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Development of superconducting contacts for the CRESST II 66-channel superconducting quantum interference device readout system.

Rev Sci Instrum 78:7 (2007) 073301

Authors:

B Majorovits, S Henry, H Kraus

Abstract:

The CRESST experiment is designed to search for weakly interacting massive particle dark matter with cryogenic detectors. CRESST II will use up to 33 CaWO(4) crystals with a total mass of approximately 10 kg. These many detectors require a readout system based on 66-channel superconducting quantum interference devices (SQUIDs). In this article we report on the development of a modular superconducting connector for the 66-channel SQUID readout circuit. We show that the technique developed reliably produces superconducting contacts.
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Scintillation studies of CaWO4 in the milli-kelvin temperature range

Physical Review B: Condensed Matter and Materials Physics 75 (2007) 184308 6pp

Authors:

SA Henry, V. B. Mikhailik, H. Kraus, A. J. B. Tolhurst
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Excited states of molybdenum oxyanion in scheelite and wolframite structures

RADIAT MEAS 42:4-5 (2007) 767-770

Authors:

A Kotlov, L Jonsson, H Kraus, V Mikhailik, V Nagirnyi, G Svensson, BI Zadneprovski

Abstract:

Scheelite CdMoO4 and wolframite eCdWO(4):MO (0.04-0.4wt%) single crystals were studied using the time-resolved spectroscopy under UV excitation over a temperature range of 1.85-300K. The threshold energies for the creation of free charge carriers were measured using the method of photostimulated luminescence. The decay kinetics of the main emission in CdMoO4 and the molybdenum-related emission in CdWO4:MO was studied and the parameters of the triplet excited states of molybdenum-related oxyanions were calculated. (C) 2007 Elsevier Ltd. All rights reserved.
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Multiple photon counting technique for detection and analysis of slow scintillation processes

RADIAT MEAS 42:4-5 (2007) 921-924

Authors:

H Kraus, VB Mikhailik, D Wahl

Abstract:

The development of the multi-photon counting (MPC) technique for the investigation of scintillation properties of materials is presented. The technique is based on the recording and analysis of a sequence of individual photon pulses resulting from a scintillation event. The technique is especially advantageous for the analysis of slow scintillation processes and the investigation of temperature-dependent scintillator proper-Lies. The results on the temperature variation of scintillation characteristics of ZnSe and ZnSe-Te are presented to illustrate the performance of the MPC technique. (c) 2007 Elsevier Ltd. All rights reserved.
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In situ radioglaciological measurements near Taylor Dome, Antarctica and implications for UHE neutrino astronomy

(2007)

Authors:

D Besson, J Jenkins, S Matsuno, J Nam, M Smith, SW Barwick, JJ Beatty, WR Binns, C Chen, P Chen, JM Clem, A Connolly, PF Dowkontt, MA DuVernois, RC Field, D Goldstein, PW Gorham, A Goodhue, C Hast, CL Hebert, S Hoover, MH Israel, J Kowalski, JG Learned, KM Liewer, JT Link, E Lusczek, B Mercurio, C Miki, P Miocinovic, CJ Naudet, J Ng, R Nichol, K Palladino, K Reil, A Romero-Wolf, M Rosen, L Ruckman, D Saltzberg, D Seckel, GS Varner, D Walz, F Wu
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