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Title: FELIX: an experimental facility to study electromagnetic effects for first wall, blanket, and shield systems

Abstract

As part of the DOE First Wall/Blanket/Shield (FW/B/S) Engineering Test Program, Argonne National Laboratory (ANL) is carrying out an experimental program to study electromagnetic effects. Electromagnetic effect in a FW/B/S system include time delay of equilibrium field penetration to the plasma, forces and torques, eddy current heating, and electrical arcing. Such effects can arise in a fusion reactor from plasma disruption and normal and abnormal charge and discharge of the magnets. The facility will consist primarily of a solenoid magnet, a surrounding pulsed dipole magnet, and associated power supplies and support structure.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne Natl Lab, IL, USA
OSTI Identifier:
6482096
Report Number(s):
CONF-811040-
Journal ID: CODEN: PSERD; TRN: 83-007899
Resource Type:
Conference
Resource Relation:
Journal Name: Proc. Symp. Eng. Probl. Fusion Res.; (United States); Conference: 9. symposium on engineering problems of fusion research, Chicago, IL, USA, 26 Oct 1981
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BREEDING BLANKETS; ELECTROMAGNETIC RADIATION; TEST FACILITIES; FIRST WALL; SHIELDS; DESIGN; MAGNET COILS; POWER SUPPLIES; SUPPORTS; ELECTRIC COILS; ELECTRICAL EQUIPMENT; ELECTRONIC EQUIPMENT; EQUIPMENT; MECHANICAL STRUCTURES; RADIATIONS; REACTOR COMPONENTS; THERMONUCLEAR REACTOR WALLS; 700201* - Fusion Power Plant Technology- Blanket Engineering

Citation Formats

Praeg, W.F., Turner, L.R., Biggs, J., Bywater, J., Fuja, R., Knott, M., Lari, R.J., McGhee, D.G., and Wehrle, R.B.. FELIX: an experimental facility to study electromagnetic effects for first wall, blanket, and shield systems. United States: N. p., 1981. Web.
Praeg, W.F., Turner, L.R., Biggs, J., Bywater, J., Fuja, R., Knott, M., Lari, R.J., McGhee, D.G., & Wehrle, R.B.. FELIX: an experimental facility to study electromagnetic effects for first wall, blanket, and shield systems. United States.
Praeg, W.F., Turner, L.R., Biggs, J., Bywater, J., Fuja, R., Knott, M., Lari, R.J., McGhee, D.G., and Wehrle, R.B.. 1981. "FELIX: an experimental facility to study electromagnetic effects for first wall, blanket, and shield systems". United States. doi:.
@article{osti_6482096,
title = {FELIX: an experimental facility to study electromagnetic effects for first wall, blanket, and shield systems},
author = {Praeg, W.F. and Turner, L.R. and Biggs, J. and Bywater, J. and Fuja, R. and Knott, M. and Lari, R.J. and McGhee, D.G. and Wehrle, R.B.},
abstractNote = {As part of the DOE First Wall/Blanket/Shield (FW/B/S) Engineering Test Program, Argonne National Laboratory (ANL) is carrying out an experimental program to study electromagnetic effects. Electromagnetic effect in a FW/B/S system include time delay of equilibrium field penetration to the plasma, forces and torques, eddy current heating, and electrical arcing. Such effects can arise in a fusion reactor from plasma disruption and normal and abnormal charge and discharge of the magnets. The facility will consist primarily of a solenoid magnet, a surrounding pulsed dipole magnet, and associated power supplies and support structure.},
doi = {},
journal = {Proc. Symp. Eng. Probl. Fusion Res.; (United States)},
number = ,
volume = ,
place = {United States},
year = 1981,
month = 1
}

Conference:
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  • An experimental test facility for the study of electromagnetic effects in the FWBS systems of fusion reactors has been constructed over the past 1-1/2 years at Argonne National Laboratory (ANL). In a test volume of 0.76 m/sup 3/ a vertical pulsed 0.5 T dipole field (B < 50 T/s) is perpendicular to a 1 T solenoid field. Power supplies of 2.75 MW and 5.5 MW and a solid state switch rated 13 kV, 13.1 kA (170 MW) control the pulsed magnetic fields. The total stored energy in the coils is 2.13 MJ. The coils are designed for a future upgrademore » to 4 T or the solenoid and 1 T for the dipole field (a total of 23.7 MJ). This paper describes the design and construction features of the facility. These include the power supplies, the solid state switches, winding and impregnation of large dipole saddle coils, control of the magnetic forces, computer control of FELIX and of experimental data acquisition and analysis, and an initial experimental test setup to analyze the eddy current distribution in a flat disk.« less
  • Four electromagnetic effects experienced by the first wall and blanket of a tokamak reactor are considered. First, the first wall provides reduction of the growth rate of vertical axisymmetric instability and stabilization of low mode number interval kink modes. Second, if a rapid plasma disruption occurs, a current will be induced on the first wall, tending to maintain the field formerly produced by the plasma. Third, correction of plasma movement can begin on a time scale much faster than the L/R time of the first wall and blanket. Fourth, field changes, especially those from plasma disruption or from rapid dischargemore » of a toroidal field coil, can cause substantial eddy current forces on elements of the first wall and blanket. These effects are considered specifically for the first wall and blanket of the STARFIRE commercial reactor design study.« less
  • In fusion reactors, the blanket design and its characteristics have a major impact on the reactor performance, size, and economics. The selection and arrangement of the blanket materials, dimensions of the different blanket zones, and different requirements of the selected materials for a satisfactory performance are the main parameters, which define the blanket performance. These parameters translate to a large number of variables and design constraints, which need to be simultaneously considered in the blanket design process. This represents a major design challenge because of the lack of a comprehensive design tool capable of considering all these variables to definemore » the optimum blanket design and satisfying all the design constraints for the adopted figure of merit and the blanket design criteria. The blanket design capabilities of the First Wall/Blanket/Shield Design and Optimization System (BSDOS) have been developed to overcome this difficulty and to provide the state-of-the-art research and design tool for performing blanket design analyses. This paper describes some of the BSDOS capabilities and demonstrates its use. In addition, the use of the optimization capability of the BSDOS can result in a significant blanket performance enhancement and cost saving for the reactor design under consideration. In this paper, examples are presented, which utilize an earlier version of the ITER solid breeder blanket design and a high power density self-cooled lithium blanket design for demonstrating some of the BSDOS blanket design capabilities.« less
  • In predicting the electromagnetic consequences of a plasma disruption in a tokamak reactor design, a two-dimensional electromagnetic model of the first wall, blanket, and shield (FWBS) system is typically used. The response to a decaying plasma current is then found to be dominated by a single eddy-current mode, with a single L/R time. Recent experiments with the Fusion ELectromagnetic Induction eXperiment (FELIX) facility at Argonne National Laboratory suggest that such modeling can be used to design against electromagnetic forces and torques, but only if a range of values is used for both tau, the plasma decay time, and tau/sub 0/,more » the L/R time of the FWBS system.« less
  • Recent experiments with the FELIX (Fusion Electromagnetic Induction eXperiment) facility at Argonne National Laboratory (ANL) suggest that the expected electromagnetic forces and torques in a tokamak first wall, blanket, and shield (FWBS) system can be modelled by a single eddy current mode, with a simple characterization.