Tohru Takahashi

Last Updated :2024/06/04

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor (Special Recognition)
E-mail
tohru-takahashihiroshima-u.ac.jp

Basic Information

Academic Degrees

  • Ph.D. in Physics, Nagoya University

Research Fields

  • Mathematical and physical sciences;Physics;Particle / Nuclear / Cosmic ray / Astro physics

Research Keywords

  • laser
  • ILC
  • High Energy Physics

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2024, Liberal Arts Education Program1, 2Term, Science and Radiation
  2. 2024, Undergraduate Education, 4Term, Introduction to Physics B
  3. 2024, Undergraduate Education, 4Term, Advanced Physics
  4. 2024, Undergraduate Education, First Semester, Special Study for Graduation A
  5. 2024, Undergraduate Education, Second Semester, Special Study for Graduation B
  6. 2024, Undergraduate Education, Second Semester, Media Literacy and Science
  7. 2024, Undergraduate Education, First Semester, Seminar on Science Communication I
  8. 2024, Undergraduate Education, Second Semester, Seminar on Science Communication II
  9. 2024, Graduate Education (Master's Program) , 2Term, High Energy Physics
  10. 2024, Graduate Education (Master's Program) , First Semester, Exercise in Physics I
  11. 2024, Graduate Education (Master's Program) , Second Semester, Exercise in Physics II
  12. 2024, Graduate Education (Master's Program) , First Semester, Special Exsecise in Physics A
  13. 2024, Graduate Education (Master's Program) , Second Semester, Special Exsecise in Physics B
  14. 2024, Graduate Education (Master's Program) , Academic Year, Special Research in Physics
  15. 2024, Graduate Education (Doctoral Program) , Academic Year, Special Research in Physics
  16. 2024, Graduate Education (Master's Program) , First Semester, Seminar on Basic Sciences of Matter A
  17. 2024, Graduate Education (Master's Program) , Second Semester, Seminar on Basic Sciences of Matter B
  18. 2024, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Basic Sciences of Matter
  19. 2024, Graduate Education (Master's Program) , 1Term, Exercises in Basic Sciences of Matter A
  20. 2024, Graduate Education (Master's Program) , 2Term, Exercises in Basic Sciences of Matter A
  21. 2024, Graduate Education (Master's Program) , 3Term, Exercises in Basic Sciences of Matter B
  22. 2024, Graduate Education (Master's Program) , 4Term, Exercises in Basic Sciences of Matter B
  23. 2024, Graduate Education (Master's Program) , 3Term, Photon Physics
  24. 2024, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
  25. 2024, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter

Award of Education

  1. 4084/8.

