Study of SOL/divertor plasmas in JFT-2M

Fusion Science and Technology

Volumn 49, Issue 2, 2006, Pages 168-186

  Kawashima, H ^a,b,c,d   Sengoku, S ^a   Uehara, K ^a   Tamai, H ^a   Shoji, T ^a   Ogawa, H ^a   Shibata, T ^a   Yamamoto, M ^a   Miura, Y ^a   Kusama, Y ^a   Kimura, H ^a   Amemiya, H ^b   Sadamoto, Y ^c   Nagashima, Y ^d  

^a JAPAN ATOMIC ENERGY AGENCY   (Japan)

^b CHUO UNIVERSITY   (Japan)

^c JOETSU UNIVERSITY OF EDUCATION   (Japan)

^d KYUSHU UNIVERSITY   (Japan)

Author keywords

JFT 2M tokamak; Power and particle handling; SOL divertor plasmas

Indexed keywords

ELECTROSTATICS; FUSION REACTOR DIVERTORS; HEATING; OPTIMIZATION; PLASMAS; TOKAMAK DEVICES;

JFT-2M TOKAMAK; POWER AND PARTICLE HANDLING; SOL/DIVERTOR PLASMAS;

FUSION REACTIONS;

EID: 33644595898     PISSN: 15361055     EISSN: None     Source Type: Journal    
DOI: 10.13182/FST06-A1093     Document Type: Article

References (58)

