Progress in ITER ECE Diagnostic Design and Integration
ITER Organization Route de Vinon-sur-Verdon CS 90 046, 13067 St. Paul Lez Durance Cedex France
2 ITER-India, Institute for Plasma Research , Bhat Gandhinagar-382 428 India
3 Princeton Plasma Physics Laboratory Princeton NJ 08543 USA
4 Institute for Fusion Studies, University of Texas at Austin , TX 78712 USA
5 Plasma Science and Fusion Center, MIT , Cambridge MA 02139 USA
6 Fircroft France 4 rue du Bailliage 78000 Versailles France
7 Bertin Technologies 155 rue Louis Armand CS 30495, 13593 Aix-en-Provence Cedex 3 France
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Published online: 25 March 2019
The ITER Electron Cyclotron Emission (ECE) diagnostic is progressing towards its Preliminary Design Review (PDR). In parallel, the diagnostic integration in the Equatorial Port is ongoing. Port Integration has to address the structural integrity to withstand various loads, maintenance and the safety aspects of ECE diagnostic. The ITER ECE system includes radial and oblique lines-of-sight. Recently, a successful peer-review of the in-port plug Hot Calibration Source has taken place and its performance and integration feasibility has been demonstrated. Four 45-meter long low-loss transmission lines are designed to transmit mm-wave power in the frequency range of 70- 1000 GHz in both X- and O-mode polarization from the port plug to the ECE instrumentation room in the diagnostic building. Prototype transmission lines are being tested . A prototype polarizing Martin-Puplett type Fourier Transform Spectrometer (FTS) operating in the frequency range 70-1000 GHz, has a fast scanning mechanism and a cryo-cooled dual-channel THz detector system. Its performance has been tested as per ITER requirements. Assessment of the instrumentation and control requirements, functional and non-functional requirements, operation procedures, plant automation are ongoing for the PDR. The current status of the diagnostic, together with integration activities, is presented.
© The Authors, published by EDP Sciences, 2019
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