Research Activities

Academic Papers

  1. Errarum to: Light-by-Light Scattering in a Photon-Photon Collider, European Physical Journal C, 82, 404-404, 202205
  2. A conventional positron source for international linear collider, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 672, 52-56, 20120421
  3. Production of gamma rays by pulsed laser beam Compton scattering off GeV-electrons using a non-planar four-mirror optical cavity, JOURNAL OF INSTRUMENTATION, 7, 201201
  4. $\gamma \gamma$ Collider, Nuclear Instruments and Methods in Physics Research, A472, 4-11, 20010401
  5. Experiment of positron generation using a crystal target at the KEK electron-positron linac, Nuclear Instruments and Methods in Physics Research, B173, 104-111, 20010401
  6. Gold-plated processes at photon colliders, Nuclear Instruments and Methods in Physics Research, A472(1), 100-120, 20010401
  7. The Multi-Configuration Dirac-Fock Calculation of the Low-Lying Levels of Sm, Euro physical Jounal, D14, 20010401
  8. Parametric X-radiation and diffracted transition radiation at REFER electron ringl, Nuclear Instruments and Methods in Physics Research, B173, 241-252, 20010401
  9. Toward the experimental observation of nonlinear effects in laser-electron beam scattering, Review of Scientific Instruments, 71(2), 369-375, 20000401
  10. Search for charmless hadronic decays of B mesons with the SLD detector, Physical Review, D62, 71101, 20000401
  11. Enhanced type-B coherent effect in collimated electron-positron photopriduction from Si Crystal, Physics Letters, A271, 110-114, 20000401
  12. Hyperfine Constants and Tensor Polarizabilities of 4f66s6p9G0-6 States in Sm I, Journal of Physical Society of japan, 68(6), 1877-18882, 19990401
  13. Time dependent B/s0 anti-B/s0 mixing using inclusive and semileptonic B decays at SLD, Nuclear Instruments and Methods in Physics Research, A446, 53-58, 19990401
  14. Direct measurement of A(b) in Z0 decays using charged kaon tagging, Physical Review Letters, 83, 1902-1907, 19990401
  15. Direct measurement of A(b) and A(c) at the Z0 pole using a lepton tag, Physical Review Letters, 83, 3384-3389, 19990401
  16. First study of the structure of e+ e- $\to$ b anti-b g events and limits on the anomalous chromomagnetic coupling of the b-quark, Physical Review, D60, 92002, 19990401
  17. Physics results from SLD using the CRID, Nuclear Instruments and Methods in Physics Research, A433, 314-327, 19990401
  18. Positron Produection in Tungsten Crystals by 1.2 GeV Channeling Electrons., Physical Review Letters, 80(7), 1437-1440, 19980401
  19. Stark and Zeeman Spectroscopies of Sm I from Metastable-State Atomic Beam Produced by Electric Dishcharge, Journal of Physical Society of japan, 67, 1213-1219, 19980401
  20. Observation of monocromatic and tunable hard X radiation from Stratified Si Single Crystals, Nuclear Instruments and Methods in Physics Research, B145, 50, 19980401
  21. Investigation of posirton genaration by relativistic electron in aligined crystals, Nuclear Instruments and Methods in Physics Research, B145, 25, 19980401
  22. Measurement of R(b) using a vertex mass tag, Physical Review Letters, 80, 660-665, 19980401
  23. Stark and Zeeman spectroscopies of 4f66s6p 7GJ levels in Sm I under external electric and magnetic fields, Z Phys, D42, 243, 19970401
  24. Smulations of theinteraction region in a photon-photon collder, Nuclear Instruments and Methods in Physics Research, A397, 458-464, 19970401
