Goro Isoyama

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The characteristics of the single-bunch electron beam of the 38 MeV L-band electron linac at the Institute of Scientific and Industrial Research in Osaka University have been investigated. Recently, the injector of the linac has been improved to increase the peak beam current for injection. The maximum charge of electrons in a bunch of the accelerated beam(More)
As terahertz (THz) frequencies correspond to those of the intermolecular vibrational modes in a polymer, intense THz wave irradiation affects the macromolecular polymorph, which determines the polymer properties and functions. THz photon energy is quite low compared to the covalent bond energy; therefore, conformational changes can be induced "softly,"(More)
The magnet lattice for the Siam Photon Source, the first storage ring for synchrotron radiation research in Thailand, has been designed. The storage ring has a double-bend achromat lattice and fourfold symmetry with four straight sections. Although the magnet lattice is relaxed, an emittance value of 72 pi nm rad has been obtained, which is only 1.4 times(More)
In order to measure the longitudinal phase-space profile of the electron beam, we are developing a compact measurement system consisting of a Cherenkov radiator, a bending magnet and a streak camera. The Cherenkov radiator with an aerogel is installed in the beam transport line, and the electron distribution in the longitudinal phase-space is obtained.(More)
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