Electron-beam measurements of the magnetic surfaces in the Proto-Cleo torsatron
Abstract
The shape of the vacuum magnetic surfaces at a fixed toroidal angle in the Proto-Cleo torsatron was investigated by launching a beam of electrons along various magnetic-field lines. After completing a variable number of transits around the major axis, the beam was intercepted by a probe. The locations of the interception points for different numbers of toroidal transits trace out the minor cross section of the magnetic surfaces. A family of three experimentally measured magnetic surface cross sections are compared with computer magnetic surface cross sections. From interception-point location and corresponding time of flight data, the average rotational transform for each surface is calculated.
- Publication:
-
IEEE Transactions on Plasma Science
- Pub Date:
- June 1979
- DOI:
- 10.1109/TPS.1979.4317201
- Bibcode:
- 1979ITPS....7...94F
- Keywords:
-
- Electron Beams;
- Magnetic Field Configurations;
- Magnetic Measurement;
- Plasmatrons;
- Toroidal Plasmas;
- Electron Energy;
- Electron Guns;
- Electron Probes;
- Electron Trajectories;
- Gas Pressure;
- Particle Motion;
- Stellarators;
- Test Equipment;
- Plasma Physics