Thanks a lot for Y2016. Clear year of 2017, welcome!

Happy New Year of 2017 !


  • e-mail to Eiji Nakamura
  • Brief self-introduction in KEK.

    Go forward for our lives and souls !
  • Personal summary of the serious disaster of eqrthquakes happened in Japan since March 9th, 2011.


    << Representative personal achievements on physics and engineering studies >>

  • New site of the Technical Committee of JSPF
  • Old site of the Technical Committee of JSPF
  • H25kakenB : Reports
  • H26kakenCB: Reports
  • H21kakenC : Reports
  • Level-A : papers
  • Level-B : references
  • Level-C : PADN
  • Particle Applications for Wide uses (PAW)

  • Symposium on middle energy production by compact nuclear fusion, 11:00-13:00 on Nov. 27, 2015 at Nagoya Univ.
  • Special Issue on IJAAPR, related with my research projects.

    ---------
  • 6 patents: JP4543182, JP4697961, JP5447929, JP5448149, JP5565798, JP5590550
  • JJAP 36 (1997) pp.889-895
  • NIM-A 612 (2009) pp.050-055
  • NIM-A 618 (2010) pp.022-029
  • NIM-A 624 (2010) pp.554-559
  • NIM-A 640 (2011) pp.029-037
  • NIM-A 665 (2012) pp.019-024 : (Note: misprinted as published in the year of 2011)
  • JMSJ 35 (2011) pp.096-101
  • IJAAPR 2(1) (2015) pp.008-018
  • IJAAPR 2(2) (2015) pp.001-006
  • IJAAPR Special Issue 2 (2016) pp.001-006
  • IJAAPR Special Issue 2 (2016) pp.013-017

    * JP: Japan Patent; JJAP: Japanese Journal of Applied Physics; NIM-A: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment; JMSJ: Journal of the Magnetic Societ of Japan; IJAAPR: International Journal of Advanced Applied Physics Research.


    News and Outline of my works (2017-02-09)

    Snow falls, second time in Tsukuba, on Feb. 9, 2017.

    I have got flu type-A. Take care enough !

  • (Tragic accident 161122) Large earthquake by the seismic source off Fukushima has attached to East Japan area, Mc = 7.4, MaxSI = 5 weak, with 1.4m-height Tsunami at the port of Sendai harbor.
  • (Tragic accident 161021) Large earthquake has attached to Tottori area, Mc = 6.6, MaxSI = 6 weak.
  • (Caution! 160822) Typhoon #9 has attached with heavy rain and strong wind.

  • (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:160704) Tenth and eleventh papers supported by KAKENHI have been published by the open access academic journal IJAAPR on June 30th, 2016. : (source file ENno.10) (source file ENno.11) : Publishing company site

  • (Caution! 160416) Huge earthquakes had attacked to Kumamoto Area.

  • (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 :
  • (Caution! 150910) The super heavy rain has attacked Prefs. of Ibaraki, Tochigi, Saitama, Fukushima and Miyagi. Several embankments and many people's lives collapsed.

  • (Anno:150721) The symposium S-VII which we are planning has been approved by JSPF, and will be presented at Nagoya Univ. 11:00-13:00 on Nov. 27, 2015. :: --> It's been closed successfully.
  • (Anno:151216) The informal meeting IF-IX which we are planning has been approved by JSPF, was presented at Nagoya Univ. 19:00-20:30 on Nov. 26, 2015. :: --> It's been closed successfully.
  • (Repo:150710) Joint meeting was held at KEK Tokyo on July 9th, 2015.

