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Title: High Harmonic Fast Wave Heating Experiments on NSTX

Abstract

A radio frequency (rf) system has been installed on the National Spherical Torus Experiment (NSTX) with the aim of heating the plasma and driving plasma current. The system consists of six rf transmitters, a twelve element antenna and associated transmission line components to distribute and couple the power from the transmitters to the antenna elements in a fashion to allow control of the antenna toroidal wavenumber spectrum. To date, power levels up to 3.85 MW have been applied to the NSTX plasmas. The frequency and spectrum of the rf waves has been selected to heat electrons via Landau damping and transit time magnetic pumping. The electron temperature has been observed to increase from 400 to 900 eV with little change in plasma density resulting in a plasma stored energy of 59 kJ and a toroidal beta, bT , =10% and bn = 2.7.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
768660
Report Number(s):
PPPL-3516
TRN: US0005784
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Conference
Resource Relation:
Conference: 18th International Atomic Energy Agency's (IAEA) Fusion Energy Conference (FEC-2000), Sorrento (IT), 10/04/2000--10/10/2000; Other Information: PBD: 16 Nov 2000
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 29 ENERGY PLANNING, POLICY AND ECONOMY; ELECTRON TEMPERATURE; HARMONICS; HEATING; IAEA; LANDAU DAMPING; NUCLEAR ENERGY; PLASMA DENSITY; POWER TRANSMISSION LINES; THERMONUCLEAR REACTORS; TRANSIT-TIME MAGNETIC PUMPING

Citation Formats

J.R. Wilson, R. Bell, M. Bitter, P. Bonoli, and et al. High Harmonic Fast Wave Heating Experiments on NSTX. United States: N. p., 2000. Web.
J.R. Wilson, R. Bell, M. Bitter, P. Bonoli, & et al. High Harmonic Fast Wave Heating Experiments on NSTX. United States.
J.R. Wilson, R. Bell, M. Bitter, P. Bonoli, and et al. Thu . "High Harmonic Fast Wave Heating Experiments on NSTX". United States. doi:. https://www.osti.gov/servlets/purl/768660.
@article{osti_768660,
title = {High Harmonic Fast Wave Heating Experiments on NSTX},
author = {J.R. Wilson and R. Bell and M. Bitter and P. Bonoli and et al},
abstractNote = {A radio frequency (rf) system has been installed on the National Spherical Torus Experiment (NSTX) with the aim of heating the plasma and driving plasma current. The system consists of six rf transmitters, a twelve element antenna and associated transmission line components to distribute and couple the power from the transmitters to the antenna elements in a fashion to allow control of the antenna toroidal wavenumber spectrum. To date, power levels up to 3.85 MW have been applied to the NSTX plasmas. The frequency and spectrum of the rf waves has been selected to heat electrons via Landau damping and transit time magnetic pumping. The electron temperature has been observed to increase from 400 to 900 eV with little change in plasma density resulting in a plasma stored energy of 59 kJ and a toroidal beta, bT , =10% and bn = 2.7.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Nov 16 00:00:00 EST 2000},
month = {Thu Nov 16 00:00:00 EST 2000}
}

Conference:
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