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000472699 1001_ $$0P:(DE-H253)PIP1002841$$aBrinker, Frank$$b0$$eCorresponding author
000472699 1112_ $$a12th International Particle Accelerator Conference$$cCampinas$$d2021-05-24 - 2021-05-28$$gIPAC21$$wBrazil
000472699 245__ $$aCorrecting the Magnetic Field Offsets Inside the Undulators of the EuXFEL Using the K-Monochromator
000472699 260__ $$c2021
000472699 3367_ $$033$$2EndNote$$aConference Paper
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000472699 520__ $$aHard X-ray free-electron lasers (XFELs) generate intense coherent X-ray beams by passing electrons through undulators, i.e. very long periodic magnet structures, which extend over hundreds of meters. A crucial condition for the lasing process is the spatial overlap of the electrons with the electromagnetic field. Well-established electron beam-based procedures allow finding a straight trajectory for the electrons defined by the beam position monitors (BPM) between the undulators. A bending of the trajectory in between the BPMs cannot be seen by these methods. A general field offset inside the undulators has the effect that the synchrotron radiation is emitted at a different angle at the beginning and the end of the undulator which can result in a degradation of the FEL-gain especially for very short wavelengths. We report on how the spectral and spatial characteristics of the monochromatized radiation of a single undulator can be used to minimize the field offset in situ with the help of correction coils.
000472699 536__ $$0G:(DE-HGF)POF4-621$$a621 - Accelerator Research and Development (POF4-621)$$cPOF4-621$$fPOF IV$$x0
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000472699 650_7 $$2Other$$aAccelerator Physics
000472699 650_7 $$2Other$$aMC2: Photon Sources and Electron Accelerators
000472699 693__ $$0EXP:(DE-H253)XFEL(machine)-20150101$$1EXP:(DE-H253)XFEL-20150101$$5EXP:(DE-H253)XFEL(machine)-20150101$$aXFEL$$eFacility (machine) XFEL$$x0
000472699 7001_ $$0P:(DE-H253)PIP1086297$$aCasalbuoni, Sara$$b1
000472699 7001_ $$0P:(DE-H253)PIP1011921$$aFreund, Wolfgang$$b2
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000472699 9141_ $$y2021
000472699 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1002841$$aDeutsches Elektronen-Synchrotron$$b0$$kDESY
000472699 9101_ $$0I:(DE-588)1043621512$$6P:(DE-H253)PIP1086297$$aEuropean XFEL$$b1$$kXFEL.EU
000472699 9101_ $$0I:(DE-588)1043621512$$6P:(DE-H253)PIP1011921$$aEuropean XFEL$$b2$$kXFEL.EU
000472699 9131_ $$0G:(DE-HGF)POF4-621$$1G:(DE-HGF)POF4-620$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lMatter and Technologies$$vAccelerator Research and Development$$x0
000472699 9201_ $$0I:(DE-H253)MIN-20120731$$kMIN$$lInjektion$$x0
000472699 9201_ $$0I:(DE-H253)XFEL_DO_ID_UND-20210408$$kXFEL_DO_ID_UND$$lUndulator Systems$$x1
000472699 9201_ $$0I:(DE-H253)XFEL_DO_ID_XPD-20210408$$kXFEL_DO_ID_XPD$$lX-Ray Photon Diagnostics$$x2
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