FEL2012 - List of Authors (Huang, J.Y.)

Paper	Title	Page
MOPD44	Design of Magnets for PAL-XFEL	133
	H.S. Suh, M.-H. Cho, H.S. Han, J.Y. Huang, S.T. Jung, Y.-G. Jung, H.-S. Kang, D.E. Kim, I.S. Ko, H.-G. Lee, T.-Y. Lee, K.-H. Park PAL, Pohang, Kyungbuk, Republic of Korea
	Pohang Accelerator Laboratory (PAL) is starting the X-ray Free Electron Laser of 10 GeV. PAL-XFEL has the hard X-ray and soft X-ray branches. The linac contains dipole magnets, quadrupole magnets and corrector magnets. The kicker magnet followed by the septum magnet is needed to extract the beam from the linac to the soft X-ray undulator line. In this presentation, we describe the design and analysis of the magnets.

THPD27	Status of PAL-XFEL Undulator System	595
	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
	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.

THPD28	Beam Diagnostic Systems for PAL-XFEL	598
	C. Kim, H. J. Choi, J.Y. Choi, J.Y. Huang, H.-S. Kang, D.T. Kim, B.-J. Lee, C.-K. Min PAL, Pohang, Kyungbuk, Republic of Korea
	Funding: Korean Ministry of Education, Science and Technology The XFEL project in Pohang Accelerator Laboratory (PAL) requires low beam-emittance (< 1 μm·rad), ultra-short bunch length (25 μm ~80 fs), high peak current(~3.5 kA), high stability of beam energy (< 0.01%), and measurement and steering of beam trajectory within micrometers (< 2 μm). Therefore, beam diagnostics for SASE XFEL should be, focused on attaining femto-second precision in the measurement of temporal beam parameters, and sub-micrometer precision in beam position measurement. Charge measurement and energy measurement are important as well. In this work, technical concepts regarding the diagnostic monitors will be summarized and present status of them will be described.

Paper

Title

Page

Design of Magnets for PAL-XFEL

133

H.S. Suh, M.-H. Cho, H.S. Han, J.Y. Huang, S.T. Jung, Y.-G. Jung, H.-S. Kang, D.E. Kim, I.S. Ko, H.-G. Lee, T.-Y. Lee, K.-H. Park
PAL, Pohang, Kyungbuk, Republic of Korea

Pohang Accelerator Laboratory (PAL) is starting the X-ray Free Electron Laser of 10 GeV. PAL-XFEL has the hard X-ray and soft X-ray branches. The linac contains dipole magnets, quadrupole magnets and corrector magnets. The kicker magnet followed by the septum magnet is needed to extract the beam from the linac to the soft X-ray undulator line. In this presentation, we describe the design and analysis of the magnets.

THPD27

Status of PAL-XFEL Undulator System

595

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

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.

THPD28

Beam Diagnostic Systems for PAL-XFEL

598

C. Kim, H. J. Choi, J.Y. Choi, J.Y. Huang, H.-S. Kang, D.T. Kim, B.-J. Lee, C.-K. Min
PAL, Pohang, Kyungbuk, Republic of Korea

Funding: Korean Ministry of Education, Science and Technology
The XFEL project in Pohang Accelerator Laboratory (PAL) requires low beam-emittance (< 1 μm·rad), ultra-short bunch length (25 μm ~80 fs), high peak current(~3.5 kA), high stability of beam energy (< 0.01%), and measurement and steering of beam trajectory within micrometers (< 2 μm). Therefore, beam diagnostics for SASE XFEL should be, focused on attaining femto-second precision in the measurement of temporal beam parameters, and sub-micrometer precision in beam position measurement. Charge measurement and energy measurement are important as well. In this work, technical concepts regarding the diagnostic monitors will be summarized and present status of them will be described.