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arXiv · 1911.04573

Double-Slit Interferometer Measurements at SPEAR3

Chunlei Li·Mark Boland·Jeff Corbett·Matan Grinberg·Toshiyuki Mitsuhashi·Yahong Xu·Wenjun Zhang
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Abstract

The resolution of a conventional telescope used to image visible-light synchrotron radiation is often limited by diffraction effects. To improve resolution, the double-slit interferometer method was developed at KEK and has since become popular around the world. Based on the Van Cittert-Zernike theorem relating transverse source profile to transverse spatial coherence, the particle beam size can be inferred by recording fringe contrast as a function of interferometer slit separation. In this paper, we describe the SPEAR3 double-slit interferometer, develop a theoretical framework for the interferometer and provide experimental results. Of note the double-slit system is 'rotated' about the beam axis to map the dependence of photon beam coherence on angle.

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Chunlei Li, Mark Boland, Jeff Corbett, Matan Grinberg, Toshiyuki Mitsuhashi, Yahong Xu, Wenjun Zhang. 2019-11-11. Double-Slit Interferometer Measurements at SPEAR3. https://doi.org/10.18429/jacow-ipac2016-mopmr054

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