title: 3D visualization of XFEL beam focusing properties using LiF crystal X-ray detector.
abstract: Here, we report, that by means of direct irradiation of lithium fluoride a (LiF) crystal, in situ 3D visualization of the SACLA XFEL focused beam profile along the propagation direction is realized, including propagation inside photoluminescence solid matter. High sensitivity and large dynamic range of the LiF crystal detector allowed measurements of the intensity distribution of the beam at distances far from the best focus as well as near the best focus and evaluation of XFEL source size and beam quality factor M(2). Our measurements also support the theoretical prediction that for X-ray photons with energies ~10 keV the radius of the generated photoelectron cloud within the LiF crystal reaches about 600 nm before thermalization. The proposed method has a spatial resolution ~0.4-2.0 μm for photons with energies 6-14 keV and potentially could be used in a single shot mode for optimization of different focusing systems developed at XFEL and synchrotron facilities.
authors.affiliation: PPC and GSE Osaka University, Suita, Osaka 565-0871, Japan.|Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Pikuz
authors.affiliation: Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.|Institute for Academic Initiatives, Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Anatoly
authors.initials: A
authors.lastname: Faenov
authors.affiliation: Institute for Academic Initiatives, Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Matsuoka
authors.affiliation: Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Matsuyama
authors.affiliation: Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.|Center for Ultra-Precision Science and Technology, Graduate School of Engineering, Osaka University, Suita, Osaka 565-1871, Japan.
authors.forename: Kazuto
authors.initials: K
authors.lastname: Yamauchi
authors.affiliation: PPC and GSE Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Norimasa
authors.initials: N
authors.lastname: Ozaki
authors.affiliation: PPC and GSE Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Bruno
authors.initials: B
authors.lastname: Albertazzi
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Inubushi
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan.|RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.
authors.forename: Makina
authors.initials: M
authors.lastname: Yabashi
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan.
authors.forename: Kensuke
authors.initials: K
authors.lastname: Tono
authors.affiliation: Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Yuya
authors.initials: Y
authors.lastname: Sato
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan.
authors.forename: Hirokatsu
authors.initials: H
authors.lastname: Yumoto
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan.|RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Ohashi
authors.affiliation: Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.
authors.forename: Sergei
authors.initials: S
authors.lastname: Pikuz
authors.affiliation: Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia.
authors.forename: Alexei N
authors.initials: AN
authors.lastname: Grum-Grzhimailo
authors.affiliation: Quantum Beam Science Center, Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215, Japan.
authors.forename: Masaharu
authors.initials: M
authors.lastname: Nishikino
authors.affiliation: Quantum Beam Science Center, Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Kawachi
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan.|RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Ishikawa
authors.affiliation: PPC and GSE Osaka University, Suita, Osaka 565-0871, Japan.|Institute for Academic Initiatives, Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Kodama