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Measurement of BAAE and RSAE Mode Structures with high-k Scattering System

Measurement of BAAE and RSAE Mode Structures with high-k Scattering System. Woochang Lee. High-k Scattering System. 280 GHz ( l =1 mm) scattering system 5 detection channels ( 5 discrete k â”´ ) Can cover arbitrary radial position from ~105 cm to ~145 cm

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Measurement of BAAE and RSAE Mode Structures with high-k Scattering System

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  1. Measurement of BAAE and RSAE Mode Structures with high-k Scattering System Woochang Lee

  2. High-k Scattering System • 280 GHz (l=1 mm) scattering system • 5 detection channels (5 discrete k┴) • Can cover arbitrary radial positionfrom ~105 cm to ~145 cm • The scattering volume is spatially localized (w = 3 cm, Lz = ~ 5 cm) • Sensitive to the radial fluctuation • Will be absolutely calibrated soon

  3. BAAE in NSTX N. Gorelenkov 07XP r/a = 0.7 (R ~ 132 cm) Bt = 4.5 kG P_NBI = 2 MW BAAE (n=2)

  4. RSAE in NSTX H. Yuh 07XP R = 120 cm Bt = 5.5 kG P_NBI = 2 MW

  5. Mode structure of RSAE (R=120cm) (R=110cm)

  6. Radial Structure of BAAE by USXR APS07 poster of N. Gorelenkov

  7. Radial Structure of BAAE by Reflectometer APS07 poster of N. Gorelenkov

  8. Experiment Plan • Obtain high-k scattering data at 8~9 R-positions from ~115 cm to ~145 cm for several plasma conditions. Need 7 control access to change launching mirror angle

  9. BAAE of 123816 high-k channel low-k channel

  10. RSAE of 123816 high-k channel low-k channel

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