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Proceedings Paper

Upgrade of the beamline 10.0.1 at the advanced light source
Author(s): Zulfiqar Ali; Yi-De Chuang; David Kilcoyne; Alejandro Aguilar; Sung-Kwan Mo; Zahid Hussain
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Paper Abstract

Beamline 10.0.1 delivers the photons from a 4.5 m long 10 cm periodicity undulator (U100) to various endstations in its three branchlines. The beamline uses a spherical grating monochromator (SGM) to produce high energy resolution photon beam, with three gratings to cover the photon energy range from 17 to 340 eV. Typically, angle-resolved photoemission (ARPES) measurements use 30-70 eV photons. The beam size at the High Energy Resolution Spectroscopy (HERS) endstation, designed for ARPES, is measured to be 250 μm (H) by 100 μm (V). Due to grazing incidence geometry in the HERS endstation, the photon beam will have a large projection on the sample surface which could lead to degradation of experimental resolutions. We are in the process of designing and replacing some of the existing mirrors to improve the focus spot at HERS endstation. The detailed design parameters and possible upgrade paths will be presented with verifications using SHADOW ray-tracing program.

Paper Details

Date Published: 15 October 2012
PDF: 10 pages
Proc. SPIE 8502, Advances in X-Ray/EUV Optics and Components VII, 85020P (15 October 2012); doi: 10.1117/12.930328
Show Author Affiliations
Zulfiqar Ali, Lawrence Berkeley National Lab. (United States)
Optics Labs. (Pakistan)
Yi-De Chuang, Lawrence Berkeley National Lab. (United States)
David Kilcoyne, Lawrence Berkeley National Lab. (United States)
Alejandro Aguilar, Lawrence Berkeley National Lab. (United States)
Sung-Kwan Mo, Lawrence Berkeley National Lab. (United States)
Zahid Hussain, Lawrence Berkeley National Lab. (United States)


Published in SPIE Proceedings Vol. 8502:
Advances in X-Ray/EUV Optics and Components VII
Shunji Goto; Christian Morawe; Ali M. Khounsary, Editor(s)

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