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000639324 1001_ $$0P:(DE-H253)PIP1006618$$aBarbanotti, Serena$$b0$$eCorresponding author$$udesy
000639324 1112_ $$aThe 22nd International Conference on RF Superconductivity$$cHamburg$$d2025-09-21 - 2025-09-26$$wDE
000639324 245__ $$aThe Path to High Duty Cycle at EuXFEL - Cryomodule developments
000639324 260__ $$c2025
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000639324 520__ $$aThe European XFEL is in operation since 2017 with a maximum energy of 17.5 GeV in short-pulse (SP) mode, consisting of 0.65-ms long bunch trains at 10 Hz repetition rate. The accelerator can deliver up to 2700 electron bunches every 100 ms, with a spacing between bunches of 220 ns.After eight years of successful operation the accelerator team, with strong support from the XFEL strategy process, is working to define an accelerator upgrade scenario for possible implementation in the next decade.The main goal of the upgrade is to facilitate more bunches per second with larger bunch spacing while maintaining the high energy of the beam, a world record amongst FEL machines. Possible scenarios include continuous-wave (CW) and long-pulse operating modes, collectively referred to as high duty cycle (HDC).This paper describes the different operating modes un-der investigation and the R&D activities ongoing at DESY to support the upgrade. The main focus of the pa-per is on the cryomodule and cavity design modifications, while also giving a brief introduction of the other challenging aspects connected to the upgrade.
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000639324 7001_ $$0P:(DE-H253)PIP1001358$$aWalker, Nicholas John$$b1$$udesy
000639324 7001_ $$0P:(DE-H253)PIP1014945$$aBranlard, Julien$$b2$$udesy
000639324 7001_ $$0P:(DE-H253)PIP1006596$$aSteder, Lea$$b3$$udesy
000639324 7001_ $$0P:(DE-H253)PIP1001641$$aReschke, Detlef$$b4$$udesy
000639324 7001_ $$0P:(DE-H253)PIP1002378$$aJensch, Kay$$b5$$udesy
000639324 7001_ $$0P:(DE-H253)PIP1005320$$aSchnautz, Tobias$$b6$$udesy
000639324 7001_ $$0P:(DE-H253)PIP1003054$$aWeise, Hans$$b7$$udesy
000639324 7001_ $$0P:(DE-H253)PIP1002197$$aKostin, Denis$$b8$$udesy
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000639324 9141_ $$y2025
000639324 9201_ $$0I:(DE-H253)MKS1-20210408$$kMKS1$$lKryogenik$$x0
000639324 9201_ $$0I:(DE-H253)MSL-20170609$$kMSL$$lSupraleitende Beschleuniger Technologie$$x1
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