Double corrugated waveguide 0.346 THz BWO with wide beam channel

An international consortium including the University of California, Davis (UC Davis), Beijing Vacuum Electronics Research Institute (BVERI), and Lancaster University is involved in the design and fabrication of 0.346 THz BWOs to replace the bulky FIR laser at the plasma diagnostic at the NSTX-U fusion device. The use of a highly energetic beam in a wide channel double corrugated waveguide has been found to improve the performance at the Watt level and facilitate the alignment and the assembly.