Transient Internal Probe Diagnostic
Abstract
The Transient Internal Probe (TIP) diagnostic is a novel method for probing the interior of hot magnetic fusion plasmas that are inaccessible with ordinary stationary probes, by limiting the time that the probe is in the plasma, and by encasing the probe in a diamond cladding. In the TIP scheme, a probe is fired through a hot plasma at velocities in excess of 2.5 km/s, and makes direct, local measurements of the internal magnetic field structure. These measurements are relayed to the laboratory optical detection system, using an incident laser that is retroreflected through a Faraday rotator crystal payload that acts as a magneto-optic sensor. The individual tasks associated with the TIP development, construction a two-stage light gas gun, optical detection system and probe projectile, are currently being completed. Integration of these tasks is currently underway. It is expected that the integrated system will be functional in the first six months of 1992. A diamond ablation study has also been performed to measure the ablative effects of a hot plasma in contact with a diamond pellet. Studies are currently underway to develop a sabot stripping system, and to develop a vacuum interface between the TIP diagnostic and the plasma experiments' vacuum chamber.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 1991
- Accession Number
- ADA247306
Entities
People
- Bradford L. Wright
- Glen A. Wurden
- Gregory G. Spanjers
- Thomas R. Jarboe
- Walter H. Christiansen
Organizations
- University of Washington