Physics – Instrumentation and Detectors
Scientific paper
2005-02-16
Nucl.Instrum.Meth. A547 (2005) 368-388
Physics
Instrumentation and Detectors
57 pages, 19 figures, 10 tables elsevier template for manuscript submission submitted to NIMA 10 February 2005
Scientific paper
10.1016/j.nima.2005.03.166
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 y.
Buck Christian
Hartmann Francis Xavier
Lasserre Thierry
Motta Dario
Schönert Stefan
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