Endstation Description
The reaction microscope (REMI) at the Shanghai soft x-ray free electron laser (SXFEL) for AMO science consists of a supersonic gas injection system, a spectrometer, and detectors with a data acquisition system. The pump-probe scheme will be provided with the synchronization of the external optical laser to the XFEL pulse. An Even-Lavie type high temperature pulsed valve will be implemented to further extend from gas sample to liquid or even biomolecules in solid states which is easily evaporated by heating. By measuring the time of flight and impact positions of ions and electrons on their corresponding detector, three-dimensional momentum vectors can be reconstructed in a coincidence manner. Momentum resolutions of ions and electrons with 0.11 a.u. can be achieved.
Specifications
Parameters | Seeding branch | SASE branch |
Photon Energy Range | 50-600 eV | 100-1000 eV |
Photon Energy Resolution | ~0.01% | ~0.2% |
Focus spot size (FWHM) | <10x10 μm2 (EM)@ 400 eV | <3x3 μm2 (KB) |
Pulse Energy | ~26 μJ@400 eV | ~140 μJ@620 eV |
Photon Pulse Duration | ~50 fs | ~120 fs |
Repetition Rate | 1-50 Hz | 1-50 Hz |
Polarization | Circular, Horizontal | Horizontal |
Optical Laser | Normally 800 nm, and can be required with varying power, repetition rate, and pulse duration | |
Primary Techniques | Multi-particle reaction microscope Optical pump / X-ray probe | |
Momentum range | ~200 a.u. (ions) ~3.5 a.u. (electrons) | |
Momentum resolution | 1% (ions) 1% (electrons) | |
Samples | Gaseous phase atoms and small molecules, atomic clusters; | |
AMO International Advisory Panel [15]
Prof. Dajun Ding (Jilin Univ., China) dajund@jlu.edu.cn
Prof. Kiyoshi Ueda (Tohoku Univ., Japan) kiyoshi.ueda@tohoku.ac.jp
Prof. James Cryan (PULSE Institute, SLAC National Accelerator Laboratory, USA) jcryan@slac.stanford.edu
Prof. Jon Marangos (Imperial College London, UK) j.marangos@imperial.ac.uk
Prof. Christoph Bostedt (Paul Scherrer Institute (PSI); Ecole Polytechnique Federale de Lausanne, Switzerland) christoph.bostedt@psi.ch
Prof. Hans Jakob Wörner (ETH Zürich, Switzerland) hansjakob.woerner@phys.chem.ethz.ch
Prof. Michael Meyer (EuXFEL, Germany) michael.meyer@xfel.eu
Prof. Till Jahnke (EuXFEL; Goethe-Universität Frankfurt, Germany) jahnke@atom.uni-frankfurt.de
Prof. Sang-kil Son (The Center for Free-Electron Laser Science (CFEL), Germany) sangkil.son@cfel.de
Prof. Carlo Callegari (FERMI, Italy) carlo.callegari@elettra.eu
Prof. Jan-Erik Rubensson (Uppsala University, Sweden) jan-erik.rubensson@physics.uu.se
Prof. Maria-Novella Piancastelli (Sorbonne Université, France; Uppsala University, Sweden) maria-novella.piancastelli@physics.uu.se
Prof. Philippe Wernet (Uppsala University, Sweden) philippe.wernet@physics.uu.se
Prof. Fernando Martín García (Universidad Autónoma de Madrid, Spain) fernando.martin@uam.es
Prof. Ken-ichi Ishikawa (Univ. Tokyo, Japan) ishiken@n.t.u-tokyo.ac.jp
COLTRIMS Instrument Team
Yuhai Jiang
jiangyh3@shanghaitech.edu.cn
Xincheng Wang
wangxch1@shanghaitech.edu.cn
