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Prototype scintillator cell for an In-based solar neutrino detector

MPS-Authors
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Motta,  Dario
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Buck,  C.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Hartmann,  Frank
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Lasserre,  Thierry
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Schönert,  Stefan
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Schwan,  Ute
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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引用

Motta, D., Buck, C., Hartmann, F., Lasserre, T., Schönert, S., & Schwan, U. (2005). Prototype scintillator cell for an In-based solar neutrino detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 547(2-3), 368-388. doi:10.1016/j.nima.2005.03.166.


引用: http://hdl.handle.net/11858/00-001M-0000-0011-885D-C
要旨
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.