Status of the RFQ linac installation and conditioning of the Linear IFMIF Prototype Accelerator

The Radio Frequency Quadrupole (RFQ) linac and 1.6 MW RF power system of the Linear IFMIF Prototype Accelerator (LIPAc) facility in the International Fusion Energy Research Center (IFERC) in Rokkasho (Japan) has been installed and conditioned. During the assembly and tuning process, the RFQ cavity w...

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Detalles Bibliográficos
Autores: Shinya, T., Fagotti, E., Antoniazzi, L., Akagi, T., Bellan, L., Bortolato, D., Ebisawa, T., Grespan, F., Hirata, Y., Ichimiya, R., Kasugai, K., Kondo, K., Kitano, T., Kirpitchev, I., Mereu, P., Mendez, P., de la Morena, C., Maebara, S., Montis, M., Palmieri, A., Pisent, A., Pruneri, G., Regidor, D., Sakamoto, K., Scantamburlo, F., Sugimoto, M., Cara, P., Gex, D., Heidinger, R., Jokinen, A., Marqueta, A., Moya, I., Knaster, J.
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT)
Repositorio:Docu-menta. Repositorio Institucional del CIEMAT
Idioma:inglés
OAI Identifier:oai:dnet:documenta___::3e8604a3cf96ed79694e594afacb60c5
Acceso en línea:https://hdl.handle.net/20.500.14855/5610
Access Level:acceso abierto
Descripción
Sumario:The Radio Frequency Quadrupole (RFQ) linac and 1.6 MW RF power system of the Linear IFMIF Prototype Accelerator (LIPAc) facility in the International Fusion Energy Research Center (IFERC) in Rokkasho (Japan) has been installed and conditioned. During the assembly and tuning process, the RFQ cavity was protected with a temporary tent from the potential deterioration of performance caused by dust. The vacuum in the cavity was improved through the 100 °C baking process of the cavity. The high power test of the 175 MHz RF systems up to 200 kW in CW for each of the eight RF chains was performed for checking its stable output reproducibility in Japan, before connecting 9–3/16 inch coaxial transmission lines from the RF chains to the RF input couplers of the cavity. It was confirmed that the eight RF chains provided the balanced RF power to the single RFQ cavity inphase using a feedback loop and a synchronization system. The peak power in the cavity achieved 150 kW in the pulsed mode, which corresponds approximately to the required electric field to accelerate proton beam. Such RF conditioning process is ongoing to achieve 600 kW approximately required for deuteron beam commissioning planned in 2018.

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