The PF6 superconducting magnet coil is the first lifting and the heaviest magnet coil on ITER, so the lifting accuracy will directly affect the installation of subsequent components. According to the structure status, fiducial distribution and visual conditions of ITER assembly workshop and Tokamak Hall, the simulation measurement analysis was carried out through the load deformation test, lifting trial, coil orientation adjustment, lifting path and precise positioning, therefore the measurement scheme was simplified and the key steps of alignment and metrology were optimized to ensure the progress of ITER TAC1 project. The one-time accurate lifting and landing position of PF6 coil meets the requirement of ±4mm, the measurement uncertainty is 0.66mm, and the ratio of the tolerance and the measurement uncertainty is not less than 5, which meets the ITER standard requirements. 

PF6超导磁体线圈是ITER装置上首个吊装且重量最重的磁体线圈，其吊装精度直接影响后续部件的安装。根据ITER总装厂房和装置大厅的结构状况、基准分布和通视条件等，通过对线圈吊具负载变形测试、吊装测试、线圈方位调整、吊装路径、最终定位等阶段的准直测量过程进行的模拟测量分析，简化了测量方案，优化了准直测量关键步骤，保证了ITER TAC1项目进度。实现了PF6线圈一次性吊装落位精度±4mm的要求，经评估测量不确定度为0.66mm，满足ITER公差与测量不确定度比值不小于5的准则要求。