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

  • (Repo:150611) Maximum field of 50 Tesla and 16 Tesla at centre were achieved by the prototype split magnet for high-energy particle handling.
  • (Anno:150401) Three personal academic research projects were decided to be continued: KAKENHI 25286089, 2661074 and the investigative technical committee in JSPF #14-01.
  • (Anno:150311) 4th investigative technical committee 14-01 of JSPF will be held at KEK Tsukuba on 13th, March, 2015.
  • (memo:150311) It is a memorial day, when large earthquakes and TSUNAMI have hit Japan of a four years ago.
  • (gree:150115) Congratulations ! The academic paper written by Prof. Shiru Inagaki, who is my collaborator of KAKENHI 21540310, 25286089, 26610074 and the investigative technical committee 14-01 of JSPF, et al. has been published by Nature.
  • (gree:150105) Happy new year of 2015 ! Let's go to new prontiers !
  • (Repo:141224) Thanks a lot for participation ! The first seminar has been closed on schedule.
  • (Repo:150311) 3rd investigative technical committee 14-01 of JSPF has been held at Nihon Univ., Surugadai, Tokyo, Japan on 20th, Dec., 2014.
  • (Remi:Anno:141218) Combined seminar will be held at the meeting room #121 in 1st Bldg. of Nihon Univ., Surugadai, Tokyo, Japan, on Dec. 20th (sat.), 2014.
  • Guide for the seminar
  • (Anno:141003) This site has been replaced from www-accps to research server due to the urgent shutdown of www-accps on Sep. 27, 2014.
  • (Repo:140924) 2nd investigative technical committee 14-01 of JSPF has been held at KEK Tsukuba on 19th, Sept., 2014.
  • (Anno:140826) 5th invention has been decided to be authorized by the national patent office on Aug. 8th, 2014. --> JP5590550.
  • (Anno:140604) Combined seminar will be held at the meeting room #121 in 1st Bldg. of Nihon Univ., Surugadai, Tokyo, Japan, on Dec. 20th (sat.), 2014.
  • (News:140407) Third personal research project supported by KAKENHI 26610074 has been authorized on Apr. 1st, 2014.
  • (anno:140401) A technical comittee has been authorised by the Japan Society of Plasma Science and Nuclear Fusion Research on March 31th, 2014.

  • (anno:143028) A technical comittee has been unofficially decided by the Japan Society of Plasma Science and Nuclear Fusion Research.
  • (anno:140214) Two collage students graduated with the related studies, 2014.
  • (anno:140210) Heavy snow attacked on Feb. 8th, 2014. No troubles.
  • (Anno:131224) 4th invention has been decided to be authorized by the national patent office on Jan. 10, 2014. --> JP5448149.
  • (Anno:131218) 3rd invention has been decided to be authorized by the national patent office on Jan. 10, 2014. --> JP5447929.
  • (Anno:131129) A new accelerator concept will be presented at the 30th annual meeting of JSPF at TIT Ookayama on Dec. 5th, 2013.
  • (Anno:131007) I join to new scientific study on multi-dimentional magnetic field formation as a visiting Professor of Tohoku Gakuin University since October 1st, 2013.
  • (Anno:131007) I join to new scientific study on energy production using plasma transport as a visiting Researcher of Nihon University since July 1st, 2013.
  • (Repo:130731) 5th combined seminar on fusion and accelerator studies at KEK Tsukuba on July 29th, 2013.
  • (Repo:130731) Practice experiments for M1 has been carried out at KEK Tsukuba during July 29-30, 2013.
  • (Anno:130620) 1st meeting of the research project : KAKENHI25286089 will be held on July 4th, 2013 at KURRI in Japan.
  • (Anno:130614) 4th combined seminar on fusion and accelerator studies at AIST, Tsukuba, Japan.
  • (Anno:130402) My personal study project has been unofficially decided to be adopted, April 1st, 2013.
  • (Anno:130329) I will join to new scientific study on energy production using high-energy particle accelerators as a visitng Associate Professor of Fukui University since April 1st, 2013.
  • (Patc:130212) 2013 US-Japan FRC symposium, held at Nihon Univ. on Feb. 12, 2013.
  • (Patc:130204) The 3rd workshop on Quantum beam application to Energy production, Research Institute of Nuclear Engineering of Fukui Univ., Tsuruga, Fukui, Japan, Feb. 4, 2013..
  • (Repo:121022) KEK caravan #0106 at Izumi campus of Tohoku Gakuin University on Oct. 19th, 2012. Formal information of KEK caravan ; Formal report as KEK caravan project.
  • (Anno:120814) Whole electricity shutdown will be held between Aug. 16-18 on schedule. All devices in my experimental room cannot be used Aug. 14-20.
  • (Anno:120416) International MegaGauss Science Laboratory Seminar: Proposal of applications of the MegaGauss techniques for higher-energy charged particle handling, presented by Eiji Nakamura, KEK, Acc.-lab., at the Institute for Solid State Physics of Tokyo Univ., Kashiwa, Japan. Formal information on Tokyo Univ. Site
  • (Anno:120412) 3rd combined seminar on fusion and accelerator studies at RIKEN, Wakoh, Japan.
  • (Anno:120322) 2nd combined seminar on fusion and accelerator studies at AIST, Tsukuba, Japan.
  • (Anno:120301) 1st combined seminar on fusion and accelerator studies at Nihon Univ., Ochanomizu, Japan.
  • (News:120229) Snow around experimental room.

