Melting of W/Cu flat type component for main limiter and its impact on plasma operation in EAST experiments
Chuannan Xuan,
Dahuan Zhu,
Binfu Gao
et al.
Abstract:A type of actively cooled W/Cu flat-type component with high heat exhaust capacity was installed as limiter during the EAST spring plasma campaign in 2022, aiming to support the long pulse operation. Unfortunately, severe melting phenomena with obvious droplets ejection of the flat-type W/Cu limiter was repeatedly monitored by CCD and IR cameras, which not only induced the failure of component but also seriously influenced plasma operation. The high temperature around midplane of W/Cu flat-type main limiter is… Show more
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