Verification of Background Noise Estimation Method in W-Band Millimeter-Wave Back-Scattering System
Millimeter-wave back-scattering (BS) system is a diagnostics system capable of measuring electron-scale turbulence, which is expected to have a large influence on future burning plasma confinement. The measured frequency band overlaps that of the electron cyclotron emission (ECE), resulting in comparable background noise. We have developed a method to estimate this background noise by implementing linear regression between the BS signal intensity and that of the ECE when the probing beam is turned off, and have verified the method in LHD experiments.
Authors
- D. Nishimura (ORCID: https://orcid.org/0000-0002-8302-8986)
- R. Yanai (ORCID: https://orcid.org/0000-0002-4501-1956)
- T. Tokuzawa
- T. Nasu (ORCID: https://orcid.org/0000-0002-9172-7381)
Institutions
- National Institutes of Natural Sciences (JP)
- The Graduate University for Advanced Studies, SOKENDAI (JP)
- National Institute for Fusion Science (JP)
- Fusion (United States) (US)
- Fusion Academy (US)
Publication Details
- Journal
- Plasma and Fusion Research
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1585/pfr.20.1202056
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 0.00