000931721 001__ 931721
000931721 003__ SzGeCERN
000931721 005__ 20240223163547.0
000931721 041__ $$aeng
000931721 100__ $$aKato, Ryukou
000931721 245__ $$aUpgrade of the L-Band Linac at ISIR, Osaka University for a Far-Infrared FEL
000931721 260__ $$c2004
000931721 520__ $$aWe are developing the far-infrared free-electron laser (FEL) using the L-band electron linac at the Institute of Scientific and Industrial Research (ISIR), Osaka University. The first lasing of the FEL was obtained at wavelengths from 32 to 40 μm in 1994, and the wavelength region has been extended up to 150 μm. The linac was designed and constructed for producing the high-intensity single-bunch beam for pulse radiolysis, so that the filling time of the accelerating structure is 1.8 μs long and the maximum macropulse length of the electron beam is limited to 2 μs, though the duration of the RF pulse can be extended to 4 μs. As a result, the FEL could not reach power saturation because the number of amplification times was limited. Recently, the linac has been extensively remodeled to realize high operational stability and reproducibility for advanced studies in beam science and technology. Almost all the peripheral components are replaced with new ones. At this opportunity, the linac is also made suitable for FEL so that the macropule can be extended up to 6 μs in duration for power saturation of the FEL. The modification of the linac has been completed and commissioning is now in progress. In this paper, we will report performance and characteristics of the linac after modification.
000931721 595__ $$aSIS FEL04-2006
000931721 65017 $$2SzGeCERN$$aAccelerators and Storage Rings
000931721 690C_ $$aARTICLE
000931721 700__ $$aIsoyama, Goro
000931721 700__ $$aKashiwagi, Shigeru
000931721 700__ $$aSuemine, Shoji
000931721 700__ $$aYamamoto, Tamotsu
000931721 8564_ $$uhttps://accelconf.web.cern.ch/f04/papers/TUPOS26/TUPOS26.PDF$$yPublished version from JACoW
000931721 901__ $$uISIR, Osaka
000931721 916__ $$sn$$w200609
000931721 960__ $$a13
000931721 961__ $$c20060314$$h1502$$lCER01$$x20060227
000931721 963__ $$aPUBLIC
000931721 962__ $$b796435$$ke-proc. TUPOS26$$ntrieste20040829
000931721 970__ $$a002599385CER
000931721 980__ $$aARTICLE