PHENIX Upgrade: Novel Stripixel Detector for Heavy Quark Detection and Proton Spin Structure Measurements at RHIC Energies

Abstract

New design of silicon stripixel sensor has been developed at BNL for PHENIX upgrade. The sensor is a single-sided, DC-coupled, two dimensional position sensitive device with good position resolution. This design is simpler for sensor fabrication and signal processing than the conventional double-sided strip sensor. HPK has produced pre-production stripixel sensors with thickness of 625 um. The quality assurance tests show that the very low leakage current 0.12 nA per strip allows the use of the SVX4 chip. A long term stability test shows that the leakage current is stable over a long period of time. The study of the effects of irradiation on the performance of the stripixel sensor has been made using p+p collisions at 200 GeV at PHENIX, 14 MeV neutron and 20 MeV proton beams.

12 pages, 8 figures, 19th International Conference on the Application of Accelerators in Research and Industry, August 20 - 25, 2006, Fort Worth, Texas U.S.A. to be published by Elsevier in NIM-B

References in corpus (3)

• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Double Helicity Asymmetry in Inclusive Mid-Rapidity neutral pion Production for Polarized p+p Collisions at sqrt(s)=200 GeV
• Single Electrons from Heavy Flavor Decays in p+p Collisions at sqrt(s) = 200 GeV

Cited by in corpus (4)

• Nuclear-Modification Factor for Open-Heavy-Flavor Production at Forward Rapidity in Cu+Cu Collisions at sqrt(s_NN)=200 GeV
• Status and Performance of New Silicon Stripixel Detector for the PHENIX Experiment at RHIC: Beta Source, Cosmic-rays and Proton Beam at 120 GeV
• Heavy Flavor Physics in PHENIX
• Recent Results from PHENIX Experiment at RHIC: Exploring the QCD Medium