Session RP1 - Poster Session VIII.
POSTER session, Thursday afternoon, October 30
Fran Hill Southeast Exhibit Hall, ACC
The three dimensional MHD equilibrium code HINT, which does not assume the existence of nested magnetic surfaces, is modified to extend functions and usabilities. Possibility of a Large Helical Device equilibrium with a zero rotational transform surface is exmined by HINT. The rotational transform profile is assumed to be controlled by amount of a net toroidal current. In the equilibrium, we find existence of the equilibrium but formation of two n=0 islands composing the homoclinic-type structure near the center, where n is a toroidal mode number. As further increase of beta, three n=0 island structure is formed, while the homoclinic-type nature is retained. A maximum in the Shafranov shift is observed as the increase in the amount of the net current.