2018/01/25 by Andriy Ushakov, Ushakov, Andriy, Gudrid Moortgat‐Pick +3
Engineering · Physics and Astronomy · #Accelerator Physics (physics.acc-ph) #FOS: Physical sciences #Gyrotron and Vacuum Electronics Research #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics
paper · pdf · doi:10.48550/arxiv.1801.08465
openalex publication_date 2018/01/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In the baseline design of the International Linear Collider (ILC) an\nundulator-based source is foreseen for the positron source. In this study the\nenergy deposition in the pulsed flux concentrator (FC) of positron source is\ncalculated for the ILC at 250 GeV center-of-mass energy. The peak energy of 33\nJ/g deposited by one beam pulse in the current design of the FC is above the\nlimit for copper material. Several promising options were considered to solve\nthe issue of overheating the FC: the quarter wave transformer (QWT) has a\nsignificantly bigger aperture and is considered as an valuable and safe\nalternative for the FC. Since the positron source with a QWT is expected to\nlead to a lower positron capture efficiency, also the expected positron yield\nwas calculated in addition to the energy deposition in QWT.\n