Model B-1

Model B-1 was the first version of a series of devices built at PPPL under the name "Model-B". Like Model A, this stellarator was made from 5 cm diameter Pyrex tubes in a figure-eight configuration but with a much stronger magnetic field (around 3T). It utilized ultra-high vacuum and the plasma reached 100 eV temperatures using ohmic heating. The magnetic confinement produced with this device was excellent for single particles but it failed to maintain a confined plasma for greater than 10 ms, mainly because of collective plasma behavior and transport.