• Corpus ID: 119262227

Energy Deposition along The Helical Undulator at ILC-250GeV

@article{Alharbi2019EnergyDA,
  title={Energy Deposition along The Helical Undulator at ILC-250GeV},
  author={Khaled B. Alharbi and Sabine Riemann and G. Moortgat-pick and Ayash Alrashdi University of Hamburg and Hamburg and H Germany and Deutsches Elektronen-Synchrotron and Zeuthen and King Abdul-Aziz City for Science and Technology and Riyadh and Kingdom of Saudi Arabia},
  journal={arXiv: Accelerator Physics},
  year={2019}
}

• K. Alharbi, S. Riemann, +9 authors Kingdom of Saudi Arabia
• Published 20 February 2019
• Physics
• arXiv: Accelerator Physics

The positron source of the International Linear Collider is based on a superconducting helical undulator passed by the high-energy electron beam to generate photons which hit a conversion target. Since the photons are circularly polarized the resulting positron beam is polarized. At ILC250, the full undulator is needed to produce the required number of positrons. To keep the power deposition in the undulator walls below the acceptable limit of 1W/m, photon masks must be inserted in the undulator line. The photon mask design requires a detailed study of the power deposition in the walls and masks. This paper describes the power deposition in the undulator wall due to synchrotron radiation.