Optimized undulator to generate low energy photons from medium to high energy accelerators

8th International Particle Accelerator Conference

Chung, Ting-Yi^1 ; Chiu, Mau-Sen^1 ; Luo, Hao-Wen^2 ; Yang, Chin-Kang^1 ; Huang, Jui-Che^1 ; Jan, Jyh-Chyuan^1 ; Hwang, Ching-Shiang^1

National Synchrotron Radiation Research Center, Hsinchu, Taiwan^1

Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan^2

关键词: Beam dynamics;    Bending magnets;    Critical issues;    High energy storage rings;    High-energy accelerator;    Load analysis;    Low energy photons;    Polarization modes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012019/pdf
DOI  :  10.1088/1742-6596/874/1/012019

来源: IOP

【 摘 要 】

While emitting low energy photons from a medium or high energy storage ring, the on-axis heat load on the beam line optics can become a critical issue. In addition, the heat load in the bending magnet chamber, especially in the vertical and circular polarization mode of operation may cause some concern. In this work, we compare the heat loads for the APPLE-II and the Knot-APPLE, both optimized to emit 10 eV photons from the 3 GeV TPS. Under this constraint the heat load analysis, synchrotron radiation performance and features in various polarization modes are presented. Additional consideration is given to beam dynamics effect.