Köln 2004 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 45: Instrumentation and Applications VI

HK 45.8: Vortrag

Donnerstag, 11. März 2004, 18:30–18:45, C

First Experience with the NA60 Pixel Telescope in In-In collisions at 158 A GeV — •Karoly Banicz — Physikalisches Institut der Universität Heidelberg

The NA60 experiment studies the production of open charm and prompt dileptons in proton-nucleus and nucleus-nucleus collisions at the CERN SPS. To access the kinematics of charged particles already at the vertex level, NA60 uses 12 planes of radiation tolerant silicon pixel detectors placed in a 2.5 T magnetic field near the target. During the six weeks of the 2003 run with a 158 GeV/nucleon In beam on In targets, the pixel detectors were exposed to a fluence of up to a few times 10¹²  n_eq/cm². Radiation induced effects in the silicon sensors had to be taken into consideration in the design and operation of the pixel detectors. Special measures were also taken to ensure the mechanical stability of the wire bonds of the pixel detector in the strong magnetic field.