1. S. SENGOKU et al., "Experimental Results on Boundary Plasmas, Resulting Surface Interactions and Extrapolation to Large Fusion Devices," J. Nucl. Mater., 93-94, 75 (1980).
2. M. SHIMADA et al., "Divertor Studies in High-Power Beam Heated Discharges in Doublet-III," J. Nucl. Mater., 128-129, 340 (1984);
3. see also S. SENGOKU et al., "Observation of Very Dense and Cold Divertor Plasma in Beam Heated Doublet-III Tokamak with Single-Null Divertor," Nucl. Fusion, 24, 415 (1984).
4. T. SHOJI et al., "Results from the JFT-2M Experiments," Proc. 10th European Conf. Controlled Fusion and Plasma Heating, 1983, part A, p. 8 (1983).
5. M. MORI, "Stability Limit of Feedback Control of Vertical Plasma Position in the JFT-2M Tokamak," Nucl. Fusion, 27, 725 (1987).
6. M. HASEGAWA et al., "Observation of Divertor Plasma During H- and L-Mode Operation in JFT-2M Tokamak," Proc. 15th Symp. Fusion Technology, 1988, p. 835, Elsevier Science Publishers (1989).
7. N. UEDA et al., "Development of a Two-Dimensional Fluid Code and Its Application to the Doublet III Divertor Experiment," Nucl. Fusion, 28, 1183 (1988).
8. K. NAGASHIMA et al., "Particle and Heat Balance Analysis in Scrape-Off and Divertor Regions of the JFT-2M Tokamak," J. Nucl. Mater., 220-222, 208 (1995).
9. K. UEHARA et al., "Measurement of Ion Temperature and Flow Velocity Using Symmetric and Asymmetric Double Probes in the Boundary Plasma of the JFT-2M Tokamak," Nucl. Fusion, 38, 1665 (1998).
10. H. AMEMIYA et al., "Ion Temperature Measuring Probe in a Strongly Magnetized Plasma," Rev. Sci. Instrum., 65, 2607 (1994).
11. M. MAEDA et al., "Simultaneous Measurements of Plasma Flow and Ion Temperature Using the Asymmetric Double Probe," Jpn. J. Appl. Phys., 36, 6992 (1997).
12. M. MAEDA et al., "Measuring Method for Mach Number in Tokamak Edge Plasma Using Probes," Jpn. J. Appl. Phys., 38, 2971 (1999).
13. K. UEHARA et al., "Transport Model of Boundary Plasma and Evaluation of Transport Coefficients," J. Phys. Soc. Jpn., 72, 94 (2003).
14. K. UEHARA et al., "Electron Energy Distribution Function Measured by Electrostatic Probes at Divertor Plasma in the JFT-2M Tokamak," Jpn. J. Appl. Phys., 42, 657 (2003).
15. K. UEHARA et al., "Direct Measurement of Ion Behavior Using Modified Ion Sensitive Probe in Tokamak Boundary Plasma," J. Phys. Soc. Jpn., 66, 921 (1997).
16. K. UEHARA et al., "Evaluation of Ion Temperature Using Ion Sensitive Probe in the Boundary Plasma of the JFT-2M Tokamak," J. Phys. Soc. Jpn., 72, 2804 (2003).
17. A. LOARTE et al., "ELM Energy and Particle Losses and Their Extrapolation to Burning Plasma Experiments," J. Nucl. Mater., 313-216, 962 (2003).
18. K. NAGASHIMA et al., "Investigation of Edge Localized Mode in the JFT-2M Tokamak," Nucl. Fusion. 36, 335 (1996).
19. K. KAMIYA et al., "Observation of High Recycling Steady H-Mode Edge and Compatibility with Improved Core Confinement Mode on JFT-2M," Nucl. Fusion, 43, 1214 (2003).
20. H. KAWASHIMA et al., "A Comparison Between Divertor Heat Loads in ELMy and HRS H-Modes on IFT-2M," J. Plasma Fusion Res., 80, 907 (2004).
21. S. SENGOKU et al., "Confinement and Fueling Studies During Additional Heating Phase in the JFT-2M Tokamak," J. Nucl. Mater., 145-147, 556 (1987).
22. S. SENGOKU et al., "H-Mode and Recycling Control in the JFT-2M," J. Nucl. Mater., 176-177, 65 (1990).
23. S. SENGOKU et al., "Pump Limiter Experiment on the JFT-2M Tokamak," J. Nucl. Mater., 162-164, 667 (1989).
24. S. SENGOKU et al., "Pump Limiter with Gas-Puffing from Divertor Region in the JFT-2M Tokamak," Proc. 16th European Conf. Controlled Fusion and Plasma Physics, 1989, Vol. 13B, p. 959 (1989).
25. T. SHOJI et al., "Ergodized Edge Experiments in JFT-2M Tokamak," Proc. 17th European Conf. Controlled Fusion and Plasma Heating, 1990, Vol. 14B, p. 1452 (1990).
26. Y. MIURA et al., "Studies of Improved Confinement on JFT-2M," Plasma Phys. Controlled Nucl. Fusion Res., 1, 325 (1991).
27. T. SHOJI et al., "Effects of Ergodization on Plasma Confinement in JFT-2M," J. Nucl. Mater., 196-198, 296 (1992).
28. M. MORI et al., "Plasma Improvement with Ergodic Magnetic Fields in JFT-2M," Plasma Phys. Controlled Nucl. Fusion Res., 2, 567 (1992).
