Efficient generation of closed magnetic flux surfaces in a large spherical tokamak using coaxial helicity injection

TY - JOUR

T1 - Efficient generation of closed magnetic flux surfaces in a large spherical tokamak using coaxial helicity injection

AU - Raman, R.

AU - Nelson, B. A.

AU - Bell, M. G.

AU - Jarboe, T. R.

AU - Mueller, D.

AU - Bigelow, T.

AU - Leblanc, B.

AU - Maqueda, R.

AU - Ono, M.

AU - Wilson, R.

PY - 2006

Y1 - 2006

N2 - A method of coaxial helicity injection has successfully produced a closed flux current without the use of the central solenoid in the NSTX device, on a size scale closer to a spherical torus reactor, for a proof-of-principle demonstration of this concept. For the first time, a remarkable 60 times current multiplication factor was achieved. Grad-Shafranov plasma equilibrium reconstructions are used to verify the existence of closed flux current. In some discharges the generated current persists for a surprisingly long time ∼400ms.

AB - A method of coaxial helicity injection has successfully produced a closed flux current without the use of the central solenoid in the NSTX device, on a size scale closer to a spherical torus reactor, for a proof-of-principle demonstration of this concept. For the first time, a remarkable 60 times current multiplication factor was achieved. Grad-Shafranov plasma equilibrium reconstructions are used to verify the existence of closed flux current. In some discharges the generated current persists for a surprisingly long time ∼400ms.

UR - https://www.scopus.com/pages/publications/33750454456

UR - https://www.scopus.com/pages/publications/33750454456#tab=citedBy

U2 - 10.1103/PhysRevLett.97.175002

DO - 10.1103/PhysRevLett.97.175002

M3 - Article

C2 - 17155478

SN - 0031-9007

VL - 97

JO - Physical review letters

JF - Physical review letters

IS - 17

M1 - 175002

ER -