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Introduction to the MagLab DC Field Facility . Eric Palm – Director DC Field User Program Scott Hannahs – Director DC Field Instrumentation. Superconducting Magnets. SCM-1 18/20 T Top-loading dil frig 20mK – 1K SCM-2 18/20 T Top-loading He-3 or Top-loading VTI 0.3K – 300K
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Introduction to the MagLab DC Field Facility Eric Palm – Director DC Field User Program Scott Hannahs – Director DC Field Instrumentation
Superconducting Magnets • SCM-1 18/20 T Top-loading dil frig 20mK – 1K • SCM-2 18/20 T Top-loading He-3 orTop-loading VTI 0.3K – 300K • SCM-3 17.5 T Optical access magnetUnique access through magnet 24 Hr / day, 7 day / week operation
Resistive Magnets Water Cooled – 2000 Gallons / min High Power – 20 MW ~40KA, 500V • 32 mm bore: 1 - 35 T, 1 - 33T • 50 mm bore: 2 - 31 T Modulation or gradient coil inserts • 195 mm bore: 20T • High homogeneity: 25 T 50mm bore • Med homogeneity: 29T 32mm bore • Coming soon: Split bore optical access 7-10.5 hours / shift, 4.5 shifts / week
33.5 T Resistive Insert 74 kA 33 MW 45T Largest DC Magnetic Field in the World 8 hour shifts, 4.5 shifts / week MUST have prior data at lower fields Very competitive
Measurements • Transport – resistivity, hall resistance, etc. • Magnetization – susceptibility, cantilever magnetometry • Heat Capacity • Thermal Dilation / Magnetostriction • Ultrasound / resonant ultrasound • High pressure – piston, diamond anvil cells, helium intensifier • NMR • Microwaves • Fourier Transform Infrared Measurements • Optics – spectroscopy, ultra fast…
People • Scott Hannahs – Director DC Field Instrumentation • Alice Hobbs – DC Field Coordinator • Tim Murphy – Mr CryogenicsLeads DC Field Technicians JonathanBillings Glover Jones Scott Maier Bobby Pullum
Control Room Operators Bryon Dalton Michael George Larry Gordon Joel Piotroski Angel San Martin Hybrid / Cryogenic Operators Tim DeGraff JohnPucci Bob Carrier Dan Freeman
Machine Shop Vaughan Williams Andy Rubes Robert Schwartz James Maddox Dan McIntosh John Farrel Electronics Shop AndyPowell Lee Boninghausen Russell Wood
Scientists Luis Balicas Eun Sang Choi Lloyd Engel JanJaroszynski PhilKuhns Steve McGill Ju-HyunPark Dragana Popovic ArneilReyes StanTozer DmitrySmirnov AlexeySuslov HaidongZhou
Process • Magnet time through online proposals • 2 parts • Project – describes science does not get repeated – reviewed by external scientists • Experiment – describes measurement Duplicate for each requested week Reviewed and ranked by panel of in-house scientists • 3 calls for proposals per year • Next due date Mid July
Energy Budget • Users given an energy / MWHr budget • Enough to run 31 hours – given 41 hours in the cell • Should run out of energy before you run out of time! • 1 MWHr roughly $120 • $24,000 to $70,000 for a week of time JUST FOR ELECTRICITY • Please use magnet time wisely • Power ~ B2