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.
| H-1 heliac | |
| Type: | Stellarator |
| City: | Canberra |
| Country: | Australia |
| Operation Start Year: | 1992 |
| Operation End Year: | 2022 |
| Ongoing: | no |
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.