5 research outputs found
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National Synchrotron Light Source
A general description is given of the NSLS. Topics covered include: storage ring characteristics; experimental facilities; experimental research; general user proposals; expansion of the NSLS; and transportation to the facility. (GHT
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Infra-red line IR4 at the NSLS
The authors describe the infra-red beam line which is being constructed at the NSLS. In order to maintain the high brightness at long wavelengths (up to 1 mm) where diffraction becomes a problem, a high aperture extraction port is used. Problems of cooling of the first mirror will also be discussed. Large off axis ellipsoids are used to bring the beam to a secondary focus on a mezzanine floor before entering a monochromator or being collimated for an interferometer
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The NSLS VUV undulator: Spectral characteristics and operating experience
The design and operating characteristics of the VUV undulator installed on the NSLS VUV ring are presented. Specifically, the spectral output through three circular on-axis pinholes of different diameters has been measured. Near the minimum magnetic gap (40mm), the flux into a 0.25 mrad circular aperture at the peak of the fundamental (h..nu.. = 57 eV) is approx.1 /times/ 10/sup 14/ photonssec0.1A1%BW. We find good agreement in spectral shape between these measured spectra and spectra calculated by integrating the theoretical undulator emission spectrum over the relevant spatial variables and including electron beam emittance. We also show calculated zero-emittance and on-axis flux spectra for comparison. A description is given of the beam line and monochromator currently installed on this undulator for the purpose of performing spin-resolved photoemission