Measurement of the beam longitudinal profile in a storage ring bynon-linear laser mixing

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We report on the development of a new technique for the measurement of the longitudinal beam profile in storage rings. This technique, which has been successfully demonstrated at the Advanced Light Source, mixes the synchrotron radiation with the light from a mode-locked solid state laser oscillator in a non-linear crystal. The up-converted radiation is then detected with a photomultiplier and processed to extract, store, and display the required information. The available choices of laser repetition frequency, pulse width, and phase modulation give a wide range of options for matching the bunch configuration of a particular storage ring. Besides the dynamic ... continued below

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Beche, J.-F.; Byrd, J.; De Santis, S.; Denes, P.; Placidi, M.; Turner, W. et al. May 3, 2004.

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Description

We report on the development of a new technique for the measurement of the longitudinal beam profile in storage rings. This technique, which has been successfully demonstrated at the Advanced Light Source, mixes the synchrotron radiation with the light from a mode-locked solid state laser oscillator in a non-linear crystal. The up-converted radiation is then detected with a photomultiplier and processed to extract, store, and display the required information. The available choices of laser repetition frequency, pulse width, and phase modulation give a wide range of options for matching the bunch configuration of a particular storage ring. Besides the dynamic measurement of the longitudinal profile of each bunch, the instrument can monitor the evolution of the bunch tails, the presence of untrapped particles and their diffusion into nominally empty RF buckets (''ghostbunches'').

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  • Beam Instrumentation Workshop 2004, Knoxville,Tennessee, 5/3-5/6/2004

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  • Report No.: LBNL--55210
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 861128
  • Archival Resource Key: ark:/67531/metadc782127

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  • May 3, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 1, 2016, 8:18 p.m.

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Beche, J.-F.; Byrd, J.; De Santis, S.; Denes, P.; Placidi, M.; Turner, W. et al. Measurement of the beam longitudinal profile in a storage ring bynon-linear laser mixing, article, May 3, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc782127/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.