  25. Measuring the two-photon decay width of intermediate-mass Higgs bosons at a photon-photon collider., Physical Review, D56, 1723-1729, 19970401
  26. Measurement of the tau neutrino helicity and Michel parameters in polarized e+ e- collisions, Physical Review Letters, 78, 4691-4696, 19970401
  27. Measurement of the B+ and B0 lifetimes using topological reconstruction of inclusive and semileptonic decays, Physical Review Letters, 79, 590-596, 19970401
  28. Measurement of the B hadron energy distribution in Z0 decays, Physical Review, D56, 5310-5319, 19970401
  29. MEASUREMENT OF LEADING PARTICLE EFFECTS IN DECAYS OF Z0 BOSONS INTO LIGHT FLAVORS., Physical Review Letters, 78, 3442-3446, 19970401
  30. Measurement of hyperfine, structure constants, g values and tensor polarizability fo excited states of Sm I, Zeitschrift fur Physik, D39, 209-216, 19970401
  31. FIRST MEASUREMENT OF THE LEFT-RIGHT CHARGE ASYMMETRY IN HADRONIC Z BOSON DECAYS AND A NEW DETERMINATION OF $sin^2\theta_W(EFF)., Physical Review Letters, 78, 17-21, 19970401
  32. AN IMPROVED MEASUREMENT OF THE LEFT-RIGHT Z0 CROSS-SECTION ASYMMETRY., Physical Review Letters, 78, 2075-2079, 19970401
  33. A STUDY OF THE ORIENTATION AND ENERGY PARTITION OF THREE JET EVENTS IN HADRONIC Z0 DECAYS., Physical Review, D, 2533-2545, 19970401
  34. A TEST OF THE FLAVOR INDEPENDENCE OF STRONG INTERACTIONS., Physical Review, D53, 2271-2275, 19960401
  35. Computer Search of Rare-earth Atomic Levels for Atomic Parity Violation Experiments., Journal of Physical Society of japan, 65(8), 2722-2723, 19960401
  36. FACTORIAL AND CUMULANT MOMENTS IN E+ E- --- HADRONS AT THE Z0 RESONANCE., Physics Letters, B371(1), 149-156, 19960401
  37. FIRST STUDY OF RAPIDITY GAPS IN E+ E- ANNIHILATION., Physical Review Letters, 76(1), 4886-4890, 19960401
  38. Influence of e+e- pair creation in collision of laser and high energy photons for photon-photon colliders., Nuclear Instruments and Methods in Physics Research, A373, 185-193, 19960401
  39. MEASUREMENT OF THE CHARGED MULTIPLICITIES IN B, C AND LIGHT QUARK EVENTS FROM Z0 DECAYS., Physics Letters, B368, 475-485, 19960401
  40. MEASUREMENTS OF R(B) WITH IMPACT PARAMETERS AND DISPLACED VERTICES., Physical Review, D53, 1023-1938, 19960401
  41. Search of Feasible Level Schemes for Atomic Parity Violation Experiments using Rare-earth Elements., Journal of Science of the Hiroshima University= Series A, 60(1), --, 19960401
  42. Systematic Study of Fine and Hyperfine Structures in Pr I by Doppler-Free Atomic-Beam Spectroscopy., Journal of the Physical Society of Japan, 65(10), 3180-3185, 19960401
  43. A SEARCH FOR JET HANDEDNESS IN HADRONIC Z0 DECAYS., Physical Review Letters, 74, 1512-1516, 19950401
  44. COMPARISON OF A NEW CALCULATION OF ENERGY-ENERGY CORRELATIONS WITH E+ E- --HADRONS DATA AT THE Z0 RESONANCE., Physical Review, D52, 4240-4244, 19950401
  45. FIRST MEASUREMENT OF THE T ODD CORRELATION BETWEEN THE Z0 SPIN AND THE THREE JET PLANE ORIENTATION IN POLARIZED Z0 DECAYS TO THREE JETS., Physical Review Letters, 75, 4173-4177, 19950401
  46. MEASUREMENT OF A(B) AND A(C) FROM THE LEFT-RIGHT FORWARD - BACKWARD ASYMMETRY OF LEPTONS IN HADRONIC EVENTS AT THE Z0 RESONANCE., Physical Review Letters, 74, 2895-2899, 19950401
  47. MEASUREMENT OF A(B) FROM THE LEFT-RIGHT FORWARD - BACKWARD ASYMMETRY OF B QUARK PRODUCTION IN Z0 DECAYS USING A MOMENTUM WEIGHTED TRACK CHARGE TECHNIQUE., Physical Review Letters, 74, 2890-2894, 19950401
  48. MEASUREMENT OF ALPHA-S (M(Z)**2) FROM HADRONIC EVENT OBSERVABLES AT THE Z0 RESONANCE., Physical Review, D51, 962-984, 19950401
