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Investigations of Current Profile in LHCD Plasma

HT-7. Investigations of Current Profile in LHCD Plasma. W K Li ， B J Ding ， M H Li ， E H Kong ， J F Shan LHCD Group. HT-7. Outline. Motivation Obtained results on HT-7 tokamak Experiment arrangement. HT-7. Motivation.

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Investigations of Current Profile in LHCD Plasma

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  1. HT-7 Investigations of Current Profile in LHCD Plasma W K Li，B J Ding，M H Li，E H Kong，J F Shan LHCD Group

  2. HT-7 Outline • Motivation • Obtained results on HT-7 tokamak • Experiment arrangement

  3. HT-7 Motivation • The plasma current profile is modified by the LHW power in LHCD plasma by means of optimizing power value and spectrum. • The sawtooth period is determined by the linear MHD stability of the internal kink, which is dominated by the plasma current profile. • Study the sawtooth behaviour so as to investigate the change of plasma current profile during the plasma development and the effect of LHW power value and spectrum on the plasma current profile. • Seek for high confinement LHCD plasma.

  4. HT-7 Obtained results on HT-7 tokamak

  5. HT-7 Obtained results on HT-7 tokamak

  6. HT-7 Obtained results on HT-7 tokamak

  7. HT-7 Obtained results on HT-7 tokamak

  8. HT-7 Obtained results on HT-7 tokamak

  9. HT-7 Obtained results on HT-7 tokamak Soft X-ray in Ohm phase

  10. HT-7 Obtained results on HT-7 tokamak Soft X-ray in LHCD phase

  11. HT-7 Experiment arrangement • 实验方法： 优化LHW参数，通过锯齿行为分析LHCD对电流剖面的影响，探索改善约束最佳LHCD条件。 • 相同LHW功率，扫描相位角，改变功率沉积位置 • 相同波谱条件下，扫描LHW功率，改变电流峰值 • 实验条件及参数: • Ip=150kA，Ne=1.5e19m-3， PLHW = 200-500kW • 相位角 -90° 0° 90° 180° • 希望配合的诊断： Te(r,t), Ti(r,t), Ne(r,t), Hx(r,t), Sx(r,t),W(t),li(t),Ha

  12. THANKS!!!

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