1. THEMIS INSTRUMENT SUITE
FM4/FM5 PRE-SHIP REVIEW
INTRODUCTION
Davin Larson
SST Lead
University of California - Berkeley

2. Outline Summary of SST Status at FM1 PSR FM1-5 Configuration by SN
End-Item Data Package
Final Test and Cal Results vs. Requirement Fulfillment
Open Items

3. Status
Current SST-DAP Status:
FM1 - Delivered
FM2 - Delivered
FM3 - Delivered
FM4 - Delivered
FM5 - Delivered
FM6 - Delivered (Needs memory test following conformal coating)

4. Status
Current SST-Sensor Status:
FM1 – (S01 & S02) Delivered
FM2 - (S06 & S04) Delivered
FM3 - (S05 & S10) Delivered
FM4 - (S07 & S09) Delivered
FM5 - (S11 & S12) Complete, Calibrated, awaiting delivery.
FM6 - (S03 & S08) Refurbished, requires workmanship vibe.

5. Flight Configuration
Current flight configuration of sensors and DAPs for all flight units.

6. FM1 EIDP: Sensors
THEMIS SST Sensor: (Sensor1:Binder #33; Sensor2: Binder #34)
Electrical Assembly
Schematics
Electrical Assembly Records
Rework/Repair history
Electrical test results
QA signoffs
Mechanical Assembly
Mechanical drawings
Vibration test results
Thermal Vac test results
Assembly Records.
Special TVAC Acceptance Test Data.

7. FM1 EIDP: DAP THEMIS SST DAP: (Binder#2) Schematics
Electrical Assembly Records
Rework/Repair history
Electrical test results
QA signoffs

8. SST Vibration Testing
(Pictures of Probe 2 units)

9. SST Acceptance Level Dynamic Test SST Serial Number
Test Date Following Initial Build
Retest Date (Rework/Redesign)
001, 002
13 Jan 05
Oct 11, 2005
(full-qual)
003, 004
22 Apr 05
Nov 4, 2005
(workmanship)
006, 008
June 13, 2005
007, 009
May
Nov 7, 2005
011, 012
Nov
Not needed
005, 010
Dec

10. SST Acceptance Level Dynamic Test
Per UCB THEMIS Document THM-SST-PRC-002
All 3 Axes
Sine Survey, 0.5 G, 5 – 2000 Hz
Sine Strength per Swales TM2430-RevD, 29 November 2004
Random
Per Swales Document TM2430-RevD
12.51 G RMS
1 min duration per axis
All Vibration Testing Performed at Quanta Laboratories
Retesting (if required)
‘Workmanship Shake’
Validate any design changes following original Flight build shake
Validate rework of any failures on previous vibration test
Entire vibration protocol, single axis only
Acceptance Sine Strength Specification
SST Flight Unit
Acceptance Level Random Specification

11. SST TVAC Testing SST Serial Number Test Date Following Initial Build
Retest Date (Rework/Redesign)
001, 002
5 Jan 05
Not needed
003, 004
28 Apr 05
006, 008
Sept 7, 2005
Dec (sensor 6 only)
007, 009
May 25, 2005
not needed
011, 012
Dec
005, 010
Dec 20, 2005 to
Jan 11, 2006
(8 cycles)

12. Thermal Profile
Procedure: THM-SST-PRC-003

13. SST -Magnetic cleanliness
SST Magnetic Cleanliness Testing Status
All units have been tested and are nominal.

14. SST -Magnetic cleanliness
SST Sensor 07
All units have been tested and are nominal.

15. SST -Magnetic cleanliness
SST Sensor 09

16. SST -Magnetic cleanliness
SST Sensor 11

17. SST -Magnetic cleanliness
SST Sensor 12

18. SST Requirements SST Mission Requirements Fulfillment:
FM1 MR fulfillment noted in THEMIS Verification Matrix (see MSE Presentation)
Integrated SST and component parts compliant with mission requirements

19. Open PFRs
None

20. Recent PFRs
PFR 169-
Found poor ion energy response in 2 sensors. (S03 and S08). Found only in sensors that had undergone electron testing.
Discovered that plasma discharges from the electron gun had inadvertently damaged adjacent ion detectors. (electron detectors where protected by foil that stopped all ions and never showed any damage.)
Subsequent testing with the electron gun is done with the open (ion) detectors covered. Electron gun has also been refurbished.
Swapped affected sensors with spares (S05 and S10).
Replaced damaged open (ion) detectors in affected units. These are now the new spares.
PFR is closed.

21. Results of Testing/Calibration
Energy Threshold vs temperature measured and acceptable
Energy resolution acceptable (<13 keV at 5C).
Detector gain measured and is stable over temperature.
Channel crosstalk measured and acceptable (<20 keV)
Attenuator functions over full operational Temp range.
Heater/Thermostat Functional at < -50 C *!
Magnetic moments measured and deemed acceptable.
End to End performance verified.
(*!) Noise susceptibility from BAU is very low now