  49. MEASUREMENT OF THE AVERAGE B HADRON LIFETIME IN Z0 DECAYS USING RECONSTRUCTED VERTICES., Physical Review Letters, 75, 3624-3628, 19950401
  50. MEASUREMENT OF THE LEFT-RIGHT FORWARD - BACKWARD ASYMMETRY FOR CHARM QUARKS WITH D*+ AND D+ MESONS., Physical Review Letters, 75, 3609-3613, 19950401
  51. MEASUREMENT OF THE TAU LIFETIME AT SLD., Physical Review, D52, 4828-4837, 19950401
  52. Parametric X Radiation from Thick Crystals, Physical Review, E51, 6305-6308, 19950401
  53. POLARIZED BHABHA SCATTERING A PRECISION MEASUREMENT OF THE ELECTRON NEUTRAL CURRENT COUPLINGS., Physical Review Letters, 74, 2880-2884, 19950401
  54. MEASUREMENT OF ALPHA-S FROM ENERGY-ENERGY CORRELATIONS AT THE Z0 RESONANCE., Physical Review, D50, 5580-5590, 19940401
  55. MEASUREMENT OF THE CHARGED MULTIPLICITY OF Z0 --- B ANTI-B EVENTS., Physical Review Letters, 72, 3145-3149, 19940401
  56. PRECISE MEASUREMENT OF THE LEFT-RIGHT CROSS-SECTION ASYMMETRY IN Z BOSON PRODUCTION BY E+ E- COLLISIONS., Physical Review Letters, 73, 25-29, 19940401
  57. A MEASUREMENT OF ALPHA-S FROM JET RATES AT THE Z0 RESONANCE., Physical Review Letters, 71, 2528-2532, 19930401
  58. FIRST MEASUREMENT OF THE LEFT-RIGHT ASYMMETRY IN Z BOSON PRODUCTION., Modern Physics Letters, A8, 2237-2248, 19930401
  59. FIRST MEASUREMENT OF THE LEFT-RIGHT CROSS-SECTION ASYMMETRY IN Z BOSON PRODUCTION BY E+ E- COLLISIONS., Physical Review Letters, 70, 2515-2520, 19930401
  60. CHARGE ASYMMETRY OF HADRONIC EVENTS IN E+ E- ANNIHILATION AT S**(1/2) =57.9-GEV., Physics Letters, B255, 613-622, 19910401
  61. A SEARCH FOR A B-PRIME QUARK WITH FLAVOR CHANGING NEUTRAL CURRENT DECAY MODES AT TRISTAN., Physics Letters, B234, 197--, 19900401
  62. A SEARCH FOR CHARGED HIGGS BOSONS AT TRISTAN., Physics Letters, B240, 513-518, 19900401
  63. A SEARCH FOR INCLUSIVE PRODUCTION OF HEAVY STABLE PARTICLES BY THE TOPAZ DETECTOR AT TRISTAN., Physics Letters, B249, 336-340, 19900401
  64. A STUDY OF PION PAIR PRODUCTION IN TWO PHOTON PROCESS., Physics Letters, B234, 185--, 19900401
  65. MEASUREMENT OF THE TOTAL HADRONIC CROSS-SECTIONS IN E+ E- ANNIHILATION AND DETERMINATION OF THE STANDARD MODEL PARAMETERS., Physics Letters, B234, 525--, 19900401
  66. SEARCH FOR PAIR PRODUCTION OF HEAVY STABLE PARTICLES AT TRISTAN., Physics Letters, B244, 352-356, 19900401
  67. A SEARCH FOR A FOURTH GENERATION CHARGE -1/3 (B-PRIME) QUARK USING INCLUSIVE MUONS IN E+ E- ANNIHILATIONS AT S**(1/2) = 56.5-GEV TO 60.8-GEV., Physics Letters, B229, 427--, 19890401
  68. A SEARCH FOR EXCITED LEPTONS IN THE ENERGY REGION S**(1/2) = 52-GEV - 60.8-GEV., Physics Letters, B228, 553--, 19890401
  69. MEASUREMENTS OF ALPHA-S IN E+ E- ANNIHILATION AT S**(1/2) = 53.3-GEV AND 59.5-GEV., Physics Letters, B227, 495--, 19890401
  70. SEARCH FOR SUSY PARTICLES IN E+ E- ANNIHILATION AT TRISTAN., Physics Letters, B218, 105--, 19890401
  71. CHARGE ASYMMETRY MEAUREMENT IN E+ E- --- MU+ MU- AND TAU+ TAU- REACTIONS AT S**(1/2) = 52-GEV., Physics Letters, B208, 319--, 19880401
  72. MEASUREMENT OF THE PROCESSES E+ E- --- E+ E- AND E+ E- ----GAMMA GAMMA AT S**(1/2) = 52-GEV., Physics Letters, B200, 391--, 19880401
  73. SEARCH FOR SEQUENTIAL HEAVY LEPTONS IN E+ E- COLLISIONS AT S**(1/2) = 52-GEV., Physical Review, D37, 1339--, 19880401
  74. SEARCH FOR TOP QUARK IN E+ E- COLLISIONS AT S**(1/2) = 52-GEV., Physical Review Letters, 60, 97--, 19880401
  75. AUTOMATED MONITORING AND CALIBRATING SYSTEM OF GAS GAIN AND ELECTRON DRIFT VELOCIT, Nuclear Instruments and Methods in Physics Research, A245, 35--, 19870401
