论文信息 - HOM STUDIES OF THE CORNELL ERL MAIN LINAC CAVITY: HTC-1 THROUGH HTC-3

HOM STUDIES OF THE CORNELL ERL MAIN LINAC CAVITY: HTC-1 THROUGH HTC-3

The Cornell energy recovery linac is designed to run a high energy (5 GeV), high current (100 mA), very low emittance beam (30 pm at 77 pC bunch charge). A major challenge to running such a large current continuously through the machine is the effect of strong higher-order modes (HOMs) that can lead to beam breakup. This paper presents the results of HOM studies for the prototype 7-cell cavity installed in a horizontal test cryomodule (HTC) from initial RF test, to being fully outfitted with side-mounted input coupler and beam line absorbers. We compare the simulated results of the optimized cavity geometry with measurements from all three HTC experiments, showing strong HOM damping in the completed HTC.

Ralf Eichhorn | N.R.A.Valles | Matthias Liepe | Georg Hoffstaetter

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