Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Masaaki Sobajima"'
Autor:
Fumihiko Oda, Hidenori Miura, K. Nomaru, Haruo Kuroda, Kawai Masayuki, M. Yokoyama, Hidehito Koike, Masaaki Sobajima
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 507:261-264
FEL lasing with the saturated power in the wavelength of 4-16 µm was achieved by using the KHI (Kawasaki Heavy Industries, ltd.) FEL device. The macro-pulse length of the electron beam was improved by using the LaB6 cathode instead of the dispenser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84803210d73127c97a773bbe279e3fe8
https://doi.org/10.1016/s0168-9002(03)00926-4
https://doi.org/10.1016/s0168-9002(03)00926-4
Autor:
Fumihiko Oda, V.M. Popik, Kawai Masayuki, K. Toyoda, M. Yokoyama, Hidehito Koike, Masaaki Sobajima, K. Nakai, Haruo Kuroda
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 507:242-245
Tokyo University of Science and Kawasaki Heavy Industries, Ltd. (KHI) have completed in 2001 the design and assembly of an FIR-FEL device using an S-band linac based at a spectral range between 300 and 1000 μm. The FEL device was installed into the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54f9129bb735df0cf9c3e0203f631c0c
https://doi.org/10.1016/s0168-9002(03)00868-4
https://doi.org/10.1016/s0168-9002(03)00868-4
Autor:
Fumihiko Oda, Hidenori Miura, K. Nomaru, M. Yokoyama, Hiroto Kuroda, Masaaki Sobajima, Hidehito Koike, Kawai Masayuki
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 483:291-295
FEL lasing with the saturated power in the wavelength of 4–16mm was achieved by using the KHI (Kawasaki Heavy Industries, Ltd.) FEL device. The macro-pulse length of the electron beam was improved by using the LaB6 cathode instead of the dispenser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6d0489f17418db3b5c4ec4680ef01fe
https://doi.org/10.1016/s0168-9002(02)00330-3
https://doi.org/10.1016/s0168-9002(02)00330-3
Autor:
Fumihiko Oda, Yokoyama Minoru, Kawai Masayuki, Hidehito Koike, Hidenori Miura, Masaaki Sobajima
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 483:240-244
A far-infrared FEL will be newly installed in the IR FEL Research Center at the Science University of Tokyo (FEL-SUT) in 2002. In this study, optical cavity misalignment effects for the far-infrared FEL are researched by using the simulation code tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24e729ea6fafc77f1638d14f09e1475e
https://doi.org/10.1016/s0168-9002(02)00319-4
https://doi.org/10.1016/s0168-9002(02)00319-4
Autor:
Hidenori Miura, K. Nomaru, H Hattori, Hidehito Koike, Kawai Masayuki, Masaaki Sobajima, M. Yokoyama, Haruo Kuroda, Fumihiko Oda
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 475:38-42
The first lasing of the KHI FEL device installed at the FEL-SUT was obtained at 9 μm on July 6, 2000. The FEL device consists of a 40 MeV accelerator, a beam transport system with two 25° bending magnets, an undulator of 40 periods and 32 mm period
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f77c0bcea8aae5c56aa2e5bd1b253c9
https://doi.org/10.1016/s0168-9002(01)01531-5
https://doi.org/10.1016/s0168-9002(01)01531-5
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 475:583-587
Kawasaki Heavy Industries, Ltd. (KHI) has developed a linac-based compact IR free electron laser device and has installed it in the FEL-SUT (IR FEL Research Center of Science University of Tokyo). The FEL device adopts a combination of a multi-cell R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cead74caf227be9b1ad1cbd6cf15b64
https://doi.org/10.1016/s0168-9002(01)01588-1
https://doi.org/10.1016/s0168-9002(01)01588-1
Autor:
Kiyoshi Yoshikawa, Y.J. Li, M. Ohnishi, Takeshi Nakamura, Kai Masuda, Tetsuo Yamazaki, Jiro Kitagaki, Masaaki Sobajima, Hisayuki Toku
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 429:414-418
In January 1997, the Beijing FEL observed large laser amplification at 8–18 μm. However, through the collaborative work, it was found from both experiments and numerical simulations that the laser loss on the beam tube wall was not negligible, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd02963847aad5c8ab4936f9f2b1c26a
https://doi.org/10.1016/s0168-9002(99)00119-9
https://doi.org/10.1016/s0168-9002(99)00119-9
Autor:
Takashi Inamasu, Jiro Kitagaki, Kiyoshi Yoshikawa, Hisayuki Toku, Kai Masuda, M. Ohnishi, Masaaki Sobajima
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 429:347-351
A beam with greatly reduced emittance is required for further improvements of FELs, in particular, for FELs of shorter wavelengths, and of narrower bandwidths. From this viewpoint, the BNL/SLAC/UCLA 1.6-cell S-band photocathode RF gun performance cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a66828f77e1c1a2e72f0de37fd8d3236
https://doi.org/10.1016/s0168-9002(99)00085-6
https://doi.org/10.1016/s0168-9002(99)00085-6
Autor:
Takashi Inamasu, Masaaki Sobajima, Kiyoshi Yoshikawa, Kai Masuda, Hisayuki Toku, D. Tsukahara, Jiro Kitagaki, Yasushi Yamamoto, M. Ohnishi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 407:364-369
To understand the behavior of electrons in a travelling-wave-type RF gun using the thermionic cathode with expectation of less backstreaming effects, gun electrode structures were studied to improve the electron beam properties for FELs. Electron tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f24eb76699ddb10d903ff003af10f219
https://doi.org/10.1016/s0168-9002(98)00051-5
https://doi.org/10.1016/s0168-9002(98)00051-5
Autor:
Kai Masuda, Jialin Xie, Hisayuki Toku, Y.J. Li, Jiro Kitagaki, Takeshi Nakamura, Masaaki Sobajima, Yasushi Yamamoto, Kiyoshi Yoshikawa, M. Ohnishi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 407:121-125
In January 1997, the first lasing at 8-18 mu m was observed at Beijing FEL (BFEL). However, the output powers were found not large enough especially in the longer wavelength regime, where the laser power loss on the relatively narrow beam-duct wall i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e48987103d05f822389a0ffb8f8c29fb
https://doi.org/10.1016/s0168-9002(97)01380-6
https://doi.org/10.1016/s0168-9002(97)01380-6