TY - GEN
T1 - Electron cyclotron resonance heating in the second harmonic ordinary mode at ASDEX upgrade
AU - Höhnle, H.
AU - Stober, J.
AU - Behler, K.
AU - Herrmann, A.
AU - Kasparek, W.
AU - Neu, R.
AU - Mlynek, A.
AU - Reich, M.
AU - Stroth, U.
AU - Treutterer, W.
PY - 2011
Y1 - 2011
N2 - In the 2009 campaign the first discharges with the 02 mode was demonstrated without the feedback algorithm [4]. Here the problem was the limited ECRI-I power and the loss of the second absorption due to density increase and the outwards movement of the beam off the holographic mirror. The feedback control based on thermocouples in the holographic mirror is scheduled to react on these density changes. In first experiments, with a manually misaligned injection angle, the expected behaviour of the feedback algorithm could be demonstrated; also the interlock was tested successfully. Heating experiments in discharges with high plasma current and a safety factory of q95 = 3.5 are planned at the end of this campaign.
AB - In the 2009 campaign the first discharges with the 02 mode was demonstrated without the feedback algorithm [4]. Here the problem was the limited ECRI-I power and the loss of the second absorption due to density increase and the outwards movement of the beam off the holographic mirror. The feedback control based on thermocouples in the holographic mirror is scheduled to react on these density changes. In first experiments, with a manually misaligned injection angle, the expected behaviour of the feedback algorithm could be demonstrated; also the interlock was tested successfully. Heating experiments in discharges with high plasma current and a safety factory of q95 = 3.5 are planned at the end of this campaign.
UR - http://www.scopus.com/inward/record.url?scp=84867656135&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84867656135
SN - 9781618395931
T3 - 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts
SP - 885
EP - 888
BT - 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts
T2 - 38th EPS Conference on Plasma Physics 2011, EPS 2011
Y2 - 27 June 2011 through 1 July 2011
ER -