The H-1NF (or H-1 Australian Plasma Fusion Research Facility) was a research institute of the H-1 heliac, a large stellarator device located in the ANU Research School of Physics at Canberra, Australia.[1][2] It was established when the H-1 heliac was promoted to a national facility in 1996, adopting H-1NF as its facility name ("H-1" from the stellarator and "NF" for National Facility).[3] In 2022 the H-1 heliac was disassembled before being shipped to its new home in China.
Device type | Stellarator |
---|---|
Location | Canberra, Australia |
Technical specifications | |
Major radius | 1.0 m (3 ft 3 in) |
Minor radius | 0.2 m (7.9 in) |
Magnetic field | 0.5 T (5,000 G) |
History | |
Year(s) of operation | 1992–2022 |
The H-1 flexible Heliac is a three field-period helical axis stellarator. Optimisation of the H-1 power supplies for low current ripple allows precise control of the ratio of secondary (helical, vertical) coil to primary (poloidal, toroidal) coil currents, resulting in a finely tunable magnetic geometry. Slight variation in the current ratio between shots (plasma discharges) in a sequence corresponds to a high resolution parameter scan through magnetic configurations (i.e.: rotational transform profile, magnetic well). The programmable control system allows for repetition rates of around 30 shots per hour, limited by data acquisition time and magnet cooling time.