Power supplies for plasma column control in COMPASS tokamak

0396517 - ÚFP 2014 RIV CH eng J - Journal Article
Havlíček, Josef - Hauptmann, R. - Peroutka, Oldřich - Tadros, Momtaz - Hron, Martin - Janky, Filip - Vondráček, Petr - Cahyna, Pavel - Mikulín, Ondřej - Šesták, David - Junek, Pavel - Pánek, Radomír
Power supplies for plasma column control in COMPASS tokamak.
Fusion Engineering and Design. Roč. 88, 9-10 (2013), s. 1640-1645. ISSN 0920-3796. E-ISSN 1873-7196.
[Symposium on Fusion Technology (SOFT-27)/27./. Liège, 24.09.2012-28.09.2012]
R&D Projects: GA ČR GAP205/11/2470; GA MŠMT 7G10072; GA MŠMT(CZ) LM2011021
Institutional support: RVO:61389021
Keywords : tokamak * Power supplies * Feedback control * Vertical displacement * Vertical kicks
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.149, year: 2013
http://www.sciencedirect.com/science/article/pii/S0920379613001543#

The main magnetic fields in COMPASS – i.e. The Toroidal, Magnetising, Equilibrium, and Shaping Fields – are created by a set of four corresponding thyristor power supplies controlled in a 0.5 ms loop.The plasma position has to be controlled both radially and vertically by two additional magnetic fields provided by two fast amplifiers (FAs) based on MOSFET technology, each supplying ±100 V and up to ±5 kA.Currently, an ongoing project aims at ELM triggering by fast changes of the vertical position of the plasma column, also referred to as vertical kicks. For this purpose, a new Vertical Kicks Power Supply (VKPS) capable of quick change of vertical plasma position is being constructed. This power supply should operate at up to 1.2 kV with switching frequency up to 5 kHz. It is designed as a H-bridge but based on IGBT transistors which can be operated at higher voltages than MOSFETs.We focus on the FAs and VKPS engineering design and required output parameters.
Permanent Link: http://hdl.handle.net/11104/0224274