2009 PFC Meeting

1. 2009 PFC Meeting ITER First Wall Qualification (FWQM) Mock-up Testing M.A. Ulrickson, T.J. Lutz, T.T. Martin, J.M. McDonald, D.L. Youchison Sandia National Laboratories Boston, MA July 9, 2009 Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company,for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000. 1

2. Outline • ITER First Wall Qualification Mock-ups • Round 1 Testing (EU&US) Aug. 2008 – Nov. 2008 EB-1200 Gun #1 Only • 12,000 cycles (.875 MW/m2) • MARFE testing (1.4 MW/m2) • Additional testing (2.2 MW/m2) • Round 2 Testing (CN,JA,KO,RF) Mar. 2009 – Aug. 2009 EB-1200 Gun #1 & Gun #2 • 12,000 cycles (.875 MW/m2) • MARFE testing (1.4 MW/m2) • Summary 2

3. Be Tiles (3) 80 mm CuCrZr Heat Sink SS Back Plate FWQM geometry All S65C Be tiles 5/6 use HIPping RF uses fast braze 3

4. FWQM mounting prior to testing EU US dummy dummy 4

5. EB-1200 Door Mount • leak checking instrumentation calibrations Targets: 20 TCs, 2 pressure transducers, 8 RTDs, 4 flowmeters 2 pyrometers and 2 IR cameras 5

6. Diagnostics 1 1 2 3 4 5 6 7 6 3 7 5 2 4 6

7. UCLA FQWM CFD Conjugate Heat Transfer Modeling Maximum surface temperature remains the same in reversed flow configuration Reverse Flow Normal Flow Blue: Reverse Flow Green: Normal Flow Thermocouple temperatures 7

8. TV0 raster patterns adjusted to match calculated surface temperature distribution. 8

9. IR Thermography – North camera 9

10. EU Experimental temperature profile from uniform heat flux 10

11. IR Thermography – South camera 11

12. US Experimental temperature profile from uniform heat flux 12

13. Emissivity Maps Uncorrected (T=225C) corrected emissivity map 13

14. Last of 12000 cycles at 0.875 MW/m2 Pyrometer surface temperature reading from middle tile, EU (blue) mockup and US mockup (green). Absorbed power for last shot of the day, US absorbed power in red, EU absorbed power in green. Temperatures read by thermocouples imbedded in the middle tile, US mockup (blue) and EU mockup (orange). 14

15. 1000 cycles at 1.4 MW/m2 (MARFE) Absorbed power for MARFE conditions last shot, Green is EU and Red is US mockup 15

16. Post-MARFE testing (1.4 MW/m2) 16

17. Additional Testing, last 20 cycles (2.2 MW/m2) Absorbed power for cycles 82-102 Average center tile Temperature from the IR camera for cycles 82-102. 17

18. Post-Additional testing 18

19. Round 2, Pre-testing JA KO CN RF 19

20. TC installation 20

21. IRControl image @ 2382 cycles Infrared image during heating of mockups 1 and 3 at end of cycle 2382 – Grid areas are used for evaluating the mean and variance of each tile 21

22. IRControl image @ 2382 cycles Infrared image during heating of mockups 2 and 4 at end of cycle 2382 – Grid areas are used for evaluating the mean and variance of each tile 22

23. ~200 cycles at 0.875 MW/m2 (48sON/48sOFF) 32 min shot >6300 cycles as of 7/02/09 Absorbed Power traces for all four mockups during last shot of the day: Mockups 1 and 2 (tgt01 and tgt02) are heated by Gun2, mockups 3 and 4 (tgt03 and tgt04) are heated by Gun1. 23

24. Current status, KO mock-up removed JA CN RF dummy • KO mock-up developed water leak at cycle 2383 in 12-mm-dia tube. Repair was not possible. Removed on 6/08/2009. • JA mock-up has partially un-bonded ss tubes since fabrication, but performing within acceptable margins. 24

25. EU BESTH device (Czech Rep.) 25

26. Summary • FWQM testing in Round 1 (completed 11/08) • EU & US passed Round 1 in US • Waiting for MARFE/Additional in Judith in EU • Currently above 6300 cycles in Round 2 testing • CN, JA, KO, RF MARFE testing in August • KO mock-up pulled, replacement for MARFE testing • JA 12-mm-tubes not well attached to CuCrZr • Following next year – semi-prototype testing ? 26