Composite CaWO4 Detectors for the CRESST-II Experiment
M. Kiefer, G. Angloher, M. Bauer, I. Bavykina, A. Bento, A. Brown, C. Bucci, C. Ciemniak, C. Coppi, G. Deuter, F. von Feilitzsch, D. Hauff, S. Henry, P. Huff, J… 展开作者
M. Kiefer, G. Angloher, M. Bauer, I. Bavykina, A. Bento, A. Brown, C. Bucci, C. Ciemniak, C. Coppi, G. Deuter, F. von Feilitzsch, D. Hauff, S. Henry, P. Huff, J. Imber, S. Ingleby, C. Isaila, J. Jochum, M. Kimmerle, H. Kraus, J. -C. Lanfranchi, R. F. Lang, M. Malek, R. McGowan, V. B. Mikhailik, E. Pantic, F. Petricca, S. Pfister, W. Potzel, F. Pröbst, S. Roth, K. Rottler, C. Sailer, K. Schäffner, J. Schmaler, S. Scholl, W. Seidel, L. Stodolsky, A. J. B. Tolhurst, I. Usherov, W. Westphal
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Proceedings of the Thirteenth International Workshop on Low Temperature Detectors 4 pages, 9 figures
CRESST-II, standing for Cryogenic Rare Events Search with Superconducting Thermometers phase II, is an experiment searching for Dark Matter. In the LNGS facility in Gran Sasso, Italy, a cryogenic detector setup is operated in order to detect WIMPs by elastic scattering off nuclei, generating phononic lattice excitations and scintillation light. The thermometers used in the experiment consist of a tungsten thin-film structure evaporated onto the CaWO4 absorber crystal. The process of evaporation causes a decrease in the scintillation light output. This, together with the need of a big-scale detector production for the upcoming EURECA experiment lead to investigations for producing thermometers on smaller crystals which are glued onto the absorber crystal. In our Run 31 we tested composite detectors for the first time in the Gran Sasso setup. They seem to produce higher light yields as hoped and could provide an additional time based discrimination mechanism for low light yield clamp events.
First results from the CRESST-III low-mass dark matter program
CRESST实验是一个直接的暗物质搜索，其目的是测量潜在的暗物质粒子在地球上的探测器的相互作用。在目前的CRESST-III阶段，我们专注于低能量阈值，以提高对光暗物质粒子的灵敏度。在这篇手稿中，我们描述了在CRESST-III（05/2016-02/2018）的第一次运行中运行的一个探测器的分析，实现了30.1eV的核反冲阈值。该结果是用23.6 g CaWO $_4$晶体在Cratori Nazionali del Gran Sasso（LNGS）的CRESST装置中作为低温蒸发量热计操作获得的。初级声子/热信号和同时发射的闪烁光（其在单独的蓝宝石上硅光吸收体中被吸收）都用在~ 15 mK下操作的高灵敏度过渡边缘传感器测量。这些传感器与我们目标中存在的轻元素氧的独特组合产生对低至160 MeV/c $^2$的暗物质粒子质量的灵敏度。
BICEP/Keck XIX: Extremely Thin Composite Polymer Vacuum Windows for BICEP and Other High Throughput Millimeter Wave Telescopes
Cardiff University（卡迪夫大学）；Stanford University（斯坦福大学）；SLAC National Accelerator Laboratory（SLAC国家加速器实验室）；University of British Columbia（不列颠哥伦比亚大学）；Center for Astrophysics, Harvard & Smithsonian（哈佛-史密森天体物理中心）；California Institute of Technology（加州理工学院）；University of Cincinnati（辛辛那提大学）；Jet Propulsion Laboratory, California Institute of Technology（加州理工学院喷气推进实验室）；Kavli Institute for Cosmological Physics, University of Chicago（芝加哥大学卡弗里宇宙物理学研究所）；University of Minnesota（明尼苏达大学）
