1
|
Laksman J, Dietrich F, Liu J, Maltezopoulos T, Planas M, Freund W, Gautam R, Kujala N, Francoual S, Grünert J. Development of a photoelectron spectrometer for hard x-ray photon diagnostics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:115111. [PMID: 36461550 DOI: 10.1063/5.0097525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 10/21/2022] [Indexed: 06/17/2023]
Abstract
The development and characterization of an angle-resolved photoelectron spectrometer, based on the electron time-of-flight concept, for hard x-ray photon diagnostics at the European Free-Electron Laser, are described. The instrument is meant to provide users and operators with pulse-resolved, non-invasive spectral distribution diagnostics, which in the hard x-ray regime is a challenge due to the poor cross-section and high kinetic energy of photoelectrons for the available target gases. We report on the performances of this instrument as obtained using hard x-rays at the PETRA III synchrotron at DESY in multibunch mode. Results are compared with electron trajectory simulations. We demonstrate a resolving power of 10 eV at incident photon energies up to at least 20 keV.
Collapse
Affiliation(s)
| | | | - Jia Liu
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Marc Planas
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | | | - Naresh Kujala
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Sonia Francoual
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Jan Grünert
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| |
Collapse
|
2
|
Liu Z, Deng B, Zhang Q, Deng H, Liu B. Design, construction, and offline calibration of ARPolar prototype for SXFEL facility. RADIATION DETECTION TECHNOLOGY AND METHODS 2022. [DOI: 10.1007/s41605-022-00329-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
3
|
De Fanis A, Ilchen M, Achner A, Baumann TM, Boll R, Buck J, Danilevsky C, Esenov S, Erk B, Grychtol P, Hartmann G, Liu J, Mazza T, Montaño J, Music V, Ovcharenko Y, Rennhack N, Rivas D, Rolles D, Schmidt P, Sotoudi Namin H, Scholz F, Viefhaus J, Walter P, Ziółkowski P, Zhang H, Meyer M. High-resolution electron time-of-flight spectrometers for angle-resolved measurements at the SQS Instrument at the European XFEL. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:755-764. [PMID: 35511008 PMCID: PMC9070712 DOI: 10.1107/s1600577522002284] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
A set of electron time-of-flight spectrometers for high-resolution angle-resolved spectroscopy was developed for the Small Quantum Systems (SQS) instrument at the SASE3 soft X-ray branch of the European XFEL. The resolving power of this spectrometer design is demonstrated to exceed 10 000 (E/ΔE), using the well known Ne 1s-13p resonant Auger spectrum measured at a photon energy of 867.11 eV at a third-generation synchrotron radiation source. At the European XFEL, a width of ∼0.5 eV full width at half-maximum for a kinetic energy of 800 eV was demonstrated. It is expected that this linewidth can be reached over a broad range of kinetic energies. An array of these spectrometers, with different angular orientations, is tailored for the Atomic-like Quantum Systems endstation for high-resolution angle-resolved spectroscopy of gaseous samples.
Collapse
Affiliation(s)
| | - Markus Ilchen
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | | | | | - Rebecca Boll
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Jens Buck
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | | | - Sergey Esenov
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Benjamin Erk
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | | | - Gregor Hartmann
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Jia Liu
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Tommaso Mazza
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Valerija Music
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | | | - Nils Rennhack
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Daniel Rivas
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Daniel Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
| | - Philipp Schmidt
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | | | - Frank Scholz
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Jens Viefhaus
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - Peter Walter
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | | | - Haiou Zhang
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Michael Meyer
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| |
Collapse
|
4
|
Impact of Charge Migration and the Angle-Resolved Photoionization Time Delays of the Free and Confined Atom X@C60. ATOMS 2022. [DOI: 10.3390/atoms10020044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The present study is devoted to isolate and study the effect of charge migration on the photoionization from the X@C60. The noble gas atoms, Ar, Kr, and Xe, are confined in the C60 to investigate the impact of charge migration from the entrapped atom to the C60 side. The present work concludes that the confinement oscillations in the photoionization features are amplified due to the charge migration. Further, the angle-resolved, spin average time delay is also investigated in the light of confinement. Features in the time delay due to the charge migration are more amplified relative to those in the cross-section or angular distribution.
