IRIE KOKEN CO., LTD.Designers and manufacturers of Vacuum Bellows,
Vacuum Valves, and Vacuum Equipment
We appreciate your participation.
Date and time: September 8 (Thu) 11:50 - 12:20
B-2
Site: Workshop venue in the VACUUM2016 exhibition hall
Title: “JT-60SA port bellows”
Participation fee: Charge-free, first-come-first-served
Company name: IRIE KOKEN CO., LTD.
JT-60SA is a joint project for early realization of nuclear fusion energy by Japan and Europe in conjunction with the International Thermonuclear Experimental Reactor (ITER) project.
For JT-60SA, a cryostat for cooling is installed in such a way as to enclose a round vacuum vessel that generates high-temperature plasma. Ports connecting the vacuum vessel and cryostat are needed for internal plasma measurement, cooling, and so on. IRIE KOKEN has prepared the ports, with bellows for such reasons as seismic countermeasures, positioning, and other purposes.
It is absolutely necessary to use low-cobalt materials for the port bellows. Since cobalt-59 in stainless steel is activated by capturing neutrons to become cobalt-60, we paid close attention to ensuring the amounts of special low-cobalt materials. We also had to resolve technical issues such as applying both internal pressure and external pressure to the welded bellows and that perpendicular-to-an-axis displacements become large.
