Transport Study of Helias-Heliac Hybrid Stellarator

Masayuki Yokoyama; Yuji Nakamura; Masahiro Wakatani

doi:dx.doi.org/10.13182/FST95-A11947065

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Home / Publications / Journals / Fusion Science and Technology / Volume 27 / Number 3T

Transport Study of Helias-Heliac Hybrid Stellarator

Masayuki Yokoyama, Yuji Nakamura, Masahiro Wakatani

Fusion Science and Technology / Volume 27 / Number 3T / April 1995 / Pages 186-189

Helical Systems / dx.doi.org/10.13182/FST95-A11947065

Published:February 8, 2018

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A new helical axis stellarator called Helias-Heliac Hybrid Stellarator(HHHS) is based on the modulated l = 1 helical coil. In order to obtain Helias-like and Heliac-like configurations, toroidal coils, poloidal coils and an additional l = 1 helical coil are adjusted to control magnetic field spectrum. It is shown that the bumpy field with opposite sign to l = 1 helical field is essential to minimize the neoclassical ripple transport. An HHHS configuration with sufficient magnetic well and reduced neoclassical ripple transport is demonstrated.