Collapse
|
5
|
Liu Z, Deng B, Deng H, Liu B. Numerical study of transverse position monitor and compensation for x-ray polarization diagnosis. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:113104. [PMID: 34852524 DOI: 10.1063/5.0054804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 10/24/2021] [Indexed: 06/13/2023]
Abstract
Diagnosing free electron laser (FEL) polarization is critical for polarization-modulated research such as x-ray FEL diffraction imaging and probing material magnetism. In an electron time-of-flight (eTOF) polarimeter, the flight time and angular distribution of photoelectrons were designed based on x-ray polarimetry for on-site diagnosis. However, the transverse position of x-ray FEL pulses introduces error into the measured photoelectron angular distribution. This work, thus, proposes a method of compensating transverse position jitters for the polarization by the eTOF polarimeter itself without an external x-ray beam-position monitor. A comprehensive numerical model is developed to demonstrate the feasibility of the compensation method, and the results reveal that a spatial resolution of 20 μm and a polarity improved by 0.02 are possible with fully polarized FEL pulses. The impact of FEL pulses and a method to calibrate their linearity are also discussed.
Collapse
Affiliation(s)
- Zipeng Liu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800 Shanghai, China
| | - Bangjie Deng
- School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049 Shaanxi, China
| | - Haixiao Deng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201210 Shanghai, China
| | - Bo Liu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201210 Shanghai, China
| |
Collapse
|
6
|
Walter P, Kamalov A, Gatton A, Driver T, Bhogadi D, Castagna JC, Cheng X, Shi H, Obaid R, Cryan J, Helml W, Ilchen M, Coffee RN. Multi-resolution electron spectrometer array for future free-electron laser experiments. JOURNAL OF SYNCHROTRON RADIATION 2021; 28:1364-1376. [PMID: 34475285 DOI: 10.1107/s1600577521007700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
The design of an angular array of electron time-of-flight (eToF) spectrometers is reported, intended for non-invasive spectral, temporal, and polarization characterization of single shots of high-repetition rate, quasi-continuous, short-wavelength free-electron lasers (FELs) such as the LCLS II at SLAC. This array also enables angle-resolved, high-resolution eToF spectroscopy to address a variety of scientific questions on ultrafast and nonlinear light-matter interactions at FELs. The presented device is specifically designed for the time-resolved atomic, molecular and optical science endstation (TMO) at LCLS II. In its final version, the spectrometer comprises up to 20 eToF spectrometers aligned to collect electrons from the interaction point, which is defined by the intersection of the incoming FEL radiation and a gaseous target. The full composition involves 16 spectrometers forming a circular equiangular array in the plane normal to the X-ray propagation and four spectrometers at 54.7° angle relative to the principle linear X-ray polarization axis with orientations in the forward and backward direction of the light propagation. The spectrometers are capable of independent and minimally chromatic electrostatic lensing and retardation, in order to enable simultaneous angle-resolved photo- and Auger-Meitner electron spectroscopy with high energy resolution. They are designed to ensure an energy resolution of 0.25 eV across an energy window of up to 75 eV, which can be individually centered via the adjustable retardation to cover the full range of electron kinetic energies relevant to soft X-ray methods, 0-2 keV. The full spectrometer array will enable non-invasive and online spectral-polarimetry measurements, polarization-sensitive attoclock spectroscopy for characterizing the full time-energy structure of SASE or seeded LCLS II pulses, and support emerging trends in molecular-frame spectroscopy measurements.
Collapse
Affiliation(s)
- Peter Walter
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Andrei Kamalov
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Averell Gatton
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Taran Driver
- The Stanford PULSE Institute, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Dileep Bhogadi
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Jean Charles Castagna
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Xianchao Cheng
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Hongliang Shi
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Razib Obaid
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - James Cryan
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Wolfram Helml
- Technische Universität Dortmund, Maria-Goeppert-Mayer-Strasse 2, 44227 Dortmund, Germany
| | - Markus Ilchen
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Ryan N Coffee
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| |
Collapse
|
7
|
Multiple Sequential Ionization of Valence n = 4 Shell of Krypton by Intense Femtosecond XUV Pulses. ATOMS 2020. [DOI: 10.3390/atoms8040080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Sequential photoionization of krypton by intense extreme ultraviolet femtosecond pulses is studied theoretically for the photon energies below the 3d excitation threshold. This regime with energetically forbidden Auger decay is characterized by special features, such as time scaling of the level population. The model is based on the solution of rate equations with photoionization cross sections of krypton in different charge and multiplet states determined using R-matrix calculations. Predictions of the ion yields and photoelectron spectra for various photon fluence are presented and discussed.
