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PHENIX inner detectors

2003; Elsevier BV; Volume: 499; Issue: 2-3 Linguagem: Inglês

10.1016/s0168-9002(02)01956-3

1872-9576

M Allen, Malcolm J. Bennett, M. Bobrek, J. Boissevain, S. Boose, E. Bosze, C.L. Britton, J. Chang, C.Y. Chi, M. Chiu, R. Conway, Richard Cunningham, A. Denisov, A. Deshpande, M.S. Emery, A. Enokizono, Nance Ericson, B. Fox, S.-Y. Fung, P. Giannotti, T. Hachiya, A. G. Hansen, K. Homma, B. V. Jacak, D. E. Jaffe, J. H. Kang, J. Kapustinsky, Song Yee Kim, Y.G. Kim, T. Kohama, P. J. Kroon, W. Lenz, N. Longbotham, M.S. Musrock, T. Nakamura, H. Ohnìshì, S. Ryu, A. Sakaguchi, R. Seto, T. Shiina, Michael L. Simpson, J. Simon-Gillo, W. E. Sondheim, T. Sugitate, J. P. Sullivan, H. W. van Hecke, J.W. Walker, S. N. White, P.S. Willis, N. Xu,

Particle physics theoretical and experimental studies

The timing, location and particle multiplicity of a PHENIX collision are determined by the Beam–Beam Counters (BBC), the Multiplicity/Vertex Detector (MVD) and the Zero-Degree Calorimeters (ZDC). The BBCs provide both the time of interaction and position of a collision from the flight time of prompt particles. The MVD provides a measure of event particle multiplicity, collision vertex position and fluctuations in charged particle distributions. The ZDCs provide information on the most grazing collisions. A Normalization Trigger Counter (NTC) is used to obtain absolute cross-section measurements for p–p collisions. The BBC, MVD and NTC are described below.