Scaling of lower hybrid current drive with temperature

Conference · Mon Jun 01 04:00:00 EDT 1992

OSTI ID:7297248

Harvey, R W ^[1]; McCoy, M G ^[2]; Ram, A K; Bers, A ^[3]; Fuchs, V ^[4]

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1. General Atomics, San Diego, CA (United States)
2. Lawrence Livermore National Lab., CA (United States)
3. Massachusetts Inst. of Tech., Cambridge, MA (United States)
4. CCFM, Varennes, PQ (Canada)

The 3-D Fokker-Planck/quasilinear code (CQL3D) is used to study the temperature scaling of lower hybrid current drive (LHCD) in the JET and JT-60 experiments. An offset-linear increase of current drive efficiency is obtained as a function of volume average temperature {l angle}T{sub e}{r angle} up to {approximately} 2.5, and reduced rate of efficiency increase is found at higher temperatures. The LHCD results indicate some fast wave/LH current drive synergy in the JET LH/FW experiments; however, code results discussed here show that synergy is not due to TTMP damping of the fast wave.

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-89ER51114; W-7405-ENG-48; FG02-90ER54084
• OSTI ID: 7297248
• Report Number(s): GA-A-20945; CONF-920717--4; ON: DE92018541
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
ELECTRON TEMPERATURE
EQUATIONS
FOKKER-PLANCK EQUATION
JET TOKAMAK
JT-60 TOKAMAK
LOWER HYBRID CURRENT DRIVE
NON-INDUCTIVE CURRENT DRIVE
PARTIAL DIFFERENTIAL EQUATIONS
SCALING LAWS
TEMPERATURE DEPENDENCE
THERMONUCLEAR DEVICES
TOKAMAK DEVICES