Science and technology of the 10 MA spherical tori

Y. K.M. Peng, W. Reiersen, S. M. Kaye, S. C. Jardin, J. Menard, D. Gates, J. Robinson, F. Dahlgren, L. R. Grisham, R. Majeski, D. R. Mikkelsen, M. Ono, J. A. Schmidt, J. R. Wilson, R. Woolley, E. T. Cheng, R. J. Cerbone, D. J. Strickler, J. D. Galambos, I. N. SviatoslavskyK. C. Shaing, X. Wang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The scientific parameters and the technology issues for a modest size spherical torus (ST) at 10 MA plasma current are discussed. This class of devices includes a DT-capable ST experiment (DTST, R0 = 1.2 m) for extended plasma performance tests for limited pulse lengths and neutron fluences, and a volume neutron source (VNS, R0 = 1.1 m) for steady state energy technology testing to high neutron fluences. The scientific issues of interest for DTST include non-inductive ramp-up of plasma current on a limited timescale (approximately 30 s), the confinement needed for high Q burn, the behaviour of energetic particles, the physics and techniques to handle intense plasma exhaust, and the possibility of high performance plasma regimes free of disruptions or large disruption impact. Of further interest for the VNS would be steady state operation using large external current drive, possibly at a modest Q (approximately 1-2), achieving significant neutron wall loading (approximately 1 MW/m2) and a configuration relatively amenable to remote maintenance. A much longer timescale would be permitted in a VNS for non-inductive current ramp-up. The centre leg of the toroidal field coils, possibly multiturn for DTST and necessarily single turn for a VNS without significant nuclear shielding, presents technical and material issues of unique importance to the ST. Positive ion neutral beam injection and high harmonic fast wave (approximately 80 MHz) heating and current drive systems already available are likely to be adequate for DTST following pulse length extension to approximately 50 s. Given an adequate physics database, the remaining enabling technologies needed for the VNS appear largely similar in nature to those of the ITER EDA design.

Original languageEnglish
Pages (from-to)583-587
Number of pages5
JournalNuclear Fusion
Volume40
Issue numberSPEC. ISS. 3
DOIs
Publication statusPublished - 2000 Jan 1

Fingerprint

plasma currents
ramps
neutrons
fluence
energy technology
field coils
radiation shielding
physics
beam injection
performance tests
neutral beams
energetic particles
neutron sources
pulses
positive ions
maintenance
Q factors
ion beams
harmonics
heating

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Peng, Y. K. M., Reiersen, W., Kaye, S. M., Jardin, S. C., Menard, J., Gates, D., ... Wang, X. (2000). Science and technology of the 10 MA spherical tori. Nuclear Fusion, 40(SPEC. ISS. 3), 583-587. https://doi.org/10.1088/0029-5515/40/3Y/320
Peng, Y. K.M. ; Reiersen, W. ; Kaye, S. M. ; Jardin, S. C. ; Menard, J. ; Gates, D. ; Robinson, J. ; Dahlgren, F. ; Grisham, L. R. ; Majeski, R. ; Mikkelsen, D. R. ; Ono, M. ; Schmidt, J. A. ; Wilson, J. R. ; Woolley, R. ; Cheng, E. T. ; Cerbone, R. J. ; Strickler, D. J. ; Galambos, J. D. ; Sviatoslavsky, I. N. ; Shaing, K. C. ; Wang, X. / Science and technology of the 10 MA spherical tori. In: Nuclear Fusion. 2000 ; Vol. 40, No. SPEC. ISS. 3. pp. 583-587.
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Peng, YKM, Reiersen, W, Kaye, SM, Jardin, SC, Menard, J, Gates, D, Robinson, J, Dahlgren, F, Grisham, LR, Majeski, R, Mikkelsen, DR, Ono, M, Schmidt, JA, Wilson, JR, Woolley, R, Cheng, ET, Cerbone, RJ, Strickler, DJ, Galambos, JD, Sviatoslavsky, IN, Shaing, KC & Wang, X 2000, 'Science and technology of the 10 MA spherical tori', Nuclear Fusion, vol. 40, no. SPEC. ISS. 3, pp. 583-587. https://doi.org/10.1088/0029-5515/40/3Y/320

Science and technology of the 10 MA spherical tori. / Peng, Y. K.M.; Reiersen, W.; Kaye, S. M.; Jardin, S. C.; Menard, J.; Gates, D.; Robinson, J.; Dahlgren, F.; Grisham, L. R.; Majeski, R.; Mikkelsen, D. R.; Ono, M.; Schmidt, J. A.; Wilson, J. R.; Woolley, R.; Cheng, E. T.; Cerbone, R. J.; Strickler, D. J.; Galambos, J. D.; Sviatoslavsky, I. N.; Shaing, K. C.; Wang, X.

In: Nuclear Fusion, Vol. 40, No. SPEC. ISS. 3, 01.01.2000, p. 583-587.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Science and technology of the 10 MA spherical tori

AU - Peng, Y. K.M.

AU - Reiersen, W.

AU - Kaye, S. M.

AU - Jardin, S. C.

AU - Menard, J.

AU - Gates, D.

AU - Robinson, J.

AU - Dahlgren, F.

AU - Grisham, L. R.

AU - Majeski, R.

AU - Mikkelsen, D. R.

AU - Ono, M.

AU - Schmidt, J. A.

AU - Wilson, J. R.

AU - Woolley, R.

AU - Cheng, E. T.

AU - Cerbone, R. J.

AU - Strickler, D. J.

AU - Galambos, J. D.

AU - Sviatoslavsky, I. N.

AU - Shaing, K. C.

AU - Wang, X.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - The scientific parameters and the technology issues for a modest size spherical torus (ST) at 10 MA plasma current are discussed. This class of devices includes a DT-capable ST experiment (DTST, R0 = 1.2 m) for extended plasma performance tests for limited pulse lengths and neutron fluences, and a volume neutron source (VNS, R0 = 1.1 m) for steady state energy technology testing to high neutron fluences. The scientific issues of interest for DTST include non-inductive ramp-up of plasma current on a limited timescale (approximately 30 s), the confinement needed for high Q burn, the behaviour of energetic particles, the physics and techniques to handle intense plasma exhaust, and the possibility of high performance plasma regimes free of disruptions or large disruption impact. Of further interest for the VNS would be steady state operation using large external current drive, possibly at a modest Q (approximately 1-2), achieving significant neutron wall loading (approximately 1 MW/m2) and a configuration relatively amenable to remote maintenance. A much longer timescale would be permitted in a VNS for non-inductive current ramp-up. The centre leg of the toroidal field coils, possibly multiturn for DTST and necessarily single turn for a VNS without significant nuclear shielding, presents technical and material issues of unique importance to the ST. Positive ion neutral beam injection and high harmonic fast wave (approximately 80 MHz) heating and current drive systems already available are likely to be adequate for DTST following pulse length extension to approximately 50 s. Given an adequate physics database, the remaining enabling technologies needed for the VNS appear largely similar in nature to those of the ITER EDA design.

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Peng YKM, Reiersen W, Kaye SM, Jardin SC, Menard J, Gates D et al. Science and technology of the 10 MA spherical tori. Nuclear Fusion. 2000 Jan 1;40(SPEC. ISS. 3):583-587. https://doi.org/10.1088/0029-5515/40/3Y/320