# Computation of three-dimensional tokamak and spherical torus equilibria

## Abstract

A nominally axisymmetric plasma configuration, such as a tokamak or a spherical torus, is highly sensitive to nonaxisymmetric magnetic perturbations due to currents outside of the plasma. The high sensitivity means that the primary interest is in the response of the plasma to very small perturbations, i.e., vertical bar b-vector/B-vector vertical bar {approx_equal}10{sup -2} to 10{sup -4}, which can be calculated using the theory of perturbed equilibria. The ideal perturbed equilibrium code (IPEC) is described and applied to the study of the plasma response in a spherical torus to such external perturbations.

- Authors:

- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
- (United States)

- Publication Date:

- OSTI Identifier:
- 20974970

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 5; Other Information: DOI: 10.1063/1.2732170; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AXIAL SYMMETRY; CALCULATION METHODS; CURRENTS; DISTURBANCES; EQUILIBRIUM; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA CONFINEMENT; PLASMA SIMULATION; SPHERICAL CONFIGURATION; THREE-DIMENSIONAL CALCULATIONS; TOKAMAK DEVICES

### Citation Formats

```
Park, Jong-kyu, Boozer, Allen H., Glasser, Alan H., Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, and Los Alamos National Laboratory, Los Alamos, New Mexico 87545.
```*Computation of three-dimensional tokamak and spherical torus equilibria*. United States: N. p., 2007.
Web. doi:10.1063/1.2732170.

```
Park, Jong-kyu, Boozer, Allen H., Glasser, Alan H., Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, & Los Alamos National Laboratory, Los Alamos, New Mexico 87545.
```*Computation of three-dimensional tokamak and spherical torus equilibria*. United States. doi:10.1063/1.2732170.

```
Park, Jong-kyu, Boozer, Allen H., Glasser, Alan H., Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, and Los Alamos National Laboratory, Los Alamos, New Mexico 87545. Tue .
"Computation of three-dimensional tokamak and spherical torus equilibria". United States.
doi:10.1063/1.2732170.
```

```
@article{osti_20974970,
```

title = {Computation of three-dimensional tokamak and spherical torus equilibria},

author = {Park, Jong-kyu and Boozer, Allen H. and Glasser, Alan H. and Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 and Los Alamos National Laboratory, Los Alamos, New Mexico 87545},

abstractNote = {A nominally axisymmetric plasma configuration, such as a tokamak or a spherical torus, is highly sensitive to nonaxisymmetric magnetic perturbations due to currents outside of the plasma. The high sensitivity means that the primary interest is in the response of the plasma to very small perturbations, i.e., vertical bar b-vector/B-vector vertical bar {approx_equal}10{sup -2} to 10{sup -4}, which can be calculated using the theory of perturbed equilibria. The ideal perturbed equilibrium code (IPEC) is described and applied to the study of the plasma response in a spherical torus to such external perturbations.},

doi = {10.1063/1.2732170},

journal = {Physics of Plasmas},

number = 5,

volume = 14,

place = {United States},

year = {Tue May 15 00:00:00 EDT 2007},

month = {Tue May 15 00:00:00 EDT 2007}

}

DOI: 10.1063/1.2732170

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