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

Rachid Nouicer
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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.

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Rachid Nouicer. 2007-03-27. PHENIX Upgrade: Novel Stripixel Detector for Heavy Quark Detection and Proton Spin Structure Measurements at RHIC Energies. https://doi.org/10.1016/j.nimb.2007.04.265

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