  • (News:111110) Sixth paper supported by KAKENHI has been accepted by NIM-A on Nov., 2011. --> Vol.665, pp.19-24.
  • (News:110705) High repetition excitation has been achieved over 0.12 T: 0.22T 25pps(CW) for a practical magnet; 0.15T 50pps(CW) and 0.12T 1Kpps(burst) for a model magnet on July 4th, 2011.
  • (News:110705) *Break the record* 0.12T/0.10us(97%) has been achieved on July 4th, 2011.
  • (anno:110412) Electricity had been stopped since March 11th, 2011, and has been recovered partially for e-mail servers and LAN systems until March 28th, 2011. The experiments with more 10 kW electricity require a special approval at KEK.
  • (anno:110401) My study base places have been recovered and restarted since Mar. 28, 2011. There is no severe problem now, although many minor troubles exist.
  • (News:110330) Serious, heavy and huge series of earthquakes occurred since March 9th, 2011.
  • (News:110330) Fifth paper has been accepted by NIMA on Mar. 11, 2011. --> 640 (2011) pp.29-37.
  • (News:110301) One more invention has been decided to be authorized by the national patent office on Feb. 18, 2011. --> JP4697961.
  • (News:110202) Fourth paper has been accepted by JMSJ on Jan. 17, 2011. --> J. Magn. Soc. Jpn., 35, 96-101 (2011).
  • (News:101202) *Break the record* 0.68T/0.90us(97%) has been achieved for the 29 uH magnet by the 28-ohm driver on Dec. 2, 2010.
  • (News:101116) 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.
  • (News:100928) Third paper has been accepted by NIM-A on Sep. 27, 2010. --> 624 (2010) pp.554-559.
  • (News:100906) First oral report of KAKENHI21430310 in the 34th annual conference on magnetics in Japan, EPOCHAL, Tsukuba, Japan, Sept. 4-7, 2010.
  • (News:100603) One of my inventions has been decided to be authorized by the national patent office in Japan on June 2nd, 2010. --> JP4543182
  • (News:100525) Second paper has been accepted by NIM-A on Feb. 16, 2010. --> 618 (2010) pp.22-29.
  • (News:091112) Patent US 7,570,142 B2 has been authorized on Aug. 4, 2009.
  • (News:091106) Some good performance are obtained on the study of KAKENHI 21540310.
  • (News:090901) First paper has been accepted by NIM-A on Aug. 25, 2009. --> 612 (2009) pp.50-55.
  • (News:090615) Personal research project KAKENHI 21540310 has been authorized and started since June 15, 2009.

    Level-A : papers

    Level-B : references

    Level-C : PADN

    H21kakenC : Reports

    Technical Committee of JSPF

    H25kakenB : Reports

    H26kakenCB : Reports



    Status of Hardware for Experiments (2012-09-08):
  • (Caut:130512) The roof has sprung: Dec. 16 : little from a south drainspout due to Typhoone #26 attack. May. 21 : more than 30L / 1d May. 19 : more than 30L / 1d May. w2 : more than 50L / 1d Apr. w5 : more than 40L / 3d Apr. w4 : more than 20L / 2d Mar. w4 : more than 100L / 3d
  • (Anno:120814) Whole electricity shutdown will be held between Aug. 16-18 on schedule. All devices in my experimental room cannot be used Aug. 14-20.

