We recently proposed a basic concept for design and layout of the undulator source for a dedicated bio-imaging beamline at the European XFEL. The goal of the optimized scheme proposed here is to enable experimental simplification and performance improvement. The core of the scheme is composed by soft and hard X-ray self-seeding setups. Based on the use of an improved design for both monochromators it is possible to increase the design electron energy up to 17.5 GeV in photon energy range between 2 keV and 13 keV, which is the most preferable for life science experiments. An advantage of operating at such high electron energy is the increase of the X-ray output peak power. Another advantage is that 17.5 GeV is the preferred operation energy for SASE1 and SASE2 beamline users. Since it will be necessary to run all the XFEL lines at the same electron energy, this choice will reduce the interference with other undulator lines and increase the total amount of scheduled beam time. In this work we also propose a study of the performance of the self-seeding scheme accounting for spatiotemporal coupling caused by the use of a single crystal monochromator. Our analysis indicates that this distortion is easily suppressed by the right choice of diamond crystal planes and that the proposed undulator source yields about the same performance as in the case for a X-ray seed pulse with no coupling. Simulations show that the FEL power reaches 2 TW in the 3 keV - 5 keV photon energy range, which is the most preferable for single biomolecule imaging.
Learning Electron Bunch Distribution along a FEL Beamline by Normalising Flows
Helmholtz Zentrum Dresden-Rossendorf（亥姆霍兹德累斯顿罗森多夫研究中心）；Synchrotron SOLEIL（SOLEIL同步辐射光源）；Center for Advanced Systems Understanding（高级系统理解中心）；Technische Universität Dresden（德累斯顿工业大学）
Staged Laser Wakefield Acceleration for Saturated Lasing of Bandwidth-Tunable Free-Electron Lasers from EUV to X-ray
Tsinghua University（清华大学）；Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）；Beijing Academy of Quantum Information Science（北京量子信息科学研究院）；University of Chinese Academy of Sciences（中国科学院大学）
Extension of self-seeding scheme with single crystal monochromator to lower energy < 5 keV as a way to generate multi-TW scale pulses at the European XFEL
Perspectives of Imaging of Single Protein Molecules with the Present Design of the European XFEL. - Part I - X-ray Source, Beamlime Optics and Instrument Simulations
Relative and absolute dosimetric commissioning of the ELIMAIA--ELIMED laser-driven proton beamline at 23.4 MeV
Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud（意大利国家核物理研究所南方实验室）；Centro Siciliano di Fisica Nucleare e Struttura della Materia（西西里核物理与物质结构中心）；The Extreme Light Infrastructure ERIC（极光大基础设施欧洲研究联盟）；Extreme Light Infrastructure - Nuclear Physics (ELI-NP)（极光大基础设施-核物理（ELI-NP））；Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH)（霍里亚·胡利贝伊物理与核工程研发国家研究所）
