Close-up of Realta's direct energy converter assembly prototype. (Photo: Realta, with credit to Dmitry Yakovlev and Tucker Peterson of UW-Madison and Ty Omark of Realta)
Realta Fusion announced it has achieved direct energy conversion at the Wisconsin HTS Axisymmetric Mirror (WHAM), powering a lightbulb using electricity extracted from charged particles emitted by the plasma.
This process, called direct energy conversion (DEC), was theorized by Richard Post, a physicist at Lawrence Livermore National Laboratory, and has been demonstrated experimentally a few times, the earliest being the “Venetian blind” converter in the 1970s.
Elliot Claveau, honorary fellow in the UW–Madison Department of Physics and experimental scientist at Realta Fusion, raises his arms in celebration of achieving a plasma in WHAM at the Wisconsin Plasma Physics Laboratory. The device is seen on the floor of the lab. (Photo: Bryce Richter/UW–Madison)
The magnetic mirror fusion concept dates to the early 1950s, but decades ago it was sidelined by technical difficulties and researchers turned to tokamak fusion in their quest for confinement. Now it’s getting another look—with significantly more powerful technology—through WHAM, the Wisconsin HTS Axisymmetric Mirror, an experiment in partnership between startup Realta Fusion and the University of Wisconsin–Madison.