    Rough values of Electric power consumption for ordinary experiments at PS.EP1 power station.

  • 00.6kW x 04h x 0 = 000kWh/day : LV for PS.
  • 04.0kW x 01h x 0 = 000kWh/day : HV for PS, which depends on individual exp.
  • 00.3kW x 24h x 1 = 007kWh/day : Vacuum system.
  • 00.1kW x 04h x 1 = 001kWh/day : Computers.
  • 02.5kW x 01h x 1 = 060kWh/day : PowerAVR#1 for AC100V.
  • 01.3kW x 02h x 0 = 000kWh/day : PowerAVR#2 for AC200V, used only for HV-experiment.
  • 00.9kW x 24h / 4 = 003kWh/day : Room lights. Half of total lights are used now to save electricity.
  • 03.0kW x 24h x 0 = 000kWh/day : Air conditioners. 3kW for ventilation operation, and 9kW for conditioning.
  • Whole amount of averaged power is predicted 3 kW today.
  • Peak power for whole total systems in this power station is predicted 3 kW today.
  • << Announcements >>

    (anno:130716) The scheduled power line cut-off will be done during Aug. 5-7, 2013.

    (anno:130716) Unexpected power line cut-off has been happened due to thunder struck on July 14th, 2013.

    (anno:120502) Scheduled electric power and water supply cut off from 17th to 18th, August.

    (anno:120502) Some devices have been restarted since April, 2012.

    [A] PS.EP1 power station (197)

    ---(a.1:HL)--- PS of FX-Kicker system :: Working for JSPS-21540310 since Oct. 2, 2010.

    ---(a.2:LL)--- Test-chamber :: working for JSPS-21540310

    ---(a.4:HL)--- CX1171 module :: working for JSPS-21540310 since Dec. 3, 2010.

    ---(a.5:LL)--- Fiber-Pulser system :: working for JSPS-21540310

    ==========================================

    * Operation Record of Air-conditioning machine

    Y2016 : "x", "m", and "-" mean OFF, maintenance, and unrecorded respectively."1"-"4" are numbers of working devices. "a" is short operation by one device. "z" indictates a temporal operation of 4h-cooling and 4h-ventilation modes by one device to save electricity.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Jan.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxx ________: Feb.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Mar.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Apr.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: May
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: June
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x____: July
  • xxaxammaa1 1111111aax xxxxxxxxxx x__: Aug.
  • xxxxaaaaxx axxxxxxxxx xxxxxxxxxx ______: Sep.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Oct.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Nov.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Dec.

    Y2015 : "x", "m", and "-" mean OFF, maintenance, and unrecorded respectively."1"-"4" are numbers of working devices. "a" is short operation by one device. "z" indictates a temporal operation of 4h-cooling and 4h-ventilation modes by one device to save electricity.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Jan.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxx ________: Feb.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Mar.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Apr.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: May
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: June
  • xxxxxxxxxx xxxxaaxxxx axaxxxaaaa a____: July
  • mmaaa11111 111111x111 11111xxxxx x __: Aug.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Sep.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Oct.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Nov.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Dec.

    Y2014 : "x", "m", and "-" mean OFF, maintenance, and unrecorded respectively."1"-"4" are numbers of working devices. "a" is short operation by one device. "z" indictates a temporal operation of 4h-cooling and 4h-ventilation modes by one device to save electricity.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Jan.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxx ________: Feb.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Mar.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Apr.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: May
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: June
  • xxxxxxxxxx xxxxxxaa11 1111111111 1 ____: July
  • amma111111 1111111111 1111zzxxxx x __: Aug.
  • xxxxaxxaxx xxxxxxxxxx xxxxxxxxxx ______: Sep.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Oct.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Nov.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Dec.

