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@inproceedings{scheible:ibic2021-wepp19, author = {B.E.J. Scheible and W. Ackermann and M.K. Czwalinna and H. De Gersem and S. Mattiello and A. Penirschke and H. Schlarb}, % author = {B.E.J. Scheible and W. Ackermann and M.K. Czwalinna and H. De Gersem and S. Mattiello and A. Penirschke and others}, % author = {B.E.J. Scheible and others}, title = {{Bunch Arrival-Time Measurement with Rod-Shaped Pickups on a Printed Circuit Board for X-Ray Free-Electron Lasers}}, booktitle = {Proc. IBIC'21}, pages = {417--421}, eid = {WEPP19}, language = {english}, keywords = {pick-up, FEL, laser, simulation, electron}, venue = {Pohang, Rep. of Korea}, series = {International Beam Instrumentation Conference}, number = {10}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2021}, issn = {2673-5350}, isbn = {978-3-95450-230-1}, doi = {10.18429/JACoW-IBIC2021-WEPP19}, url = {https://jacow.org/ibic2021/papers/wepp19.pdf}, note = {https://doi.org/10.18429/JACoW-IBIC2021-WEPP19}, abstract = {{The all-optical synchronization system implemented in the European X-ray free-electron laser (EuXFEL) is to receive an upgrade. The modifications are intended to allow operation with consistently high accuracy in a 1 pC mode, which is required for various user experiments. The lower charges, e.g. a factor of 20, lead to a reduced signal strength at the pickups and thus to a decreased resolution. A significant potential for improvement has been identified in a modified pickup structure and transmission network, which provide the transient voltage signal to subsequent parts of the synchronization system. One solution for a broadband pickup structure with short signal paths, large active surfaces and minimum aperture diameter could be achieved by connecting rod-shaped pickups to a combination network on a printed circuit board, which will be mounted in the beamline. In this contribution the proposed design is introduced and analyzed by electromagnetic field simulations.}}, }