Operational experience with optical matching in the SLC final focus system
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چکیده
منابع مشابه
Polarization Correlations in the SLC Final Focus
At the SLC, the electron beam polarization (P) is measured by a Compton poharimeter downstream of the Interaction Point. This measurement averages over the entire beam distribution and must be corrected for various correlations to calculate the luminosity (L) weighted polarization. Because the spin rotation in the ARC is energy dependent, off energy particles have lower polarization. These part...
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A pair of high resolution wire scanners have been built and installed in the SLC final focus. The final focus optics uses a set of de-magnifying telescopes, and an ideal location for a beam size monitor is at one of the magnified image points of the interaction point. The image point chosen for these scanners is in the middle of a large bend magnet. The design beam spots here are about 2 micron...
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The SLC final focus system is designed to have an overall demagnification of 30: I, with a fl at the interaction point @*) of 5 mm, and an energy band pass of -0.4%. Strong sextupole pairs are used to cancel the large chromaticity which accrues primarily from the final triplet. Third-order aberrations limit the performance of the system, the dominating terms being Ut,, and U3466 terms (in the n...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 1990
ISSN: 0168-9002
DOI: 10.1016/0168-9002(90)90341-3