Observation of Persistent Edge Current Driven by Coaxial Helicity Injection (CHI) | |
Mueller, D. ; Nelson, B.A. ; Hamp, W.T. ; Redd, A.J. ; Jarboe, T.R. ; O' ; Neill, R.G. ; Smith, R.J. | |
Princeton University. Plasma Physics Laboratory. | |
关键词: Stability Spherical Torus; Coaxial Helicity Injection; 70 Plasma Physics And Fusion Technology; Non-Inductive Current Drive; Helicity; | |
DOI : 10.2172/839171 RP-ID : PPPL-4065 RP-ID : AC02-76CH03073 RP-ID : 839171 |
|
美国|英语 | |
来源: UNT Digital Library | |
【 摘 要 】
Coaxial Helicity Injection, CHI, has been used on the National Spherical Torus Experiment (NSTX) [M. Ono et al., Nucl. Fusion 40 (2000) 557], the Helicity Injected Torus (HIT) [B.A. Nelson et al., Phys. Rev. Lett. 72 (1994) 3666] and HIT-II [T.R. Jarboe et al., Phys. Plasmas 5 (1998) 1807] to initiate plasma and to drive up to 400 kA of toroidal current. On HIT-II, CHI initiated discharges have been successfully coupled to ohmic sustainment [R. Raman et al., Phys. Plasmas 11 (2004) 2565]. This paper presents the first results on the use of CHI to demonstrate the persistence of edge current drive in a preestablished single-null diverted inductive discharge. Edge current drive has the potential to improve plasma stability limits [J.E. Menard et al., Nucl. Fusion 37 (1997) 595]. While most current drive methods drive current in the interior of the plasma, CHI is well suited for driving current in the edge plasma.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
839171.pdf | 398KB | download |