“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 15587
School of Particles and Accelerator
  Title:   RF emittance in a low energy electron linear accelerator
1.  Shahin Sanaye Hajari
2.  Saeid Haghtalab
3.  Seyed Hamed Shaker
4.  Mohsen Dayyani Kelisani
  Status:   Published
  Journal: Nucl. Instr. and Meth. in Phys. Res. A
  Vol.:  888
  Year:  2018
  Pages:   250-256
  Supported by:  IPM
Transverse beam dynamics of an 8 MeV low current (10 mA) S-band traveling wave electron linear accelerator has been studied and optimized. The main issue is to limit the beam emittance, mainly induced by the transverse RF forces. The linac is being constructed at Institute for Research in Fundamental Science (IPM), Tehran Iran Labeled as Irans First Linac, nearly all components of this accelerator are designed and constructed within the country. This paper discusses the RF coupler induced field asymmetry and the corresponding emittance at different focusing levels, introduces a detailed beam dynamics design of a solenoid focusing channel aiming to reduce the emittance growth and studies the solenoid misalignment tolerances. In addition it has been demonstrated that a prebuncher cavity with appropriate parameters can help improving the beam quality in the transverse plane.

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