83 research outputs found
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CIRCE: A dedicated storage ring for coherent THz synchrotron radiation
We present the concepts for an electron storage ring dedicated to and optimized for the production of stable coherent synchrotron radiation (CSR) over the far-infrared terahertz wavelength range from 200 mm to about one cm. CIRCE (Coherent InfraRed CEnter) will be a 66 m circumference ring located on top of the ALS booster synchrotron shielding tunnel and using the existing ALS injector. This location provides enough floor space for both the CIRCE ring, its required shielding, and numerous beamlines. We briefly outline a model for CSR emission in which a static bunch distortion induced by the synchrotron radiation field is used to significantly extend the stable CSR emission towards higher frequencies. This model has been verified with experimental CSR results. We present the calculated CIRCE photon flux where a gain of 6-9 orders of magnitude is shown compared to existing far-IR sources. Additionally, the particular design of the dipole vacuum chamber has been optimized to allow an excellent transmission of these far-infrared wavelengths. We believe that the CIRCE source can be constructed for a modest cost
The Caravan Rolls On
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68409/2/10.1177_107554707900100103.pd
Developmental Reaction Norms: the Interactions among Allometry, Ontogeny and Plasticity
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The First Infrared Beamline at the ALS: Design, Construction, and Initial Commissioning
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Derivation of Aberration Coefficients for Single-Element Plane-Symmetric Reflecting Systems Using Mathematica{TM}
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Varied line-space gratings and applications
This paper presents a straightforward analytical and numerical method for the design of a specific type of varied line-space grating system. The mathematical development will assume plane or nearly-plane spherical gratings which are illuminated by convergent light, which covers many interesting cases for synchrotron radiation. The gratings discussed will have straight grooves whose spacing varies across the principal plane of the grating. Focal relationships and formulae for the optical grating-pole-to-exist-slit distance and grating radius previously presented by other authors will be derived with a symbolic algebra system. It is intended to provide the optical designer with the tools necessary to design such a system properly. Finally, some possible advantages and disadvantages for application to synchrotron to synchrotron radiation beamlines will be discussed
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Some considerations on uv optics for synchrotron radiation
Special problems of radiation shorter than about 2000A are discussed. Basic optics principles are reviewed, including the critical angle, total reflection, ''order sorting,'' and mirror configuration. The power present in the beam of synchrotron radiation is considered. Ray tracing mirrors and gratings is addressed in some detail. Finally, ray tracing is applied to a hypothetical toroidal grating monochromator. 6 figures. (RWR
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Aberration Analysis Calculations for Synchrotron Radiation Beamline Design
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