[en] The injector for the Advanced Photon Source (APS) consists of a 200-MeV electron linac, a 450-MeV position linac, a positron accumulator ring (PAR). and a 7-GeV synchrotron. The purpose of the PAR is to accumulate, and damp positrons from the 60Hz linac during each cycle of the 2Hz synchrotron, thus increasing the fill rate for the main ring. Construction of the PAR was recently completed, and commissioning is well underway. The PAR contains eight conventional 1.5T, flat field, 45 degrees dipole magnets with an ∼ 1m bending radius and no gradient: adjustment of the damping partition was achieved with 25.5 degrees edge angles. Four families of quadrupole magnets provide focusing, with each dipole closely bracketed by two quadrupoles. Ten sextupole magnets provide both steering and chromatic correction. Extensive magnetic measurements have characterized saturation-dependent effective length in the dipoles and interaction among the closely-spaced, large-aperture dipoles, quadrupoles and sextupoles. For injection and extraction, PAR employs three delay-line kickers with ∼ 120ns rise and fall times, and a single transformer septum magnet with a 2mm septum wall. A first-harmonic rf system is used to capture positrons and a twelfth-harmonic system provides an additional three-fold bunch compression. Diagnostics include 16 stripline beam position monitors, six fluorescent screens, dual fast/integrating current transformers, a tune measurement system, and two synchrotron light ports. Commissioning of the PAR with electrons has proceeded rapidly, starting at 150MeV and progressing to 450MeV as higher energy electrons became available. Alignment and dipole uniformity are sufficiently good that beam can be stored without the use of steering magnets. Experiments to date show excellent agreement with the machine model. Accumulation at 6Hz and extraction at 2Hz has been performed with essentially 100% efficiency

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[en] When high-brilliance radiation is needed for experiments, insertion device sources are generally viewed on-axis. Off-axis emission of flux can be prodigious especially from wiggler sources having large emission fans. The on-axis and off-axis radiation emission characteristics from insertion device sources have been calculated extensively and are well known, but experimental verifications of some characteristics, particularly those associated with off-axis emission, are relatively few. Here measurements of the flux spectrum and apparent source size are described, as a function of horizontal emission angle, from the former X25 hybrid wiggler at the National Synchrotron Light Source (NSLS).

[en] The world's foremost facility for research using x-rays and ultraviolet and infrared radiation, is operated by the National Synchrotron Light Source dept. This pamphlet described the participating research teams that built most of the beam lines, various techniques for studying materials, treatment of materials, and various industrial research (catalysis, pharmaceuticals, etc.)

[en] The National Synchrotron Light Source (NSLS) is the nation's largest facility dedicated solely to the production of synchrotron radiation. The facility has two electron storage rings: a vacuum ultraviolet (VUV) ring which operates at an electron energy of 750 MeV designed for optimum radiation at energies from 10 eV to 1 keV, and an x-ray ring which operates at 2.5 GeV to optimize radiation from 1 keV to 20 keV. A total of 44 beam ports emanate from these rings. Each beam port is capable of supporting one to four experiments. The VUV and x-ray rings presently accommodate over 800 scientists representing over 71 universities, industries, and government laboratories. Both basic and applied research are being done at the NSLS by groups from a variety of disciplines which include physics, chemistry, materials science, metallurgy, biology, and medicine. Among the techniques used are EXAFS (extended x-ray absorption fine structure), scattering, diffraction, topography, fluorescence, gas phase spectroscopy, lithography, tomography, microscopy, and circular dichroism

[en] This report briefly discusses the following topics: NSLS operations organization and administration; shift routines and operating practices; NSLS control room activities; communications; control of on-shift training; investigation of abnormal events; notifications; control of equipment and system status; lock-out tagout; independent verification; logkeeping; shift turnover; required reading; shift orders; equipment operations guides; operator aid postings; and equipment labeling

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[en] The expansion of the National Synchrotron Light Source has been funded by the US Department of Energy. The Phase II program consists of both increased conventional facilities and six new beam lines. In this paper, an overview of the six beam lines which will be constructed during Phase II is presented. For five of the lines special radiation sources are necessary and the designs of four of the devices are complete. The relevant parameters of the insertion devices under construction and development are presented

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