Design considerations for a fast modulator in a 'crossed undulator'

The first switching of polarization direction is possible by installing two identical helical undulators in series in a same straight section in a storage ring. By setting each undulator in a circular polarization mode in opposite handedness, one can obtain linealy polarized radiation with any required polarization direction depending on the modulator setting between two undulators. This scheme can be used without any major defradation of polarization degree in any low energy low emittance storage ring.

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“…An electromagnetic modulator can be used for the rapid change of phase [4]. Figure 1 is a schematic drawing of the proposed system.…”

Section: Introductionmentioning

confidence: 99%

Crossed elliptical polarization undulator

Sasaki

Schlueter²,

Marks³

Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)

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Rapidly-modulated variable-polarization crossed-undulator source

Green¹,

Kim²,

Trzeciak³

et al.

Conference Record of the 1991 IEEE Particle Accelerator Conference

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The ALS-a high-brightness XUV synchrotron radiation source

Robinson

Schlachter

Conference Record of the 1991 IEEE Particle Accelerator Conference

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The Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory is scheduled to be operational in the spring of 1993 as a U.S. Department of Energy national user facility. The ALS will be a next-generation source of soft x-ray and ultraviolet (XUV) synchrotron radiation. Undulators will provide highbrightness radiation at photon energies from below 10 eV to above 2 keV; wig^ler and bend-magnet radiation will extend the spectral coverage with high fluxes approaching 20 keV. The ALS will support an extensive research program in which XUV radiation is used to study matter in al! its varied gaseous, liquid, and solid forms. The high brightness will open new areas of research from the materials sciences, such as spatially resolved spectroscopy, to the life sciences, such as x-ray microscopy with .element-specific sensitivity. Experimental facilities (insertion devices, beamlines, and end stations) will be developed and operated by participating research teams working with the ALS staff.

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Design considerations for a fast modulator in a 'crossed undulator'

Cited by 3 publications

References 4 publications

Crossed elliptical polarization undulator

Crossed elliptical polarization undulator

Rapidly-modulated variable-polarization crossed-undulator source

The ALS-a high-brightness XUV synchrotron radiation source

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