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Eric Palm – Director DC Field User Program Scott Hannahs – Director DC Field Instrumentation

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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Eric Palm – Director DC Field User Program Scott Hannahs – Director DC Field Instrumentation

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  1. Eric Palm – Director DC Field User Program Scott Hannahs – Director DC Field Instrumentation

  2. 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

  3. 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

  4. 45 T Hybrid Magnet11.5 T Superconducting Outsert

  5. 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

  6. 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…

  7. 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

  8. Control Room Operators Hybrid / Cryogenic Operators

  9. Machine Shop Electronics Shop

  10. Scientists

  11. Process • Magnet time through online proposals • 2 parts • Project – describes science does not get repeated • Experiment – describes measurement Duplicate for each requested week • Very Important to have prior results! • Reviewed and ranked by panel of in-house experts • 3 calls for proposals per year • Next due date July 10

  12. 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

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