Details

Autor(en) / Beteiligte

• Fontana, M.
• Challis, C.D.
• Conway, N.J.
• Felton, R.
• Goodyear, A.
• Hogben, C.
• Peacock, A.
• Schmuck, S.

Titel

Real-time applications of Electron Cyclotron Emission interferometry for disruption avoidance during the plasma current ramp-up phase at JET

Ist Teil von

• Fusion engineering and design, 2020-12, Vol.161, p.111934, Article 111934

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •First real-time applications for ECE interferometry in tokamaks•Applications in electron temperature profile hollowness monitoring•Tested in high-performance scenarios in preparation for deuterium-tritium campaign on JET Data produced by an electron cyclotron interferometer diagnostic are now available to the real-time control systems of of the joint European torus (JET) tokamak. The data consist of absolutely calibrated electron temperature profiles, covering the plasma low-field side, core and part of the high-field side, for most of the range of magnetic fields used at JET. The profiles are obtained without the need for real-time equilibrium reconstructions. A simple and robust metric for the peakedness of the profiles was defined and employed in a real-time control system. The main goal was to identify discharges at risk of disruption, after impurity accumulation in the core, and terminate them safely. This was successfully tested on the current ramp-up phase of hybrid plasmas, developed in support of high-performance scenarios for the upcoming deuterium-tritium JET campaign.