TY - GEN
T1 - Operation of a versatile multi-power supply system driving non-axisymmetric coil sets on the DIII-D tokamak
AU - Stemprok, R.
AU - Jackson, G. L.
AU - Cary, W. P.
AU - Campbell, G. L.
AU - Nagy, A.
PY - 2009
Y1 - 2009
N2 - We describe the development, and implementation of the DIII-D tokamak power supply system driving non-axisymmetric coil sets. The coil system operates in a broad range of 0 to 7 kA and dc up to 40 kHz using different combinations of power supplies. Three types of power supplies drive the tokamak's non-axisymmetric coil sets; variable unipolar quasi-dc SCR supplies, bi-polar switching power amplifiers, and linear amplifiers. The coils are used primarily for error field correction, resistive wall mode studies, and edge localized mode suppression. A versatile computer program generates the power supply - coil interconnections in the patch panel area for a specific experiment. Control of individual coils, or combinations of coils, is accomplished using the plasma control system (PCS). An upgrade to a precision response of the high current unipolar SCR power supplies has been under development. We discuss routine operation, coil control using the PCS, and challenges in maintaining this complex system.
AB - We describe the development, and implementation of the DIII-D tokamak power supply system driving non-axisymmetric coil sets. The coil system operates in a broad range of 0 to 7 kA and dc up to 40 kHz using different combinations of power supplies. Three types of power supplies drive the tokamak's non-axisymmetric coil sets; variable unipolar quasi-dc SCR supplies, bi-polar switching power amplifiers, and linear amplifiers. The coils are used primarily for error field correction, resistive wall mode studies, and edge localized mode suppression. A versatile computer program generates the power supply - coil interconnections in the patch panel area for a specific experiment. Control of individual coils, or combinations of coils, is accomplished using the plasma control system (PCS). An upgrade to a precision response of the high current unipolar SCR power supplies has been under development. We discuss routine operation, coil control using the PCS, and challenges in maintaining this complex system.
KW - Coil
KW - Linear amplifier
KW - Power supply
UR - https://www.scopus.com/pages/publications/70350706270
UR - https://www.scopus.com/inward/citedby.url?scp=70350706270&partnerID=8YFLogxK
U2 - 10.1109/FUSION.2009.5226391
DO - 10.1109/FUSION.2009.5226391
M3 - Conference contribution
AN - SCOPUS:70350706270
SN - 9781424426362
T3 - Proceedings - Symposium on Fusion Engineering
BT - 2009 23rd IEEE/NPSS Symposium on Fusion Engineering, SOFE 2009
T2 - 2009 23rd IEEE/NPSS Symposium on Fusion Engineering, SOFE 2009
Y2 - 1 June 2009 through 5 June 2009
ER -