论文信息 - Electron heating via mode converted ion Bernstein waves in the Alcator C-Mod tokamak - 字舞流文

Electron heating via mode converted ion Bernstein waves in the Alcator C-Mod tokamak

Highly localized direct electron heating [full width at half-maximum (FWHM)≅0.2a] via mode converted ion Bernstein waves has been observed in the Alcator C-Mod Tokamak [I. H. Hutchinson et al., Phys. Plasmas 1, 1511 (1994)]. Electron heating at or near the plasma center (r/a⩾0.3) has been observed in H(3He) discharges at B0=(6.0–6.5) T and ne(0)≅1.8×1020 m−3. [Here, the minority ion species is indicated parenthetically.] Off-axis heating (r/a⩾0.5) has also been observed in D(3He) plasmas at B0=7.9 T. The concentration of 3He in these experiments was in the range of n3He/ne≅(0.2–0.3) and the locations of the mode conversion layer and electron heating peak could be controlled by changing the 3He concentration or toroidal magnetic field (B0). The electron heating profiles were deduced using a rf modulation technique. Detailed comparisons with one-dimensional and toroidal full-wave models in the ion cyclotron range of frequencies have been carried out. One-dimensional full-wave code predictions were found to ...

J. Snipes | M. Brambilla | P. Bonoli | S. Wolfe | M. Porkolab | Y. Takase | M. Greenwald | B. Lipschultz | C. Rost | I. Hutchinson | G. McCracken | R. Granetz | J. Irby | P. Stek | M. May | R. Boivin | S. Horne | B. LaBombard | C. Fiore | J. Terry | E. Marmar | R. Watterson | F. Bombarda | D. Garnier | A. Hubbard | J. Goetz | A. Mazurenko | H. Ohkawa | D. Pappas | P. O'Shea | B. Welch | R. Nachtrieb | S. Golovato | C. Christensen | D. Jablonski | A. Niemczewski | J. Reardon | J. Rice | J. Schachter | K. Takase | Y. Wang | G. Mccracken

[1] J. Rice,et al. Survey of ICRF heating experiments and enhanced performance modes in Alcator C-Mod , 1996 .

[2] Ram,et al. Mode conversion heating experiments on the Tore Supra tokamak. , 1996, Physical review letters.

[3] Murakami,et al. Mode conversion heating and current drive experiments in TFTR. , 1996, Physical review letters.

[4] V. Fuchs,et al. Mode conversion and electron damping of the fast Alfvén wave in a tokamak at the ion–ion hybrid frequency , 1995 .

[5] Wilson,et al. Electron heating and current drive by mode converted slow waves. , 1994, Physical review letters.

[6] P. T. Bonoli,et al. First results from Alcator‐C‐MOD* , 1994 .

[7] Charles F. F. Karney,et al. Approximate formula for radiofrequency current drive efficiency with magnetic trapping , 1991 .

[8] A. Ram,et al. Propagation and damping of mode converted ion-Bernstein waves in toroidal plasmas , 1991 .

[9] H. Weitzner,et al. Global ICRF wave propagation in edge plasma and Faraday shield regions , 1990 .

[10] V. Fuchs,et al. Dissipative mode coupling in ion-cyclotron resonance minority heating , 1988 .

[11] M. Brambilla,et al. Numerical simulation of ion cyclotron heating of hot tokamak plasmas , 1988 .

[12] M. Brambilla. Theory of Bernstein wave coupling with loop antennas , 1988 .

[13] P. Colestock,et al. An algorithm for the calculation of three-dimensional ICRF fields in tokamak geometry , 1987 .

[14] D. Swanson. Radio frequency heating in the ion‐cyclotron range of frequencies , 1985 .

[15] K. Miyamoto,et al. Plasma physics and controlled nuclear fusion , 1979 .

[16] F. W. Perkins,et al. Heating tokamaks via the ion-cyclotron and ion-ion hybrid resonances , 1977 .

[17] B. McVey,et al. Mode Conversion of the Fast Magnetosonic Wave in a Deuterium-Hydrogen Tokamak Plasma , 1977 .

[18] M. Brambilla,et al. A Full Wave Code for Ion Cyclotron Waves in Toroidal Plasmas , 1996 .

[19] Joseph P. Dougherty,et al. Waves in plasmas. , 1993 .

[20] Tadashi Sekiguchi,et al. Plasma Physics and Controlled Nuclear Fusion Research , 1987 .