Author: Okamura, K.
Paper Title Page
TUPMR021 A Racetrack-shape Fixed Field Induction Accelerator for Giant Cluster Ions 1278
  • K. Takayama, T. Adachi, K. Okamura, M. Wake
    KEK, Ibaraki, Japan
  • T. Adachi, K. Okamura
    Sokendai, Ibaraki, Japan
  • Y. Iwata
    AIST, Tsukuba, Japan
  • Y. Yuri
    JAEA/TARRI, Gunma-ken, Japan
  At KEK, circular induction accelerators employing an induction acceleration system, which is characterized by a simple fact of functional separation of acceleration and beam confinement, have been developed since 2000. The slow cycling induction synchrotron (IS) was demonstrated using the KEK 12 GeV PS in 2006, where superbunch formation and focusing-free transition energy crossing were realized*. The fast cycling IS called the KEK digital accelerator is under operation since 2012**, where bunch squeezing and splitting/merging never realized in RF synchrotrons have been demonstrated, as well as acceleration in a wide range of ion mass to charge ratio. Based on the experiences, a racetrack-shape fixed field induction accelerator (induction microtron)*** that can accelerate giant cluster ions such as C-60 or Si-100, to high energy beyond that of electrostatic accelerators has been designed. Its full story and status of R&D work will be presented at the conference.
* K.Takayama, Induction Accelerators (Springer, 2010), Chapter 11,12
** K.Takayama et al., Phys. Rev. ST-AB 17, 010101(2014).
*** K.Takayama, T.Adachi, et al., Phys. Rev. ST-AB 18, 050101(2015).
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMR021  
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WEPMY036 Laser Ablation Ion Source for Highly Charge-State Ion Beams 2632
SUPSS037   use link to see paper's listing under its alternate paper code  
  • N. Munemoto, K. Horioka
    TIT, Yokohama, Japan
  • K. Okamura, S. Takano, K. Takayama
    KEK, Ibaraki, Japan
  • K. Okamura, K. Takayama
    Sokendai, Ibaraki, Japan
  The KEK Laser ablation ion source (KEK-LAIS) is un-der development in order to generate highly ionized metal and fully ionized carbon ions for future applica-tions*. Laser ablation experiments have been carried out by using Nd-YAG laser (0.75 J/pulse, 20 ns) at the KEK test bench. Basic parameters such as a charge-state spec-trum and momentum spectrum of the plasma and extract-ed ion beam current have been obtained. Extraction of C ions from the LAIS is described.
* N.Munemoto et al., Rev. Sci. Inst. 85, 02B922 (2014)
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMY036  
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