Upgrade of the beamline 10.0.1 at the advanced light source

Zulfiqar Ali; Yi-De Chuang; David Kilcoyne; Alejandro Aguilar; Sung-Kwan Mo; Zahid Hussain

doi:10.1117/12.930328

15 October 2012 Upgrade of the beamline 10.0.1 at the advanced light source

Zulfiqar Ali, Yi-De Chuang, David Kilcoyne, Alejandro Aguilar, Sung-Kwan Mo, Zahid Hussain

Proceedings Volume 8502, Advances in X-Ray/EUV Optics and Components VII; 85020P (2012) https://doi.org/10.1117/12.930328
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

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.

Citation Download Citation

Zulfiqar Ali, Yi-De Chuang, David Kilcoyne, Alejandro Aguilar, Sung-Kwan Mo, and Zahid Hussain "Upgrade of the beamline 10.0.1 at the advanced light source", Proc. SPIE 8502, Advances in X-Ray/EUV Optics and Components VII, 85020P (15 October 2012); https://doi.org/10.1117/12.930328

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