Harmonium: An Ultrafast Vacuum Ultraviolet Facility

Authors

  • Christopher A. Arrell Laboratory of Ultrafast Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ISIC Station 6 Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland. christopher.arrell@epfl.ch
  • Marco Grioni Laboratory for Electron Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ICMP, Station 3 EPFL, CH-1015 Lausanne, Switzerland
  • Marcel Drabbels Laboratory for Molecular Nanodynamics and Lausanne Centre for Ultrafast Science (LACUS) ISIC, Station 6 EPFL, CH-1015 Lausanne, Switzerland
  • Frank van Mourik Laboratory of Ultrafast Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ISIC Station 6 Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland
  • Andrew Clark Laboratory for Molecular Nanodynamics and Lausanne Centre for Ultrafast Science (LACUS) ISIC, Station 6 EPFL, CH-1015 Lausanne, Switzerland
  • Gianmarco Gatti Laboratory for Electron Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ICMP, Station 3 EPFL, CH-1015 Lausanne, Switzerland
  • Silvan Roth Laboratory for Electron Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ICMP, Station 3 EPFL, CH-1015 Lausanne, Switzerland
  • Alberto Crepaldi Laboratory for Electron Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ICMP, Station 3 EPFL, CH-1015 Lausanne, Switzerland
  • Luca Longetti Laboratory of Ultrafast Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ISIC Station 6 Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland
  • José Ojeda Laboratory of Ultrafast Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ISIC Station 6 Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland
  • Majed Chergui Laboratory of Ultrafast Spectroscopy and Lausanne Centre for Ultrafast Science (LACUS) ISIC Station 6 Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland

DOI:

https://doi.org/10.2533/chimia.2017.268

Keywords:

Photoelectron spectroscopy, Photoion spectroscopy, Ultrafast science

Abstract

Harmonium is a vacuum ultraviolet (VUV) photon source built within the Lausanne Centre for Ultrafast Science (LACUS). Utilising high harmonic generation, photons from 20–110 eV are available to conduct steady-state or ultrafast photoelectron and photoion spectroscopies (PES and PIS). A pulse preserving monochromator provides either high energy resolution (70 meV) or high temporal resolution (40 fs). Three endstations have been commissioned for: a) PES of liquids; b) angular resolved PES (ARPES) of solids and; c) coincidence PES and PIS of gas phase molecules or clusters. The source has several key advantages: high repetition rate (up to 15 kHz) and high photon flux (1011 photons per second at 38 eV). The capabilities of the facility complement the Swiss ultrafast and X-ray community (SwissFEL, SLS, NCCR MUST, etc.) helping to maintain Switzerland's leading role in ultrafast science in the world.
CHIMIA Vol. 71 No. 05(2017): The Lausanne Centre for Ultrafast Science (LACUS)

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Published

2017-05-31

Issue

Vol. 71 No. 5 (2017): The Lausanne Centre for Ultrafast Science (LACUS)

Section

Scientific Articles

License

Copyright (c) 2017 Swiss Chemical Society

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite

[1]
C. A. Arrell, M. Grioni, M. Drabbels, F. van Mourik, A. Clark, G. Gatti, S. Roth, A. Crepaldi, L. Longetti, J. Ojeda, M. Chergui, Chimia 2017, 71, 268, DOI: 10.2533/chimia.2017.268.