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GLAST Large Area Telescope: TKR Hand-off review for Tower 6 Hiro Tajima SU-SLAC R. P. Johnson

Gamma-ray Large Area Space Telescope. GLAST Large Area Telescope: TKR Hand-off review for Tower 6 Hiro Tajima SU-SLAC R. P. Johnson UCSC. Power Consumption. Values for MCM measurements account for the increase due to PS voltage itself, not current increase due to voltage increase.

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GLAST Large Area Telescope: TKR Hand-off review for Tower 6 Hiro Tajima SU-SLAC R. P. Johnson

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  1. Gamma-ray Large Area Space Telescope GLAST Large Area Telescope: TKR Hand-off review for Tower 6 Hiro Tajima SU-SLAC R. P. Johnson UCSC

  2. Power Consumption • Values for MCM measurements account for the increase due to PS voltage itself, not current increase due to voltage increase.

  3. Band Channels (Tower 6) No major change observed.(except for layers indicated by yellow background.)

  4. Hit/Trigger Efficiency • Sizable drop in Y9 and Y17 (No change in # of bad channels.) • Small degradation (0.1%) of average efficiency might be due to TACK delay timing difference. (0 µs @Pisa, 1 µs @SLAC.)

  5. Other Anomalies • TE701 (Trigger Jitter test) failure on both towers. • This is an issue of requirement interpretation. • Working with trigger group to define clear requirement. • TE301 (Noise and Gain Test) failed on layer X3. • Known issue from Italy. • Tower 6 failed clock duty cycle margin test @ 58%. • Y2-LO and X9-LO failed on data readout test. • It passed at 55% (within specification).

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