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Takahashi, Hiroki; Kawase, Masato; Sakaki, Hironao; Yoshikawa, Hiroshi; Ishiyama, Tatsuya*; Ito, Yuichi; Kato, Yuko; Sugimoto, Makoto*; Suzuki, Takahiro*
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.442 - 444, 2006/08
no abstracts in English
Kikuzawa, Nobuhiro
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.768 - 770, 2006/00
no abstracts in English
Nagai, Ryoji; Hajima, Ryoichi; Nishimori, Nobuyuki; Sawamura, Masaru; Kikuzawa, Nobuhiro; Iijima, Hokuto; Nishitani, Tomohiro; Minehara, Eisuke
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.514 - 516, 2006/00
no abstracts in English
Nagai, Ryoji; Iijima, Hokuto; Nishitani, Tomohiro; Hajima, Ryoichi; Nishimori, Nobuyuki; Sawamura, Masaru; Kikuzawa, Nobuhiro; Minehara, Eisuke
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.559 - 561, 2006/00
no abstracts in English
-A type low-level RF controllerNagai, Ryoji; Sawamura, Masaru; Hajima, Ryoichi; Nishimori, Nobuyuki; Kikuzawa, Nobuhiro; Iijima, Hokuto; Nishitani, Tomohiro; Minehara, Eisuke
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.838 - 840, 2006/00
no abstracts in English
Iijima, Hokuto; Nishitani, Tomohiro; Nagai, Ryoji; Hajima, Ryoichi; Minehara, Eisuke
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.529 - 531, 2006/00
no abstracts in English
Iijima, Hokuto; Nagai, Ryoji; Hajima, Ryoichi; Minehara, Eisuke
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.738 - 740, 2006/00
no abstracts in English
Nishitani, Tomohiro; Tabuchi, Masao*; Noritake, Yosuke*; Hayashitani, Haruhiko*; Hajima, Ryoichi; Iijima, Hokuto; Nagai, Ryoji; Sawamura, Masaru; Kikuzawa, Nobuhiro; Nishimori, Nobuyuki; et al.
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.45 - 47, 2006/00
no abstracts in English
Sawamura, Masaru
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.832 - 834, 2006/00
no abstracts in English
Arakawa, Kazuo
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.85 - 89, 2006/00
no abstracts in English
Tamura, Fumihiko; Schnase, A.; Nomura, Masahiro; Yamamoto, Masanobu; Hasegawa, Katsushi; Yoshii, Masahito*; Omori, Chihiro*; Hara, Keigo*; Toda, Makoto*; Takagi, Akira*; et al.
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.460 - 462, 2006/00
The beam in the J-PARC RCS has to be extracted with the proper timingand phase to the MR (main ring) and the neutron target in the MLF (material and life science facility). The neutron beamfrom the neutron target is led to the group of spectrometers, such asthe fermi chopper. The choppers and the beam must be precisely synchronized to achieve high energy resolution. Also, the MR injection requires the proper RF bucket selection andprecise beam phase control to avoid the longitudinal dipole oscillations. In this presentation we describe the requirements of the beamsynchronization, the operational principle, and the newly developedmodules for the synchronization.
Okumura, Susumu; Kurashima, Satoshi; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yoshida, Kenichi; Ishibori, Ikuo; Yuri, Yosuke; Nara, Takayuki; Agematsu, Takashi
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.919 - 921, 2006/00
no abstracts in English
Okawa, Tomohiro; Ao, Hiroyuki; Ikegami, Masanori*
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.355 - 357, 2006/00
L3BT is a beam transport line from J-PARC (Japan Proton Accelerator Research Complex) linac to the succeeding 3-GeV RCS (Rapid Cycling Synchrotron). The construction of the L3BT has been almost finished. The beam commissioning of the L3BT will be started soon. On the other hand we have performed 3D particle simulations with IMPACT to evaluate the performance of the halo scraping and beam loss in the scraper section and beam dump line. In this paper, results of the beam simulation of the L3BT are presented. The construction status of the L3BT is also presented in brief.
