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          Institute: MPI für Kernphysik     Collection: Neutrino Physics     Display Documents

ID: 245270.0, MPI für Kernphysik / Neutrino Physics
Prototype scintillator cell for an In-based solar neutrino detector
Authors:Motta, Dario; Buck, C.; Hartmann, Frank; Lasserre, Thierry; Schönert, Stefan; Schwan, Ute
Research Context:Neutrino
Date of Publication (YYYY-MM-DD):2005-08-01
Title of Journal:Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Journal Abbrev.:Nucl. Instrum. Meth. A
Issue / Number:2-3
Start Page:368
End Page:388
Copyright:Copyright © 2005 Elsevier B.V.
Review Status:not specified
Audience:Experts Only
Abstract / Description:We describe the work carried out at MPIK to design, model, build and characterize a prototype cell filled with a novel indium-loaded scintillator of interest for real-time low energy solar neutrino spectroscopy. First, light propagation in optical modules was studied with experiments and Monte Carlo simulations. Subsequently a 5 cm x 5 cm x 100 cm prototype detector was set-up and the optical performances of several samples were measured. We first tested a benchmark PXE-based scintillator, which performed an attenuation length of ~ 4.2 m and a photo-electron yield of ~ 730 pe/MeV. Then we measured three In-loaded samples. At an In-loading of 44 g/l, an energy resolution of ~11.6% and a spatial resolution of ~7 cm were attained for 477 keV recoil electrons. The long-range attenuation length in the cell was ~ 1.3 m and the estimated photo-electron yield ~200 pe/MeV. Light attenuation and relative light output of all tested samples could be reproduced reasonably well by MC. All optical properties of this system have remained stable over a period of > 1 year.
Free Keywords:Solar neutrinos; Indium experiment; Indium loaded scintillator; Prototype detector; Optical performances
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Independent Research Group S. Schönert/Neutrino Physics
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