Ruben Carcagno Fermilab September 20 2012 Introduction About a year ago the MICE Collaboration asked Fermilab for urgent help to provide a cold test facility for the Coupling Coils A plan was developed and approved by ID: 267763
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Slide1
Coupling Coil Test Facility Update
Ruben Carcagno
Fermilab
September 20, 2012Slide2
Introduction
About a year ago, the MICE Collaboration asked Fermilab for urgent help to provide a cold test facility for the Coupling Coils.
A plan was developed and approved by
Fermilab’s directorate on January 17, 2012. Main elements of the plan:Use a SMES cryostat from the National High Magnetic Field Lab found by LBNLFabricate and Install a new “Solenoid Test Facility” at Fermilab’s Central Helium Liquefier (CHL), with first use for MICE coupling coil solenoid testing Examples of future possible use of this facility include mu2e Transport Solenoids (with test stand upgrades) and additional test stands for ITER CS modules and mu2e Production SolenoidA Fermilab initial review of the test facility preparations took place on February 2012. The review committee agreed with the proposed approach. Work on this new facility quickly ramped up.
September 12, 2012
Ruben Carcagno | MICE Collaboration VC
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Test Requirements and Scope of Work
Functional Test Requirements Specified (TID-N-445)
Main objective is to train the coil and verify that it can hold a minimum test current of 210 A for at least 24 hours, and also include a thermal cycle
Statement of Work Specified (TID-N-465)The SOW for the various institutions involved (FNAL APC/TD/AD and LBNL) has been agreed and documentedInterface Documents In Progress (TID-N-466, etc.)Documents specifying the detailed technical interfaces between major institutional deliverables have been filled in with design information.
September 12, 2012
Ruben Carcagno | MICE Collaboration VC
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Cold Mass Preparations (LBNL)
Includes cooling tubes welding, installation of leads stabilization, passive QP (cold diodes), instrumentation, etc
.
Installation nearly complete, leak repair in progressSeptember 12, 2012Ruben Carcagno | MICE Collaboration VC
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Cooling Tubes Connections
SC Leads Stabilization
Cold QP Diodes Leads StabilizationSlide5
Cold Mass Preparations (LBNL)
Cooling Tube Vacuum
Leak
found during checkout Delivery to Fermilab delayed while leak is being fixedSeptember 12, 2012Ruben Carcagno | MICE Collaboration VC
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Test Cryostat
The Test Cryostat was brought to Fermilab from
the NHMFL in Florida
and installed in the CHL building, South AnnexUnnecessary internals were removed, and both the vacuum vessel and the top plate were leak checked and passedSeptember 12, 2012Ruben Carcagno | MICE Collaboration VC
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Top Plate Insert
Cryo
piping
more than 90% completeCurrent leads and coil support structure design completed, fabrication in progressSeptember 12, 2012Ruben Carcagno | MICE Collaboration VC
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Current Leads
Conduction-cooled, optimized for 220A
Two thermal intercepts: 60K (thermal strap to 4.5K
GHe return pipe) and 4.5K (Wang NMR intercept to 4.5K boiling He reservoir)Low Temperature Superconductor (LTS) section between 4.5K intercept and coil leadsG-10 mechanical support for magnetic forcesDesign and detailed drawings complete, fabrication in progress and nearly completeSeptember 12, 2012
Ruben Carcagno | MICE Collaboration VC
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Room Temperature
60K Intercept
4.5K Intercept
LTS cable to Coil leadSlide9
Top Plate
All valves and instruments procured, installation in progress
Instrumentation tree fabricated, passed leak check
Dished Head fabrication in progress at Meyer Tool, delivery September 21, 2012September 12, 2012Ruben Carcagno | MICE Collaboration VC
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New Dished HeadSlide10
Dished Head Fabrication
Ready for delivery from Meyer Tool
Next is Load Test and Vacuum Leak Check at Fermilab
September 12, 2012Ruben Carcagno | MICE Collaboration VC10Slide11
Cryogenic System
