First 100 T non-destructive magnet outer coil set

Abstract

Abstract-The controlled power outer coil set of the first 100 T non-destructive (100 T ND) magnet is described. This magnet will be installed as part of the user facility research equipment at the National High Magnetic Field laboratory (NHMFL) Pulsed Field Facility at Los Alamos National Laboratory. The 100 T ND controlled power outer coil set consists of seven nested, mechanically independent externally reinforced coils. These coils, in combination, will produce a 47 T platform field in a 225-mm diameter bore. Using inertial energy storage a synchronous motor/generator provides ac power to a set of seven ac-dc converters rated at 64 MW/80 MVA each. These converters energize three independent coil circuits to create 170 MJ of field energy in the outer coil set at the platform field of 47 T. Each coil consists of a multi-layer winding of high strength conductor supported by an external high strength stainless steel shell. Coils with the highest magnetic loads will utilize a reinforcing shell fabricated from highly cold worked 301 stainless steel strip. The autofrettage conditioning method will be used to pre-stress the coils and thereby limit conductor and reinforcement strains to the elastic range. The purpose of pre-stressing the coils is to attain a design life of 10,000 full field pulses. The operation and conditioning of the coil set will be described along with special features of its design, magnetic and structural analyses and construction.Index Terms-high field, pulsed magnet, 100 tesla

Progress of the insert coil for the US-NHMFL multi-shot pulse magnet

“…Each layer's outer reinforcement is comprised by the following: (1) A 0:5 mm thick zylon & S2 glass composite insulating layer manufactured using the wet lay-up process. (2) Multiple layers of rolled MP35N sheet, and (3) An outer layer of high-tension zylon fiber composite. The MP35N is present to react axial and radial loads.…”

“…The magnet consists of an outer coil set, which will produce a background at peak-field of 44 T; and an insert coil to reach field. A capacitor bank drives the insert coil [1,2].…”

First 100 T non-destructive magnet

“…This will be done to increase the voltage capability between magnet electrical sections. Additional information on the outer coil set, the materials to be used in its construction and the magnet busbar system may be found in other papers to be presented at this conference [9], [11].…”