Design status of the ITER ECH upper launcher steering mirror mechanism

The ITER ECRH upper port antenna (or launcher) will be used to drive current locally for stabilising the neoclassical tearing mode (NTM)) by depositing mm-wave power inside of the island which forms on the q=3/2 or 2 rational magnetic flux surfaces and control the sawtooth instability by driving current near the q=1 surface. This requires the launcher to be capable of steering the focused beam deposition location across the resonant flux surface over the range where the q=1, 3/2 and 2 surfaces are expected to be found (roughly the outer half of the plasma) [4].


Published in:
22Nd Ieee/Npss Symposium On Fusion Engineering, 307-310
Presented at:
22nd IEEE/NPSS Symposium on Fusion Engineering, Albuquerque, NM, Jun 17-21, 2007
Year:
2007
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-4244-1193-1
Keywords:
Laboratories:
SPC
CRPP




 Record created 2012-07-04, last modified 2018-01-28


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