A start trigger detector for the ALICE spectrometer

A fall-back option of the T0 start trigger detector was developed for the ALICE setup that was intended for the study of quark-gluon plasma with the LHC accelerator (CERN). The Monte Carlo simulation with the PYTHIA program was performed for a detector incorporating two symmetrical arrays of 12 Cere...

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Detalles Bibliográficos
Autores principales: Grigoriev, V A, Kaplin, V A, Karakas, A I, Loginov, V A, Rakhmanov, A L, Kurepin, A B, Maevskaya, A I, Razin, V I, Reshetin, A I, Akindinov, A, Martemyanov, A N, Smirnitsky, A V, Kacharova, M S, Lukyanov, V N, Shusterman, L P
Lenguaje:eng
Publicado: 2000
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1023/A:1026607631385
http://cds.cern.ch/record/516230
Descripción
Sumario:A fall-back option of the T0 start trigger detector was developed for the ALICE setup that was intended for the study of quark-gluon plasma with the LHC accelerator (CERN). The Monte Carlo simulation with the PYTHIA program was performed for a detector incorporating two symmetrical arrays of 12 Cerenkov counters, each composed of 26-mm- diameter Hamamatsu R5505 phototubes with fine-mesh dynodes and a quartz radiator 3 cm in length and 26 mm in diameter. Its simulated detection efficiency for p-p collisions exceeded 88%. A prototype Cerenkov counter, consisting of a R3432-01 (similar to R5505) phototube and a quartz radiator with dimensions of 25*30*12 mm, was tested in a beam of pions and protons with a 1.19-GeV/c-momentum. The time resolution in the 1-200 dynamic range was better than 50 ps. (3 refs).

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