Collapse
|
8
|
Venzke J, Becker A, Jaron-Becker A. Asymmetries in ionization of atomic superposition states by ultrashort laser pulses. Sci Rep 2020; 10:16164. [PMID: 32999393 PMCID: PMC7527981 DOI: 10.1038/s41598-020-73196-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 09/03/2020] [Indexed: 11/25/2022] Open
Abstract
Progress in ultrafast science allows for probing quantum superposition states with ultrashort laser pulses in the new regime where several linear and nonlinear ionization pathways compete. Interferences of pathways can be observed in the photoelectron angular distribution and in the past they have been analyzed for atoms and molecules in a single quantum state via anisotropy and asymmetry parameters. Those conventional parameters, however, do not provide comprehensive tools for probing superposition states in the emerging research area of bright and ultrashort light sources, such as free-electron lasers and high-order harmonic generation. We propose a new set of generalized asymmetry parameters which are sensitive to interference effects in the photoionization and the interplay of competing pathways as the laser pulse duration is shortened and the laser intensity is increased. The relevance of the parameters is demonstrated using results of state-of-the-art numerical solutions of the time-dependent Schrödinger equation for ionization of helium atom and neon atom.
Collapse
Affiliation(s)
- J Venzke
- JILA and Department of Physics, University of Colorado, Boulder, CO, 80309-0440, USA.
| | - A Becker
- JILA and Department of Physics, University of Colorado, Boulder, CO, 80309-0440, USA
| | - A Jaron-Becker
- JILA and Department of Physics, University of Colorado, Boulder, CO, 80309-0440, USA
| |
Collapse
|
9
|
Photoelectron Angular Distributions of Nonresonant Two-Photon Atomic Ionization Near Nonlinear Cooper Minima. ATOMS 2020. [DOI: 10.3390/atoms8030054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Photoelectron angular distributions of the two-photon ionization of neutral atoms are theoretically investigated. Numerical calculations of two-photon ionization cross sections and asymmetry parameters are carried out within the independent-particle approximation and relativistic second-order perturbation theory. The dependence of the asymmetry parameters on the polarization and energy of the incident light as well as on the angular momentum properties of the ionized electron are investigated. While dynamic variations of the angular distributions at photon energies near intermediate level resonances are expected, we demonstrate that equally strong variations occur near the nonlinear Cooper minimum. The described phenomena is demonstrated on the example of two-photon ionization of magnesium atom.
Collapse
|
10
|
Breakdown of the electric dipole approximation at Cooper minima in direct two-photon ionisation. Sci Rep 2020; 10:3617. [PMID: 32107395 PMCID: PMC7046742 DOI: 10.1038/s41598-020-60206-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 02/06/2020] [Indexed: 11/30/2022] Open
Abstract
We predict breakdown of the electric dipole approximation at nonlinear Cooper minimum in direct two-photon K–shell atomic ionisation by circularly polarised light. According to predictions based on the electric dipole approximation, we expect that tuning the incident photon energy to the Cooper minimum in two-photon ionisation results in pure depletion of one spin projection of the initially bound 1s electrons, and hence, leaves the ionised atom in a fully oriented state. We show that by inclusion of electric quadrupole interaction, dramatic drop of orientation purity is obtained. The low degree of the remaining ion orientation provides a direct access to contributions of the electron-photon interaction beyond the electric dipole approximation in the two-photon ionisation of atoms and molecules. The orientation of the photoions can be experimentally detected either directly by a Stern-Gerlach analyzer, or by means of subsequent Kα fluorescence emission, which has the information about the ion orientation imprinted in the polarisation of the emitted photons.
Collapse
|
11
|
Chen SG, Jiang WC, Grundmann S, Trinter F, Schöffler MS, Jahnke T, Dörner R, Liang H, Wang MX, Peng LY, Gong Q. Photon Momentum Transfer in Single-Photon Double Ionization of Helium. PHYSICAL REVIEW LETTERS 2020; 124:043201. [PMID: 32058761 DOI: 10.1103/physrevlett.124.043201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 11/22/2019] [Indexed: 06/10/2023]
Abstract
We theoretically and experimentally investigate the photon momentum transfer in single-photon double ionization of helium at various large photon energies. We find that the forward shifts of the momenta along the light propagation of the two photoelectrons are roughly proportional to their fraction of the excess energy. The mean value of the forward momentum is about 8/5 of the electron energy divided by the speed of light. This holds for fast and slow electrons despite the fact that the energy sharing is highly asymmetric and the slow electron is known to be ejected by secondary processes of shake off and knockout rather than directly taking its energy from the photon. The biggest deviations from this rule are found for the region of equal energy sharing where the quasifree mechanism dominates double ionization.
