NDLI: Installation and operation of the 400 kW 140 GHz gyrotron on the MTX experiment

Content Provider	IEEE Xplore Digital Library
Author	Ferguson, S.W. Felker, B. Jackson, M. Petersen, D. Sewall, N. Stever, R.
Copyright Year	1991
Description	Author affiliation: Lawrence Livermore Nat. Lab., CA, USA (Ferguson, S.W.; Felker, B.; Jackson, M.; Petersen, D.; Sewall, N.; Stever, R.)
Abstract	The authors describe the installation and operation of the 400 kW 140 GHz gyrotron used for plasma heating on the Microwave Tokamak Experiment (MTX). The gyrotron system comprises a high-voltage (80 kV) modulated power supply, a multistation CAMAC computer control, a 5 T superconducting magnet, a series of conventional copper magnets, a circulating fluorinert (FC75) window cooling system, a circulating oil cooling system, a water cooling system, and microwave frequency and power diagnostics. The microwave power measured at the MTX tokamak input is typically 200 kW for a gyrotron output of approximately 400 kW. Losses in the system arise from power in modes other than the desired TE 15,2 mode, transport losses in the Vlasov sidelobes, small waveguide losses to the Vlasov, and small losses in the quasi-optical beamline. Individual MTX shots with the gyrotron have shown a stored energy increase of 1 kJ in the plasma in high density plasmas, and central electron temperature increases of up to 800 eV have been obtained. Even larger temperature increases have been observed recently in low density plasmas.<>
Starting Page	138
Ending Page	144
File Size	544784
Page Count	7
File Format	PDF
ISBN	0780301323
DOI	10.1109/FUSION.1991.218932
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-09-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gyrotrons Plasma temperature Cooling Plasma density Electromagnetic heating Tokamaks Plasma transport processes Plasma waves Magnetic modulators Power supplies
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Installation and operation of the 400 kW 140 GHz gyrotron on the MTX experiment

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