DC Field Facilities 2013 and beyond Scott Hannahs NHMFL External Advisory Committee August 2010

Milli-Kelvin 18/20 T SC 50 mm 20 mK 16/18 T SC 50 mm 10 mK 18/20 T SC 50 mm 300K-.3K Cell 4 20T 195 mm 20kA Test 20 MW Cell 6 25 T (700 GHz) 50 mm 12 ppm 18.6 MW Cell 8 35 T 32 mm 19 MW Cell 10 Cryogenic System Storage Cell T 32 mm 19 MW Keck Cell 16 LCTF Cell T Hybrid 32 mm 31 MW Cell 13 Magnet & Power Supply Testing Cell 9 31 T 50 mm 18 MW Cell 3 18 T SC w/ Fast Optics Cell 1 Optics Support DC Magnets Cell 5 Split Coil > 25 T 32 mm 28MW Cell 14 SCH / 36 T 40 mm 1 ppm 14 MW 40T “High Field” insert 32 mm 40+T 32 mm 28 MW 40+T 32 mm 28 MW 36+T 50 mm 28 MW 36+T 50 mm 28 MW 60T Hybrid 32 mm ?? MW 30T SC 50 mm 10 mK 30T SC 50 mm 300K-.3K Cell 2 29 T 32 mm 50 ppm 18.3 MW Cell 7 31 T 50 mm Gradient & Modulation 18 MW Cell 11 Cryo Operators Outsert Repair Upgrade 2PS Green identifies current status (2010) Yellow identifies status at end of current grant (2012) Red identifies future possibilities Light Blue identifies cells that may be available NHMFL External Advisory Committee August 2010

Field and NHMFL NHMFL External Advisory Committee August 2010

DC Powered Magnets Worldwide GrenobleTallahasseeNijmegenTsukubaSendai Power 1 (MW) cm high-field (T) cm high-field (T) Large-Bore 19 tesla, 16 cm 20 tesla, 20 cm 3-cm Hybrid (T) cm Hybrid (T) ppm Hybrid (T) cm, 10-ppm (T) 25 3-cm, 50-ppm (T) 28 Split 18T, 4 x 4 mm 25+ tesla 4 x (45° x 11.4°) 1 Power available for resistive magnets listed 2 Magnet presently in development Highest Worldwide NHMFL External Advisory Committee August 2010

Field vs Outer Diameter and Power for 32 mm bore resistive magnets NHMFL External Advisory Committee August 2010

Operations Building Alongside OPMD Even Cells 3 Floors ~13000 SqFt Frees Up Cells 10 and 11 Pits for mK magnets, low vibration area for low temperature STM NHMFL External Advisory Committee August 2010

Vision for the DC Field User Program as of summer 2010, mid-point in current award period All “workhorse” resistive magnets upgraded to 28 MW {2.8M$ first, 6.4M$ for 4} T (32 mm bore) 36-38T (50 mm bore) Series Connected Hybrid (14 MW) – 36T high homogeneity insert {11.7 M$} 40T high field insert for Series Connected Hybrid {1 M$} Power supply active filter upgrade 28→32MW to replace unobtainable components and reduce ripple, Magnet Cooling pump & heat exchanger for 28/32 MW operation {2.3 M$} Plant infrastructure upgrade/replacements, Chillers (due freon) {$5M} Superconducting magnet operational at 32T with 10 mK dilution refrigerator, other SC magnets being made or purchased. {5 M$ ?} Hybrid magnet outsert being upgraded to 15 T giving 48 T total field {2 M$ ?}, 2 Power Supply Operation Proposal for 60 T hybrid being developed {100 M$} New “standard” instrumentation heat capacity, dilatometry, scanning probe microscopy {1 person / technique} Standard instrumentation on “PPMS like” pucks allowing remote operation and measurements, these could be run in a 3 rd shift. {1 technician + 1 control room operator} New “Operations Building” adjacent to OPMD with low vibration area for low temp STM and magnet, pits for mK magnets, equipment and cryo storage, lab space, offices, cryo operators, and bathroom {$6M ??}