Energy efficiency of the CTX magnetized coaxial plasma source

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The energy efficiency of the CTX coaxial plasma source in creating spheromaks is determined experimentally to be in agreement with the theoretical prediction of lambda/sub sp//lambda/sub g/, where del x B = lambda/sub sp/ B in the spheromak, and lambda/sub g/ identical with ..mu../sub 0/I/sub g//phi/sub g/ with I/sub g/ the source current and phi/sub g/ the magnetic flux through either source electrode. This is shown to be equivalent to magnetic helicity conservation. The spheromak impurity radiation was measured using an absolutely calibrated single chord bolometer system. The theoretical efficiency is within the experimental uncertainty of the ratio of spheromak ... continued below

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Pages: 5

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Fernandez, J.C.; Barnes, C.W.; Jarboe, T.R.; Knox, S.O.; Platts, D.A. & McKenna, K.F. January 1, 1985.

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Description

The energy efficiency of the CTX coaxial plasma source in creating spheromaks is determined experimentally to be in agreement with the theoretical prediction of lambda/sub sp//lambda/sub g/, where del x B = lambda/sub sp/ B in the spheromak, and lambda/sub g/ identical with ..mu../sub 0/I/sub g//phi/sub g/ with I/sub g/ the source current and phi/sub g/ the magnetic flux through either source electrode. This is shown to be equivalent to magnetic helicity conservation. The spheromak impurity radiation was measured using an absolutely calibrated single chord bolometer system. The theoretical efficiency is within the experimental uncertainty of the ratio of spheromak radiated energy to source input energy in a group of ''dirty'' discharges. But the radiation measurement uncertainty is too large to determine whether a substantial part of the excess source energy not used in the production of spheromak magnetic energy is radiated from the spheromak volume.

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Pages: 5

Notes

NTIS, PC A02/MF A01.

Source

  • 7. US symposium on compact toroid research, Santa Fe, NM, USA, 21 May 1985

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  • Other: DE85012735
  • Report No.: LA-UR-85-1818
  • Report No.: CONF-8505100-2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5709743
  • Archival Resource Key: ark:/67531/metadc1093353

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  • January 1, 1985

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • May 22, 2018, 2:08 p.m.

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Fernandez, J.C.; Barnes, C.W.; Jarboe, T.R.; Knox, S.O.; Platts, D.A. & McKenna, K.F. Energy efficiency of the CTX magnetized coaxial plasma source, article, January 1, 1985; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1093353/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.