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Journal Articles Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Year : 2002

Large liquid-scintillator trackers for neutrino experiments

L. Benussi
  • Function : Author
N. Bruski
  • Function : Author
N. d'Ambrosio
  • Function : Author
J. Dupraz
  • Function : Author
J P. Fabre
  • Function : Author
V. Fanti
  • Function : Author
E. Forton
  • Function : Author
D. Frekers
  • Function : Author
A. Frenkel
  • Function : Author
S V. Golovkin
  • Function : Author
G. Gregoire
  • Function : Author
K. Harrison
  • Function : Author
G. Jonkmans
  • Function : Author
I. Kreslo
  • Function : Author
G. Martellotti
  • Function : Author
S. Martinez
  • Function : Author
a M. Medvedkov
  • Function : Author
K. Niwa
  • Function : Author
V. Novikov
  • Function : Author
G. van Beek
  • Function : Author
G. Penso
  • Function : Author
V G. Vasilchenko
  • Function : Author
J L. Vuilleumier
  • Function : Author
G. Wilquet
  • Function : Author
P. Zucchelli
  • Function : Author

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 TiO$_2$-doped polycarbonate panels. These were subdivided into cells of $\sim 1$~cm$^2$ cross section and 6~m length, filled with liquid scintillator. A wavelength-shifting fibre inserted in 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 scintillator. The number of detected photoelectrons for minimum-ionizing particles crossing a module at different distances from the fibre readout end was 6 to 12 with the EBCCD chain and a mirror at the non-readout end; 4 to 10 with the HPD and no mirror. The light-attenuation lengths in the fibres were $\sim 9.4$~m with the EBCCD and $\sim 6.4$~m with the HPD. The detector response to electron showers has also been measured. After 10 radiation lengths of lead, the transverse position of the incoming electron was determined with a precision of a few millimeters for electrons of 4 GeV, and with a \hbox{precision of 1.5$-$2.0~cm for electrons of 1~GeV.}
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Dates and versions

in2p3-00013669 , version 1 (17-12-2003)

Identifiers

  • HAL Id : in2p3-00013669 , version 1

Cite

L. Benussi, N. Bruski, N. d'Ambrosio, Y. Déclais, J. Dupraz, et al.. Large liquid-scintillator trackers for neutrino experiments. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2002, 488, pp.503-516. ⟨in2p3-00013669⟩
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