CNR ExploRA

Articolo in rivista, 2019, ENG, 10.1016/j.fusengdes.2019.03.072

Enhanced operation of the Eu Ec test facility

Fasel, D.; Alberti, S.; Dubray, J.; Goodman, T.; Hogge, J-P; Minelli, D.; Siravo, U.; Perez, A.; Albajar, F.; Carannante, G.; Sanchez, P.; Sartori, F.; Cavinato, M.; De Frutos, L.

Ecole Polytech Fed Lausanne, SPC, Lausanne, Switzerland; Fus Energy, F4E, Barcelona, Spain; Natl Res Council Italy, Ex Inst Plasma Phys P Caldirola, Milan, Italy; CNR ISTP, Istituto per la Scienza e Tecnologia dei Plasmi, Milano, Italy; GTD, Barcelona, Spain.

A Test Facility (TF) has been designed and installed at SPC to allow for the commissioning of the EU gyrotrons developed in view of their integration to the ITER EC system. The first phase of operation of this TF was dedicated to the development of the EU 2 MW coaxial cavity gyrotron [1,2]. The EU gyrotron development for ITER has been reoriented since then and is presently advancing a 170 GHz/1MW/CW gyrotron developed within the EGYC consortium and manufactured by THALES. At the same time, the TF has been enhanced to host the FALCON project [3], consisting in the integration of a second 170 GHz/1MW/CW gyrotron delivered by GYCOM. This new experiment is aiming to test the main RF components of the EC Transmission Line (TL) and of the Upper Launcher system to be installed on ITER. This paper describes the technical modifications brought to the existing TF to comply with the requirements of both 1 MW gyrotrons operation. Effort has been put in switching of the auxiliaries from one tower to the other within a short time ( < 1 week) while maintaining operator safety and equipment protection. A detailed description of the additional implementation and of the strategy followed to share the main auxiliaries (like the HVPS, the cooling system, the control system, etc.) will be presented. Moreover, most of the new equipment, such as the control hardware, have been designed to fulfil ITER site standards. Finally, the preliminary operation results with this reconfigured TF will be presented.

Fusion engineering and design 146 , pp. 1942–1946