Journals

  1. " SDR, EVC, and SDREVC: Limitations and Extensions "
    E.D. Hunter, C. Amsler, H. Breuker, M. Bumbar, S. Chesnevskaya, G. Costantini, R. Ferragut, M. Giammarchi, A. Gligorova, G. Gosta, H. Higaki, C. Killian, V. Kraxberger, N. Kuroda, A. Lanz, M. Leali, G. Maero, C.Malbrunot, V. Mascagna, Y. Matsuda, V.Mackel, S. Migliorati, D. J. Murtagh, A. Nanda, L. Nowak, F. Parnefjord Gustafsson, S. Rheinfrank, M. Rome, M.C. Simon, M. Tajima, V. Toso, S. Ulmer, L. Venturelli, A.Weiser, E. Widmann, Y. Yamazaki and J. Zmeskal
    J. Plasma Phys. 89 (2023) 955890501

  2. " The buncher and the magnetic lens for the LINAC based low energy positron beams at AIST "
    H. Higaki, K. Michishio, A. Ishida, and N. Oshima
    Plasma and Fusion Res. 18 (2023) 1406023

  3. " Efficient positron trapping and extraction with a centre-hole SiC remoderator "
    K. Michishio, H. Higaki, A. Ishida, and N. Oshima
    New J. Phys. 24 (2022) 123039

  4. " Reducing the background temperature for cyclotron cooling in a cryogenic Penning-Malmberg trap "
    C. Amsler, H. Breuker, S. Chesnevskaya, G. Costantini, R. Ferragut, M. Giammarchi, A. Gligorova, G. Gosta, H. Higaki, E. D. Hunter, C. Killian, V. Kletzl, V. Kraxberger, N. Kuroda, A. Lanz, M. Leali, V. Mackel, G. Maero, C. Malbrunot, V. Mascagna, Y. Matsuda, S. Migliorati, D. J. Murtagh, Y. Nagata, A. Nanda, L. Nowak, E. Pasino, M. Rome, M. C. Simon, M. Tajima, V. Toso, S. Ulmer, L. Venturelli, A. Weiser, E. Widmann, T. Wolz, Y. Yamazaki, and J. Zmeskal
    Phys. Plasmas 29 (2022) 083303

  5. " Measurement of the principal quantum number distribution in a beam of antihydrogen atoms "
    B. Kolbinger, C. Amsler, S. Arguedas Cuendis, H. Breuker, A. Capon, G. Costantini, P. Dupre, M. Fleck, A. Gligorova, H. Higaki, Y. Kanai, V. Kletzl, N. Kuroda, A. Lanz, M. Leali, V. Mackel, C. Malbrunot, V. Mascagna, O. Massiczek, Y. Matsuda, D. J. Murtagh, Y. Nagata, A. Nanda, L. Nowak, B. Radics, C. Sauerzopf, M. C. Simon, M. Tajima, H. A. Torii, U. Uggerhoj, S. Ulmer, L. Venturelli, A. Weiser, M. Wiesinger, E. Widmann, T. Wolz, Y. Yamazaki, and J. Zmeskal
    Eur. Phys. J. D 75 (2021) 91

  6. " Accumulation of LINAC based low energy positrons in a buffer gas trap "
    H. Higaki, K. Michishio, K. Hashidate, A. Ishida and N. Oshima
    Appl. Phys. Express 13 (2020) 066003

  7. " Nonneutral electron plasmas confined with a nested potential in a uniform magnetic field "
    H. Higaki, K. Ito, and H. Okamoto
    Jpn. J. Appl. Phys. 58 (2019) 080912

  8. " Antiproton beams with low enrgy spread for antihydrogen production "
    M. Tajima, N. Kuroda, C. Amsler, H. Breuker, C. Evans, M. Fleck, A. Gligorova, H. Higaki, Y. Kanai, B. Kolbinger, A. Lanz, M. Leali, V. Mackel, C. Malbrunot, V. Mascagna, Y. Matsuda, D. Murtagh, Y. Nagata, A. Nanda, B. Radics, M. Simon, S. Ulmer, L. Venturelli, E. Widmann, M. Wiesinger and Y. Yamazaki
    J. Instrum. 14 (2019) P05009

