Paper |
Title |
Page |
TUPC009 |
Vertical Beam Profile Measurement and Analysis with X-ray Pinhole
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1059 |
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- M. J. Boland, M. J. Spencer
ASP, Clayton, Victoria
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Imaging the electron beam profile at a synchrotron light source is commonly performed in the x-ray regime using a pinhole camera system. However, with machines pushing down the vertical emittance, including errors in source point optical parameters, pinhole manufacturing limitations and error analysis difficulties associated with diffraction and image capture, the pinhole imaging system has large errors, up to 50% for an emittance of a few picometre. An analysis has been done at the Australian Synchrotron (AS) looking at the effects of errors in determining the x-ray pinhole source point parameters.
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TUPC010 |
Single Bunch Studies at the Australian Synchrotron
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1062 |
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- R. T. Dowd, M. J. Boland, G. LeBlanc, M. J. Spencer, Y. E. Tan
ASP, Clayton, Victoria
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Studies using a single high charge electron bunch have been conducted at the Australian Synchrotron to characterise the impedance of the machine at various stages of commissioning and insertion device configuration. This paper will present the results of these studies and show the time evolution of machine impedance with increasing number of insertion devices.
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THPC135 |
Vertical Emittance Measurements and Optimisation at the Australian Synchrotron
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3303 |
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- M. J. Spencer, R. T. Dowd, G. LeBlanc
ASP, Clayton, Victoria
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Adjustment to the vertical emittance of the Australian Synchrotron storage ring was made using 28 skew quadrupoles. The skew quadrupole settings were calculated using the LOCO method which uses measurements of vertical dispersion as well as transverse coupling. The vertical emittance was monitored indirectly through lifetime, tune crossing, x-ray pinhole camera and calibrated model calculations. The paper outlines the results of these studies.
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THPC136 |
Design and Commissioning of a Bunch by Bunch Feedback System for the Australian Synchrotron
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3306 |
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- M. J. Spencer, G. LeBlanc, K. Zingre
ASP, Clayton, Victoria
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A transverse bunch feedback system has been designed in order to fight the effects of coupled bunch instabilities. This system is currently in the commissioning phase. A digital system was chosen because of its flexibility and diagnostic potential. While the major components were sourced from a private company, time has also been spent on in house development of an analogue front-end and the diagnostic components of the software.
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