Initial operation of NSTX with plasma control

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First plasma, with a maximum current of 300kA, was achieved on NSTX in February 1999. These results were obtained using preprogrammed coil currents. The first controlled plasmas on NSTX were made starting in August 1999 with the full 1MA plasma current achieved in December 1999. The controlled quantities were plasma position (R, Z) and current (Ip). Variations in the plasma shape are achieved by adding preprogrammed currents to those determined by the control parameters. The control system is fully digital, with plasma position and current control, data acquisition, and power supply control all occurring in the same four-processor real time ... continued below

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143 Kilobytes pages

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Gates, D.; Bell, M.; Ferron, J.; Kaye, S.; Menard, J.; Mueller, D. et al. June 13, 2000.

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Description

First plasma, with a maximum current of 300kA, was achieved on NSTX in February 1999. These results were obtained using preprogrammed coil currents. The first controlled plasmas on NSTX were made starting in August 1999 with the full 1MA plasma current achieved in December 1999. The controlled quantities were plasma position (R, Z) and current (Ip). Variations in the plasma shape are achieved by adding preprogrammed currents to those determined by the control parameters. The control system is fully digital, with plasma position and current control, data acquisition, and power supply control all occurring in the same four-processor real time computer. The system uses the PCS (Plasma Control Software) system designed at General Atomics. Modular control algorithms, specific to NSTX, were written and incorporated into the PCS. The application algorithms do the actual control calculations, with the PCS handling data passing. The control system, including planned upgrades, will be described, along with results of the initial controlled plasma operations. Analysis of the performance of the control system will also be presented.

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143 Kilobytes pages

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INIS; OSTI as DE00756721

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  • Other Information: PBD: 13 Jun 2000

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  • Report No.: PPPL-3453
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/756721 | External Link
  • Office of Scientific & Technical Information Report Number: 756721
  • Archival Resource Key: ark:/67531/metadc706072

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  • June 13, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 15, 2016, 7:34 p.m.

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Gates, D.; Bell, M.; Ferron, J.; Kaye, S.; Menard, J.; Mueller, D. et al. Initial operation of NSTX with plasma control, report, June 13, 2000; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc706072/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.