TFTR 60 GHz alpha particle collective Thomson scattering diagnostic
نویسندگان
چکیده
منابع مشابه
A 300 GHz collective scattering diagnostic for low temperature plasmas.
A compact and portable 300 GHz collective scattering diagnostic employing a homodyne detection scheme has been constructed and installed on the hot helicon experiment (HELIX). Verification of the homodyne detection scheme was accomplished with a rotating grooved aluminum wheel to Doppler shift the interaction beam. The HELIX chamber geometry and collection optics allow measurement of scattering...
متن کاملPFC / JA - 92 - 13 Performance Evaluation of the TFTR Gyrotron CTS Diagnostic for Alpha Particles
A large-angle, 60 GHz collective Thomson scattering (CTS) diagnostic system for localized measurements of DT alpha-particle velocity distribution and fraction is being implemented on TFTR. Calculations of expected CTS spectra, signal to noise ratio per receiver channel, and estimated error in determining the temperature and fraction of alpha-particles are being carried out. The experimental spe...
متن کاملNovel small-angle collective Thomson scattering system.
A Thomson scattering opticals system is described with the following characteristics: (1) it allows scattering angles down to 1 mrad before collection optics interfere with beam dumping; (2) it gives excellent k resolution for angles of > or approximately 1.5 mrad; (3) it collects light from a scattering volume which can be variably positioned without optical realignment; and (4) it is compact ...
متن کاملElevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements.
Localized measurements of the fast ion velocity distribution function and the plasma composition measurements are of significant interest for the fusion community. Collective Thomson scattering (CTS) diagnostics allow such measurements with spatial and temporal resolution. Localized measurements require a good alignment of the optical path in the transmission line. Monitoring the alignment duri...
متن کاملCommissioning activities and first results from the collective Thomson scattering diagnostic on ASDEX Upgrade (invited).
The collective Thomson scattering (CTS) diagnostic installed on ASDEX Upgrade uses millimeter waves generated by the newly installed 1 MW dual frequency gyrotron as probing radiation at 105 GHz. It measures backscattered radiation with a heterodyne receiver having 50 channels (between 100 and 110 GHz) to resolve the one-dimensional velocity distribution of the confined fast ions. The steerable ...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 1995
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1146323