hiroyuki higaki

Last Updated :2021/04/06

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
Web Site
E-mail
hhigakihiroshima-u.ac.jp
Self-introduction
Experimental studies on the confinement of charged particles with an electromagnetic field, the production of low energy charged particle beams and the application of the beams for the related plasma physics, beam physics and atomic physics research.

Basic Information

Major Professional Backgrounds

  • 2020/04/01, Hiroshima University, Graduate School of Advanced Science and Engineering, Associate Professor

Academic Degrees

  • Doctor (Human and Environmental Studies), Kyoto University
  • Master, Kyoto University

Educational Activity

  • 【Bachelor Degree Program】School of Science : Physics
  • 【Master's Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Quantum Matter Program
  • 【Doctoral Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Quantum Matter Program

Research Fields

  • Mathematical and physical sciences;Plasma science;Plasma science
  • Mathematical and physical sciences;Physics;Atomic / Molecular / Quantum electronics
  • Mathematical and physical sciences;Physics;Particle / Nuclear / Cosmic ray / Astro physics

Research Keywords

  • plasma physics
  • beam physics
  • atomic physics

Educational Activity

Course in Charge

  1. 2021, Undergraduate Education, Second Semester, MechanicsB
  2. 2021, Undergraduate Education, Second Semester, Introduction of Physics
  3. 2021, Undergraduate Education, First Semester, Special Study for Graduation A
  4. 2021, Undergraduate Education, Second Semester, Special Study for Graduation B
  5. 2021, Graduate Education (Master's Program) , 4Term, Exercises in Basic Sciences of Matter B
  6. 2021, Graduate Education (Master's Program) , First Semester, Seminar on Basic Sciences of Matter A
  7. 2021, Graduate Education (Master's Program) , Second Semester, Seminar on Basic Sciences of Matter B
  8. 2021, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Basic Sciences of Matter
  9. 2021, Graduate Education (Master's Program) , 1Term, Exercises in Basic Sciences of Matter A
  10. 2021, Graduate Education (Master's Program) , 2Term, Exercises in Basic Sciences of Matter A
  11. 2021, Graduate Education (Master's Program) , 3Term, Exercises in Basic Sciences of Matter B
  12. 2021, Graduate Education (Master's Program) , 2Term, Beam Physics
  13. 2021, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
  14. 2021, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter

