Light concentrators for Borexino and CTF

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Sep 2004Embargo end date: 01 Jan 2003 English Publisher:Elsevier BVJournal:Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, volume 530, pages 453-462 (issn: 0168-9002,

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Authors: Oberauer, L.; Grieb, C.; von Feilitzsch, F.; Manno, I.;

doi: 10.1016/j.nima.2004.05.095 , 10.48550/arxiv.physics/0310076

arXiv: physics/0310076

Light concentrators for Borexino and CTF

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Abstract

Light concentrators for the solar neutrino experiment Borexino and the Counting Test Facility (CTF) have been developed and constructed. They increase the light yield of these detectors by a factor of 2.5 and 8.8, respectively. Technical challenges like long term stability in various media, high reflectivity and radiopurity have been addressed and the concepts to overcome these difficulties will be described. Gamma spectroscopy measurements of the concentrators show an upper limit of 12e-6 Bq/g for uranium and a value of 120e-6 Bq/g for thorium. Upper limits on other possible contaminations like 26Al are presented. The impact of these results on the performance of Borexino and the CTF are discussed and it is shown that the design goals of both experiments are fulfilled.

submitted to Nuclear Instruments and Methods in Physics Research

Related Organizations

Institute for Particle and Nuclear Physics
Hungary
Virginia Tech
United States
Technical University of Munich
Germany
Hungarian Academy of Sciences
Hungary

Keywords

Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det)

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