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U N C L A S S I F I E D
U N C L A S S I F I E D
Progress Report on the Dual-Use Cryostat
John C. Ramsey Los Alamos National Laboratory
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U N C L A S S I F I E D2
Dual-Use Cryostat Introduction
• Dress rehearsal for the nEDM upper cryostat
• Test-bed for various features
• Provides a home for R&D work for the He3 Injection system and the High Voltage system
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U N C L A S S I F I E D3
Vacuum Chamber Assembly Status
• Vacuum chamber test assembly in progress
• Pump-down and leak check this week or early next week
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U N C L A S S I F I E D4
Radiation Shield Assembly
• Split at two locations to facilitate assembly and modification inside the cryostat
• Top flanges also split
• 45° adapters can be installed after vacuum can
• All components have arrived
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U N C L A S S I F I E D5
High Voltage System Modifications
• High voltage insert design nearing completion
• System currently open and undergoing disassembly
• Completed design for 4K shield addition, off to shops early next week
• New cradle allows HV system to be easily moved and lifted into position under cryostat
• Adding cooling lines for shields and central volume
• Connections to the upper cryostat to be made from the bottom without disturbing the upper cryostat
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U N C L A S S I F I E D6
Cryostat Support Stand
• Simple support stand will arrive at LANL in a few weeks
• Makes use of small crane to overcome hook height problems in the building
• Auxiliary stands for the crane and atomic beam source forthcoming
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U N C L A S S I F I E D7
Coming Soon!
Completion of test assembly / pump-down / leak check
Modification of DR impedance
Assembly of cryostat on support platform
Commissioning and debugging runs
A little finger-crossing, some late nights, and some R&D!