Joanny M, Salasca S, Dapena M, Cantone B, Travère J M, Thellier C, Fermé J J, Marot L, Buravand O, Perrollaz G, Zeile C
CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France.
Rev Sci Instrum. 2012 Oct;83(10):10E506. doi: 10.1063/1.4731004.
ITER first mirrors (FMs), as the first components of most ITER optical diagnostics, will be exposed to high plasma radiation flux and neutron load. To reduce the FMs heating and optical surface deformation induced during ITER operation, the use of relevant materials and cooling system are foreseen. The calculations led on different materials and FMs designs and geometries (100 mm and 200 mm) show that the use of CuCrZr and TZM, and a complex integrated cooling system can limit efficiently the FMs heating and reduce their optical surface deformation under plasma radiation flux and neutron load. These investigations were used to evaluate, for the ITER equatorial port visible∕infrared wide angle viewing system, the impact of the FMs properties change during operation on the instrument main optical performances. The results obtained are presented and discussed.
国际热核聚变实验堆（ITER）的第一反射镜（FMs）作为ITER大多数光学诊断的首个部件，将暴露于高等离子体辐射通量和中子负载之下。为减少ITER运行期间引起的第一反射镜发热及光学表面变形，预计会使用相关材料和冷却系统。对不同材料以及100毫米和200毫米的第一反射镜设计与几何形状进行的计算表明，使用铜铬锆合金（CuCrZr）和钼钛锆合金（TZM）以及复杂的集成冷却系统，能够在等离子体辐射通量和中子负载条件下有效限制第一反射镜的发热，并减少其光学表面变形。这些研究用于评估ITER赤道端口可见/红外广角观察系统运行期间第一反射镜特性变化对仪器主要光学性能的影响。给出并讨论了所获得的结果。
