Absorbed XFEL Dose in the Components of the LCLS X-Ray Optics

[摘要] There is great concern that the short, intense XFEL pulse of the LCLS will damage the optics that will be placed into the beam. We have analyzed the extent of the problem by considering the anticipated materials and position of the optical components in the beam path, calculated the absorbed dose as a function of photon energy, and compared these doses with the expected doses required (i) to observe rapid degradation due to thermal fatigue, (ii) to reach the melting temperature, or (iii) to actually melt the material. We list the materials that are anticipated to be placed into the Linac Coherent Light Source (LCLS) x-ray free electron laser (XFEL) beam line, their positions, and the absorbed dose, and compare this dose with anticipated damage thresholds.

[发布日期] 2010-12-03

[学科分类] 核物理和高能物理

[关键词] FREE ELECTRON LASERS;LIGHT SOURCES;LINEAR ACCELERATORS;X RADIATION;RADIATION EFFECTS;OPTICS;PHOTONS;RADIATION DOSES XFEL