Title :
Improving pixel detectors: Active area optimization and high temperature annealing
Author :
Fadeyev, Vitaliy ; Gerling, Mark ; Wright, John ; Maddock, Patrick ; Betancourt, Christopher ; Hurley, Ford ; Sadrozinski, Hartmut F W
Author_Institution :
Santa Cruz Inst. for Particle Phys., Santa Cruz, CA, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
The existing pixel tracking detectors of ATLAS and CMS experiments will have to be replaced after LHC luminosity upgrade (super-LHC or sLHC), due to increased radiation level and tracking performance requirements. We are studying device active area re-optimization by cutting away dead area and some of the guard rings of existing sensors. Performance of the cut sensors will be described. We also present a feasibility study of operating irradiated silicon sensors after extreme temperature excursion characteristic of a standard bump-bonding process. This is relevant for high dose radiation studies before a sLHC-quality readout ASIC is developed.
Keywords :
annealing; bonding processes; position sensitive particle detectors; semiconductor counters; semiconductor technology; surface treatment; ATLAS pixel tracking detectors; CMS pixel tracking detectors; LHC luminosity upgrade; active area optimisation; bump-bonding process; extreme temperature excursion; high temperature annealing; irradiated silicon sensors; pixel detectors; sLHC; sensor guard rings; super-LHC; Annealing; Application specific integrated circuits; Collision mitigation; Detectors; Large Hadron Collider; Laser beam cutting; Mechanical sensors; Sensor phenomena and characterization; Silicon; Temperature sensors;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5402232
