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FlexPES : a versatile soft X-ray beamline at MAX IV Laboratory

Preobrajenski, Alexei LU ; Generalov, Alexander LU ; Öhrwall, Gunnar LU orcid ; Tchaplyguine, Maxim LU ; Tarawneh, Hamed LU ; Appelfeller, Stephan LU ; Frampton, Eleanor and Walsh, Noelle LU (2023) In Journal of Synchrotron Radiation 30. p.831-840
Abstract

FlexPES is a soft X-ray beamline on the 1.5 GeV storage ring at MAX IV Laboratory, Sweden, providing horizontally polarized radiation in the 40-1500 eV photon energy range and specializing in high-resolution photoelectron spectroscopy, fast X-ray absorption spectroscopy and electron-ion/ion-ion coincidence techniques. The beamline is split into two branches currently serving three endstations, with a possibility of adding a fourth station at a free port. The refocusing optics provides two focal points on each branch, and enables either focused or defocused beam on the sample. The endstation EA01 at branch A (Surface and Materials Science) is dedicated to surface- and materials-science experiments on solid samples at ultra-high vacuum.... (More)

FlexPES is a soft X-ray beamline on the 1.5 GeV storage ring at MAX IV Laboratory, Sweden, providing horizontally polarized radiation in the 40-1500 eV photon energy range and specializing in high-resolution photoelectron spectroscopy, fast X-ray absorption spectroscopy and electron-ion/ion-ion coincidence techniques. The beamline is split into two branches currently serving three endstations, with a possibility of adding a fourth station at a free port. The refocusing optics provides two focal points on each branch, and enables either focused or defocused beam on the sample. The endstation EA01 at branch A (Surface and Materials Science) is dedicated to surface- and materials-science experiments on solid samples at ultra-high vacuum. It is well suited not only to all flavours of photoelectron spectroscopy but also to fast (down to sub-minute) high-resolution X-ray absorption measurements with various detectors. Branch B (Low-Density Matter Science) has the possibility to study gas-phase/liquid samples at elevated pressures. The first endstation of this branch, EB01, is a mobile setup for various ion-ion and electron-ion coincidence techniques. It houses a versatile reaction microscope, which can be used for experiments during single-bunch or multi-bunch delivery. The second endstation, EB02, is based on a rotatable chamber with an electron spectrometer for photoelectron spectroscopy studies on primarily volatile targets, and a number of peripheral setups for sample delivery, such as molecular/cluster beams, metal/semiconductor nanoparticle beams and liquid jets. This station can also be used for non-UHV photoemission studies on solid samples. In this paper, the optical layout and the present performance of the beamline and all its endstations are reported.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
multi-coincidence, NEXAFS, photoelectron spectroscopy, soft X-rays
in
Journal of Synchrotron Radiation
volume
30
pages
10 pages
publisher
International Union of Crystallography
external identifiers
  • pmid:37159290
  • scopus:85164271687
ISSN
0909-0495
DOI
10.1107/S1600577523003429
language
English
LU publication?
yes
id
ef45db95-3ac7-4e0e-8e94-2e69bc2db1c0
date added to LUP
2023-09-19 10:33:19
date last changed
2024-04-19 01:04:57
@article{ef45db95-3ac7-4e0e-8e94-2e69bc2db1c0,
  abstract     = {{<p>FlexPES is a soft X-ray beamline on the 1.5 GeV storage ring at MAX IV Laboratory, Sweden, providing horizontally polarized radiation in the 40-1500 eV photon energy range and specializing in high-resolution photoelectron spectroscopy, fast X-ray absorption spectroscopy and electron-ion/ion-ion coincidence techniques. The beamline is split into two branches currently serving three endstations, with a possibility of adding a fourth station at a free port. The refocusing optics provides two focal points on each branch, and enables either focused or defocused beam on the sample. The endstation EA01 at branch A (Surface and Materials Science) is dedicated to surface- and materials-science experiments on solid samples at ultra-high vacuum. It is well suited not only to all flavours of photoelectron spectroscopy but also to fast (down to sub-minute) high-resolution X-ray absorption measurements with various detectors. Branch B (Low-Density Matter Science) has the possibility to study gas-phase/liquid samples at elevated pressures. The first endstation of this branch, EB01, is a mobile setup for various ion-ion and electron-ion coincidence techniques. It houses a versatile reaction microscope, which can be used for experiments during single-bunch or multi-bunch delivery. The second endstation, EB02, is based on a rotatable chamber with an electron spectrometer for photoelectron spectroscopy studies on primarily volatile targets, and a number of peripheral setups for sample delivery, such as molecular/cluster beams, metal/semiconductor nanoparticle beams and liquid jets. This station can also be used for non-UHV photoemission studies on solid samples. In this paper, the optical layout and the present performance of the beamline and all its endstations are reported.</p>}},
  author       = {{Preobrajenski, Alexei and Generalov, Alexander and Öhrwall, Gunnar and Tchaplyguine, Maxim and Tarawneh, Hamed and Appelfeller, Stephan and Frampton, Eleanor and Walsh, Noelle}},
  issn         = {{0909-0495}},
  keywords     = {{multi-coincidence; NEXAFS; photoelectron spectroscopy; soft X-rays}},
  language     = {{eng}},
  pages        = {{831--840}},
  publisher    = {{International Union of Crystallography}},
  series       = {{Journal of Synchrotron Radiation}},
  title        = {{FlexPES : a versatile soft X-ray beamline at MAX IV Laboratory}},
  url          = {{http://dx.doi.org/10.1107/S1600577523003429}},
  doi          = {{10.1107/S1600577523003429}},
  volume       = {{30}},
  year         = {{2023}},
}