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Summary of Risk Assessment for the GLAST Calorimeter Subsystem

This summary outlines the risk assessment and technical status of the Calorimeter (CAL) subsystem for the Gamma-ray Large Area Space Telescope (GLAST). The technical design of the CAL module is mature and verified, with most outstanding issues expected to be resolved by the completion of the electromagnetic (EM) test program in June. Major milestones are on track and contingency plans are in place. Recent delivery issues are being addressed, and the CAL subsystem is ready for flight production with minimal technical risks.

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Summary of Risk Assessment for the GLAST Calorimeter Subsystem

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  1. Gamma-ray Large Area Space Telescope GLAST Large Area Telescope Calorimeter Subsystem 13.0 Summary W. Neil Johnson Naval Research Lab, Washington DC Calorimeter Subsystem Manager neil.johnson@nrl.navy.mil (202)–767–6817

  2. Outline • Risk Assessment • Summary

  3. CAL Risk Summary

  4. CAL Risk Summary (1)

  5. CAL Risk Summary (2)

  6. Summary • The technical design of the CAL module is mature and verified • Most outstanding issues will be retired at the completion of EM test program in June • New PIN photodiode verification will complete as well in June • Updated ASIC versions will be verified in April • Essentially all documents will be released before CDR • The CAL schedule is aggressive in meeting all Level 3 milestones with appropriate schedule contingency • Recently discovered problem in deliveries of CDE will be resolved to meet the baseline schedule • CAL is ready for flight production • Technical risks are minimal • Schedule risk will be resolved

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