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Tracker Alignment System

Tracker Alignment System. Chris Tutt AMS-02 Project Manager. Review of Hazard. Hazard to be addressed is uncontrolled use of lasers causing optical damage to personnel or equipment.

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Tracker Alignment System

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  1. Tracker Alignment System Chris Tutt AMS-02 Project Manager AMS-02 Phase II Safety Review

  2. Review of Hazard • Hazard to be addressed is uncontrolled use of lasers causing optical damage to personnel or equipment. • Tracker Alignment System (TAS) uses a series of infrared lasers to measure relative movements of the tracker planes. AMS-02 Phase II Safety Review

  3. TAS System Schematic AMS-02 Phase II Safety Review

  4. Laser Safety Analysis • Nominal Optical Hazard Distance (NOHD) calculated for TAS lasers at three key locations in the system per ANSI standard. • Emission at diode window: 2.78 cm • Emission at LFCR output: 4.64 cm • Emission at LBBX output: 6.81 m • Only LBBX output is significant distance, but that beam is trapped in tracker inner volume. • Tracker inner volume has light-tight vents. • All TAS hardware underneath MLI blankets. AMS-02 Phase II Safety Review

  5. Upper LBBXs Installed Position AMS-02 Phase II Safety Review

  6. TRD/UTOF Installed Position AMS-02 Phase II Safety Review

  7. Lower LBBX Installed Position AMS-02 Phase II Safety Review

  8. Lower USS Installed Position AMS-02 Phase II Safety Review

  9. LFCR Installed Position AMS-02 Phase II Safety Review

  10. Proposed Safety Controls • TAS lasers are low-power, diffuse, and completely contained within tracker inner volume. • No special safety controls are needed during nominal operations. • LBBXs are inaccessible to ground personnel without dismantling payload. • LFCRs are accessible if MLI removed, but any maintenance operations would be done by trained personnel. • TAS system will only be powered on during most of KSC stay. • KSC concurrence documented in Use Authorization K-GU-50101. AMS-02 Phase II Safety Review

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