2017-09-06

Bunch trains in the Linac Coherent Light Source

Dr. Karl Bane, SLAC National Accelerator Laboratory, USA

11 Sep 2017, 16:30–18:00; Location: S2|17-103

The Linac Coherent Light Source is a linac-based, X-ray free electron laser (FEL) at the SLAC National Accelerator Laboratory. It accelerates single bunches up to 4­--13 GeV before sending them to the undulator for lasing. A project is underway to run the LCLS bunches in trains, with up to initially four and later eight bunches in a train. Bunch trains will allow the users to perform pump-pump-probe experiments.

However, running bunch trains in the linacs of the LCLS can excite transverse wakefields, resulting in the beam break-up instability and projected emittance growth. In this talk we estimate the severity of the problem and investigate mitigation methods.

Category: CE Seminar

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