期刊
JAPANESE JOURNAL OF APPLIED PHYSICS
卷 52, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.7567/JJAP.52.056401
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology
- Grants-in-Aid for Scientific Research [23740203, 24654054, 24654076, 23226020, 22244027] Funding Source: KAKEN
We report the successful generation and acceleration of a 1-ms-long pulse and multibunch electron beam by a normal conducting photocathode RF gun and a super conducting accelerator at the KEK Superconducting Test Facility (STF). A 1.3 GHz normal conducting RF gun generates a 1 ms and 10 mA macropulse that fully satisfies the designed parameters. This is the longest macropulse generated by a normal conducting RF gun with a frequency of more than 1 GHz. A beam acceleration of up to 40 MeV was demonstrated with more than 60% of the designed average current. The accelerated beam properties were evaluated: the intensity and energy fluctuations were 3.8% and less than 0.08%, respectively. These beam properties are sufficient for the requirement of the STF operation including that in the quantum beam project, which is high-brightness-X-ray generation by inverse laser Compton scattering. The intensity fluctuation should be improved toward the International Linear Collider (ILC) for uniform acceleration. (C) 2013 The Japan Society of Applied Physics
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