TY  - JOUR
AU  - Schweer, B.
AU  - Borsuk, V.
AU  - Durodier, F.
AU  - Ongena, J.
AU  - Vervier, M.
AU  - Louche, F.
AU  - Messian, A.
AU  - Hartmann, D.
AU  - Hollfeld, K. P.
AU  - Neubauer, O.
AU  - Offermanns, G.
TI  - Development of an ICRH antenna system at W7-X for plasma heating and wall conditioning
JO  - Fusion engineering and design
VL  - 123
SN  - 0920-3796
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2017-06342
SP  - 303-308
PY  - 2017
AB  - An ICRH antenna system is under construction to be ready for use in the operational phase 1.2 of W7-X. A two strap antenna, with a surface adapted to the 3D shape of the Last Closed Flux Surface (LCFS) of the standard magnetic configuration (m/n = 5/5), will be installed in the equatorial plane on the low field side of W7-X. The antenna system is optimised for plasma heating and wall conditioning in presence of the magnetic field in the frequency range 25–38 MHz. Each strap is short-circuited on one end, is pre-matched using a tunable capacitor on the other end with connection to the RF power source about halfway in the poloidal direction. To allow optimal coupling to different magnetic configurations in W7-X the antenna can be moved radially over a distance of 350 mm. The cooling circuits in the antenna head are designed to sustain cw W7-X plasma operation in a retracted position and 2 MW ICRH pulses with maximum 10 s duration every 300 s close to the LCFS.
T2  - 29th Symposium on Fusion Technology (SOFT 2016)
CY  - 5 Sep 2016 - 9 Sep 2016, Prague (Czech Republic)
Y2  - 5 Sep 2016 - 9 Sep 2016
M2  - Prague, Czech Republic
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000418992000060
DO  - DOI:10.1016/j.fusengdes.2017.05.019
UR  - https://juser.fz-juelich.de/record/837417
ER  -