29. H. TAMAI et al., "Improvement of the Density Limit with an External Helical Field on JFT-2M Tokamak," J. Nucl. Mater., 220-222, 365 (1995).
30. H. TAMAI et al., "ELM Control and Boundary Plasma Modification in the JFT-2M Tokamak," Plasma Phys. Controlled Nucl. Fusion Res., 1, 137 (1994).
31. T. SHOJI et al., "Divertor Plasma Modification by Divertor Biasing and Edge Ergodization in JFT-2M," J. Nucl. Mater., 220-222, 357 (1995).
32. H. KAWASHIMA et al., "Study of Runaway Electron Transport in Edge Stochastic Magnetic Field in the JFT-2M Tokamak," J. Plasma Fusion Res., 70, 868 (1994).
33. S. TAKAMURA et al., "Transport of High Energy Electrons in Edge Stochastic Magnetic Layer of Tokamaks," Proc. 21st European Conf. Controlled Fusion and Plasma Physics, 1994, Vol. 18B, p. 890 (1994).
34. K. HOSHINO, "Heating, Current Drive, and Advanced Plasma Control in JFT-2M," Fusion Sci. Technol., 49, 139 (2006).
35. T. SHOJI et al., "Divertor Bias Experiment on JFT-2M," Plasma Phys. Controlled Nucl. Fusion Res., 1, 323 (1992).
36. S. OHDACHI et al., "Fluctuations and Transport of JFT-2M Scrape-Off Plasma," Plasma Phys. Control. Fusion, 36, A201 (1994).
37. J. HARA et al., "Effect of Asymmetric Plasma Potential in the SOL on the Particle Radial Transport and Heat Flux Broadening," Proc. Int. Conf. Plasma Physics, p. 618 (1996).
38. H. OGAWA et al., "Studies of Boundary Plasmas and Fueling on the JFT-2M," J. Nucl. Mater., 266-269, 623 (1999).
39. H. KAWASHIMA et al., "Study of a Closed Divertor with Strong Gas Puffing on JFT-2M," Nucl. Fusion, 39, 1679 (1999).
40. S. SENGOKU et al., "Regime of Improved Confinement in Neutral-Beam-Heated Limiter Discharges of a Tokamak," Phys. Rev. Lett., 59, 450 (1987).
41. S. SENGOKU et al., "Enhancement of Wall Fueling and Improvement in nt of a Beam-Heated H-Mode Discharge by Electron Cyclotron Wave in the JFT-2M Tokamak," J. Phys. Soc. Jpn., 57, 903 (1988).
42. F. X. SOELDNER et al., "Improved Confinement in High-Density Ohmic Discharges in ASDEX," Phys. Rev. Lett., 61, 1105 (1988).
43. J. ONGENE et al., "Improved Confinement in TEXTOR," Nucl. Fusion, 33, 283 (1993).
44. T. SHOJI et al., "High Beta and Confinement Studies in the JFT-2M Tokamak," Proc. 12th European Conf. Controlled Fusion and Plasma Heating, 1985, Vol. 9F, part 1, p. 62 (1985).
45. I. NAKAZAWA et al., "Divertor Plasma Characteristics During H-Mode in JFT-2M Tokamak," Proc. 16th European Conf. Controlled Fusion and Plasma Physics, 1989, Vol. 13B, p. 887 (1989).
46. I. YANAGISAWA et al., "Design of Divertor Plate and Measurements of Double-Null Open Divertor Plasma in the JFT-2M," JAERI-M 87-192, Japan Atomic Energy Research Institute (1987).
47. "ITER Physics Basis, Chapter 4: Power and Particle Control," Nucl. Fusion, 39, 2391 (1999).
48. "ITER Technical Basis," ITER EDA Documentation Series No. 24, International Atomic Energy Agency (2002).
49. H. OGAWA et al., "Closed Divertor Experiments on JFT-2M," Proc. Int. Conf. Plasma Physics, p. 1250 (1996).
50. H. KAWASHIMA et al., "Study of Dense and Cold Divertor with H-Mode in the JFT-2M," Proc. 24th European Conf. Controlled Fusion and Plasma Physics, 1997, Vol. 21A, part II, p. 705 (1997).
51. H. KAWASHIMA et al., "Characteristics of Boundary Plasmas After the Removal of Divertor Baffle Plates and Boronization on JFT-2M," J. Nucl. Mater., 313-316, 1338 (2003).
52. M. MORI et al., "A New Mode of Improved Confinement in Discharges with Stationary Density," Nucl. Fusion, 28, 1892 (1988).
53. Y. NAGASHIMA et al., "Coherent Edge Fluctuation Measurements in H-Mode Discharges on JFT-2M," Plasma Phys. Control. Fusion, 46, A381 (2004).
54. S. KASAI et al., "Plasma Diagnostics in JFT-2M," Fusion Sci. Technol., 49, 225 (2006).
55. N. WINSOR et al., "Geodesic Acoustic Waves in Hydromagnetic Systems," Phys. Fluids, 11, 2448 (1968).
56. P. DIAMOND et al., "Zonal Flows in Plasma - A Review," Plasma Phys. Control. Fusion, 47, R35 (2005).
57. Y. NAGASHIMA et al., "Observation of Nonlinear Couplings Between Coherent and Turbulent Potential Fluctuations in Ohmically Heated Plasmas on JFT-2M," Phys. Rev. Lett., 95, 095002 (2005).
58. K. SHINOHARA et al., "Density Fluctuations in the JFT-2M H-Mode Plasma Measured by Using a New Analysis Method of Microwave Reflectometry," J. Plasma Fusion Res., 74, 607 (1998).