An optimization of ILC positron source for electron-driven scheme

Y. Seimiya, M. Kuriki, T. Takahashi, M. Urano, T. Okugi, T. Omori, M. Satoh, J. Urakawa, S. Kashiwagi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

International Linear Collider is a future accelerator to find new physics behind the electroweak symmetry breaking by precise measurements of Higgs sector, Top quark, and so on. ILC has capacities to reveal new phenomena beyond Standard model, such as Supersymmetry particles and dark matters. In current design of positron source, undulator scheme is adapted as a baseline. In the scheme, positrons are generated from gamma rays through pair-creation process in Ti-alloy target. Generations of the gamma rays by the undulator radiation requires more than 130 GeV electrons. Therefore, a system demonstration of the scheme is practically difficult prior to the real construction. Consequently, it is desirable to prepare a technical backup of this undulator scheme. We study an optimization of positron source based on the conventional electron-driven scheme for ILC. In this scheme, positron beam is generated by several GeV electron beam impinging on W-Re target. Although heavy heat load and destruction of the target is a potential problem, it can be relaxed by stretching the effective pulse length to 60 ms instead of 1 ms, by a dedicated electron linac for the positron production. In this report, a start-to-end simulation of the electron-driven ILC positron source is performed. Beam-loading effect caused by multibunch acceleration in the standing wave RF cavity is also considered.

Original languageEnglish
Title of host publication6th International Particle Accelerator Conference, IPAC 2015
PublisherJoint Accelerator Conferences Website (JACoW)
Pages2529-2531
Number of pages3
ISBN (Electronic)9783954501687
Publication statusPublished - 2015
Event6th International Particle Accelerator Conference, IPAC 2015 - Richmond, United States
Duration: 2015 May 32015 May 8

Publication series

Name6th International Particle Accelerator Conference, IPAC 2015

Other

Other6th International Particle Accelerator Conference, IPAC 2015
CountryUnited States
CityRichmond
Period15/5/315/5/8

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics

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