Bibliographic Details
| Title: |
Ray-tracing Analysis for Cross-polarization Scattering Diagnostic on MAST-Upgrade Spherical Tokamak |
| Authors: |
Hong, R., Rhodes, T. L., Wang, G., Peebles, W. A. |
| Source: |
Rev Sci Instrum 92, 063505 (2021) |
| Publication Year: |
2021 |
| Collection: |
Physics (Other) |
| Subject Terms: |
Physics - Plasma Physics |
| More Details: |
A combined Doppler backscattering/cross-polarization scattering (DBS/CPS) system is being deployed on MAST-U, for simultaneous measurements of local density turbulence, turbulence flows, and magnetic turbulence. In this design, CPS shares the probing beam with the DBS and uses a separate parallel-viewing receiver system. In this study, we utilize a modified GENRAY 3D ray-tracing code, to simulate the propagation of the probing and scattered beams. The contributions of different scattering locations along the entire beam trajectories are considered, and the corresponding local $\tilde{\mathbf{B}}$ wavenumbers are estimated using the wave-vector matching criterion. The wavenumber ranges of the local $\tilde{\mathbf{B}}$ that is detectable to the CPS system are explored for simulated L- and H-mode plasmas. |
| Document Type: |
Working Paper |
| DOI: |
10.1063/5.0043600 |
| Access URL: |
http://arxiv.org/abs/2105.09818 |
| Accession Number: |
edsarx.2105.09818 |
| Database: |
arXiv |
