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Status and Installation Plan for the Spectrometer Solenoid Magnets. Steve Virostek Lawrence Berkeley National Lab. MICE CM17 @ CERN February 24, 2007. MICE Cooling Channel Layout. Spectrometer Solenoid 1. Spectrometer Solenoid 2. Spectrometer Solenoid Overview. - PowerPoint PPT Presentation
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Status and Installation Plan for the Spectrometer
Solenoid Magnets
Steve VirostekLawrence Berkeley National Lab
MICE CM17 @ CERN February 24, 2007
Status & Installation of the Spectrometer Solenoids
Page 2
Steve Virostek - - - Lawrence Berkeley National Laboratory
MICE Cooling Channel Layout
SpectrometerSolenoid 1
SpectrometerSolenoid 2
Status & Installation of the Spectrometer Solenoids
Page 3
Steve Virostek - - - Lawrence Berkeley National Laboratory
Spectrometer Solenoid Overview
•Order for two spectrometer solenoid magnets was placed with Wang NMR by LBNL in June ‘06
•Design review was held by Wang on Sept 6, 2006-Complete design package book provided to LBNL
•Detailed magnet design is complete and fabrication is well under way
•First magnet shipment expected by Sep 07
•Second magnet to follow ~6 weeks later
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Spectrometer Solenoid Fabrication Update
•First machined coil former delivered to Wang
•Preparation for coil winding is under way
•First two cryocoolers to arrive at Wang on Feb 28th, two additional to follow two weeks later
•Quench protection assemblies are near complete
•Winding of fiberglass cold mass support bands will begin in early March
•50 A HTC procured, 300 A leads coming next week
•Magnet instrumentation is on order
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
He Filler Neck
Lead Neck
Cold Mass Support
PMT Iron Shield
Space for Radiation Shield Support Stand
Cooler Neck
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Lead Neck
He Gas Pipe
4.2 K Coolers
Condenser Tank
Liquid Pipe
Cold Mass
4K End
60K Intercept
300K End
Cold Mass Support
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
300 K Support End
60 K Support Intercept
Support Band
4 K Support End
Cold Mass Assembly
Cold Mass with 50 Ton Support System
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Passive Quench Protection Space
Center Coil
Match Coil 1
End Coil 1
Match Coil 2
Coil Cover
Liquid Helium Space
490 mm
690 mm
2544 mm
Coil Spacer
Spectrometer Solenoid Cold Mass
End Coil 2
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
•Single piece 6061-T6 aluminum coil former
•Each layer wet wound using Stycast 2850 FT
•2.5 mil thick fiberglass between winding layers
•Passive quench protection will be provided by a system of diodes & resistors
•Aluminum coil banding will provide hoop force support and ensure coils are tight after cooldown
•Conductor joints are to be lapped by at least 24” to minimize the I2R losses
Design Overview (coil construction)
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
First Completed Coil Winding Form
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
First Completed Coil Winding Form
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
First Completed Coil Winding Form
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Vacuum Leak Check of Coil Winding Form
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Vacuum Leak Check of Coil Winding Form
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Vacuum Leak Check of Coil Winding Form
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
G-10 Material for Coil Side Insulation
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Coil Winding Apparatus
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Coil Winding Apparatus
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
PSPower Supply ±10 V, 300 A
PS PS
Power Supply ±5 V, ±50 A
50 Amp Leads
300 Amp Leads
300 Amp Leads
A B C D E FG H
Match 1 Match 2 End 1 Center End 2
PSPS
Quench Diodes
Quench Protection & Power Supply Hookup
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Quench Protection Diodes and Resistors
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Quench Protection Diodes and Resistors
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Quench Protection Diodes
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Quench Protection Resistors
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Quench Protection Assembly Parts
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
50 Amp High TC Leads
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Winding Form for Cold Mass Support Bands
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Example of a Cold Mass Support Band
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Example of a Quench Protection Assembly
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Example of a Cold Mass Support System
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
•Two 1.5 W PT415’s will cool magnets to 45 K (1st stage) & 3.8 K (2nd stage)
•~0.05 T field @ cooler rotary valve motors (no iron shielding needed)
•Up to three coolers per magnet can be installed and removed without breaking cryostat vacuum
•Four units ordered by IIT – 1st two to arrive Feb 28th, 2nd two in ~2 weeks
Pulse Tube Cryocoolers
PT415 Pulse Tube
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Magnet Power Supplies
•Three power supplies of +300 A at ±10 V for the center and two match coils (shared for 2 magnets)
•Four power supplies of ±50 A (may need 2 @ 60 A) at ±5 V for the two end coils (2 per magnet)
•Power supply specification is nearly complete-Resolve issue of whether quick discharge circuit is needed-Address computer interface question-Settle on quantities (testing, operation @ RAL, spares)
•3 month lead time – place order soon after CM17
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Updated Schedule Summary
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
Installation Plan and Issues
•Integration discussions ongoing with RAL
•Module connection to rail system resolved
•Required lifting features being finalized
•Requirements for transfer through door of MICE hall @ RAL established
•Flange sealing options being discussed
•Vacuum pumping requirements defined
Status & Installation of the Spectrometer Solenoids
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Steve Virostek - - - Lawrence Berkeley National Laboratory
•Detailed magnet design is complete
•1st coil former at Wang & ready for winding
•50 A HTC leads at vendor (300 A to follow)
•Two cryocoolers to arrive on Feb 28
•P.S. spec is nearly complete – order ASAP
•Expect 1st magnet complete by Sep 07
•Second magnet to follow ~6 weeks later
Summary
