Microwave scattering system design for ρe scale turbulence measurements on NSTX Journal Article uri icon



  • Despite suppression of ρi scale turbulent fluctuations, electron thermal transport remains anomalous in NSTX. For this reason, a microwave scattering system will be deployed to directly observe the ω and k spectra of ρe scale turbulent fluctuations and characterize the effect on electron thermal transport. The scattering system will employ a Gaussian probe beam produced by a high power 280 GHz microwave source. A five-channel heterodyne detection system will measure radial turbulent spectra in the range -kr-=0–20 cm−1. Inboard and outboard launch configurations cover most of the normalized minor radius. Improved spatial localization of measurements is achieved with low aspect ratio and high magnetic shear configurations. This article will address the global design of the scattering system, such as choice of frequency, size, launching system, and detection system.

publication date

  • October 1, 2004

has restriction

  • closed

Date in CU Experts

  • February 19, 2015 2:51 AM

Full Author List

  • Smith DR; Mazzucato E; Munsat T; Park H; Johnson D; Lin L; Domier CW; Johnson M; Luhmann NC

author count

  • 9

Other Profiles

International Standard Serial Number (ISSN)

  • 0034-6748

Electronic International Standard Serial Number (EISSN)

  • 1089-7623

Additional Document Info

start page

  • 3840

end page

  • 3842


  • 75


  • 10