Liquid Helium and Helium gas recovery provided by the Central Helium Liquefier (unused after the
Tevatron
shutdown in September 2011)Up to 10 g/s of liquid helium at 4.5K will be supplied to the Coupling Coil cooling tube from a nearby CHL 10,000 Gallon liquid helium DewarHelium inlet temperature during cooldown/warmup will be controlled to maintain a maximum cold mass gradient of 50KThe return helium will be warmed up to room temperature before sending back to the CHL facility for recoveryNo venting to atmosphere expected during a quench (small LHe inventory in the cooling tube)
September 12, 2012
Ruben Carcagno | MICE Collaboration VC
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CHL Distribution System
Liquid Helium (
LHe
)Transfer Line from 10,000 Gallon LHe dewar
to Bayonet Can
September 12, 2012Ruben Carcagno | MICE Collaboration VC
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Bayonet Can
LHe
Transfer Line
Connection to
LHe
DewarSlide13
Cryogenic System P&ID
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U-Tube to Bayonet Can
Return Gas to
Warmup
HeaterSlide14
Electrical and Software Systems DAQ, Quench Detection, Controls
Design complete, more than 25 detailed electrical drawings completed
Racks assembled, networking installed and operating, checkout
completedSoftware design complete, configuration and checkout in progressLocal control station at CHL and remote station at IB1 Magnet Test Facility controlE-log and measurement data will be available on the webSeptember 12, 2012
Ruben Carcagno | MICE Collaboration VC
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Remote Test Stand control station at IB1 Magnet Test Facility Control Room
Electronic racks at CHL near cryostatSlide15
Local Test Stand Controls
September 12, 2012
Ruben Carcagno | MICE Collaboration VC
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CHL Test Stand Control Room (Climate Controlled, Acoustically Insulated)
Test Stand Electronic Racks and Monitors near Test CryostatSlide16
Voltage Taps DAQ and Quench Detection System
Similar Fermilab system being used successfully for the MICE Spectrometer Solenoid Test at Wang NMR
Example: Quench on 6/26/12, I = 215 A
September 12, 2012Ruben Carcagno | MICE Collaboration VC16
Quench developing at “End Coil 2”
QD tripped power system when the 5.5 V threshold was exceeded after ~140ms from
Quench
O
nset
Voltage tap signals recorded during ~30 sec current decay
Quench OnsetSlide17
Power System
The Test Facility Power System Rack will be delivered by LBNL
in September 2012
Power Supply procured by LBNL, arrived from vendor in the UK on 9/17/2012The power system rack components are shown in the following block diagramSeptember 12, 2012Ruben Carcagno | MICE Collaboration VC
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Safety
A special ES&H safety panel has been appointed by the AD Head to review the magnetic, electrical, and mechanical safety of the test stand installation in CHL premises
A permanent CHL cryogenics panel will review the cryogenics integration of the cryostat into the CHL cryogenic system
A special engineering panel has been appointed by the TD Head to review the safety of the cryostat and its ancillary equipment Both AD and TD Heads will sign the Operational Readiness Clearance after all safety panels recommend safe operational readinessSeptember 12, 2012Ruben Carcagno | MICE Collaboration VC
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Schedule
Test is expected to start
in November 2012
and last for approximately two monthsMay be delayed because of the cold mass vacuum leak repair at LBNLSeptember 12, 2012Ruben Carcagno | MICE Collaboration VC
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Summary
A new Solenoid Test Facility at Fermilab is being constructed at the repurposed Central Helium Liquefier, with the first test stand intended for MICE Coupling Coil Solenoids testing
Test Stand design is complete, fabrication and installation
is near completionDelivery of the first coupling coil cold mass to be tested to Fermilab has been delayed due to a cooling tube vacuum leak repair – delivery is expected in a few weeksTesting is expected to start in (late?) November 2012 and last for approximately two months
September 12, 2012
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