Microwave interferometer using 94-GHz solid-state sources
A 94-GHz microwave interferometer has been designed for the Tandem Mirror Experiment Upgrade and the Mirror Fusion Test Facility to replace the 140-GHz system. The new system is smaller and has modular single-channel units designed for high reliability. It is magnetically shielded and can be mounted close to the machine, which allows the use of lower power solid-state sources. Test results of the 94-GHz prototype indicate that the phase resolution is better than 1/sup 0/, the Impatt FM noise is 5 MHz wide, and the Gunn FM noise is 6 kHz wide. This paper presents the antenna designs along with the test results and discusses the unique problems associated with diagnosing a high electron temperature plasma in the presence of electron cyclotron resonant heating.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5508400
- Report Number(s):
- UCRL-89244; CONF-831203-29; ON: DE84003741
- Resource Relation:
- Conference: 10. symposium on fusion engineering, Philadelphia, PA, USA, 5 Dec 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
INTERFEROMETERS
DESIGN
MFTF DEVICES
PLASMA DIAGNOSTICS
TMX DEVICES
MAGNETIC SHIELDING
MICROWAVE RADIATION
PERFORMANCE TESTING
ELECTROMAGNETIC RADIATION
MAGNETIC MIRRORS
MEASURING INSTRUMENTS
OPEN PLASMA DEVICES
RADIATIONS
SHIELDING
TANDEM MIRRORS
TESTING
THERMONUCLEAR DEVICES
700102* - Fusion Energy- Plasma Research- Diagnostics