Harmonium: An Ultrafast Vacuum Ultraviolet Facility

Christopher A. Arrell; Marco Grioni; Marcel Drabbels; Frank van Mourik; Andrew Clark; Gianmarco Gatti; Silvan Roth; Alberto Crepaldi; Luca Longetti; José Ojeda; Majed Chergui

doi:10.2533/chimia.2017.268

CHIMIA (May 2017)

Harmonium: An Ultrafast Vacuum Ultraviolet Facility

Christopher A. Arrell,
Marco Grioni,
Marcel Drabbels,
Frank van Mourik,
Andrew Clark,
Gianmarco Gatti,
Silvan Roth,
Alberto Crepaldi,
Luca Longetti,
José Ojeda,
Majed Chergui

Affiliations

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. [email protected]
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
Journal volume & issue: Vol. 71, no. 5

Abstract

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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.

Published in CHIMIA

ISSN: 0009-4293 (Print); 2673-2424 (Online)
Publisher: Swiss Chemical Society
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: http://chimia.ch

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