SHMS Status Hall C Users Feb. 2014

1. SHMS Status Hall C Users Feb. 2014 Paul Brindza

2. SHMS Construction Feb 13, 2014

3. SHMS Outline • HB magnet construction • Q1 magnet construction • Dipole magnet construction • Q2Q3 magnet • JLAB magnet components • Hall C Infrastructure

4. HB Construction • Coils complete and LHE tested • Helium vessel assembly underway • Helium vessel backbone complete • Coil 1 installed, shimmed and welded in • Coil 2 installed, shimming underway • LN2 shield sub-assemblies underway • Warm Yoke complete • Vacuum vessel components complete • Assembly of helium, vessel around coils has taken longer than expected- current ETA is April 2014 • Delivery to JLAB – August 2014 • Monthly visits by JLAB to MSU to keep up pressure

5. Status of HB Manufacturing First coil inserted in helium vessel (covered by middle plate) Thermal shield test-fit onto Helium vessel.

6. HB Helium Vessel Top vessel viewin vertical position Wiring from bottom through conduit to top, 5 mil kapton sheet between coil ends and retainers.

7. Status of HB Manufacturing Hi-pot test at 1500+ V with back plate clamped Lead out insulated

8. Status of HB Manufacturing Back plate tack welded Vessel repositioned for bottom coil shimming (bottom coil up)

9. HB Schedule

10. Bore of Q1 Magnet

11. Q1 Magnet Status • Coils- complete and tested • Yoke- complete • Cold mass assembled and tested • Warm field mapping complete • Cryostat Components(Helium, LN2, Vacuum) complete • Helium vessel assembly around cold mass underway • LN2 shield and Vacuum vessel assembly TBD • Factory testing • Delivery to JLAB – July 2014

12. Yoke Containment Shells

13. Q1 He Vessel

14. Q1 LN2 Shield

15. Q1 OVC Vessel

16. Q1 Schedule

17. Q1 Magnet - Summary • Construction well-advanced. • Schedule risk being carefully monitored. • 60% of sub-contract is complete. • Good performance for the last 8 months. • Using incentives to advance delivery date. • No known technical risks: • Typical manufacturing tasks and workmanship remain. • QA and vendor oversight processes in place.

18. Dipole Q2Q3 Highlights Oct 2013- Feb2014 • Site visits @ SigmaPhi Oct ,Nov ,Dec, Jan, Feb….. near continuous presence by JLAB engineers • Q2Q3 FDR complete with punch list Oct 2013 • Production Consolidation Equipment Operational • Dipole Prototype VPI completed Dec 13 • Second winding station complete • Second source of coil spacers delivering ~ 1 layer per week( see the video) • Conductor properties 300K and 4 K results including shear measurements exceed requirements

19. Production Coil winding

20. Production coil 1st segment and spacer installed

21. Dipole Construction Underway • First dipole production coil winding started Feb 17 • First segment (25 turns) and spacer installed today • Second dipole production coil wind start March 12 • Dipole cryostat at Chastigny and ASME overlay at APAVE proceeding well • 4 K measurements of conductor compression modulus excellent results 148MPA @ 4 K • 300 K improved measurements with extensometer demonstrate that the initial “soft strain” was a measurement artifact. This makes the coil preload much easier and reduces the interference required. • Shear measurements in reasonable agreement with JLAB/Hall B/Torus

22. Prototype Coil Results • Winding • Techs, equipment and winding went well • late delivery of spacers caused delays resolved with the second source • Coil Resistance and ringing tests results all OK • Equipment is sensitive to single shorted turn • VPI • Equipment worked OK except for mold leaks which allowed air intrusion causing some voids. Leaks were found and cause (rusty mandrel)eliminated. • Mold release on coil spacers worked as planned • VPI process improvements to preclude a repeat • Confidence high so proceed to production!!!!

23. Prototype in VPI Mold

25. Objective N°1: Improvethe impregnationquality • Modifications implemented: • Replace G10 sheet 0.2 mm by fiber glass cloth for easierresin flow • Increase the numberof holes in the G10 sheet(0.3 mm thickness) • Sand blast moldfor bettervacuum seal • Tilt the mould (20-30°) to favor the resin flow in between the conductors • Install the resinmixer above the moldto trap the air bubblesinside the feedpipes • Keep more pressure above the resininside the malaxer to slow down the impregnation • Sequential injection • Increase the curing duration to about 30h (cold point at 120°C hot point at 135°C) • Objective N°2: Makethe resinless sensitive to cracking • Modifications Implemented: • Improvethe injection geometry: largerdraft (30 degrees tilt) • Addflexibilizertothe resin

26. Conductor testing • Compressive stress strain results demonstrate that ALL dipole conductors have near identical properties- no need to sort conductor • 300 K results from UBS lab using an extensometer demonstrate that the initial “soft strain” is a measurement artifact arising from surface defects and using platen travel- more good news! • 4 K results demonstrate average compressive yield at 148 MPA as compared to 100 MPA stress levels at 11 Gev - adequate margin at operating current. • Shear results to date indicate adequate margin. More measurements planned. Good agreement with JLAB measurements.

27. Compression results @ 300K

28. Test Instron at UBS with LVDT’s and Extensometer

29. 4 K Conductor compression results from CEA/Saclay

30. Production consolidation equipment30 meters per hour

31. Production winding lines at SigmaPhi

32. Prototype in production oven

33. Dipole Schedule

35. Summary- SigmaPhi Magnets • Production coil winding • coil 1 started Feb 17 • coil 2 March 12 • Coil spacer delivery solved by second source delivery now one set per week • First double layer of production coils 1 and 2 will be separately impregnated to verify VPI. • Dipole conductor mechanical property measurements excellent results confirm adequate margins • Dipole delivery June 2015 • Q2Q3 delivery Aug/Oct 2015

36. Magnet Components by JLAB • HB/Q1/Q2/Q3/Dipole Conductor • Cryogenic Control Reservoir (5 magnets) • Warm Yoke Steel (3 magnets); Q1 cold yoke by SMI; HB by MSU • DC Power Systems (5 magnets) • Instrument and Controls (5 magnets) • Stands and Mounts (5 magnets)

37. Magnet Components by JlAB-complete

38. SHMS Cryo System • Re-use G0 transfer line- Mods by Hall C Complete • Re-use G0 flex gas return lines- Ready to install • New flex cryo-line support – Installation March 2014 • New SHMS transfer line- Installed Feb 2014 • New U-tubes,L-tubes magnet connections complete, delivered and tested at JLAB • Warm gas return system manifolds- complete • Warm gas return system- installation underway

39. SHMS Installation • Rails and mounts complete • Steel Structure complete • Shield House concrete – last pour Friday Feb 14, 2014 • Equipment deck 99% complete • Magnet stands installed • SHMS transfer line installed • Target access platform contracted • Shield house interior shielding contracted • Shield house raised floor- bids in-award soon • Electrical and LCW installation underway

40. SHMS Summary • All magnets in production • Delivery of last magnet (Q3) still very tight • Issues with conductor properties resolved • JLAB magnet components all complete and delivered or installed or awaiting installation • SHMS Cryo system all components on site and tested transfer line installed • SHMS assembly in Hall C proceeding very well • First magnet delivery July 2014 and we will be ready

41. Happy Days!!!