May 25 – June2, FAT of the fourth Russian Gyrotron set for the ITER machine was carried out at the GYCOM Ltd. in Nizhny Novgorod. As with the three previously manufactured Gyrotrons, the tests showed that the device fully complies with the specifications of the ITER Organization, which means that the official recognition that the Gyrotron can be delivered to the construction site of the future machine.

This year it was the first time that the tests were conducted remotely, due to COVID-19 pandemic. FAT was attended by videoconference by ITER Russia and IO representatives.

Director of GYCOM Ltd. Nizhny Novgorod Branch Evgeny Tai claimed that “the Gyrotron set that has just passed FAT was manufactured and preliminarily tested in November 2019. It should be noted that the acceptance of our devices stably proceeds with great confidence in us. These tests were planned for August-September 2020, but since the preliminary tests showed high reliability, we requested the IO to conduct the final tests in June. The positive results obtained give us a time frame for testing the fifth delivery set”.

The design of a Gyrotron as a microwave generator was first introduced in 1960s. Soviet physicists and engineers of the Institute of Applied Physics and GYCOM Ltd. made a huge contribution to the development of these devices. As for today, Russia remains a recognized world leader in their fabrication.

All in all, the ITER machine requires 24 Gyrotrons. Eight devices are to be manufactured in Russia according to the Procurement Arrangement of 2012 between the IO and the Russian ITER Domestic Agency. ITER Gyrotrons are unique in their parameters – 170 GHz frequency at 1 MW power and 1000 sec. pulse.

Delivery of the first pair of the Russian Gyrotrons along with the control desk to the IO is scheduled for mid-2021.

 

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