MO3B1
SLAC, Menlo Park, California, USA
ANL, Lemont, Illinois, USA
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MO3B1 |
Obtaining Picosecond X-ray Pulses on 4th Generation Synchrotron Light Sources | |
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| Through the 2-frequency crab cavity scheme, fourth generation storage ring light sources offer a unique opportunity to produce intense short X-ray pulses that are ideal for time-resolved user experiments. The short pulses and the high brightness photon beams are simultaneously available at all beamlines in a fully compatible operation mode. Owing to the small momentum compaction factor characteristic in fourth generation storage rings, the vertical emittance contribution due to the coupling between the longitudinal and transverse planes by the crab cavities is greatly reduced, which allows reaching short pulse duration with little constraint on the betatron tunes. We propose to use half-integer aharmonic cavity to simultaneously produce bunch lengthening and shortening in the bunch train to facilitate compatible operation of the normal and short-pulse beams. A concrete case study based on the Advanced Photon Source Upgrade (APS-U) lattice is used to demonstrate the system configuration, requirements, and beam performances. | ||
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Slides MO3B1 [1.817 MB] | |
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