  9. " Monte-Carlo based performance assessment of ASACUSA's antihydrogen detector "
    Y. Nagata, N. Kuroda, B. Kolbinger, M. Fleck, C. Malbrunot, V. Mackel, C. Sauerzopf, M. C. Simon, M. Tajima, J. Zmeskal, H. Breuker, H. Higaki, Y. Kanai, Y. Matsuda, S. Ulmer, L. Venturelli, E. Widmann, and Y. Yamazaki
    Nucl. Instrum. methodes Phys. Res. A 910 (2018) 90

  10. " Imaging antimatter with a Micromegas detector "
    V. Mackel, B. Radics, P. Dupre, H. Higaki, Y. Kanai, N. Kuroda, Y. Matsuda, Y. Nagata, M. Tajima, E. Widmann, and Y. Yamazaki
    Nucl. Instrum. methodes Phys. Res. B 422 (2018) 1

  11. " Simultaneous confinement of low-energy electrons and positrons in a compact magnetic mirror trap "
    H. Higaki, C. Kaga, K. Fukushima, H. Okamoto, Y. Nagata, Y. Kanai, and Y. Yamazaki
    New J. Phys. 19 (2017) 023016

  12. " Autoresonances of m=2 diocotron oscillations in non-neutral electron plasmas "
    K. Gomberoff, H. Higaki, C. Kaga, K. Ito, and H. Okamoto
    Phys. Rev. E 94 (2016) 043204

  13. "Phase Space Volumes of Non-Neutral Electron Plasmas durig Vortex Merging Processes"
    Chikato KAGA, Yukihiro SOGA, Kiyokazu ITO, Hiroyuki HIGAKI, and Hiromi OKAMOTO
    Plasma and Fusion Res. 10 (2015) 1201004

  14. "A source of antihydrogen for in-fligh hyperfine spectroscopy"
    N. Kuroda, S. Ulmer, D.J. Murtagh, S. Van Gorp, Y. Nagata, M. Diermaier, S. Federmann, M. Leali, C. Malbrunot, V. Mascagna, K. Michishio, T. Mizutani, A. Mohri, H. Nagahama, M. Ohtsuka, B. Radics, S. Sakurai, C. Sauerzopf, K. Suzuki, M. Tajima, H.A. Torii, L. Venturelli, B. Wunschek, J. Zmeskal, N. Zurlo, H. Higaki, Y. Kanai, E. Lodi Rizzini, Y. Nagashima, Y. Matsuda, E. Widmann, and Y. Yamazaki
    Nat. Commun. 5 (2014) 3089

  15. " Nonneutral Electron Plasmas Confined in a Compact Magnetic Mirror Trap "
    H. Higaki, S. Sakurai, K. Ito, and H. Okamoto
    Appl. Phys. Express 5 (2012) 106001

  16. " Development of a monoenergetic ultraslow antiproton beam source for high-precision investigation "
    N. Kuroda, H. A. Torii, Y. Nagata, M. Shibata, Y. Enomoto,H. Imao, Y. Kanai, M. Hori, H. Saitoh, H. Higaki, A. Mohri, K. Fujii, C. H. Kim, Y. Matsuda, K. Michishio, Y. Nagashima, M. Ohtsuka, K. Tanaka, and Y. Yamazaki
    Phys. Rev. ST Accel. Beams 15 (2012) 024702

  17. " Controlled Extraction of Ultracold Ions from a Linear Paul Trap for Nanobeam Production "
    Kenji IZAWA, Kiyokazu ITO, Hiroyuki HIGAKI, and Hiromi OKAMOTO
    J. Phys. Soc. Jpn. 79 (2010) 124502

  18. " Synthesis of Cold Antihydrogen in a Cusp Trap "
    Y. Enomoto, N. Kuroda, K. Michishio, C. H. Kim, H. Higaki, Y. Nagata, Y. Kanai, H. A. Torii, M. Corradini, M. Leali, E. Lodi-Rizzini, V. Mascagna, L. Venturelli, N. Zurlo, K. Fujii, M. Ohtsuka, K. Tanaka, H. Imao, Y. Nagashima, Y. Matsuda, B. JuhaLsz, A. Mohri, and Y. Yamazaki
    Phys. Rev. Lett. 105 (2010) 243401

