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TY - CONF AU - Shimada, M. AU - Honda, Y. AU - Hotei, T. AU - Kato, R. AU - Miyajima, T. AU - Nakamura, N. AU - Obina, T. AU - Uchiyama, T. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Systematic Measurements of the Coherent THz Spectra by Magnetic Bunch Compression at the Compact ERL J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Short electron bunch beam is one of the key elements of a Free Electron Laser (FEL) or intense THz coherent light source. The Energy Recovery Linac (ERL) has the strong advantage of operation of such an electron bunch at high repetition rate and is expected to increase the photon flux. At the Compact ERL in KEK site, we have demonstrated the magnetic bunch compression at the 180-degree return arc and measured the THz spectra of the Coherent Transition Radiation (CTR). This paper reports the revamped THz beamline and the improvement of the beam tuning as well as the systematic measurements of the THz spectra by magnetic bunch compression. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1486 EP - 1488 KW - optics KW - electron KW - radiation KW - sextupole KW - linac DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPGW037 UR - http://jacow.org/ipac2019/papers/tupgw037.pdf ER -