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The new dedicated HAXPES beamline P22 at PETRAIII

Authors :
Patrick Lömker
Ralph Claessen
Gerd Schönhense
C. Wiemann
S. Piec
Katerina Medjanik
W. Drube
Andrei Gloskovskii
Peter Amann
Christoph Schlueter
Michael Sing
Anders Nilsson
I. Sarkar
Christian Schneider
Katrin Ederer
Yu. Matveyev
I. Schostak
Source :
AIP conference proceedings 2054(1), 040010 (2019). doi:10.1063/1.5084611, 13th International Conference on Synchrotron Radiation Instrumentation, SRI2018, Taipei, Taiwan
Publication Year :
2019
Publisher :
AIP Publ., 2019.

Abstract

13th International Conference on Synchrotron Radiation Instrumentation, SRI2018, Taipei, Taiwan; AIP conference proceedings 2054(1), 040010 (2019). doi:10.1063/1.5084611<br />A new undulator beamline (P22) for hard X-ray photoelectron spectroscopy (HAXPES) was built at PETRA III (DESY, Hamburg) to meet the increasing demand for HAXPES-based techniques. It provides four special instruments for high-resolution studies of the electronic and chemical structure of functional nano-materials and catalytic interfaces, with a focus on measurements under operando and/or ambient conditions: (i) a versatile solid-state spectroscopy setup with optional wide-angle lens and in-situ electrical characterization, (ii) a HAXPEEM instrument for sub-µm spectro-microscopy applications, (iii) an ambient pressure system (> 1 bar) for operando studies of catalytic reactions and (iv) a time-of-flight spectrometer as a full-field k-microscope for measurements of the 4D spectral function ρ(EB,k). The X-ray optics were designed to deliver high brightness photon flux within the HAXPES energy range 2.4 – 15 keV. An LN$_2$-cooled double-crystal monochromator with interchangeable pairs of Si(111) and (311) crystals is optionally combined with a double channel-cut post-monochromator to generate X-rays with variable energy bandpass adapted to the needs of the experiment. Additionally, the beam polarization can be varied using a diamond phase plate integrated into the beamline. Adaptive beam focusing is realized by Be compound refractive lenses and/or horizontally deflecting mirrors down to a spot size of ∼20x17 µm$^2$ with a flux of up to 1.1x10$^{13}$ ph/s (for Si(111) at 6 keV).<br />Published by AIP Publ., Melville, NY

Details

Language :
English
Database :
OpenAIRE
Journal :
AIP conference proceedings 2054(1), 040010 (2019). doi:10.1063/1.5084611, 13th International Conference on Synchrotron Radiation Instrumentation, SRI2018, Taipei, Taiwan
Accession number :
edsair.doi.dedup.....1233c151985d2ea24f60e28cfac3c92c
Full Text :
https://doi.org/10.1063/1.5084611