Toward a fourth-generation light source.

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Historically, x-ray research has been propelled by the existence of urgent and compelling scientific questions and the push of powerful and exquisite source technology. These two factors have gone hand in hand since Rontgen discovered x-rays. Here we review the progress being made with existing third-generation synchrotron-radiation light sources and the prospects for a fourth-generation light source with dramatically improved laser-like beam characteristics. The central technology for high-brilliance x-ray beams is the x-ray undulator, a series of alternating-pole magnets situated above and below the particle beam. When the particle beam is oscillated by the alternating magnetic fields, a set of. ... continued below

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10 p.

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Moncton, D. E. May 3, 1999.

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Description

Historically, x-ray research has been propelled by the existence of urgent and compelling scientific questions and the push of powerful and exquisite source technology. These two factors have gone hand in hand since Rontgen discovered x-rays. Here we review the progress being made with existing third-generation synchrotron-radiation light sources and the prospects for a fourth-generation light source with dramatically improved laser-like beam characteristics. The central technology for high-brilliance x-ray beams is the x-ray undulator, a series of alternating-pole magnets situated above and below the particle beam. When the particle beam is oscillated by the alternating magnetic fields, a set of. interacting and interfering wave fronts is produced, which leads to an x-ray beam with extraordinary properties. Third-generation sources of light in the hard x-ray range have been constructed at three principal facilities: the European Synchrotrons Radiation Facility (ESRF) in France; the Super Photon Ring 8-GeV (or Spring-8) in Japan; and the Advanced Photon Source (APS) in the US. Undulator technology is also used on a number of low-energy machines for radiation in the ultraviolet and soft x-ray regimes. At the APS, these devices exceed all of our original expectations for beam brilliance, tunability, spectral range, and operational flexibility. Shown in Fig. 1 are the tuning curves of the first few harmonics, showing x-ray production from a few kV to better than 40 keV. High-brilliance radiation extends to over 100 keV.

Physical Description

10 p.

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INIS; OSTI as DE00011775

Medium: P; Size: 10 pages

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  • Materials in a New Era, Washington, DC (US), 02/16/1999--02/17/1999

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  • Report No.: ANL/OTD-APS/CP-98889
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 11775
  • Archival Resource Key: ark:/67531/metadc618997

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  • May 3, 1999

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  • June 16, 2015, 7:43 a.m.

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  • April 6, 2017, 7 p.m.

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Moncton, D. E. Toward a fourth-generation light source., article, May 3, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc618997/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.