@inproceedings{oai:repo.qst.go.jp:00086557, author = {Ohgaki, Hideaki and Ali, Khaled and Kii, Toshiteru and Zen, Heishun and Takehito, Hayakawa and Toshiyuki, Shizuma and Fujimoto, Masaki and Taira, Yoshitaka and Takehito, Hayakawa and Toshiyuki, Shizuma}, book = {Proceedings on the 13th International Particle Accelerator Conference}, month = {Jul}, note = {Flat-Laser Compton Scattering Gamma-ray beam (F-LCS), which has a flat distribution in the energy spectrum and the spatial distribution with a small beam size, has been developed to study an isotope selective CT Imaging application in the beamline BL1U in UVSOR. We pro-pose generation of an F-LCS beam by using a circular motioned electron beam, which can be generated by a helical undulator installed in a storage ring, and collision with an intense laser beam. A simulation study on the LCS beamline BL1U in UVSOR shows a weak magnetic field (K=0.2) can generate an F-LCS beam. A demonstra-tion experiment has been carried out in UVSOR with the APPLE-II undulator. The spectra of the LCS beams were measured by using a 120% Ge detector. As a result, the energy bandwidth of the LCS peak was observed. The energy bandwidth measured in the energy spectra and the distribution map agreed with the EGS5 simulation.}, title = {GENERATION OF FLAT-LASER COMPTON SCATTERING GAMMA-RAY BEAM IN UVSOR}, year = {2022} }