“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 11515
School of Particles and Accelerator
  Title:   Utilization of transverse deflecting RF cavities in the designed QBA lattice of 3 GeV Taiwan Photon Source
  Author(s): 
1.  Hossein Ghasem
2.  G. H . Luo
3.  A Mohammadzadeh
  Status:   Published
  Journal: JINST
  No.:  T01001
  Vol.:  5
  Year:  2010
  Supported by:  IPM
  Abstract:
A pair of superconducting transverse deflecting RF cavities has been studied in the QBA low emittance lattices of 3 GeV TPS for generating ultra short X-ray pulses. Three configurations with different locations for the two cavities in a super-period of the TPS ring are investigated. During numerous turns of the electron tracking, the nonlinear effects between the cavities, the energy spread, the momentum compaction factor, and the synchrotron radiation effects are taken into account. The configuration with positioning the RF deflectors between the QBA cells in each super-period as an optimum arrangement gives rise to better quality electron bunches and radiated photon pulses. The FWHM of the radiated photon pulses of about 540 fs with an acceptable intensity is attained by optimizing the compression optical elements of the TPS photon beam line. Furthermore, the effects of the electron bunch length are studied by alternatively employing an accelerating RF cavity operating with 1.1 MV and 3.0 MV, respectively. The operation of the accelerating RF cavity at 3.0 MV improved the intensity of the photon pulses up to 30

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