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Title: Infrared Spectro/Microscopy at SSLS -Edge Effect Source in a Compact Superconducting Storage Ring

Abstract

Singapore Synchrotron Light Source (SSLS) is commissioning its new beamline for Infrared Spectro/Microscopy (ISMI). The infrared light is extracted from the edge region of dipole D1 of the compact superconducting electron storage ring Helios 2. The nominal source point is located at half the maximum field, i.e., at 2.25 T. The end station comprises both, a medium and a high resolution Fourier transform infrared spectrometer (FTIR), the former featuring an infrared microscope as well as a UHV chamber for catalysis experiments. Synchrotron Radiation Workshop (SRW) calculations and a preliminary experimental evaluation of ISMI show the capability of this beamline to deliver a bright flux of photons in the Far and Mid infrared spectral regions.

Authors:
; ; ; ; ; ; ;  [1]; ;  [2];  [3]
  1. Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore 117603 (Singapore)
  2. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore)
  3. Institute for Synchrotron Radiation/ANKA, Forschungszentrum Karlsruhe, Postfach 3640, D-76021 Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
21052588
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436133; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ABSORPTION SPECTROSCOPY; BEAM PRODUCTION; COMMISSIONING; DIPOLES; ELECTRONS; FOURIER TRANSFORMATION; INFRARED SPECTRA; LIGHT SOURCES; MICROSCOPY; PHOTON BEAMS; PHOTONS; RESOLUTION; SINGAPORE; STORAGE RINGS; SUPERCONDUCTING MAGNETS; SYNCHROTRON RADIATION; SYNCHROTRONS

