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The GLAST LAT Tracker - A Large-Scale Application of Solid-State Detectors

Abstract: Large-scale detector systems based on silicon-strip sensors have been operated successfully in terrestrial particle physics experiments for many years, but applying the same technology in orbit brings several new challenges. A space-based system must operate on an extraordinarily tight power budget, must cool without the aid of air or liquids, must survive relatively severe mechanical and thermal environments, and must operate reliably without any possibility of maintenance after launch. This seminar will present how these challenges were addressed and met by the LAT Tracker design and will also focus on some of the lessons learned from fabrication problems that resulted from various design choices.
Speaker: Robert Johnson - University of California at Santa Cruz
Speaker Bio: Robert Johnson is a Professor of Physics at the University of California at Santa Cruz. He received his B.S. in physics from the University of Kansas and Ph.D. from Stanford University in the field of Experimental High Energy Particle Physics. He has worked on colliding-beam experiments at SLAC and CERN, contributing to instrumentation, reconstruction software, and data analysis in the areas of two-photon physics, b physics, and electroweak physics. During the past decade he has worked exclusively on the Gamma-ray Large Area Space Telescope mission, for which he led all of the development work on the silicon-strip tracker and served as the tracker subsystem manager during the engineering and fabrication stages.
Poster Link: Poster
Presentation: Presentation on 10/31/2007 (PDF)