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PLASTIC Flight Operations November 07- April 08

PLASTIC Flight Operations November 07- April 08. K. Singer SWG April 2008. PLASTIC Flight Operations. 12/6/07: DOY 340 on SC B Increase MCP voltage to compensate for normal gain changes 3140V  3160V 12/20/07 DOY 355 SC A & B

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PLASTIC Flight Operations November 07- April 08

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  1. PLASTIC Flight OperationsNovember 07- April 08 K. Singer SWG April 2008

  2. PLASTIC Flight Operations • 12/6/07: DOY 340 on SC B • Increase MCP voltage to compensate for normal gain changes • 3140V  3160V • 12/20/07 DOY 355 SC A & B • Changed criteria for Supra-thermal to ignore background events

  3. PLASTIC Flight Operations • Flight Software load 3.2.7 • SC A: DOY 037 (2/7/08) • SC B: DOY 063 (3/3/08) • RTLT for A: 6 minutes • RTLT for B: 7 minutes • Bypassed COP1 command counter to reduce the load time

  4. Software changes • Included every 10th block of the EEPROM read back which was previously missing • Corrected timestamp on science data packets

  5. Momentum dumps have gone smoothly—DPU has been disabling and enabling high voltages on Entrance System as necessary. Gain on MCP is changing more slowly since initial scrubbing and is stable. We are using SECCHI roll calibration data for our own calibration purposes.

  6. PLASTIC Flight Operations • SC A: DOY 104 (04/13/08) • At 11:58 UT PLASTIC reset

  7. PAC VM (V) PAC CM (mA) MCP VM (V) MCP CM (mA) SSD VM (V) SSD HV BIAS (V) SSD POS ANALOG (V) SSD NEG ANALOG (V) SSD V POS DIG (V) 11:58 UT

  8. PLASTIC Flight Operations • SC A: DOY 105 • Start turning on HV’s • SC A: DOY 106-108 • Continue stepping up HV’s • SC A: DOY 108 • Start data collection

  9. SSD Temperatures

  10. SSD Temperatures since launch SC B • ~6 degree temperature change since Nov ‘06 • Delta distance to Sun: 0.1 AU

  11. ACE Temperatures • Increase in temperature is due to the degradation of the thermal blanket and not the solar cycle NOAA.gov

  12. SSD Temperatures since launch SC A • ~11 degree temperature change since Nov ‘06 • Since January 2007 Delta distance to Sun 0.01 AU • Exterior radiator

  13. Any questions?

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