Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U

R. Raman; T. R. Jarboe; S. C. Jardin; C. E. Kessel; D. Mueller; B. A. Nelson; F. Poli; S. P. Gerhardt; S. M. Kaye; J. E. Menard; M. Ono; V. A. Soukhanovskii

Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U

R. Raman, T. R. Jarboe, S. C. Jardin, C. E. Kessel, D. Mueller, B. A. Nelson, F. Poli, S. P. Gerhardt, S. M. Kaye, J. E. Menard, M. Ono, V. A. Soukhanovskii

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Transient Coaxial Helicity Injection (CHI) in NSTX has generated closed flux plasma currents up to 200 kA. When induction from the central solenoid is then added to these discharges they achieved 1 MA of plasma current using 65% of the solenoid flux of standard induction-only discharges. The CHI-initiated discharges have low plasma density and normalized internal plasma inductance of 0.35 through the inductive ramp, typical of advanced scenarios planned for future STs. An important objective of the NSTX-U program is to ramp-up CHI-started discharges non-inductively to the steady-state current sustainment levels. In support of this goal, the Tokamak Simulation Code (TSC) has been used to conduct initial simulations of a full discharge modeling in which a CHI-started discharge is ramped-up in current to 1 MA using a combination neutral beam current drive and bootstrap current overdrive.

Original language	English (US)
Title of host publication	40th EPS Conference on Plasma Physics, EPS 2013
Publisher	European Physical Society (EPS)
Pages	13-16
Number of pages	4
ISBN (Print)	9781632663108
State	Published - 2013
Event	40th EPS Conference on Plasma Physics, EPS 2013 - Espoo, Finland Duration: Jul 1 2013 → Jul 5 2013

Publication series

Name	40th EPS Conference on Plasma Physics, EPS 2013
Volume	1

Other

Other	40th EPS Conference on Plasma Physics, EPS 2013
Country/Territory	Finland
City	Espoo
Period	7/1/13 → 7/5/13

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Cite this

Raman, R., Jarboe, T. R., Jardin, S. C., Kessel, C. E., Mueller, D., Nelson, B. A., Poli, F., Gerhardt, S. P., Kaye, S. M., Menard, J. E., Ono, M., & Soukhanovskii, V. A. (2013). Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U. In 40th EPS Conference on Plasma Physics, EPS 2013 (pp. 13-16). (40th EPS Conference on Plasma Physics, EPS 2013; Vol. 1). European Physical Society (EPS).

@inproceedings{ee73b2340cb349dd88f1c0e72c0f9fb7,

title = "Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U",

abstract = "Transient Coaxial Helicity Injection (CHI) in NSTX has generated closed flux plasma currents up to 200 kA. When induction from the central solenoid is then added to these discharges they achieved 1 MA of plasma current using 65\% of the solenoid flux of standard induction-only discharges. The CHI-initiated discharges have low plasma density and normalized internal plasma inductance of 0.35 through the inductive ramp, typical of advanced scenarios planned for future STs. An important objective of the NSTX-U program is to ramp-up CHI-started discharges non-inductively to the steady-state current sustainment levels. In support of this goal, the Tokamak Simulation Code (TSC) has been used to conduct initial simulations of a full discharge modeling in which a CHI-started discharge is ramped-up in current to 1 MA using a combination neutral beam current drive and bootstrap current overdrive.",

author = "R. Raman and Jarboe, \{T. R.\} and Jardin, \{S. C.\} and Kessel, \{C. E.\} and D. Mueller and Nelson, \{B. A.\} and F. Poli and Gerhardt, \{S. P.\} and Kaye, \{S. M.\} and Menard, \{J. E.\} and M. Ono and Soukhanovskii, \{V. A.\}",

year = "2013",

language = "English (US)",

isbn = "9781632663108",

series = "40th EPS Conference on Plasma Physics, EPS 2013",

publisher = "European Physical Society (EPS)",

pages = "13--16",

booktitle = "40th EPS Conference on Plasma Physics, EPS 2013",

note = "40th EPS Conference on Plasma Physics, EPS 2013 ; Conference date: 01-07-2013 Through 05-07-2013",

}

Raman, R, Jarboe, TR, Jardin, SC, Kessel, CE, Mueller, D, Nelson, BA, Poli, F, Gerhardt, SP , Kaye, SM , Menard, JE, Ono, M & Soukhanovskii, VA 2013, Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U. in 40th EPS Conference on Plasma Physics, EPS 2013. 40th EPS Conference on Plasma Physics, EPS 2013, vol. 1, European Physical Society (EPS), pp. 13-16, 40th EPS Conference on Plasma Physics, EPS 2013, Espoo, Finland, 7/1/13.

Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U. / Raman, R.; Jarboe, T. R.; Jardin, S. C. et al.
40th EPS Conference on Plasma Physics, EPS 2013. European Physical Society (EPS), 2013. p. 13-16 (40th EPS Conference on Plasma Physics, EPS 2013; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U

AU - Raman, R.

AU - Jarboe, T. R.

AU - Jardin, S. C.

AU - Kessel, C. E.

AU - Mueller, D.

AU - Nelson, B. A.

AU - Poli, F.

AU - Gerhardt, S. P.

AU - Kaye, S. M.

AU - Menard, J. E.

AU - Ono, M.

AU - Soukhanovskii, V. A.

PY - 2013

Y1 - 2013

N2 - Transient Coaxial Helicity Injection (CHI) in NSTX has generated closed flux plasma currents up to 200 kA. When induction from the central solenoid is then added to these discharges they achieved 1 MA of plasma current using 65% of the solenoid flux of standard induction-only discharges. The CHI-initiated discharges have low plasma density and normalized internal plasma inductance of 0.35 through the inductive ramp, typical of advanced scenarios planned for future STs. An important objective of the NSTX-U program is to ramp-up CHI-started discharges non-inductively to the steady-state current sustainment levels. In support of this goal, the Tokamak Simulation Code (TSC) has been used to conduct initial simulations of a full discharge modeling in which a CHI-started discharge is ramped-up in current to 1 MA using a combination neutral beam current drive and bootstrap current overdrive.

AB - Transient Coaxial Helicity Injection (CHI) in NSTX has generated closed flux plasma currents up to 200 kA. When induction from the central solenoid is then added to these discharges they achieved 1 MA of plasma current using 65% of the solenoid flux of standard induction-only discharges. The CHI-initiated discharges have low plasma density and normalized internal plasma inductance of 0.35 through the inductive ramp, typical of advanced scenarios planned for future STs. An important objective of the NSTX-U program is to ramp-up CHI-started discharges non-inductively to the steady-state current sustainment levels. In support of this goal, the Tokamak Simulation Code (TSC) has been used to conduct initial simulations of a full discharge modeling in which a CHI-started discharge is ramped-up in current to 1 MA using a combination neutral beam current drive and bootstrap current overdrive.

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M3 - Conference contribution

AN - SCOPUS:84905640575

SN - 9781632663108

T3 - 40th EPS Conference on Plasma Physics, EPS 2013

SP - 13

EP - 16

BT - 40th EPS Conference on Plasma Physics, EPS 2013

PB - European Physical Society (EPS)

T2 - 40th EPS Conference on Plasma Physics, EPS 2013

Y2 - 1 July 2013 through 5 July 2013

ER -

Non-inductive plasma current start-up in NSTX using transient CHI and subsequent non-inductive current ramp-up scenario in NSTX-U

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