Magnetic fusion energy plasma diagnostic needs novel THz BWOs

• Published in: 2015 IEEE International Vacuum Electronics Conference (IVEC) pp. 1 - 2
• Main Authors: Paoloni, Claudio, Jinjun Feng, Ye Tang, Mengchao Gao, Fuzhi Zhang, Lingna Yue, Xiaopin Tang, Letizia, Rosa, Mineo, Mauro, Malekabadi, Ali, Luhmann, Neville C., Popovic, Branko, Himes, Logan, Barchfeld, Robert, Gamzina, Diana
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-04-2015
• Subjects: BWO; double corrugated waveguide; double staggered grating; Electron beams; Fabrication; Gratings; Optical waveguides; plasma diagnostic; Plasma diagnostics; Power generation; terahertz
• ISBN: 9781479971091; 147997109X
• DOI: 10.1109/IVEC.2015.7223764

The development of collective scattering diagnostics is essential for understanding of the anomalous transport attributed to short scale length microturbulence which poses a threat to the development of nuclear fusion reactors. Signals in the sub-THz range (0.1 - 0.8 THz) with adequate power are required to probe the plasma. A joint international effort is therefore devoted to the design and realization of novel backward wave oscillators at 0.346 THz and above with output power in the 1 Watt range to replace the bulky, high maintenance optically pumped FIR lasers so far utilized for this plasma diagnostic.