Citation Formats

Bahou, Mohammed, Wen Li, Ding Xiande, Casse, B. Didier F., Heussler, Sascha P., Gu Pengda, Diao Caozheng, Moser, Herbert O., Sim, Wee-Sun, Gu, Jin, and Mathis, Yves-Laurent. Infrared Spectro/Microscopy at SSLS -Edge Effect Source in a Compact Superconducting Storage Ring. United States: N. p., 2007. Web. doi:10.1063/1.2436133.
Bahou, Mohammed, Wen Li, Ding Xiande, Casse, B. Didier F., Heussler, Sascha P., Gu Pengda, Diao Caozheng, Moser, Herbert O., Sim, Wee-Sun, Gu, Jin, & Mathis, Yves-Laurent. Infrared Spectro/Microscopy at SSLS -Edge Effect Source in a Compact Superconducting Storage Ring. United States. doi:10.1063/1.2436133.
Bahou, Mohammed, Wen Li, Ding Xiande, Casse, B. Didier F., Heussler, Sascha P., Gu Pengda, Diao Caozheng, Moser, Herbert O., Sim, Wee-Sun, Gu, Jin, and Mathis, Yves-Laurent. Fri . "Infrared Spectro/Microscopy at SSLS -Edge Effect Source in a Compact Superconducting Storage Ring". United States. doi:10.1063/1.2436133.
@article{osti_21052588,
title = {Infrared Spectro/Microscopy at SSLS -Edge Effect Source in a Compact Superconducting Storage Ring},
author = {Bahou, Mohammed and Wen Li and Ding Xiande and Casse, B. Didier F. and Heussler, Sascha P. and Gu Pengda and Diao Caozheng and Moser, Herbert O. and Sim, Wee-Sun and Gu, Jin and Mathis, Yves-Laurent},
abstractNote = {Singapore Synchrotron Light Source (SSLS) is commissioning its new beamline for Infrared Spectro/Microscopy (ISMI). The infrared light is extracted from the edge region of dipole D1 of the compact superconducting electron storage ring Helios 2. The nominal source point is located at half the maximum field, i.e., at 2.25 T. The end station comprises both, a medium and a high resolution Fourier transform infrared spectrometer (FTIR), the former featuring an infrared microscope as well as a UHV chamber for catalysis experiments. Synchrotron Radiation Workshop (SRW) calculations and a preliminary experimental evaluation of ISMI show the capability of this beamline to deliver a bright flux of photons in the Far and Mid infrared spectral regions.},
doi = {10.1063/1.2436133},
journal = {AIP Conference Proceedings},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}
  • The basic properties of synchrotron radiation are described, the design of storage rings to produce synchrotron radiation is outlined, and the criteria for matching storage ring design to the needs of X-ray lithography are discussed. Simple scaling laws are presented showing the benefits for a storage ring of using the higher fields which superconducting magnets are able to provide. Helios 1 is a compact superconducting storage ring built by Oxford Instruments for installation at the IBM Advanced Lithography Facility (ALF). Design choices for superconducting rings are discussed, and the design and construction of Helios are described. Test results from themore » initial commissioning of Helios at Oxford are presented, but the main data on its performance when installed at ALF are given in another paper in this issue.« less
  • A comprehensive optical design for a high-resolution, high-flux, wide-energy range, micro-focused beamline working in the vacuum ultraviolet and soft x-ray photon energy range is proposed. The beamline is to provide monochromatic radiation to three photoelectron microscopes: a full-field x-ray photoelectron emission microscope and two scanning instruments, one dedicated to angle resolved photoemission spectroscopy ({micro}-ARPES) and one for ambient pressure x-ray photoelectron spectroscopy and scanning photoelectron microscopy (AP-XPS/SPEM). Microfocusing is achieved with state of the art elliptical cylinders, obtaining a spot size of 1 {micro}m for ARPES and 0.5 {micro}m for AP-XPS/SPEM. A detailed ray tracing analysis quantitatively evaluates the overallmore » beamline performances.« less
  • A comprehensive optical design for a high-resolution, high-flux, wide-energy range, micro-focused beamline working in the vacuum ultraviolet and soft x-ray photon energy range is proposed. The beamline is to provide monochromatic radiation to three photoelectron microscopes: a full-field x-ray photoelectron emission microscope and two scanning instruments, one dedicated to angle resolved photoemission spectroscopy ({mu}-ARPES) and one for ambient pressure x-ray photoelectron spectroscopy and scanning photoelectron microscopy (AP-XPS/SPEM). Microfocusing is achieved with state of the art elliptical cylinders, obtaining a spot size of 1 {mu}m for ARPES and 0.5 {mu}m for AP-XPS/SPEM. A detailed ray tracing analysis quantitatively evaluates the overallmore » beamline performances.« less
  • The tolerances of imperfections of superconducting bending magnets in a compact storage ring have been estimated. The storage ring, which is under construction, is a race-tracked type with combined function bending magnets. A tracking code PROVIDENCE,'' which calculates a particle's orbit with a numerical integration of exact equations of motion has been used. The results of calculating dynamic apertures with modelized three-dimensional (3-D) magnetic fields show that multipole errors must be suppressed with (sextupole errors) {le}20(T/m{sup 2}), (octupole errors) {le}110(T/m{sup 3}), where the dynamic aperture is defined as a stable amplitude area with nominal aperture limitation in this paper. Themore » dynamic aperture with actual magnetic fields has been also calculated. The result shows that the superconducting bending magnets have enough good field regions, and that the ring has a sufficient dynamic aperture: {vert bar}{ital x}{vert bar}{congruent}30 mm and {vert bar}{ital y}{vert bar}{congruent}50 mm.« less
  • A compact synchrotron light source, which is composed of an exactly circular electron storage ring, features not only soft x-ray generation but also laser emission as well as hard x-ray generation. An insertion device is not applicable for the exact circular storage ring, since it has no straight section. However an optical resonator installed around the electron orbit functions like an optical undulator. The photon storage ring (PhSR) so named is essentially a free-electron laser. A use of the Compton back scattering enables the PhSR to generate hard x rays. Sizable amount of hard x rays is expected from calculation.