Collapse
Affiliation(s)
- Si-Ge Chen
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Wei-Chao Jiang
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - S Grundmann
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - F Trinter
- FS-PETRA-S, Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faraday 4, 14195 Berlin, Germany
| | - M S Schöffler
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - T Jahnke
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - R Dörner
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Hao Liang
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Mu-Xue Wang
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Liang-You Peng
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Nano-optoelectronics Frontier Center of the Ministry of Education and Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
- Beijing Academy of Quantum Information Sciences, Beijing 100193, China
| | - Qihuang Gong
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
- Nano-optoelectronics Frontier Center of the Ministry of Education and Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
- Beijing Academy of Quantum Information Sciences, Beijing 100193, China
| |
Collapse
|
12
|
Hartmann G, Ilchen M, Schmidt P, Küstner-Wetekam C, Ozga C, Scholz F, Buck J, Trinter F, Viefhaus J, Ehresmann A, Schöffler MS, Knie A, Demekhin PV. Recovery of High-Energy Photoelectron Circular Dichroism through Fano Interference. PHYSICAL REVIEW LETTERS 2019; 123:043202. [PMID: 31491235 DOI: 10.1103/physrevlett.123.043202] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Indexed: 06/10/2023]
Abstract
It is commonly accepted that the magnitude of a photoelectron circular dichroism (PECD) is governed by the ability of an outgoing photoelectron wave packet to probe the chiral asymmetry of a molecule. To be able to accumulate this characteristic asymmetry while escaping the chiral ion, photoelectrons need to have relatively small kinetic energies of up to a few tens of electron volts. Here, we demonstrate a substantial PECD for very fast photoelectrons above 500 eV kinetic energy released from methyloxirane by a participator resonant Auger decay of its lowermost O 1s excitation. This effect emerges as a result of the Fano interference between the direct and resonant photoionization pathways, notwithstanding that their individual effects are negligibly small. The resulting dichroic parameter has an anomalous dispersion: It changes its sign across the resonance, which can be considered as an analogue of the Cotton effect in the x-ray regime.
Collapse
Affiliation(s)
- G Hartmann
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - M Ilchen
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Ph Schmidt
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - C Küstner-Wetekam
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - C Ozga
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - F Scholz
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - J Buck
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
- Institut für Experimentelle und Angewandte Physik, Universität Kiel, Leibnizstrasse 19, 24118 Kiel, Germany
| | - F Trinter
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4, 14195 Berlin, Germany
| | - J Viefhaus
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
- Helmholtz-Zentrum Berlin (HZB), Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - A Ehresmann
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - M S Schöffler
- Institut für Kernphysik, J.W. Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
| | - A Knie
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - Ph V Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| |
Collapse
|
13
|
Laksman J, Buck J, Glaser L, Planas M, Dietrich F, Liu J, Maltezopoulos T, Scholz F, Seltmann J, Hartmann G, Ilchen M, Freund W, Kujala N, Viefhaus J, Grünert J. Commissioning of a photoelectron spectrometer for soft X-ray photon diagnostics at the European XFEL. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:1010-1016. [PMID: 31274422 DOI: 10.1107/s1600577519003552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 03/13/2019] [Indexed: 06/09/2023]
Abstract
Commissioning and first operation of an angle-resolved photoelectron spectrometer for non-invasive shot-to-shot diagnostics at the European XFEL soft X-ray beamline are described. The objective with the instrument is to provide the users and operators with reliable pulse-resolved information regarding photon energy and polarization that opens up a variety of applications for novel experiments but also hardware optimization.
Collapse
Affiliation(s)
| | - Jens Buck
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Leif Glaser
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Marc Planas
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Jia Liu
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Frank Scholz
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Jörn Seltmann
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Gregor Hartmann
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Markus Ilchen
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Naresh Kujala
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Jens Viefhaus
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Jan Grünert
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| |
Collapse
|