    Y2013 : "x", "m", and "-" mean OFF, maintenance, and unrecorded respectively."1"-"4" are numbers of working devices. "a" is short operation by one device. "z" indictates a temporal operation of 4h-cooling and 4h-ventilation modes by one device to save electricity.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Jan.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxx ________: Feb.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Mar.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Apr.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: May
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: June
  • axxxxxxxa1 111axxax11 1111111111 1 ____: July
  • 1mmmmmm111 1111111111 111111x111 1 __: Aug.
  • 1111111111 111111xxxx xxxxxxxxxx ______: Sep.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Oct.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Nov.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Dec.

    Y2012 : "x", "m", and "-" mean OFF, maintenance, and unrecorded respectively."1"-"4" are numbers of working devices. "a" is short operation by one device. "z" indictates a temporal operation of 4h-cooling and 4h-ventilation modes by one device to save electricity.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Jan.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxx ________: Feb.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Mar.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Apr.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: May
  • xxxxxxxxxx xxxxaxxxxx xxxxxxxxxx ______: June
  • xxaaaaxxaa a11111111a xx11x11111 1 ____: July
  • 11111x1111 11111mmmmx 1111111111 1 __: Aug.
  • 1111111111 1111111111 axxxxxxxxx ______: Sep.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Oct.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx ______: Nov.
  • xxxxxxxxxx xxxxxxxxxx xxxxxxxxxx x ____: Dec.

    Troubles in Study- & Experimental-Areas.
  • (110901) (Augsut:middle) The roof has sprung one leak. It will be restored as soon as getting a budget. Typhoon No. 15 has been coming directly on 21th, Sep. 2011.
  • (110419) (100726:minor) Electric Power Cut-OFF by Lightning and Concentrated Heavy Rain shortly at 16:00 on April 19th, 2011.
  • ------------> No troubles at my study areas.
  • (Anno:120814) Whole electricity shutdown will be held between Aug. 16-18 on schedule. All devices in my experimental room cannot be used Aug. 14-20.
  • (110401) My study place was dameged and important materilas had been broken, but my base experiment area has been restored soon. The seismic intensity was 6w.


    ~ My diary ~
  • (150408) Snow falls Tsukuba out of season on April 8th, 2015.
  • (140210) Heavy snow attacked on Feb. 8th, 2014.

  • (130115) Heavy snow attacked on Jan. 15th, 2013.
  • (110601) Retired Eng. Kiyoshi Kitagawa passed away on May 30, 2011. I pray his soul may rest in peace.
  • (110526) I am injured at my home. My lower back is badly and widely swollen, and my both arms are widely scratched on May 25, 2011. One month will be necessary to recover completely, at least. Take care myself and also yourself !
  • (110330) Serious, heavy and huge series of earthquakes occurred since March 9th, 2011. Many people more than 10,000 are dead.
  • (110222) Mr. Chuji Ishida passed away on Feb. 17, 2011. I pray his soul may rest in peace.
  • (110131) It was hard snow and wind at Akita. I spent a hard time due to the cancelation of trains on Jan. 29, 2011.
  • (101125) I feel that I've caught a glimpse of one-tesla class fast-rise kicker system on Nov. 18, 2010.
  • (101014) My mother passed away on Oct. 2nd, 2010.
  • (100830) I have been injured due to the traffic accident at night on Aug. 24, 2010.
  • (100727) My PC has been broken. Therefore, very important and numerous data have been lost. I cannot find what I do now. I will have a short rest to refresh myselt.
  • (100726) 5th paper is now under correction.
  • (100702) 1st paper supported by KAKENHI21540310 is highly appreciated.
  • ............... 2nd paper has been published, improving 1st paper's results.
  • ............... 3rd paper has been submitted, but it may be difficult to be accepted.
  • ............... 4th paper is now under proofreading. This paper is also ...
  • (100614) I got a cold with a high fever and a sore throat. Take care everybody !
  • 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


    E-mail to Eiji Nakamura