Publications Describing Device
Model B-64 was a figure-eight shaped stellarator operated at Princeton Project Matterhorn (today, PPPL). It was made using 10 cm diameter stainless steel tubes.
It had square corners which made it look like an squared 8, so it was originally named Model B-820. However, since at that point the project was classified, the United States Atomic Energy Commission security office objected to the name claiming that the secret of the figure-eight shape was compromised and the 82 was substituted with a 64.
Model B-64 was the first device to use a divertor, which enabled ion temperatures of 50 eV and electron temperatures of 80 eV, improving on the 10 eV temperatures reached prior the installation of the divertor.
1955 - 1967