sPHENIX Director’s Review
In this review, the Superconducting Magnet Division (SMD) at BNL oversaw the preparation, shipment, and installation of a superconducting magnet. Key personnel and detailed processes involved in the project are highlighted. The focus was on ensuring the safe transport and successful commissioning of the magnet, involving various technical aspects such as valve box extension, restraints, and testing.
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Presentation Transcript
sPHENIX Directors Review SC-Magnet Transport/Assembly/Commissioning M. Anerella August 3, 2017 Superconducting Magnet Division (SMD) - BNL 1 sPHENIX Director's Review Aug 2-4, 2017
Scope Prepare magnet for shipment Oversee shipment from Building 912 to Building 1008 Reinstall & test valve box 2 sPHENIX Director's Review Aug 2-4, 2017
Background SMD has to date: traveled to SLAC to inspect the magnet prior to shipment to BNL, designed restraints which were installed prior to shipment & removed after delivery Specified air ride tractor and trailer for safe shipment (magnet transport frame has no shock absorbing features) Coordinated the low power cold test at BNL Designed, fabricated and installed the valve box extension Disassembled the valve box after the high power cold test 3 sPHENIX Director's Review Aug 2-4, 2017
Key SMD Personnel Superconducting Magnet Division Organizational Chart Mike Anerella chief mechanical engineer; mechanical oversight Dr. Kathleen Amm Division Head Henry Hocker - QA Manager Piyush Joshi chief electrical engineer; electrical & magnet testing support Ray Ceruti lead mechanical technician Sebastian (Sonny) Dimaiuta lead electrical technician Domenick Milidantri, Drew Carleton mechanical assembly Joe D Ambra - electrical assembly Joe Muratore magnet test scientist; magnet testing supervision Paul Kovach mechanical design engineer 4 sPHENIX Director's Review Aug 2-4, 2017
Shipping restraints & pre-assembly work; shipment from Bldg. 912 to Bldg. 1008 Install Heat Shield Shipping Restraints And Valve Box Lead Shipping Restraints, remove after shipping Close up view of internal valve box restraint of vapor cooled leads Close up view of heat shield axial restraint and restraint as installed in cryostat end plate Close up view of restraint of valve box exiting leads 5 sPHENIX Director's Review Aug 2-4, 2017
Valve box extension details magnet end Superconductor in extension valve box end valve box end Internal sc bus and helium line extensions ~ 2 m extension magnet end 6 sPHENIX Director's Review Aug 2-4, 2017
Analysis of valve box extension shipping load An ANSYS analysis was performed on the sPHENIX valve box extension structure to ensure that it can withstand reasonable shipping loads without any additional supports. The analysis was run at 3 G vertical loading with a 100 pound mass at the far end to account for the weight of any internal components. The attached results files show that all stresses are within the design allowables for 6061 T-6 aluminum alloy. sPHENIX asks for a shipping restraint anyway 7 sPHENIX Director's Review Aug 2-4, 2017
Transport/Assembly Detail Highlights Install & remove (heat shield, valve box) shipping restraints Tighten & loosen coil support tie rods (tighten for shipping, loosen prior to testing; allows for differential thermal contraction) Repair / installation / monitoring of coil position sensors Removal of valve box after High Power Test in Bldg. 912 (off Project) for shipment to Bldg. 1008, reinstallation after shipment to Bldg. 1008 300K, 4K Coil Electrical Testing: R, L and Q 400V Impulse test 520V Hypot Helium circuits (2) vacuum leak check Helium circuits (2) pressure test (81 psig - 6.6 bar) Cryostat vacuum leak check Coil position alignment (by readjusting tie rods by prescribed amounts) removed for transport 8 sPHENIX Director's Review Aug 2-4, 2017
Schedule Drivers none 9 sPHENIX Director's Review Aug 2-4, 2017
Cost elements Remaining Project costs Labor & material for temporary valve box extension shipping restraint labor to support shipment to Bldg. 1008 & reinstallation of valve box Material cost of air ride tractor & trailer (rental?) for delivery from 912 to 1008 10 sPHENIX Director's Review Aug 2-4, 2017
Status and Highlights Valve box has been removed from valve box extension after High Power Test (off-Project) Valve box extension shipping restraint not started (not needed for > 3 years) 11 sPHENIX Director's Review Aug 2-4, 2017
Summary, Concerns Valve box is removed and magnet is ready for shipment to 1008 In addition to drawings, future reassembly will be guided by photos and videos taken of disassembly Air ride tractor and trailer is essential for safe transport Valve box extension support will be designed, built and installed for added safety Removed parts must not be misplaced between now and transport 12 sPHENIX Director's Review Aug 2-4, 2017
Back Up 13 sPHENIX Director's Review Aug 2-4, 2017
Magnet Specs sc solenoid in shipping fixture BaBar* Superconducting solenoid specifications: *formerly at SLAC, modified at BNL for sPhenix Heavily stabilized ~ 300% margin 14 sPHENIX Director's Review Aug 2-4, 2017
