ACE Weekly Report: 11-01-00 All ACE spacecraft subsystems are performing nominally. An attitude maneuver was successfully executed on 10-30-00. The next attitude maneuver is scheduled for 11-03-00. 'The SEPICA 30kV supply was shut down by the S3DPU between Oct 25 and 26 (2000/299 and 300), because of a high current limit violationThis kind of shutdown happens occasionally, but this one had an unusual side effect. When the supply was restarted on Oct 26, it was again shut down, but this time at a voltage of less than 3.4 kV. Two restart attempts were made [that day], but neither succeeded. The lack of high voltage means that SEPICA cannot measure charge states, but it will continue to measure particle fluxes.' Since then the Instrument team has decided to ramp up SEPICA at a slower rate and in smaller increments; currently it is at ~1.81 kV. Further data analysis is still being performed by the Instrument team [AR S00-005]. Maneuver Start Time=17:30:53 Maneuver End Time=17:38:09 Pre-Maneuver HGA = -3.6500 deg. Sun Angle = 6.3330 deg. Post-Maneuver HGA = 4.4888 deg. Sun Angle = 8.4400 deg. Current S/C range: 1,411,219.085 km On 10-31-00 ACE suffered ~14 minutes of data loss due to problems with the JPL SFG. JPL reset their system and no further problems were experienced during the pass. All affected SSR data was redumped and successfully captured during the support. ================================================ Jacqueline Maldonado Snell Honeywell Technology Solutions Incorporated (HTSI) Goddard Space Flight Center Bldg. 3 Rm N135C, Code 428.2 Greenbelt, MD 20771 Phone: (301) 286-7072 Fax: (301) 286-0218 E-mail: Jacqueline.Snell.1@gsfc.nasa.gov