  76. CATHODE READOUT OF LIMITED STREAMER TUBES WITH CONDUCTIVE PLASTIC WALLS., Nuclear Instruments and Methods in Physics Research, A256, 53--, 19870401
  77. THE GAS SAMPLING ELECTROMAGNETIC CALORIMETER USING CONDUCTIVE PLASTIC TUBES, Nuclear Instruments and Methods in Physics Research, A256, 449--, 19870401
  78. zerorh oder design report for the next linear collder, SLAC-R-474, 19960401
  79. gamma gamma collider as an option of JLC, KEK Report, 19970401
  80. JLC Design Study, 19970401
  81. TESLA: THE SUPERCONDUCTING ELECTRON POSITRON LINEAR COLLIDER WITH AN INTEGRATED X-RAY LASER LABORATORY. TECHNICAL DESIGN REPORT. PART 6. APPENDICES. CHAPTER 1. PHOTON COLLIDER AT TESLA., DESY-01-011, 20010401
  82. Particle Physics Experiments at JLC, KEK Report, 20011101
  83. Observation of Stark-Induced Electric Dipole Transition in Atomic Samarium with Optical Double Resonance, J. Phys. Soc. Japan, 71, 2137-2141, 20020401
  84. Stark spectroscopy of high-lying odd parity levels in atomic samarium, European Physical Journal B, 25, 103-111, 20030401
  85. Observation of second harmonics in laser-electron scattering using low energy electron beam, Physics Letter A, 346, 255-260, 20050401
  86. Steering Beam of Charged Particles using Silicon Crystals, Journal of the Physical Society of Japan, 6(76), 064007, 20070601
  87. Measurement of neutrino oscillation by the K2K experiment, Physical Review D, 74, 072003, 20060601
  88. Improved Search for nu-mu -> nu-e Oscillation in a Long-Baseline Acceleralator Experiment, Physical Review Letters, 96, 181801, 20060512
  89. Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen, Physical Review D, 74, 052002, 20060901
  90. Parametric X-ray Study from Textured Molybdenum Polycrystal, Journal of the Physical Society of Japan, 75(12), 124705, 20061212
  91. Beam Handling by Crystals, 3(4), 354-363, 20070131
  92. Analysis of mutual communication between qubits by capacitive coupling, Physical Review A, 67, 050301(R), 20030527
  93. Electron beam deflection with channeling in a silicon crystal at teh REFER electron ring, Nuclear Instruments and Methods in Physics Research Section B, 252, 16-19, 20060901
  94. Evidence for muon neutrino oscillation in an accelerator-based experiment, Physical Review Letters, 94, 082802-081805, 20050303
  95. The K2K SciBar detector, Nuclear Instruments and Methods in Physics Research Section A, 535, 147-151, 20040901
  96. A test of virtual vacuum polarizations in a strong electromagnetic field, Laser Physics, 16(2), 278-283, 20060401
  97. Experimental study of the atmospheric neutrino backgrounds for p ---> e+ pi0 searches in water Cherenkov detectors, Physical Review, D74, 032003-1 032003-13, 20080401
  98. Photon Generation by Laser-Compton Scattering Using an Optical Resonant Cavity at the KEK-ATF Electron Ring, Journal of Physical Society of Japan, 78(7), 074501-1-074501-7, 20090401
  99. Present status and first results of the final focus beam line at the KEK Accelerator Test Facility, Physical Review Speciatl Topics Accelerators and Beams, 13(4), 042801-1 -- 042801-10, 20100401
  100. Photon generation by laser-Compton scattering at the KEK-ATF, Nucl. Inst. & Meth. A, 623(1), 576, 20101101
  101. THE CLIC POSITRON SOURCE BASED ON COMPTON SCHEMES, Proc. Of 23rd Particle Accelerator Conference(PAC09) Vancouver Canada, none(none), WE6RFP065, 20090501
  102. Photon Generation by Laser-Compton Scattering Using an Optical Resonant Cavity at the KEK-ATF Electron Ring, Journal of Physical Society of Japan, 78(7), 074501-1, 20090601
