and C. Pagliarone and F. Petricca and W. Potzel and F. Pröbst and F. Reindl and J. Rothe and K. Schäffner and J. Schieck and V. Schipperges S. Schönert and W. Seidel and M. Stahlberg and L. Stodolsky and C. Strandhagen and R. Strauss and A. Tanzke and H. H. Trinh Thi and C. Türkoğlu and M. Uffinger and A. Ulrich and I. Usherov and S. Wawoczny and M. Willers and M. Wüstrich and A. Zöller},
journal= {arXiv preprint arXiv:1708.01581},
year = {2017}
}