Paper |
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WEPPD065 |
Development of a Laser-based Alignment System Utilizing Fresnel Zone Plates at the KEKB Injector Linac |
2672 |
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- T. Suwada, M. Satoh
KEK, Ibaraki, Japan
- K. Minoshima, S. Telada
AIST, Tsukuba, Japan
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A new laser-based alignment system is under development in order to precisely align accelerator components along an ideal straight line at the 600-m-long KEKB injector linac. A well-known sequential three-point method with Fresnel zone plates and a CCD camera is revisited in the alignment system. The high-precision alignment system is strongly required in order to stably accelerate high-brightness electron and positron beams with high bunch charges and also to keep the beam stability with higher quality towards the Super B-factory at KEK. A new laser optics has been developed and the laser propagation characteristics has been systematically investigated at a 100-m-long straight section in vacuum. In this report, the experimental developments and investigations are reported along with the design of the new laser-based alignment system.
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