TITLE

Closed-loop control of ionization oscillations in Hall accelerators

AUTHOR(S)
Barral, S.; Kaczmarczyk, J.; Kurzyna, J.; Dudeck, M.
PUB. DATE
August 2011
SOURCE
Physics of Plasmas;Aug2011, Vol. 18 Issue 8, p083504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Feedback control of ionization oscillations in Hall accelerators is investigated with a proportional-integral-derivative controller acting on the discharge voltage. The stability of the current is found to systematically improve with proportional control, whereas integral and derivative control have in most cases a detrimental or insignificant impact. At low discharge voltages, proportional control eliminates at the same time ionization breathing oscillations as well as a coexisting low frequency mode. A progressive deterioration of the stability is observed at higher voltage, presumably attributable to the limited output voltage range of the controller. The time-averaged characteristics of the discharge such as average current, thrust and efficiency, remain unchanged within measurement uncertainties.
ACCESSION #
65108179

 

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