English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Modelling of mixed-phasing antenna-plasma interactions on JET A2 antennas

MPS-Authors
/persons/resource/persons110070

Noterdaeme,  J. M.
Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

D'Ippolito, D. A., Myra, J. R., Ryan, P. M., Righi, E., Heikkinen, J., Lamalle, P. U., et al. (2002). Modelling of mixed-phasing antenna-plasma interactions on JET A2 antennas. Nuclear Fusion, 42, 1357-1365.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-4195-3
Abstract
The use of mixed(monopole-dipole)-phasing of a set of ion cyclotron range of frequency antennas is potentially useful to optimize tokamak performance. However, recent mixed-phasing experiments on JET, described here, showed undesirable antenna- plasma interactions under certain circumstances. A possible physical mechanism to explain the experimental results is discussed, namely, rf-driven dc parallel currents flowing between adjacent antennas with different phasings can lead to arcing on the antenna with the largest sheath voltage. Means of controlling the interaction are discussed.