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| TUAAU06 |
Status of fs-THz Beam Line Project of the PAL
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204 |
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- H.-S. Kang, S. D. Jang, C. Kim, H.-G. Kim, W. W. Lee, C. D. Park, S. J. Park, Y. J. Park, J. H. Seo, Y. G. Son
PAL, Pohang, Kyungbuk
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A femto-second THz radiation (fs-THz) facility is under construction at the Pohang Accelerator Laboratory (PAL), which is one of the beamline projects of Pohang Light Source (PLS). The facility will use a 60-MeV electron linac, which consists of an S-band photocathode RF gun with 1.6 cell cavity, two S-band accelerating structures, and two chicane-type bunch compressors. To generate intense femto-second THz radiation up to 3 THz, the electron beam with charge of 0.5 nC should be compressed down to below 150 fs. Two kinds of radiator will be prepared for pump-probe experiments for beamline: transition radiation for THz radiation (probe) and Cherenkov radiation for visible radiation (pump). The installation of the accelerator components was completed in April 2008 and the rf conditioning will end by July 2008, and the electron beam test will start in August 2008. In this article, we will present the status of the construction and commissioning of the accelerator as well as the beam dynamics design and its simulation results.
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| TUPPH017 |
In Vacuum Undulator System for PAL-FEL
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271 |
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- D. E. Kim, H. S. Han, C. K. Kim, H.-G. Lee, S. H. Nam, C. D. Park, K.-H. Park, H. S. Suh, Y. G. Young-Gyu
PAL, Pohang, Kyungbuk
- M. Yoon
POSTECH, Pohang, Kyungbuk
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Pohang Accelerator Laboratory (PAL) is planning to develop a 0.1 nm SASE based FEL as a next generation light source. It will be based on the 10 GeV S-band linac with In Vacuum Undulator system. The proposed in vacuum undulator has 22.3 mm magnetic period with 5.0 mm vertical clearance aperture. The magnetic length will be 4014 mm with breaks between undulators for diagnostic and focusing elements. The mechanical and magnetic requirements of the IVUN system are very challenging. In this report, the design issues related to the development of the IVUN with preliminary magnetic design will be presented.
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