Completion of the US NHMFL 60 T quasi-continuous magnet
- National High Magnetic Field Lab., Tallahassee, FL (United States)
- National High Magnetic Field Laboratory, Tallahassee, FL (United States)
This is a technical summary report of the 60 T controlled power research magnet that was designed, assembled, installed and recently commissioned at the National High Magnetic Field Laboratory (NHMFL) Pulsed Field Facility at Los Alamos National Laboratory. The magnet is a innovative in its design, construction, size, operation and power supply. The magnet consists of nine nested, mechanically independent, free standing coils, each of which is enclosed by a steel reinforcing shell. Using inertial energy storage a synchronous motor-generator provides ac power to a set of five ac-dc converters rated at 64 MW/87.6 MVA each. These converters energize three independent coil circuits to create 90 MJ of field energy at the maximum field of 60 T, which can be sustained for 100 ms in the 32 mm bore. Prior to a pulse the 4-ton magnet is cooled to liquid nitrogen temperature, a procedure that is achieved in less than one hour by the free flow of nitrogen between the nine coils. In addition to being the most powerful of its class in the world the magnet is also the first of its kind in the US. The operation of the magnet will be described along with special features of its design and construction. A sampling of the pulse shapes that can be obtained for research will be shown.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 292861
- Report Number(s):
- LA-UR-97-4216; CONF-9710127-; ON: DE98002652; TRN: AHC2DT08%%42
- Resource Relation:
- Conference: 15. international conference on magnet technology, Beijing (China), 20-24 Oct 1997; Other Information: PBD: Oct 1997
- Country of Publication:
- United States
- Language:
- English
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