  19. " Electrostatic Oscillations Observed in Non-Neutral Electron Plasmas Confined in a Magnetic Field Gradient "
    H. Higaki, K. Ito, and H. Okamoto
    Plasma and Fusion Res. 5 (2010) 029

  20. " Experimental study of coherent betatron resonances with a Paul trap "
    S. Ohtsubo, M. Fujioka, H. Higaki, K. Ito, H. Okamoto, H. Sugimoto, and S. M. Lund
    Phys. Rev. ST Accel. Beams 13 (2010) 044201

  21. " Density and potential profiles of non-neutral electron plasmas in a magnetic mirror field "
    H. Higaki, K. Fukata, K. Ito, H. Okamoto, and K. Gomberoff
    Phys. Rev. E 81 (2010) 016401

  22. " Measurement of ion cyclotron emissions by use of ICRF heating antennas in LHD "
    K. Saito, H. Kasahara, T. Seki, R. Kumazawa, T. Mutoh, T.Watanabe, F. Shimpo, G. Nomura, M. Osakabe, M. Ichimura, H. Higaki, A. Komori, the LHD experimental group
    Fusion Eng. Design 84 (2009) 1676

  23. " Determination of Transverse Distributions of Ion Plasmas Confined in a Linear Paul Trap by Imaging Diagnostics "
    Kiyokazu ITO , Kenji NAKAYAMA, Shunsuke OHTSUBO, Hiroyuki HIGAKI, and Hiromi OKAMOTO
    Jpn. J. Appl. Phys. 47 (2008) 8017-8025

  24. " Accumulating Low Energy Charged Particles with a Magnetic Mirror Trap and Cyclotron Resonance Heating "
    H. Higaki, K. Ito, K. Kira, and H. Okamoto
    Appl. Phys. Express 1 (2008) 066002

  25. " Observation of spontaneously excited waves in the ion cyclotron frequency range on JT-60U "
    M. Ichimura, H. Higaki, S. Kakimoto, Y. Yamaguchi, K. Nemoto, M. Ishikawa, S. Moriyama and T. Suzuki
    Nucl. Fusion 48 (2008) 035012

  26. " Properties of non-neutral electron plasmas confined with a magnetic mirror field "
    H. Higaki, K. Ito, W. Saiki, Y. Omori, and H. Okamoto
    Phys. Rev. E 76 (2007) 066401

  27. " Eigenmode formations of m = 1 fast Alfven waves in the ion-cyclotron frequency range in the GAMMA 10 central cell"
    Y Yamaguchi, M Ichimura, H.Higaki, S Kakimoto, K Nakagome, K Nemoto1, M Katano, H Nakajima, A Fukuyama and T Cho
    Plasma Phys. Control. Fusion 48 (2006) 1155-1163

  28. " High Frequency Alfven Eigen Modes Observed in LHD"
    H.Higaki, M. Ichimura, D. Inoue, K. Nakagome, Y. Yamaguchi, S. Kakimoto, R. Kumazawa, T. Watari, T. Mutoh, T. Seki, K. Saito
    Plasma and Fusion Res. 1 (2006) 034

  29. " Observation of the Effects of Radially Sheared Electric Fields on the Suppression of Turbulent Vortex Structures and the Associated Transverse Loss in GAMMA 10"
    T.Cho, M.Yoshida, J.Kohagura, M.Hirata, T.Numakura, H.Higaki, H.Hojo, M.Ichimura, K.Ishii, K.Md.Islam, A.Itakura, I.Katanuma, Y.Nakashima, T.Saito, Y.Tatematsu, M.Yoshikawa, Y.Kojima, S.Tokioka, N.Yokoyama, Y.Tomii, T.Imai, V.P.Pastukhov, S.Miyoshi, and GAMMA 10 Group
    Phys. Rev. Lett. 94 (2005) 085002

