Measurement of BAAE and RSAE Mode Structures with high-k Scattering System
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Transcript of Measurement of BAAE and RSAE Mode Structures with high-k Scattering System
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Measurement of BAAE and RSAE Mode Structures
with high-k Scattering System
Woochang Lee
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High-k Scattering System
• 280 GHz (=1 mm) scattering system
• 5 detection channels (5 discrete k┴)
• Can cover arbitrary radial position from ~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
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BAAE in NSTX
N. Gorelenkov 07XP
r/a = 0.7 (R ~ 132 cm)
Bt = 4.5 kG
P_NBI = 2 MW
BAAE (n=2)
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RSAE in NSTX
H. Yuh 07XP
R = 120 cm
Bt = 5.5 kG
P_NBI = 2 MW
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Mode structure of RSAE(R=120cm) (R=110cm)
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Radial Structure of BAAE by USXR
APS07 poster of
N. Gorelenkov
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Radial Structure of BAAE by Reflectometer
APS07 poster of
N. Gorelenkov
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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
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BAAE of 123816
high-k channel
low-k channel
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RSAE of 123816
high-k channel
low-k channel