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ERL working modes

ERL working modes. Georg Hoffstaetter, Professor Cornell University / CLASSE / SRF group & ERL effort. High Current mode High Coherence mode High Buch charge mode HGHG FEL mode ? SASE FEL mode ? XFEL-O mode ?. Beam goals for ERLs. Hard x-rays: 5GeV, competitive current: up to 100mA

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ERL working modes

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  1. ERL working modes Georg Hoffstaetter, ProfessorCornell University / CLASSE / SRF group & ERL effort • High Current mode • High Coherence mode • High Buch charge mode • HGHG FEL mode ? • SASE FEL mode ? • XFEL-O mode ?

  2. Beam goals for ERLs

  3. Hard x-rays: 5GeV, competitive current: up to 100mA low charge per bunch low emittance Working modes: current, emittances, energy spread, bunch length A) 100mA, 30/30pm, 2.e-4, 2ps B) 25mA, 8/ 8pm, 2.e-4, 2ps C) 25mA, 300/10pm, 2.e-3, 1ps in South, 100fs in North beamlines D) The option of large bunch charge (1nC) with low repetition rate (100kHz), without energy recovery, is not used for x-ray users. up to 1nC is used for accelerator studies, e.g. of XFELO or HGHG FELs Electron Beam Parameters Energy spread at beam stop 300pm 24% 12% 0 100fs -12%

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