  30. " Confinement of a Large Number of Antiprotons and Production of an Ultraslow Antiproton Beam "
    N. Kuroda, H. A. Torii, K. Yoshiki Franzen, Z. Wang, S. Yoneda, M. Inoue, M. Hori, B. Juhasz, D. Horvath, H.Higaki, A. Mohri, J. Eades, K. Komaki, and Y. Yamazaki
    Phys. Rev. Lett. 94 (2005) 023401

  31. " Radial compression of protons and H3+ ions in a multiring trap for the production of ultralow energy antiproton beams "
    H.Higaki, N. Kuroda, K. Yoshiki Franzen, Z. Wang, M. Hori, A. Mohri, K. Komaki, and Y. Yamazaki
    Phys. Rev. E 70 (2004) 026501

  32. " The ATHENA antihydrogen apparatus "
    M. Amoretti, et.al (ATHENA collaboration)
    Nucl. Instr. and Meth. A 518 (2004) 679-711

  33. " Study of Action of Unstable AIC Waves on Electrons in a Tandem Mirror Plasma from Measurement of End Loss Electrons"
    T.Saito, E.Yokoyama, Y.Tatematsu, M.Ichimura, H.Higaki, E.Tsuda, T.Yasuoka, and K.Yatsu
    J. Phys. Soc. Jpn. 72 (2003) 1977-1982

  34. " Transport beam line for ultraslow monoenergetic antiprotons "
    K.Yoshiki Franzen, N.Kuroda, H.A.Torii, M.Hori, Z.Wang, H.Higaki, S.Yoneda, B.Juhasz, D.Horvath, A.Mohri, K.Komaki, and Y.Yamazaki
    Rev. Sci. Instrum. 74 (2003) 3305-3311

  35. " ICRF Heating in Magnetic Mirror Plasmas "
    M.Ichimura, H.Higaki, S.Saosaki, H.Kano, S.Kakimoto, K.Tokumoto, Y.Yamaguchi, H.Hojo, M.Inutake, and K.Yatsu
    Plasma Phys. Rep. 28 (2002) 727-733

  36. " Effects of Alfven Ion Cyclotron waves on End-Loss Electrons from the GAMMA10 Tandem Mirror "
    E.Yokoyama, T.Saito, Y.Tatematsu, Y.Imaizumi, K.Nishida, E.Tsuda, T.Yasuoka, M.Ichimura, H.Higaki, and K.Yatsu
    Jpn. J. Appl. Phys. 41 Pt.1 (2002) 3961-3962

  37. " Electron cooling of high-energy protons in a multiring trap with a tank circuit monitoring the electron-plasma oscillations "
    H.Higaki, N.Kuroda, T.Ichioka, K.Yoshiki Franzen, Z.Wang, K.Komaki, Y.Yamazaki, M.Hori, N.Oshima, and A.Mohri
    Phys. Rev. E 65 (2002) 046410

  38. " Stacking of a Low Current Electron Beam in a Harmonic Potential Trap by RF-Repeller "
    A.Mohri, T.Yuyama, H.Tanaka, H.Higaki, Y.Yamazawa, and T.Michishita
    Jpn. J. Appl. Phys. 39 Pt.1 (2000) 6726-6731

  39. " Confinement of nonneutral spheroidal plasmas in multi-ring electrode traps "
    A.Mohri, H.Higaki, H.Tanaka, Y.Yamazawa, M.Aoyagi, T.Yuyama, and T.Michishita
    Jpn. J. Appl. Phys. 37 Pt.1 (1998) 664-670

  40. " The decay instability of Langmuir Waves in the nonneutral electron plasma column "
    Hiroyuki Higaki
    Plasma Phys. Control. Fusion 39 (1997) 1793-1803

  41. " Experiment on diocotron oscillations of spheroidal non-neutral electron plasmas in a multi-ring-electrode trap "
    H.Higaki and A.Mohri
    Phys. Lett. A 235 (1997) 504-507

  42. " Wall and Temperature Effects on Electrostatic Oscillations of Shperoidal Non-neutral Electron Plasmas in the Multi-Ring Electrode Trap "
    Hiroyuki Higaki and Akihiro Mohri
    Jpn. J. Appl. Phys. 36 Pt.1 (1997) 5300-5305

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