Silicon vertex tracker for RHIC PHENIX experiment

摘要

The PHENIX experiment at Relativistic Heavy Ion Collider will be equipped with Silicon Vertex tracker to enhance its physics capability. There are four layers of silicon sensor to reconstruct charged tracks with 50 urn resolution of decay length measurement. The VTX surrounds the collision point. The inner two layers and the outer two layers are composed of 30 pixel ladders and 44 stripixel ladders, respectively. We have been developing these detectors and done a performance test with 120 GeV proton beam.%RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan,RIKEN BNL Research Center, Brookhaven National Laboratory, Upton. NY 11973-5000, USA;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan,RIKEN BNL Research Center, Brookhaven National Laboratory, Upton. NY 11973-5000, USA;Stony Brook University, SUNY, Stony Brook, NY 11794, USA;L.L.R, Ecole Polytechinique, CNRS-1N2P3, Palaiseau 91128, France;RIKEN BNL Research Center, Brookhaven National Laboratory, Upton. NY 11973-5000, USA;L.L.R, Ecole Polytechinique, CNRS-1N2P3, Palaiseau 91128, France;Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;Stony Brook University, SUNY, Stony Brook, NY 11794, USA,RIKEN BNL Research Center, Brookhaven National Laboratory, Upton. NY 11973-5000, USA;Iowa State University, Ames, IA5011. USA;L.L.R, Ecole Polytechinique, CNRS-1N2P3, Palaiseau 91128, France;Stony Brook University, SUNY, Stony Brook, NY 11794, USA;Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan;L.L.R, Ecole Polytechinique, CNRS-1N2P3, Palaiseau 91128, France;Rikkyo University. Toshima, Tokyo 171-8501, Japan;Rikkyo University. Toshima, Tokyo 171-8501, Japan;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan;Rikkyo University. Toshima, Tokyo 171-8501, Japan;Rikkyo University. Toshima, Tokyo 171-8501, Japan;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan;Iowa State University, Ames, IA5011. USA;Brookhaven National Laboratory, Upton, NY 11973-5000, USA;Nevis Laboratories, Columbia University. Irvington, NY 10533. USA;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan;Brookhaven National Laboratory, Upton, NY 11973-5000, USA;Iowa State University, Ames, IA5011. USA;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan;Brookhaven National Laboratory, Upton, NY 11973-5000, USA;Stony Brook University, SUNY, Stony Brook, NY 11794, USA;Iowa State University, Ames, IA5011. USA;Stony Brook University, SUNY, Stony Brook, NY 11794, USA;RIKEN Nishina Center for Accelerator-Based Science, Wako. Saitama 351-0198, Japan;RIKEN BNL Research Center, Brookhaven National Laboratory, Upton. NY 11973-5000, USA;