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- D.E. Kim, M.-H. Cho, H.S. Han, J.Y. Huang, Y.-G. Jung, H.-G. Lee, W.W. Lee, K.-H. Park, H.S. Suh
PAL, Pohang, Kyungbuk, Republic of Korea
- I.S. Ko
POSTECH, Pohang, Kyungbuk, Republic of Korea
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Pohang Accelerator Laboratory (PAL) is developing 10 GeV, 0.1 nm SASE based FEL for high power, short pulse X-ray coherent photon sources named PAL-XFEL. At the first stage PAL-XFEL needs two undulator lines for photon source. PAL is developing undulator magnetic structure based on EU-XFEL design. The hard X-ray undulator features 7.2 mm min magnetic gap, and 5.0 m magnetic length with maximum effective magnetic field larger than 0.908 T to achieve 0.1nm radiation at 10 GeV electron energy. Soft X-ray undulator system has 8.3 mm undulator gap with 33.4 mm magnetic period. In this report, the status of the undulator project including mechanical design, magnetic design, phase shifter, quadrupole design are summarized.
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