Reports on Personal Study

supported by the Grant-in-Aid of Japan Society for the Promotion of Science (JSPS), KAKENHI in Japan.
"Development of Tesla kicker system and improvement of beam quality" : KAKENHI 25286089

e-mail to Eiji Nakamura


  • (News:160704) Five articles supported by KAKENHI have been published by the open access academic journal IJAAPR on June 30th, 2016. Publishing company site
  • (News:151104) Ninth paper supported by KAKENHI has been published by the open access academic journal IJAAPR on Dec. 15th, 2015. --> IJAAPR Vol.2 Issue 2 (2015) pp.1-6. : (source file) : Publishing company site

  • (News:150618) Eighth paper supported by KAKENHI has been published by the open access academic journal IJAAPR on June 15th, 2015. (source file)

  • (Anno:131129) A new accelerator concept, which is based on this study, will be presented at the 30th annual meeting of JSPF at TIT Ookayama on Dec. 5th, 2013.
  • (Repo:131129) Discussion for experiment plan at Nihon Univ. High-field experiment will be held at Funabashi, Japan, on Feb. , 2014.
  • (Anno:130904) Discussion for experiment plan will be held at KURRI, Japan on Sep. 11, 2013.
  • (Anno:130904) Discussion for application plan will be held at Fukui Univ., Japan on Sep. 10, 2013.
  • (Anno:130531) 1st meeting will be held at KURRI, Japan on July 4, 2013: done on schedule.
  • (Repo:130716) Pre-meeting was held at Kyoto Univ., Kumatori, Ohsaka, Japan on July 2-4, 2013.
  • (Repo:130628) Pre-meeting was held at Tohokugakuin Univ., Tagajoh, Miyagi, Japan on June 28, 2013.
  • (Repo:0628) Pre-meeting was held at Akita Pref. Univ., Ugohonjoh, Akita, Japan on June 27, 2013.


    *** Hyper Kicker System ***

    Records Now:
  • Fast rise : 100 ns (97%) at 0.12 T; 120 ns (97%) at 0.22 Tesla.
  • High field : 0.68 Tesla in 0.9 us (97%).
  • High Repetition : Stable results were obtained at 25pps(CW) for a practical magnet; 50pps(CW) and 1Kpps(burst) for a model magnet.

    Published papers & Our related patents :
  • JP4543182 (July 9th, 2010) : Fundamental principle.
  • JP4697961 (March 11th, 2011) : Related patent for magnetization.
  • NIM-A 612 (2009) pp. 050 - 055 : Fundamental theory and demonstration results.
  • NIM-A 618 (2010) pp. 022 - 029 : Application to multi-turn coil magnets.
  • NIM-A 624 (2010) pp. 554 - 559 : Discussion of high voltage constibution.
  • NIM-A 640 (2011) pp. 029 - 037 : Corrected theory, application to septa, and proposal of septum-free beam handling.
  • NIM-A 665 (2012) pp. 019 - 024 : Super fast rise kicker using a waveform superimposing method described in NIM-A 640.
  • JMSJ, 35 (2011) pp. 96-101 : Whole scheme for development of kicker systems.

    (*1 NIM-A : Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detecters and Associated Equipment. *2 JMSJ : Journal of the Magnetic Society of Japan.)


    [B21] 2010.09.06: First oral report: Eiji Nakamura (KEK acc.), Masakazu Takayama (Akita Pref. Univ.), Shin Yabukami, Tomofumi Ichinomiya and Sho Nakamura (Tohoku Gakuin Univ.), "Development of Fast-rise and High-field Kicker Magnet System for Particle Accelerators", in: Proceedings of the 34th Annual Conference on MAGNETICS in Japan, Tsukuba International Conference Center, Tsukuba, Ibaraki, Japan, Sep. 4-7, 2010, p.311.
  • To the offical site.

    [B22] 2010.09.28: Third paper has been accepted by NIM-A on Sep. 27, 2010. --> NIM-A, 624 (2010) pp.554-559.
  • To the retrieval site of ScienceDirect"

    [B23] 2010.11.16: 0.46T/0.88us(97%) has been achieved for the 22.2 uH nominal inductance magnet excited by the 28-ohm driver on Nov. 16, 2010.

    [B24] 2010.11.18: 0.54T/0.86us(97%) has been achieved for the 28 uH magnet by the 28-ohm driver on Nov. 18, 2010.

    [B25] 2010.11.29: 0.62T/0.82us(97%) has been achieved for the 29 uH magnet by the 28-ohm driver on Nov. 29, 2010.

    [B26] 2010.12.02: 0.68T/0.9us(97%) has been achieved for the 29 uH magnet by the 28-ohm driver on Dec. 2, 2010.

    [B27] 2010.12.03: technical meeteing at KEK Tokyo on Dec. 3, 2010.

    [B28] 2010.12.03: attend the progressive meeting "Tela-scale physics frontier at LHC", presented at Tokyo Univ. during Dec. 3 and 4, 2010.

    [C01] 2011.01.28: technical meetings at Akita Pref. Univ. and TDK Akita.

    [C02] 2011.02.02: Fourth paper has been accepted by JMSJ on Jan. 17, 2011. --> Journal of the Magnetic Society of Japa, Vol. 35 (2011) pp.96-101.

    [C03] 2011.03.30: Fifth paper has been accepted by NIM-A on March 11th, 2011. --> 640 (2011) pp.29-37.

    [C04] 2011.07.05: 50pps high repetition rate operation has been achieved on June 21st, 2011.

    [C05] 2011.07.05: 0.12T/0.1us(97%) has been achieved on July 4th, 2011.

    [C06] 2011.07.05: 1Kpps high repetition rate operation in burst mode has been achieved on July 4th, 2011.

    [C07] 2012.02.01: Sixth paper has been accepted by NIM-A on November, 2011. --> 665 (2012) pp.19-24.


    News : Some of good perfomance are observed. (An interim report, summarized on Nov. 6th, 2009.)


  • News: 0.68T/0.9us(97%) has been achieved for the 28.7 uH nominal inductance magnet by the 28-ohm driver on Dec. 2, 2010.


  • News: 0.12T/0.1us(97%) has been achieved on July 4th, 2011.


  • To a personal site of Eiji Nakamura.
  • *** Level- A : Representative published papers.
  • *** Level-B : References.
  • *** Level-C : PADN (Particle Accelerator Development Notes).
  • *** KAKENHI 21540310.
  • *** KAKENHI 25286089.
  • *** KAKENHI 26610074.
  • *** Technical Committee of JSPF.
  • Particle Applications for Wide uses (PAW)
  • To KEK-PS Kicker Group site.
  • To the KEK-PS site.
  • To 500MeV p-AR Site
  • To KEK-PS-MR EP1 Radiation
  • Trip Report to CERN-PS Septum Group.
  • To the ERL site.
  • To the KEK official site.
  • Old Version URL
  • Personal Information ------