中国紧凑型聚变能实验装置首个关键部件成功落座|欧美性69式xxxx护士
中新社合肥10月1日电 (记者 吴兰)直径约18米、高度约5米，总重量400余吨……10月1日，位于安徽合肥的紧凑型聚变能实验装置(BEST)主机系统中最重的部件，也是中国国内聚变领域最大的真空部件——杜瓦底座成功落座，精准落位安装在BEST装置主机大厅内。
作为首个进驻主机大厅的关键部件，杜瓦底座的落位安装标志着BEST项目主体工程建设步入新阶段，部件研制和工程安装开启“加速度”。
杜瓦底座是BEST装置主机的首个真空大部件，设计工况复杂，接口数百余个。该部件承载着BEST装置近七千吨重量支撑和绝热功能，其安装精度直接关系到整个工程的稳定性和安全性。
据介绍，杜瓦底座的吊装精度高，表面水平高差需控制在15毫米以内，落位位置偏差不得超过正负2毫米；作业空间极度狭小，底座外边缘与主机坑屏蔽墙的最小间隙不足100毫米。
BEST是燃烧等离子体物理实验装置，采用紧凑高场超导托卡马克技术路线，将首次在国际上验证聚变可在真实燃料环境下实现净输出能量，演示核聚变发电。(完)
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