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TY - CONF AU - Lau, W.K. AU - Chan, C.K. AU - Chang, C.-C. AU - Chang, C.-H. AU - Chang, L.-H. AU - Chao, A. AU - Chen, C.H. AU - Chou, M.C. AU - Chou, P.J. AU - Hsiao, F.Z. AU - Hsu, K.T. AU - Hsueh, H.P. AU - Hu, K.H. AU - Hwang, C.-S. AU - Hwang, J.-Y. AU - Jan, J.C. AU - Kuan, C.K. AU - Lee, A.P. AU - Lin, M.-C. AU - Luo, G.-H. AU - Teng, S.Y. AU - Tsai, K.L. AU - Wu, J. ED - Schaa, Volker R.W. ED - Decking, Winfried ED - Sinn, Harald ED - Geloni, Gianluca ED - Schreiber, Siegfried ED - Marx, Michaela TI - An Updated Design of the NSRRC Seeded VUV Free Electron Laser Test Facility J2 - Proc. of FEL2019, Hamburg, Germany, 26-30 August 2019 CY - Hamburg, Germany T2 - Free Electron Laser Conference T3 - 39 LA - english AB - In this report, we present an updated design of the facility which is a 200 nm seeded, HGHG FEL driven by a 250 MeV high brightness electron linac system with dogleg bunch compressor for generation of ultrashort intense coherent radiation in the vacuum ultraviolet region. It employs a 10-periods helical undulator for enhancement of beam energy modulation and a helical undulator of 20 mm period length as the radiator (i.e. THU20) to produce hundreds of megawatts radiation with wavelength as short as 66.7 nm. An optional planar undulator can be added to generate odd harmonics (e.g. 22.2 nm, 13.3 nm etc.) of the fundamental. The facility layout and expected FEL output performance is reported. PB - JACoW Publishing CP - Geneva, Switzerland SP - 651 EP - 653 KW - undulator KW - laser KW - FEL KW - linac KW - radiation DA - 2019/11 PY - 2019 SN - 978-3-95450-210-3 DO - doi:10.18429/JACoW-FEL2019-THP030 UR - http://jacow.org/fel2019/papers/thp030.pdf ER -