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TY - CONF AU - Decker, F.-J. AU - Bianchini Mattison, C. AU - Bohler, D.K. AU - Brachmann, A. AU - Colocho, W.S. AU - Condamoor, S. AU - Gibbs, M.L. AU - Kim, K.H. AU - Lutman, A.A. AU - Maxwell, T.J. AU - Mock, J.A. AU - Nuhn, H.-D. AU - Sheppard, J.C. AU - Smith, H. AU - Smith, T.J. AU - Stanek, M. AU - Zelazny, S. AU - Zhang, Z. AU - Zimmer, C.M. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Dual Energies in the LCLS Copper Linac J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - For LCLS-II two undulators were installed at SLAC, one for soft and one for hard x-rays. Before the superconducting linac gets turned on the copper linac is providing beams at 120 Hz to these two beam destinations. The 120 Hz can be split in many different ratios between soft and hard via a pulsed magnet. To get an optimized beam for the quite different photon energies the pulsed linac components like modulators and RF can provide many different beam parameters, mainly energies and bunch lengths for the two undulator lines. How this was implemented with timing setups of triggers and finally after the split the necessary matching of the transverse phase space will be discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1570 EP - 1572 KW - linac KW - quadrupole KW - feedback KW - klystron KW - betatron DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-TUPAB083 UR - https://jacow.org/ipac2021/papers/tupab083.pdf ER -