Author: Ito, T.
Paper Title Page
MOPTS046 Upgrade of the 3-MeV LINAC for Testing of Accelerator Components at J-PARC 960
 
  • Y. Kondo, K. Hirano, T. Ito, N. Kikuzawa, R. Kitamura, T. Morishita, H. Oguri, K. Ohkoshi, S. Shinozaki, K. Shinto
    JAEA/J-PARC, Tokai-mura, Japan
  • Z. Fang, Y. Fukui, K. Futatsukawa, K. Ikegami, T. Miyao, K. Nanmo, M. Otani, T. Shibata
    KEK, Ibaraki, Japan
  • T. Hori, Y. Nemoto, Y. Sato
    Nippon Advanced Technology Co., Ltd., Tokai, Japan
  • T. Ishiyama, Y. Sawabe
    Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
  • Y. Ito
    Total Saport System Corp., Naka-gun, Ibaraki, Japan
  • Y. Kato
    Total Support Systems Corporation, Tokai-mura, Naka-gun, Ibaraki, Japan
  • F. Kobayashi
    ULVAC Human Relations, Ltd., Kanagawa, Japan
  • D. Takahashi, R. Tasaki
    KIS, Ibaraki, Japan
  
  We are now upgrading a 3-MeV linac at J-PARC. The old 30-mA RFQ is replaced by a spare one of the J-PARC 50-mA RFQ. The ion source is same as the J-PARC linac’s, therefore, the peak beam current is upgraded from 30 mA to 50 mA. This 3-MeV linac will be used for development of various accelerator components, such as beam dyagnostics devices, laser charge exchange equipments, new MEBT buncher, and so on. In this paper, present status of this 3-MeV test linac is presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-MOPTS046  
About • paper received ※ 30 April 2019       paper accepted ※ 23 May 2019       issue date ※ 21 June 2019  
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TUPRB117 Disk and Washer Coupled Cavity Linac Design and Cold-Model for Muon Linac 1924
 
  • M. Otani, N. Saito
    J-PARC, KEK & JAEA, Ibaraki-ken, Japan
  • K. Futatsukawa, T. Mibe, F. Naito
    KEK, Ibaraki, Japan
  • K. Hasegawa, T. Ito, Y. Kondo, T. Morishita
    JAEA/J-PARC, Tokai-mura, Japan
  • H. Iinuma, Y. Nakazawa
    Ibaraki University, Ibaraki, Japan
  • Y. Iwashita
    Kyoto ICR, Uji, Kyoto, Japan
  • R. Kitamura
    University of Tokyo, Tokyo, Japan
  
  Funding: This work was supported by JSPS KAKENHI Grant Numbers JP15H03666, JP 16H03987, JP18H03707.
A disk and washer (DAW) coupled cavity linac (CCL) has been developed for a middle velocity part in a muon linac at the J-PARC E34 experiment. It will accelerate muons from v/c = 0.3 to 0.7 at an operational frequency of 1296 MHz. In this poster, the cavity designs, beam dynamics designs, and the cold-model measurements will be presented. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-TUPRB117  
About • paper received ※ 30 April 2019       paper accepted ※ 19 May 2019       issue date ※ 21 June 2019  
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TUPTS027 Progress of J-PARC LINAC Commissioning 1990
 
  • Y. Liu
    KEK/JAEA, Ibaraki-Ken, Japan
  • Z. Fang, K. Futatsukawa, T. Miyao, M. Otani, T. Shibata
    KEK, Tokai, Ibaraki, Japan
  • T. Ito, A. Miura, T. Morishita, K. Moriya, K. Okabe, J. Tamura
    JAEA/J-PARC, Tokai-mura, Japan
  
  After energy and intensity upgrade to 400MeV and 50mA respectively, J-PARC linac were ready for 1 MW beam power from RCS. J-PARC is now successfully operated at 50mA/400MeV for 500kW at neutron target, and on the way to 1MW. The next milestones 1.2 and 1.5MW from RCS are relying on feasibility and property of increase of peak current to 60 mA and the pulse width to 600us in linac. Beam studies were carried out at linac to study the initial beam parameters from ion source/RFQ, to find the optimized lattice and matching, to clarify beam loss source and to mitigate the loss/residue dose for the power upgrade.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-TUPTS027  
About • paper received ※ 17 May 2019       paper accepted ※ 23 May 2019       issue date ※ 21 June 2019  
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