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Title: A pulsed magnetic field test facility for conductors and joints

Abstract

The International Thermonuclear Experimental Reactor (ITER) and, in the US, the Tokamak Physics Experiment (TPX) fusion programs both require conductor and joint testing in a pulsed magnetic background field in order to demonstrate that these components can operate successfully in a simulated, fusion-machine environment. Here, a pulsed magnetic field test facility is under construction at Massachusetts Institute of Technology for testing large scale cable-in-conduit superconductor and joint samples. Separate, demountable split-pair solenoid and saddle coils provide a combination of fields which can be either transverse of parallel to the sample axis. The solenoid and saddle magnets together can provide transverse peak fields as high as 8.4 T. Peak parallel fields of 6.6 T can be generated with the solenoid alone. Ramp-up rates of 1.5 T/s and ramp-down rates of 20 T/s are possible. Sample currents up to 50 kA are provided by a superconducting current transformer. The sample is connected to the transformer secondary through a pair of low resistance joints. Supercritical helium is provided to the sample at flow rates up to 20 g/s, pressures up to 1 MPa, and temperatures from 4.7 to 10 K. Programmable logic controllers provide coordination of the magnetic field, sample current, and heliummore » flow rate and temperature in the sample. Sample and facility instrumentation signals are processed and data is stored on a workstation-based data acquisition system with comprehensive data reduction capability. Facility details and status are described.« less

Authors:
; ;  [1]
  1. Massachusetts Inst. of Tech., Cambridge, MA (United States); and others
Publication Date:
OSTI Identifier:
282492
Report Number(s):
CONF-950691-
Journal ID: IEMGAQ; ISSN 0018-9464; TRN: IM9638%%290
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics
Additional Journal Information:
Journal Volume: 32; Journal Issue: 4Pt1; Conference: 14. international conference on magnet technology, Tampere (Finland), 11-16 Jun 1995; Other Information: PBD: Jul 1996
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; SUPERCONDUCTING CABLES; TEST FACILITIES; ITER TOKAMAK; SUPERCONDUCTING MAGNETS; TPX DEVICE; JOINTS; ELECTRIC CONDUCTORS; ELECTRIC CURRENTS

Citation Formats

Smith, B A, Minervini, J V, and Camille, Jr, R J. A pulsed magnetic field test facility for conductors and joints. United States: N. p., 1996. Web. doi:10.1109/20.508624.
Smith, B A, Minervini, J V, & Camille, Jr, R J. A pulsed magnetic field test facility for conductors and joints. United States. https://doi.org/10.1109/20.508624
Smith, B A, Minervini, J V, and Camille, Jr, R J. 1996. "A pulsed magnetic field test facility for conductors and joints". United States. https://doi.org/10.1109/20.508624.
@article{osti_282492,
title = {A pulsed magnetic field test facility for conductors and joints},
author = {Smith, B A and Minervini, J V and Camille, Jr, R J},
abstractNote = {The International Thermonuclear Experimental Reactor (ITER) and, in the US, the Tokamak Physics Experiment (TPX) fusion programs both require conductor and joint testing in a pulsed magnetic background field in order to demonstrate that these components can operate successfully in a simulated, fusion-machine environment. Here, a pulsed magnetic field test facility is under construction at Massachusetts Institute of Technology for testing large scale cable-in-conduit superconductor and joint samples. Separate, demountable split-pair solenoid and saddle coils provide a combination of fields which can be either transverse of parallel to the sample axis. The solenoid and saddle magnets together can provide transverse peak fields as high as 8.4 T. Peak parallel fields of 6.6 T can be generated with the solenoid alone. Ramp-up rates of 1.5 T/s and ramp-down rates of 20 T/s are possible. Sample currents up to 50 kA are provided by a superconducting current transformer. The sample is connected to the transformer secondary through a pair of low resistance joints. Supercritical helium is provided to the sample at flow rates up to 20 g/s, pressures up to 1 MPa, and temperatures from 4.7 to 10 K. Programmable logic controllers provide coordination of the magnetic field, sample current, and helium flow rate and temperature in the sample. Sample and facility instrumentation signals are processed and data is stored on a workstation-based data acquisition system with comprehensive data reduction capability. Facility details and status are described.},
doi = {10.1109/20.508624},
url = {https://www.osti.gov/biblio/282492}, journal = {IEEE Transactions on Magnetics},
number = 4Pt1,
volume = 32,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 1996},
month = {Mon Jul 01 00:00:00 EDT 1996}
}