Results are given on tests of large particle trackers for the detection of neutrino interactions in long-baseline experiments. Module prototypes have been assembled using TiO2-doped polycarbonate panels. These were subdivided into cells of similar to1 cm(2)- cross-section and 6 m length, filled with liquid scintillator. A wavelength-shifting fibre inserted into each cell captured a part of the scintillation light emitted when a cell was traversed by an ionizing particle. Two different fibre-readout systems have been tested: an optoelectronic chain comprising an image intensifier and an electron-bombarded CCD (EBCCD); and a hybrid photodiode (HPD). New, low-cost liquid scintillators have been investigated for applications in large underground detectors. Testbeam studies have been performed using a commercially available liquid scintillation The number of detected photoelectrons for minimum-ionizing particles crossing a module at different distances from the fibre readout end was 6-12 with the EBCCD chain and a mirror at the non-readout end; 4-10 with the HPD and no mirror. The light-attenuation lengths in the fibres were similar to9.4 m with the EBCCD and similar to6.4 m with the HPD. The detector response to electron showers has also been measured. After ten radiation lengths of lead, the transverse position of the incoming electron was determined with a precision of a few millimetres for electrons of 4 GeV, and with a precision of 1.5-2.0 cm for electrons of 1 GeV. (C) 2002 Elsevier Science B.V. All rights reserved.
Large liquid-scintillator trackers for neutrino experiments RID A-4297-2011 / L., Benussi; N., Bruski; N., D'Ambrosio; Y., Declais; J., Dupraz; J. P., Fabre; V., Fanti; E., Forton; D., Frekers; A., Frenkel; C., Girerd; S. V., Golovkin; G., Gregoire; K., Harrison; G., Jonkmans; P., Jonsson; S., Katsanevas; I., Kreslo; J., Marteau; G., Martellotti; S., Martinez; A. M., Medvedkov; G., Moret; K., Niwa; V., Novikov; G. V., Beek; Penso, Gianni; V. G., Vasil'Chenko; J. L., Vuilleumier; G., Wilquet; P., Zuchelli. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 488:(2002), pp. 503-516. [10.1016/S0168-9002(02)00516-8]
Large liquid-scintillator trackers for neutrino experiments RID A-4297-2011
PENSO, Gianni;
2002
Abstract
Results are given on tests of large particle trackers for the detection of neutrino interactions in long-baseline experiments. Module prototypes have been assembled using TiO2-doped polycarbonate panels. These were subdivided into cells of similar to1 cm(2)- cross-section and 6 m length, filled with liquid scintillator. A wavelength-shifting fibre inserted into each cell captured a part of the scintillation light emitted when a cell was traversed by an ionizing particle. Two different fibre-readout systems have been tested: an optoelectronic chain comprising an image intensifier and an electron-bombarded CCD (EBCCD); and a hybrid photodiode (HPD). New, low-cost liquid scintillators have been investigated for applications in large underground detectors. Testbeam studies have been performed using a commercially available liquid scintillation The number of detected photoelectrons for minimum-ionizing particles crossing a module at different distances from the fibre readout end was 6-12 with the EBCCD chain and a mirror at the non-readout end; 4-10 with the HPD and no mirror. The light-attenuation lengths in the fibres were similar to9.4 m with the EBCCD and similar to6.4 m with the HPD. The detector response to electron showers has also been measured. After ten radiation lengths of lead, the transverse position of the incoming electron was determined with a precision of a few millimetres for electrons of 4 GeV, and with a precision of 1.5-2.0 cm for electrons of 1 GeV. (C) 2002 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
