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- Y. Seimiya, M. Kuriki
HU/AdSM, Higashi-Hiroshima, Japan
- S. Kashiwagi
Tohoku University, Research Center for Electron Photon Science, Sendai, Japan
- T. Okugi, T. Omori, M. Satoh, J. Urakawa
KEK, Ibaraki, Japan
- T. Takahashi
Hiroshima University, Graduate School of Science, Higashi-Hiroshima, Japan
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ILC (International Linear Collider) is a next high-energy physics project to study the Higgs property as detail as possible and new phenomena beyond standard model. In ILC, the positron beam is produced by converting gamma rays from undulator radiations. To obtain gamma rays as undulator radiation, the electron beam for collision (150 GeV or more) is used. This positron generation scheme is a totally new approach. From project point of view, it is desirable to have a technical backup as a replacement of the undulator scheme. We propose an ILC positron source based on the conventional electron driven scheme. In this scheme, positron beam is generated from electromagnetic shower in a heavy target material where electron beam is injected. By manipulating the beam time structure to relax the heat load on the production target, the scheme can be feasible technically. In this study, positron capture in the electron driven scheme is simulated from the positron production to the positron damping ring, to demonstrate that an enough amount of positron can be generated and captured with a controllable heat load on the target.
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