Author: Ghasem, H.
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  • H. Ghasem, J. Alabau-Gonzalvo, F. Antoniou, S. Papadopoulou, Y. Papaphilippou
    CERN, Geneva, Switzerland
  The new design of CLIC damping rings is based on longitudinal variable bends and high field superconducting wiggler magnets. It provides an ultra-low horizontal normalised emittance of 412 nm-rad at 2.86 GeV. In this paper, nonlinear beam dynamics of the new design of the damping ring (DR) with trapezium field profile bending magnets have been investigated in detail. Effects of the misalignment errors have been studied in the closed orbit and dynamic aperture.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMW003  
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WEPOW017 Recent Progress on the Development of Iranian Light Source Facility (ILSF) Project 2861
  • J. Rahighi, F.A. Ahmad Mehrabi, E. Ahmadi, S. Ahmadian, M. Akbari, S. Amiri, J. Dehghani, R. Eghbali, S. Fatehi, H. Ghasem, A. Gholampour, M. Jafarzadeh, P. Khodadoost, M. Moradi, M. Rahimi, M. Razazian, A. Sadeghipanah, F. Saeidi, E. Salimi, Kh.S. Sarhadi, O. Seify, M.Sh. Shafiee, D. Shirangi, E.H. Yousefi
    ILSF, Tehran, Iran
  The Iranian Light Source Facility Project (ILSF) is a 3rd generation light source with energy of 3 GeV, a full energy injector and a 150 MeV linac as pre-injector. The stored beam current in top up mode is 400 mA, the beam lifetime is about 7 h, and the average pressure of vacuum chamber is approximately 1.33 × 10-7 Pa (1 nTorr). The ILSF storage ring has been designed to be competitive in the future operation years. Some prototype accelerator components such as high power solid state radio frequency amplifiers, LLRF system, thermionic RF gun, storage ring H-type dipole and quadruple magnets, Hall probe system for magnetic measurement and highly stable magnet power supplies have been constructed in ILSF R&D laboratory.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW017  
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WEPOW016 Designing an Ultra Low Emittance Lattices for Iranian Light Source Facility Storage Ring 2858
  • E. Ahmadi, M. Jafarzadeh, J. Rahighi
    ILSF, Tehran, Iran
  • H. Ghasem
    IPM, Tehran, Iran
  • S.M. Jazayeri
    IUST, Narmac, Tehran, Iran
  Electron storage rings are extensively used for high luminosity colliders, damping rings in high-energy physics and synchrotron light sources. To further increase the luminosity at the colliders or brightness of a synchrotron light sources, the beam emittance is being continually pushed downward. In this paper, we investigate the lattice design for the storage ring of Iranian Light Source Facility (ILSF) with an ultra-low emittance, intermediate energy of 3 GeV and circumference of 528 m. We present the design results for a five-band achromat lattice with the natural emittance of 276 pm-rad. The base line is based on 20 straight sections with the length of 7 m.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW016  
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