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MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek MICE Spectrometer Solenoid Design and Assembly.

Published byBritney Lambert Modified over 8 years ago

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Presentation on theme: "MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek MICE Spectrometer Solenoid Design and Assembly."— Presentation transcript:

1 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek MICE Spectrometer Solenoid Design and Assembly

2 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 2 Magnet Design Features 5 coils on a single mandrel 200L LHe volume in cold mass 5 ea 2-stage cryocoolers for recondensing helium vapor and cooling the shield Vapor and return LHe pass thru the same cooler tubes at the top of the cold mass 8 ea HTS leads feed the 5 coils 60K thermal shield made from series 1100 Al

3 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 3 Internal Design Details

4 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 4 Internal Design Details

5 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 5 Coil Winding Mandrel - 6061-T6 aluminum mandrel - Forged tube, machined profile

6 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 6 Coil Winding Process - Stycast epoxy wet coil winding - Fiberglass cloth between layers

7 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 7 Completed Coil Windings - 1.65 mm x 1.0 mm superconductor - 222 Nb-Ti filaments, ~4:1 Cu/SC ratio

8 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 8 Banding and Axial Reinforcement - Wound aluminum banding w/Stycast - Welded aluminum axial stiffeners

9 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 9 Completed Cold Mass - Welded aluminum clamshell type cover - ~200 liter cold mass interior volume

10 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 10 Vacuum Side Coil Leads - LTS leads heat sinked to cold mass body - Commercial ceramic feedthroughs

11 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 11 Cold Mass MLI Spacers and Heaters - Spacers help prevent thermal shorts - Heaters provide pressure regulation

12 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 12 MLI Wrapped Cold Mass - ~32 layers of aluminized Mylar MLI - Interleaved joints, Mylar tape

13 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 13 Cold Mass End Wrap Detail

14 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 14 60K Shield Assembly - Series 1100 aluminum thermal shield - Copper transition for cooler connection

15 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 15 Nested Cold Mass/Shield - Cold mass nested in shield before installation in vacuum vessel

16 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 16 Cold Mass Vent and Fill Lines - Fill and vent lines intercepted at shield - Thinned out walls limit conduction

17 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 17 Shield Prep for MLI - ~60 layers MLI on thermal shield - Fiberglass cloth protects during welding

18 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 18 Shield/Cold Mass Installation

19 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 19 Cold Mass Alignment - Cold mass alignment using portable CMM

20 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 20 Cold Mass Support Bands - Fiberglass bands for low heat leak - Intermediate intercept at 60K shield

21 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 21 Mounting of Cold Mass Supports - Support bands are pre-tensioned during cold mass alignment

22 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 22 60K Support Band Intercepts

23 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 23 Thermal Shield Support Band - Low heat leak fiberglass bands support weight of thermal shield

24 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 24 Thermal Shield Bore MLI Wrap

25 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 25 Shield End Plate Installation - Shield end plates are welded to bore and outer tube - Saw cuts in end plates minimize eddy currents

26 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 26 Vacuum Vessel End Wall/Warm Bore

27 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 27 Benchtop Cooler Tower Assembly - Drop in arrangement simplifies cooler installation - Some heat leak in thin walled sleeves

28 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 28 Cooler Tower Install on Vessel

29 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 29 Thermal Intercepts for Lower HTS Leads - Thermal intercepts to cold mass provide cooling for bottom end of HTS leads

30 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 30 HTS Lead Installation - HTS leads bolted and soldered at both ends - Pre-installation tests ensure integrity

31 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 31 Warm Lead Configuration - Warm leads optimized to balance heat leak and resistive heating - Heat intercepted at 1 st stage plate

32 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 32 Upper HTS Lead Thermal Intercept - Wang NMR designed double intercept - Bypass leg provides current path

33 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 33 Single Stage Cooler for HTS Leads - Single stage cooler directly protects HTS leads - 175 W of cooling power at 55K

34 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 34 Warm Lead/Feedthru Assembly - Ceramic feedthrus very fragile - Technique developed for rapid replacement

35 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 35 Power Feedthrus w/Copper Flags

36 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 36 1 st Stage Cooler to Shield Connection - Layered copper sheets connect coolers to shield - Also shields cooler sleeves from direct radiation

37 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 37 Completed Cooler Tower Assembly

38 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 38 Completed Magnet

39 MICE Spectrometer Solenoid Recovery Review - December 3-4, 2015 - Steve Virostek 39 Other Information The two magnets shipped to RAL are virtually identical in design SSU (1 st magnet completed) performed better cryogenically than SSD Wang NMR went thru several design iterations due to various performance deficiencies LBNL and MICE collaborators took a lead role in the final design and assembly of the magnets

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