1. Status of the SWAP instrument
29-Nov-2006
Jean-Marc Defise - CSL
SCSL Meeting – ISSI, Nov 2006

2. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP Status
STM tests are completed
Tests with BB electronics are completed
All FM components are delivered to CSL
MCPM FM not ready
SWAP FM is currently under assembly, alignment & verifications
SCSL Meeting – ISSI, Nov 2006

3. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP Status
FM Structure
Invar optical bench + black coating, “isostatic” mounts
SCSL Meeting – ISSI, Nov 2006

4. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP Status
FM Structure
Invar baffles & housing – internal parts are black (to visible light)
SCSL Meeting – ISSI, Nov 2006

5. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Integration
Optics
Flight mirrors (FM1 + SM2) have been mounted on the SWAP optical bench
Alignment (on-axis) with SFE < l/30 rms (633 nm) on a dummy camera (representative of the flight camera)
Offset optical axis ./. mechanical axis is currently under verification  need to assess coalignment with LYRA
Alignment (interferometry) is currently under verification
SCSL Meeting – ISSI, Nov 2006

6. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Integration
dummy camera
used to reflect back the
focussing beam from the telescope and the interferometer
Optical alignment
SCSL Meeting – ISSI, Nov 2006

7. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Integration
Interferometer
Alignment tool for M2
SWAP FM optical bench
Dummy camera M1
Optical alignment
SCSL Meeting – ISSI, Nov 2006

8. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Integration
Optical alignment
SCSL Meeting – ISSI, Nov 2006

9. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Integration
Optical alignment
SCSL Meeting – ISSI, Nov 2006

10. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Cover mechanism
White paint of cover mechanism had to be reprocessed in sept 06 (peeling after TV, process was changed wrt prelim. samples).
FM cover mech. was TV cycled with funct. testing.
FM cover mech. was vibrated on the FM structure, with SM mirrors + filters, combined tests for mech. acceptance + filter selection.
Final coating (white paint) is now OK.
FM cover mech is ready for integration.
SCSL Meeting – ISSI, Nov 2006

11. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Filters – Current status
Air flow study, design of labyrinths & venting outlets 
Delta pressure test on real filters 
Thermal balance test with Sun simulator (ESTEC) 
Theoretical studies (optical artifacts) of grid supports 
Vibration tests with STM 
Tests with 
reinforced grid filters
enlarged labyrinths
addition of “acoustic baffles”
negotiated “notched” vibration spec
New tests with polyimide front filter + reinf. grid focal filter 
Negotiate safety conditions for S/C AIV to be done
SCSL Meeting – ISSI, Nov 2006

12. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Filters – Selected baseline
Front filter = polyimid + Al
Focal filter = reinforced grid + Al
No “flare” diffraction
Only grid shadow on the focal plane but with low modulation (filter is not very close to sensor)
SCSL Meeting – ISSI, Nov 2006

13. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Proximity Electronics (PE)
FM PE (with FM sensor) was received and tested in last June-July.
Latch up detection at startup due to a bad resistor
Correction implemented at CSL
SCSL Meeting – ISSI, Nov 2006

14. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Proximity Electronics (PE)
FM PE integrated in focal plane assembly (FPA) in July.
FPA = PE with CMOS sensor
+ housing
+ cooling/heating system
+ diodes
FM FPA delivered to CSL in Aug 06
SCSL Meeting – ISSI, Nov 2006

15. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Proximity Electronics (PE)
Tests of the PE in FPA outlined a problem in the SRAM memory
Investigations showed that the board had an intenal short with ground through a mounting hole
1 FPGA + 1 SRAM components had to be replaced + new external wiring to replace the erroneous track
First tests indicate that the repaired hardware works
SCSL Meeting – ISSI, Nov 2006

16. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Proximity Electronics (PE)
Final agreement with ESA to use FM repaired board is pending on a diagnostic on the memory failure (which is not clearly explained now, but also used in several other ESA programs).
Analysis is currently performed by the component manufacturer.
If needed, the Spare FM PE can still be assembled. But major impact on schedule.
SCSL Meeting – ISSI, Nov 2006

17. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Thermal Blanket (MLI)
Fit check was performed at CSL in Aug 2006
MLI is used to keep SWAP isolated from platform thermal environment
SCSL Meeting – ISSI, Nov 2006

18. SCSL Meeting – ISSI, 29-30 Nov 2006
MCPM Status
MCPM provides on-board data processing, storage and packetization
cPCI interface with cPCI bus to S/C ADPMS
MCPM BB is currently used for tests
MCPM FM
- cPCI connectors procurement was problematic (type imposed by S/C !)
Press-fit cPCI connectors assembled first (unusual process)
2 boards currently under assembly at CRISA
SCSL Meeting – ISSI, Nov 2006

19. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM Status
Mass & Power Status
Spec
Measured
Mass SWAP FM
10.0 kg
9.755 Kg
Power SWAP FM
2.0 W aver
1.4 W idle
2.5 W acqu
Mass IIU
1.2 kg
0.715 Kg
SCSL Meeting – ISSI, Nov 2006

20. SCSL Meeting – ISSI, 29-30 Nov 2006
SWAP FM – Open Work
PE final characterization (on-going)
Final assembly of full FM unit with repaired PE after ESA green light
Vibrations
Thermal tests
EMC/EMI with LYRA & IIU ESTEC)
EUV PTB
SCSL Meeting – ISSI, Nov 2006

21. SWAP Instrument Consortium
J. M. Defise
J.P. Halain
F. Denis
T. Thibert
L. Rossi
E. Mazy
P. Rochus
U. Schule
D. Berghmans
J.F. Hochedez
B. Nicula
G. Lawrence
A. Zhukov
R. Van der Linden
F. Clette
V. Slemzin
L. Wauters
L. Podladchikova
SCSL Meeting – ISSI, Nov 2006