The National Spherical Torus Experiment-Upgrade poloidal high-k scattering system pitch angle design modifications
Abstract
A 693 GHz, eight-channel, poloidal high-k (k refers to wavenumber) collective scattering system is under development for the National Spherical Torus Experiment-Upgrade device. It will replace the previous 280 GHz, five-channel, tangential scattering system to study high-k electron density fluctuations, thereby providing a measurement of the kθ-spectrum of both electron temperature gradient and ion temperature gradient modes. A tool is under development to calculate the wavenumber that exists in the presence of strong magnetic pitch angles. We use this tool to motivate a new receiver optical design for significantly improved performance, details of which are presented herein.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 01, 2022
- Source ID
- 10.1063/5.0099912
Entities
People
- B. Stratton
- Calvin Domier
- J. Dannenberg
- J. R. Sirigiri
- N. C. Luhmann Jr.
- X. Liu
- Y Zhu
- Y. Ren
Organizations
- Princeton Plasma Physics Laboratory
- United States Department of Energy
- University of California, Davis