Moving towards the era of burning fusion plasmas, a better knowledge of the physics of highly energetic particles, such as fusion born alpha particles, becomes essential. Diagnosing the fast ions in a fusion plasma is a challenging task, but the technique of collective Thomson scattering (CTS) provides the possibility of revealing the velocity distribution of the confined fast ions along a given direction – resolved both in time and space. Recently, the ITER baseline design has been expanded to include the enabling of the front end of a fast ion CTS diagnostic system resolving dynamics perpendicular to the magnetic field. The feasibility study and conceptual design of this diagnostic was provided by the CTS group at Risø DTU.
The development of the ITER CTS diagnostic builds on the experiences and expertise gained from the construction and current operation of the CTS diagnostic systems on TEXTOR and ASDEX Upgrade.
This contribution will briefly introduce the technique of CTS, give an overview of the results of the current diagnostic systems at TEXTOR, and present the chosen solution and the status of the design of the ITER CTS diagnostic system.
|Conference||Seminar at National Institute for Fusion Science (NIFS)|
|City||Toki (JP), 26 Oct.|
|Period||01/01/2009 → …|