High resolution electron cyclotron emission temperature profile and fluctuation diagnostic for Alcator C-Mod
- Physics Department, Auburn University, Alabama 36849 (United States)
- Fusion Research Center, University of Texas, Austin, Texas 78712 (United States)
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
- Electrical Engineering Department, University of California at Davis, California (United States)
A new second harmonic heterodyne electron cyclotron emission system with high spatial resolution ({le}15thinspmm) and a large number of channels (32) for dense profile coverage will be installed on Alcator C-Mod. The system will provide detailed radial electron temperature profiles and core temperature fluctuation measurements. The collection system is composed of elliptical and parabolic mirrors coupled to two overmoded waveguides to provide high poloidal spatial resolution necessary for {tilde T}{sub e} measurements. Four radiometer sections cover the frequency range of 234{endash}306 GHz, coupled to four optimized intermediate frequency modules with eight channels of detectors, amplifiers, dividers, and filters providing the profile information. A separate filter arrangement allows for temperature fluctuation measurements utilizing correlation techniques. {copyright} {ital 1999 American Institute of Physics.}
- OSTI ID:
- 295672
- Report Number(s):
- CONF-980605-; ISSN 0034-6748; TRN: 99:001858
- Journal Information:
- Review of Scientific Instruments, Vol. 70, Issue 1; Conference: 12. topical conference on high-temperature plasma diagnostics, Princeton, NJ (United States), 7-11 Jun 1998; Other Information: PBD: Jan 1999
- Country of Publication:
- United States
- Language:
- English
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