
TY  - JOUR
A1  - Davidson, MG 
A1  - Dewar, RL 
A1  - Gardner, HJ 
A1  - Howard, J 
T1  - Hamiltonian Maps for Heliac Magnetic Islands
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1995
VL  - 48
IS  - 5
SP  - 871
EP  - 886
KW  - 
UR  - https://doi.org/10.1071/PH950871 
N2  - Magnetic islands in toroidal heliac stellarator vacuum fields are explored with Hamiltonian chaos theory and the associated area-preserving maps. Magnetic field line island chains are examined first analytically, with perturbation theory, and then numerically to produce Poincar&#233; sections, which are compared with H&#8722;1 Heliac stellarator puncture plot diagrams. Rotational transform profiles are chosen to permit the comparison of twist map and nontwist map predictions with field line behaviour computed by a field line tracing computer program and observed experimentally. 
ER  -

