Page 8 - Overview of C-2W Results and Diagnostic Systems
P. 8
Efficient Fast Wave Coupling at All Phases Has Been Achieved
• Fastwavecoupling(forallphases)increasesas antenna approaches denser plasma
• Fastwavecancoupleintoplasmacoreevenwhen antenna close to the wall, where ne < 1x1012 cm-3
• Fastwavepropagationdirectioniswellcontrolledby relative phase between antenna straps
• Noslowwavehasbeenobserved,ingoodagreement with calculations of fast wave dispersion relation
D2
1013
Antenna
locations
1012
-20 cm
-25 cm
Rant =-35cm Rant =-30cm Rant =-25cm Rant =-20cm
Rant =-15cm
-35 cm
X-Axis (cm)
1800 phasing
62nd APS-DPP, November 9-13, 2020 8
Density (cm-3)
