Performance of JT-60SA divertor Thomson scattering diagnostics
- Nagoya University, Nagoya 464-8603 (Japan)
- Japan Atomic Energy Agency, Naka, Ibaraki 801-1 (Japan)
- Genesia Co., Mitaka, Tokyo 181-0013 (Japan)
For the satellite tokamak JT-60 Super Advanced (JT-60SA), a divertor Thomson scattering measurement system is planning to be installed. In this study, we improved the design of the collection optics based on the previous one, in which it was found that the solid angle of the collection optics became very small, mainly because of poor accessibility to the measurement region. By improvement, the solid angle was increased by up to approximately five times. To accurately assess the measurement performance, background noise was assessed using the plasma parameters in two typical discharges in JT-60SA calculated from the SONIC code. Moreover, the influence of the reflection of bremsstrahlung radiation by the wall is simulated by using a ray tracing simulation. The errors in the temperature and the density are assessed based on the simulation results for three typical field of views.
- OSTI ID:
- 22482741
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 86; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
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