Sato, Kenichiro; Lee, S.*; Toyama, Takeshi*; Hayashi, Naoki
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.115 - 117, 2006/00
3 GeV Rapid Cycling Synchrotron and 50 GeV Main Ring Synchrotron in J-PARC, which is under construction, are expected to accelerate high power proton beam of 1 MW and 0.75 MW class, respectively. To measure such a high intensity beam profile, we have been developing Residual Gas Ionization Profile Monitors (IPMs). To confirm the reliability of this type monitors, we constructed a prototype and installed in Main Ring of Proton Synchrotron at KEK and tested using proton beams for two different operation modes, that is ion and electron collection mode using magnetic guiding field. The obtained data are used to discuss the detection reliability of the real ones.
Morishita, Takatoshi; Asano, Hiroyuki; Ito, Takashi; Ikegami, Masanori*; Takasaki, Eiichi*; Tanaka, Hirokazu*; Naito, Fujio*; Yoshino, Kazuo*
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.376 - 378, 2006/00
In the J-PARC Linac, the DTL and the SDTL have been installed. A precise alignment of accelerator components is essential for high quality beam acceleration. Due to the heavy wiring for DTQs, the realignment of DTL cavity requires a long term. Then the DTL/SDTL and the focusing magnets are aligned precisely enough for the beam operation at the installation. The DTL/SDTL alignment accuracy satisfied the requirement, which confirmed by the laser tracker measurement. The floor level of the accelerator tunnel has been measured periodically. The long term motion of accelerator tunnel is quantitatively evaluated since Feb. 2005.
Kondo, Yasuhiro; Ueno, Akira; Hasegawa, Kazuo
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.388 - 390, 2006/00
no abstracts in English
Sato, Susumu; Igarashi, Zenei*; Akikawa, Hisashi*; Tomisawa, Tetsuo; Lee, S.*; Ueno, Akira; Ikegami, Masanori*; Ao, Hiroyuki
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.127 - 129, 2006/00
In J-PARC LINAC section, several types of beam position monitors (BPMs) from 37.7 mm to 120 mm in diameter are allocated. In this paper, background of design and key points for a larger diameter (180 mm) of BPM are reported.
Sakaki, Hironao; Takahashi, Hiroki; Ishiyama, Tatsuya*; Kawase, Masato; Sako, Hiroyuki; Kato, Yuko; Ito, Yuichi; Yoshikawa, Hiroshi; Ueda, Shinji*; Suzuki, Takahiro*
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.367 - 369, 2006/00
This paper reports Personnel Interlock System, Machine Protection System, and other Interlock System in J-PARC LINAC. The noise measures is important in MPS, we describe the noise decreasing method. The number of accelerating particles in J-PARC LINAC that can be accelerated has been deciding by ministry's guideline. Therefore, it is necessary to do severe surveillance. Here we also explain this particle monitoring instrument.
Shen, G.; Watanabe, Kazuhiko*; Kato, Yuko; Sakaki, Hironao; Sako, Hiroyuki; Ito, Yuichi; Yoshikawa, Hiroshi; Hanawa, Katsushi*; Mizuno, Seiji*
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.364 - 366, 2006/00
The control system of J-PARC project is under construction. After almost finishing the hardware installation of the L3BT section, an online device commissioning was performed for magnet power supply, stepping motor and vacuum system. Many components for device control have already been developed separately, but not integrated together yet. It is the first experience to combine all the components, including core software for a front-end IO controller, an EPICS run-time database, and a remote graphic user interface. This paper describes the detail of the recent construction status of the L3BT control system, including component development, system integration, and device commissioning.
Hasegawa, Katsushi; Nomura, Masahiro; Schnase, A.; Tamura, Fumihiko; Yamamoto, Masanobu; Yoshii, Masahito*; Omori, Chihiro*; Hara, Keigo*; Toda, Makoto*; Takagi, Akira*; et al.
Proceedings of 3rd Annual Meeting of Particle Accelerator Society of Japan and 31st Linear Accelerator Meeting in Japan (CD-ROM), p.457 - 459, 2006/00
no abstracts in English