XXth International Conference on Neutrino Physics and Astrophysics

Poster Abstract


Development, Construction and Performance of A Large Solid Scintillator Detector for the MINOS Experiment

The MINOS experiment will study the phenomenon of neutrino oscillation using the Fermilab Main Injector neutrino beam and atmospheric neutrinos. MINOS will use a 1 Kton near detector and a 5.4 Kton far detector. The near and far detectors are situated respectively 1 Km and 734 Km from the neutrino production target. The detectors are fine grained sampling calorimeters with 1 inch thick steel as absorber and finely segmented (4 cm wide and 1 cm thick) scintillator strips as sampling element for tracking and topology measurement. The signals are read out using wavelength shifting and clear fibres, and Hamamatsu M16/M64 multipixel phototubes. The total volume of the scintillator 26000 m2*cm (approximately 400 tons) requires that the cost per unit of the detector be kept low. MINOS has optimised the cost of a large detector using extruded solid scintillator, wavelength shifting and clear fibre, multi-pixel phototubes and low cost electronics. In this presentation, I will exhibit the details of the system design, along with test results from fabrication and the performance of nearly 150 far detector planes installed so far.

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