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Title: Advanced Photon Source Status Report

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1395846
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: ICFA Beam Dynamics Newsletter; Journal Volume: 70; Journal Issue: May 2017
Country of Publication:
United States
Language:
English

Citation Formats

Sajaev, V., Borland, M., Emery, L., Harkay, K., Ivanyushenkov, Y., Lindberg, R., Sereno, N., Xiao, A., and Zholents, A. Advanced Photon Source Status Report. United States: N. p., 2017. Web.
Sajaev, V., Borland, M., Emery, L., Harkay, K., Ivanyushenkov, Y., Lindberg, R., Sereno, N., Xiao, A., & Zholents, A. Advanced Photon Source Status Report. United States.
Sajaev, V., Borland, M., Emery, L., Harkay, K., Ivanyushenkov, Y., Lindberg, R., Sereno, N., Xiao, A., and Zholents, A. 2017. "Advanced Photon Source Status Report". United States. doi:.
@article{osti_1395846,
title = {Advanced Photon Source Status Report},
author = {Sajaev, V. and Borland, M. and Emery, L. and Harkay, K. and Ivanyushenkov, Y. and Lindberg, R. and Sereno, N. and Xiao, A. and Zholents, A.},
abstractNote = {},
doi = {},
journal = {ICFA Beam Dynamics Newsletter},
number = May 2017,
volume = 70,
place = {United States},
year = 2017,
month = 5
}
  • The Advanced Photon Source at Argonne National Laboratory is a third-generation light source optimized for production of high-brilliance undulator radiation in the hard x-ray portion of the spectrum. A user community representing all major centers of synchrotron research, including universities, industry, and federal laboratories, will utilize these x-ray beams for investigations across a diverse range of disciplines. All technical facilities and components required for operations have been completed and installed, and are well along in the commissioning process. Major design goals and Department of Energy milestones have been met or exceeded. Project funds have been maximized to construct a numbermore » of beamline components and user facilities over and above those called for in the original project scope. Research teams preparing experimental apparatus at the Advanced Photon Source have procured strong funding support. {copyright} {ital 1996 American Institute of Physics.}« less
  • Interest in the 0.5 to 3 keV, intermediate x-ray, energy region has recently intensified as this spectral region covers, among others, the important {ital L} and {ital M} edges of transition-metal and rare-earth magnetic materials, respectively. Third-generation synchrotron facilities with their inherent high brightness have the unique potential to cover this energy region with high-resolution, high-flux x-ray beams ideal for spectroscopic studies. A 5.5-cm-period, planar undulator to be installed on the 7-GeV Advanced Photon Source will produce a high brightness source of intermediate-energy x rays. The 0.5- to 3-keV spectroscopy beamline is based on the spherical grating monochromator design thatmore » has already been shown to yield high resolution and throughput in the soft-x-ray region, below 1 keV. The beamline has been designed to cover the entire region with a peak resolving power of 6000--10 000. Photon flux at the sample is calculated to be in the range from 10{sup 11} to 10{sup 13} photons/s into a spot size of 1 mm{sup 2}. A refocusing mirror will be used to further demagnify the image size at a second experimental station. As a second phase to the spectroscopy program, an elliptically polarized insertion device will be used. The polarization preserving nature of the grazing incidence optical elements in the SGM is crucial to obtain x rays of well-defined polarization. The beamline layout, together with calculations of resolution, throughput, power loading, and high harmonic suppression, will be presented. The photoemission experimental end stations for the spectroscopy station will also be briefly described. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.« less
  • We present the planned photon diagnostics beamlines at the Advanced Photon Source. The photon diagnostics beamlines of the storage ring include two bending magnet sources and a dedicated diagnostic undulator. The bending magnet lines will employ the conventional UV/visible imaging techniques (resolution {sigma}{congruent}40 {mu}m) and the x-ray pinhole camera (resolution {sigma}{congruent}15 {mu}m) for the measurement of the positron beam size (design value: {sigma}{congruent}100 {mu}m). The opening angle of the undulator radiation will be around {sigma}{congruent}3 {mu}rad for its first harmonic (23.2--25.8 keV), and {sigma}{congruent}1.7 {mu}rad for its third harmonic (70--72 keV), providing a good resolution for measuring the positron beammore » divergence size (design values: {sigma}{congruent}9 {mu}rad for 10% vertical coupling and 3 {mu}rad for 1% coupling). The undulator and its x-ray optics are specifically optimized for full emittance measurement of the positron beam. A major developmental effort will be in the area of detecting very fast phenomena (nanosecond and sub-nanosecond) in particle dynamics. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.« less
  • The Advanced Photon Source (APS), presently being commissioned, will produce x rays of unprecedented brightness. The high energy ring of the APS is a 7 GeV positron storage ring, 1104 m in circumference designed to operate at less than 10{sup {minus}9} Torr with 300 mA of beam and a greater than 10 h lifetime. The storage ring vacuum chamber is constructed from an extruded 6063 aluminum alloy. During the construction phase, a 2.34-m-long section of the APS extruded aluminum chamber was set up on National Synchrotron Light Source (NSLS) X-ray Beamline X28A and photon stimulated desorption (PSD) was measured. Cleaningmore » and preparation of the chamber was identical to that of the APS construction. In addition to the chamber, small samples of Al, Be, and Cu were also exposed to white light having a critical energy of 5 keV. In addition to PSD, measurements were made of the specular and diffuse scattering of photons. The chamber and samples were each exposed to a dose greater than 10{sup 23} photons per m. Desorption yields for H{sub 2}, CO, CO{sub 2}, CH{sub 4}, and H{sub 2}O are reported as a function of accumulated flux, critical energy, incidence angle, and preparation. These results are compared with previous results for aluminum on NSLS Beamline U10B and PSD results of other laboratories published for aluminum. {copyright} {ital 1996 American Vacuum Society}« less
  • Since high-energy photons ({approx_gt}50 keV) are well suited for certain types of x-ray scattering experiments, we present calculated results for the Advanced Photon Source (APS) Undulator A and APS Wiggler A at high energies. The undulator calculations include the effect of magnetic field errors, which is to smear the high-order spectral harmonics. At their anticipated initial minimum gap settings, Undulator A should perform better than Wiggler A from the point of view of most high energy experiments up to at least {approximately}280 keV. A comparison of APS insertion devices to high energy insertion devices in other synchrotron radiation laboratories ismore » also provided. {copyright} {ital 1996 American Institute of Physics.}« less