Research Activities

Academic Papers

  1. Measurement of the principal quantum number distribution in a beam of antihydrogen atoms, Eur. Phys. J. D 75 (2021) 91, 75, 91-1-91-14, 20210308
  2. Accumulation of LINAC based low energy positrons in a buffer gas trap, Applied Physics Express, 13(6), 066003-1-066003-4, 20200528
  3. Non-neutral electron plasmas confined with a nested potential in a uniform magnetic field, 58(8), 080912-1-080912-4, 20190802
  4. Antiproton beams with low enrgy spread for antihydrogen production, Journal of Instrumentation, 14, P05009-1-P05009-12, 20190513
  5. Monte-Carlo based performance assessment of ASAUSA's antihydrogen detector, Nucl. Instrum. Methods A, 910, 90-95, 2018
  6. Imaging antimatter with a Micromegas detector, Nucl. Instrum. Methods B, 422, 1-6, 20180302
  7. Simultaneous confinement of low-energy electrons and positrons in a compact magnetic mirror trap, New J. Phys., 19(02), 023016-1-023016-9, 20170203
  8. Autoresonances of m=2 diocotron oscillations in non-neutral electron plasmas, Phys. Rev. E, 94(04), 043204-1-043204-6, 20161024
  9. Phase Space Volumes of Non-Neutral Plasmas during Vortex Merging Processes, Plasma and Fusion Res., 10, 1201004-1-1201004-3, 201501
  10. A source of antihydrogen for in-flight hyperfine spectroscopy, NATURE COMMUNICATIONS, 5, 201401
  11. Nonneutral Electron Plasmas Confined in a Compact Magnetic Mirror Trap, APPLIED PHYSICS EXPRESS, 5(10), 201210
  12. Development of a monoenergetic ultraslow antiproton beam source for high-precision investigation, PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 15(2), 20120217
  13. Controlled Extraction of Ultracold Ions from a Linear Paul Trap for Nanobeam Production, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 79(12), 201012
  14. Synthesis of Cold Antihydrogen in a Cusp Trap, PHYSICAL REVIEW LETTERS, 105(24), 20101207
  15. Electrostatic Oscillations Observed in Non-Neutral Electron Plasmas Confined in a Magnetic Field Gradient, Plasma Fusion Res., 5(-), 029 (1-3), 20100701
  16. Experimental study of coherent betatron resonances with a Paul trap, PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 13(4), 201004
  17. Density and potential profiles of non-neutral electron plasmas in a magnetic mirror field, PHYSICAL REVIEW E, 81(1), 201001
  18. Measurement of ion cyclotron emissions by use of ICRF heating antennas in LHD, FUSION ENGINEERING AND DESIGN, 84(7-11), 1676-1679, 200906
  19. Determination of Transverse Distributions of Ion Plasmas Confined in a Linear Paul Trap by Imaging Diagnostics, JAPANESE JOURNAL OF APPLIED PHYSICS, 47(10), 8017-8025, 200810
  20. Accumulating low energy charged particles with a magnetic mirror trap and cyclotron resonance heating, APPLIED PHYSICS EXPRESS, 1(6), 200806
  21. Observation of spontaneously excited waves in the ion cyclotron frequency range on JT-60U, Nuclear Fusion, 48, 035012-1-035012-7, 20080207
  22. Properties of non-neutral electron plasmas confined with a magnetic mirror field, PHYSICAL REVIEW E, 75(6), 200706
  23. High Frequency Alfven Eigen Modes Observed in LHD, Plasma and Fusion Reserch, 1, 034, 20060601
  24. Confinement of a Large Number of Antiprotons and Production of an Ultraslow Antiproton Beam, Phys. Rev. Lett., 94, 023401-1-023401-4, 200501
  25. Radial compression of protons and H3+ ions in a multiring trap for the production of ultralow energy antiproton beams, Phys. Rev. E, 70, 026501-1-026501-5, 200408
  26. Electron cooling of high-energy protons in a multiring trap with a tank circuit monitoring the electron-plasma oscillations, Phys. Rev. E, 65, 046410-1-046410-5, 200204
  27. The decay instability of Langmuir Waves in the nonneutral electron plasma column, Plasma Phys. Control. Fusion, 39(11), 1793-1803, 199711
  28. Experiment on diocotron oscillations of spheroidal non-neutral electron plasmas in a multi-ring-electrode trap, Physics Letters A, 235, 504-507, 199711
  29. Wall and Temperature Effects on Electrostatic Oscillations of Shperoidal Non-neutral Electron Plasmas in the Multi-Ring Electrode Trap, Jpn. J. Appl. Phys., 36 Pt.1(8), 5300-5305, 199708
  30. Accumulating laser-coolable ions in a linear Paul trap for ultrahigh-density beam dynamics experiment, J. Phys. Conf. Ser., 1350, 012126-1-012126-5, 20191210
  31. Experimental observation of low-order collective oscillation modes in a strong-focusing lattice, J. Phys. Conf. Ser., 1350, 012125-1-012125-6, 20191210
  32. Simulations on Mixing Charged Particles in a Nested Penning Trap, JPS Conf. Proc., 18, 011013-1-011013-6, 20171124
  33. Progress of antihydrogen beam production using a double cusp trap, JPS Conf. Proc., 18, 011007-1-011007-10, 20171124
  34. Autoresonances with a Damping Force, AIP Conference Proceedings, 1668, 050006-1-050006-6, 20150629
  35. Production of Ar^q+ ions with a Tandem Linear Paul Trap, AIP Conference Proceedings, 1668, 040006-1-040006-6, 20150629
  36. A Low Energy Positron Accumulator for the Plasma Confinement in a Compact Magnetic Mirror Trap, AIP Conference Proceedings, 1668, 040005-1-040005-6, 20150629
  37. Towards the production of anti-hydrogen beams, AIP Conf. Proc., 1521, 134-143, 201303
  38. Mismatch Induced Oscillations of Space Charge Dominated Beams in a Uniform Focusing Channel, 1336-1338, 20100501
  39. A Tank Circuit Monitoring a Large Number of Antiprotons in MUSASHI for the Production of Low Energy Antiproton Beams, Proceedings of IPAC’10 Kyoto Japan, 948-950, 20100501
  40. A tandem linear Paul trap as an ion source, J. Phys. Conf. Ser., 163, 012102-1-012102-4, 200906
  41. Electrons Confined with an Axially Symmetric Magnetic Mirror Field, AIP Conf. Proc., 1037, 106-114, 200808
  42. Visible Light and Ha Imaging of Mirror Confined Plasmas in the Central Cell of GAMMA 10, Transactions of Fusion Science and Technology, 51(2T), 361, 20070201
  43. Axial resonances of Ar+ ions observed in a linear Paul trap, HYPERFINE INTERACTIONS, 174(1-3), 77-82, 200701
  44. On the Possibility of Non-Neutral Antiproton Plasmas and Antiproton-Positron Plasmas, AIP Conf. Proc., 793, 351-360, 200510

Invited Lecture, Oral Presentation, Poster Presentation

  1. Progress towards the confinement of a low energy electron-positron plasma in a magnetic mirror trap, Hiroyuki Higaki, C.Kaga, K.Fukushima, H.Okamoto, Y.Nagata, Y.Kanai, Y.Yamazaki, 12th International Workshop on Non-Neutral Plasmas, 2017/07/11, With Invitation, English, Lawrence University, Appleton, WI USA
  2. Anti-particle Accumulation for Low Energy Exotic Beams, H. Higaki, ASACUSA-MUSASHI, COOL15, 2015/09/28, With Invitation, English, Thomas Jefferson National Accelerator Facility Newport News, VA, USA
  3. A Low Energy Positron Accumulator for the Plasma Confinement in a Compact Magnetic Mirror Trap, H.Higaki, C. Kaga, K. Nagayasu, H. Okamoto, Y. Nagata, Y. Kanai, and Y. Yamazaki, 11th International Workshop on Non-Neutral Plasmas, 2014/12/01, Without Invitation, English, H. Higaki, K. Ito, H. Himura, H. Saitoh, Y. Soga, A. Sanpei, and Y. Yatsuyanagi, Sunport Hall Takamatsu, Japan, A low energy positron accumulator was constructed at RIKEN for the purpose of confining an electron-positron plasma. The use of 5 mCi 22Na RI source with a standard solid Ne moderator and N2 buffer gas cooling resulted in a low energy positron yield of ~ 3 x 10^5 e+/s. So far, 2 x 10^6 positrons have been accumulated in 120s.
  4. Towards the production of anti-hydrogen beams, H. Higaki, ASACUSA-MUSASHI, 10th International Workshop on Non-neutral Plasmas, 2012/08/27, With Invitation, English, MPI for Plasma physics, Greifswald, Germany