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  Neumann, A.; Anders, W.; Knobloch, J.; Riemann, B.; Weis, T.; Brackebusch, K.; Flisgen, T.; Galek, T.; Papke, K.; van Rienen, U.: Results and Performance Simulations of the Main Linac Design for BERLinPro. In: LINAC 2012, XXVI Linear Accelerator Conference, Tel Aviv, Israel, September 9-14, 2012Tel Aviv, 2012. - ISBN 978-3-95450-122-9, p. 333-336

Open Access Version

Abstract:
The Berlin Energy Recovery Linac Project (BERLinPro) is designed to develop and demonstrate CW LINAC technology for 100-mA-class ERLs. High-current operation requires an effective damping of higher ordermodes (HOMs) of the 1.3 GHz main linac cavities. We have studied elliptical seven cell cavities damped by five waveguides at the adjacent beam tubes. Eigenmode calculations for geometrical figures of merit show that the present design should allow successful cw linac operation at the maximum beam current of 100 mA / 77pC bunch charge. In this paper the progress in HOM calculations to avoid beam-breakup instabilities for the favored cavity structure is presented.