| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
An accelerator based THz light source needs the very short electron pulse such as a few hundred femtosecond. To improve the performance of those light source, it is indispensable to understand the beam dynamics in the injector section before acceleration. In this work, we have been studied the longitudinal phase space measurement system (LFC-Camera) for quasi-relativistic electron beam by Cherenkov light observation. Cherenkov radiator with lower refractive index may contribute to expand the energy measuring range for the LFC-Camera. We designed new optical system for Cherenkov light, which can preserve time information. To demonstrate the performance of it, we evaluated it using Cherenkov light from electron beam at t-ACTs. The data we have obtained suggest that the time resolution of optical system was less than 200 fsec including wavelength dispersion in air and electron beam size.
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