Mechanical Design of the NSTX High-k Scattering Diagnostic

Feder R, Mazzucato E, Munsat T, Park H, Smith DR, Ellis R, Labik G, Priniski C

Princeton University. Plasma Physics Laboratory.

关键词: Nstx;    70 Plasma Physics And Fusion Technology;    Waveguides Nstx;    Armor;    High-K Scattering;   

RP-ID  :  PPPL-4106
RP-ID  :  DE-AC02-76CH03073
RP-ID  :  899516

美国|英语

来源: UNT Digital Library

【 摘 要 】

The NSTX High-k Scattering Diagnostic measures small-scale density fluctuations by the heterodyne detection of waves scattered from a millimeter wave probe beam at 280 GHz and {lambda}=1.07 mm. To enable this measurement, major alterations were made to the NSTX vacuum vessel and Neutral Beam armor. Close collaboration between the PPPL physics and engineering staff resulted in a flexible system with steerable launch and detection optics that can position the scattering volume either near the magnetic axis ({rho} {approx} .1) or near the edge ({rho} {approx} .8). 150 feet of carefully aligned corrugated waveguide was installed for injection of the probe beam and collection of the scattered signal in to the detection electronics.