Development of a Transient Internal Probe Diagnostic.
Abstract
A research effort was carried out to develop and test key components of the transient internal probe, a diagnostic tool for measuring internal magnetic fields in a plasma. A gasdynamic sabot separation method was developed for discarding the sabot upstream of the plasma. Separation is effected in a vented 50-caliber gun barrel, and the sabot is deflected upstream of the plasma, reliably removing the sabot without disrupting the probe trajectory. A vacuum interface was constructed to isolate the plasma from gun gases, which uses a very fast trap-door valve to prevent gas from entering the plasma chamber. A full-up test of the diagnostic was made using a 2.2 km/sec probe to measure a static field in a vacuum. This yielded excellent agreement with Hall probe measurements, with a resolution of 20 Gauss, and the gun gas entering the measurement chamber is to be acceptably small for application to plasma devices. (AN)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 16, 1994
- Accession Number
- ADA292470
Entities
People
- Arthur T. Mattick
- Thomas R. Jarboe
Organizations
- University of Washington