Transport simulation of the effect of impurity radiation on the high beta, ohmic start-up of the HBT-EP tokamak
Abstract
The effect is given of impurity radiation on the attainment of high beta and high temperature for an ohmic discharge in the case of a tokamak like (High Beta Tokamak) HBT-EP. Time dependent, one dimensional transport calculations were done using the HERMES code. The permissible impurity influx from the wall was found to decrease with increase in the magnetic field. For attaining a plasma temperature around 100 eV with the value of (beta) close to the Troyon (beta) limit, the maximum magnetic field was found to be around 0.6 Tesla with a maximum permissible impurity influx of about 0.2 percent of the hydrogen ion flux reaching the wall.
- Publication:
-
Unknown
- Pub Date:
- 1990
- Bibcode:
- 1990tsei.rept.....V
- Keywords:
-
- Impurities;
- Magnetic Fields;
- Plasma Heating;
- Radiation Effects;
- Tokamak Devices;
- Transport Theory;
- Beta Factor;
- Boundary Conditions;
- Computerized Simulation;
- Maxwell Equation;
- Ohmic Dissipation;
- Pollution Transport;
- Plasma Physics