The construction and performance of the CsI hodoscopic calorimeter for the GLAST beam test engineering module
| Autor: | W. N. Johnson, B. F. Phlips, S. Singh, E. Ponslet, J. Ampe, J. E. Grove |
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| Rok vydání: | 2001 |
| Předmět: |
Physics
Nuclear and High Energy Physics Calorimeter (particle physics) Physics::Instrumentation and Detectors business.industry Dynamic range Electrical engineering Tapering Dead time Linear particle accelerator Photodiode law.invention Telescope Optics Nuclear Energy and Engineering law Electrical and Electronic Engineering business Beam (structure) |
| Zdroj: | IEEE Transactions on Nuclear Science. 48:1182-1189 |
| ISSN: | 1558-1578 0018-9499 |
| DOI: | 10.1109/23.958747 |
| Popis: | We describe the design, construction, and performance of the CsI hodoscopic calorimeter of the GLAST beam test engineering module (BTEM), a full-size prototype of one of the 16 towers of the GLAST large-area telescope, approved by NASA to be launched in 2005. The calorimeter is composed of 80 CsI crystals organized in a hodoscopic arrangement with eight layers of ten crystals. The crystals are read out with PIN photodiodes at both ends. Light tapering along the length of the crystals produces an asymmetry in the light measured at the ends. The asymmetry is used for interaction positioning along the length of each crystal. The major design goals included the demonstration of a mechanical design to survive launch into space with minimal passive material, low power electronics with a dynamic range of /spl sim/5/spl times/10/sup 5/, and digital data acquisition with |
| Databáze: | OpenAIRE |
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