The NSLS VUV undulator: Spectral characteristics and operating experience
نویسندگان
چکیده
منابع مشابه
The revitalized NSLS VUV ring
A status report on the revitalization of the NSLS VUV ring will be presented, concentrating on three areas: 1) the four infrared ports (U2A/B, U4IR, U10A/B, and U12IR), 2) conversion of out-of-date toroidal grating monochromators to spherical grating type (U4A, U7A, and U12A), and 3) new insertion device beamlines (U5UA and U13UB). All of these beamlines were designed (new ones) or upgraded (ol...
متن کاملObservation of coherent synchrotron radiation from the NSLS VUV ring
We report the observation of multiparticle coherent emission in the very far infrared from bunched electrons in an electron storage ring. The emission occurs in quasi-periodic bursts, and only when the electron beam current exceeds a threshold value, suggesting an instability-driven modulation of the electron bunch density. For the operating conditions reported, the spectral content of the cohe...
متن کاملStretched Bunch Shapes in the Nsls Vuv Ring
For bunches stretched with a higher-harmonic cavity, longitudinal bunch shapes are influenced by small variations in the potential wells of the buckets of the bunch train. This paper discusses three things that perturb the bunch shapes in the NSLS VUV ring: the 90 (non-optimal) phase of the harmonic cavity maintained by the RF controls [1], higher-order modes (HOM) of the main cavity, and the e...
متن کاملSmall-gap Undulator Experiment on the Nsls X-ray Ring"
We report results of an on-going experiment being carried out in the X13 straight section of the NSLS X-ray Ring which explores the limits of the operation of small-gap undulators. In particular, we discuss measurements of stored electron beam lifetime as a function of the vertical aperture presented by a 4-jaw scraper or a variable-aperture vacuum vessel. At an electron beam current of 300 mA ...
متن کاملInvestigation of Coherent Emission from the NSLS VUV Ring
Coherent synchrotron radiation from the NSLS VUV ring has been detected and partially characterized. The observations have been performed at the new far infrared beamline U12IR. The coherent radiation is peaked near a wavelength of 7mm and occurs in short duration bursts. The bursts occur only when the electron beam current (I) exceeds a threshold value (Ith), which itself varies with ring oper...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 1988
ISSN: 0168-9002
DOI: 10.1016/0168-9002(88)90367-1