The fluorescence light propagation in a large volume detector based on organic liquid scintillators is discussed. In particular, the effects of the fluor radiative transport and solvent Rayleigh scattering are emphasized. These processes have been modelled by a ray-tracing Monte Carlo method and have been experimentally investigated in the Borexino prototype which was a 4.3 ton, 4π sensitive detector. The comparison between the model prediction and the experimental data shows a satisfactory agreement indicating that the main aspects of these processes are well understood. Some features of the experimental time response of the detector are still under study.
Light propagation in a large volume liquid scintillator / G. Alimonti, C. Arpesella, M. Balata, G. Bellini, J. Benziger, S. Bonetti, B. Caccianiga, L. Cadonati, F.P. Calaprice, G. Cecchet, M. Chen, N. Darnton, A. De Bari, M. Deutsch, F. Elisei, F. von Feilitzsch, C. Galbiati, F. Gatti, M.G. Giammarchi, D. Giugni, T. Goldbrunner, A. Golubchikov, A. Goretti, T. Hagner, F.X. Hartmann, R. von Hentig, G. Heusser, A. Ianni, M. Johnson, M. Laubenstein, P. Lombardi, S. Magni, S. Malvezzi, J. Maneira, I. Manno, G. Manuzio, F. Masetti, U. Mazzucato, E. Meroni, M. Neff, L. Oberauer, A. Perotti, R.S. Raghavan, G. Ranucci, E. Resconi, C. Salvo, R. Scardaoni, S. Schönert, O. Smirnov, R. Tartaglia, G. Testera, R.B. Vogelaar, S. Vitale, O. Zaimidoroga. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 440:2(2000 Feb), pp. 360-371.
Light propagation in a large volume liquid scintillator
G. Bellini;S. Bonetti;B. Caccianiga;E. Meroni;
2000
Abstract
The fluorescence light propagation in a large volume detector based on organic liquid scintillators is discussed. In particular, the effects of the fluor radiative transport and solvent Rayleigh scattering are emphasized. These processes have been modelled by a ray-tracing Monte Carlo method and have been experimentally investigated in the Borexino prototype which was a 4.3 ton, 4π sensitive detector. The comparison between the model prediction and the experimental data shows a satisfactory agreement indicating that the main aspects of these processes are well understood. Some features of the experimental time response of the detector are still under study.
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