Non-inductive current drive scenarios for steady state operation of an ITER HARD option

Conference · Wed Sep 25 00:00:00 EDT 1991

OSTI ID:5071563

Fenstermacher, M; Nevins, W; Bulmer, R; Lindquist, W; Parker, J; Smith, G ^[1]; Copper, W; Wells, R ^[2]; Ehst, D ^[3]

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1. Lawrence Livermore National Lab., CA (United States)
2. Lawrence Berkeley Lab., CA (United States)
3. Argonne National Lab., IL (United States)

The requirements for steady state operation of a High Aspect Ratio Design (HARD) option for ITER using noninductive current driven by Neutral Beam (NB) injection, Lower Hybrid (LH) slow waves, and Fast Waves (FW) have been examined. For the higher field (B{sub T} = 7.1 T) and moderate density ( = 1.1 {times} 10{sup 20} m{sup {minus}3}) in this HARD steady state operating point, NB injection provides the optimal current drive subject to the constraints of minimizing the total input power and achieving a high plasma internal inductance (1{sub i} = 0.75; i.e. a peaked current drive profile). An alternate scenario uses FW current drive in the plasma core combined with LH waves in the outer plasma regions in place of the neutral beams, with approximately 30% higher power requirement. Finally, Electron Cyclotron (EC) resonance current drive is used in either scenario to provide localized perturbation of the current profile at the q = 2 surface for disruption stabilization. 7 refs., 5 figs., 1 tab.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5071563
• Report Number(s): UCRL-JC-108485; CONF-910968-26; ON: DE92002165; TRN: 91-031413
• Resource Relation: Conference: 14. IEEE symposium on fusion engineering, San Diego, CA (United States), 30 Sep - 3 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ITER TOKAMAK
NON-INDUCTIVE CURRENT DRIVE
ASPECT RATIO
BEAM INJECTION HEATING
LOWER HYBRID HEATING
OPERATION
PLASMA DISRUPTION
CLOSED PLASMA DEVICES
HEATING
HIGH-FREQUENCY HEATING
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production