  103. Status of the Energy Recovery Linac project in Japan, Proc. Of 23rd Particle Accelerator Conference(PAC09) Vancouver Canada, WE6RFP065, 20090501
  104. Positron sources using channeling: A promising device for linear colliders, Nuovo Cimento C, 34(4), 141-148, 20110701
  105. Toward the experimental observation of nonlinear effects in laser-electron beam scattering, REVIEW OF SCIENTIFIC INSTRUMENTS, 71(2), 369-375, 200002
  106. Detection of top quarks in a photon-photon collider, INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 15(16), 2599-2604, 20000630
  107. The status of the nonlinear Compton/Thomson scattering experiment, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 455(1), 46-49, 20001121
  108. The multi-configuration Dirac-Fock calculation of the low-lying levels of Sm, EUROPEAN PHYSICAL JOURNAL D, 14(3), 271-277, 200106
  109. gamma gamma collider, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 472(1-2), 4-11, 20011011
  110. Origin of transconductance oscillations in silicon-on-insulator metal-oxide-semiconductor field-effect transistors with an ultrathin 6-nm-thick active Si layer, JOURNAL OF APPLIED PHYSICS, 91(8), 5360-5364, 20020415
  111. Evidence of mesoscopic carrier transport in SOI-MOSFETs with ultra-thin active Si-layer, PHYSICA B-CONDENSED MATTER, 314(1-4), 367-371, 200203
  112. Observation of Stark-induced electric dipole transition in atomic samarium with optical double resonance, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71(9), 2137-2141, 200209
  113. Analysis of mutual communication between qubits by capacitive coupling, PHYSICAL REVIEW A, 67(5), 200305
  114. How well can we reconstruct the t(t)over-bar system near its threshold at future e(+)e(-) linear colliders?, EUROPEAN PHYSICAL JOURNAL C, 29(1), 1-10, 200307
  115. Stark spectroscopy of high-lying odd parity levels in atomic samarium, EUROPEAN PHYSICAL JOURNAL D, 25(2), 103-111, 200308
  116. Search for coherent charged pion production in neutrino-carbon interactions, PHYSICAL REVIEW LETTERS, 95(25), 20051216
  117. The K2K SciBar detector, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 535(1-2), 147-151, 20041211
  118. The photon collider at TESLA, INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 19(30), 5097-5186, 20041210
  119. Evidence for muon neutrino oscillation in an accelerator-based experiment, PHYSICAL REVIEW LETTERS, 94(8), 20050304
  120. Observation of second harmonics in laser-electron scattering using low energy electron beam, PHYSICS LETTERS A, 346(4), 255-260, 20051017
  121. Design, construction, and initial performance of SciBar detector in K2K experiment, IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 52(6), 2992-2997, 200512
  122. Improved search for nu(mu)->nu(e) oscillation in a long-baseline accelerator experiment, PHYSICAL REVIEW LETTERS, 96(18), 20060512
  123. Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen, PHYSICAL REVIEW D, 74(5), 200609
  124. Measurement of neutrino oscillation by the K2K experiment, PHYSICAL REVIEW D, 74(7), 200610
  125. Electron beam deflection with channeling in a silicon crystal at the REFER electron ring, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 252(1), 16-19, 200611
  126. Parametric X-ray study from textured molybdenum polycrystal, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75(12), 200612
  127. A test of virtual vacuum polarizations in a strong electromagnetic field, LASER PHYSICS, 16(2), 278-283, 200602
  128. Steering beam of charged particles using silicon crystals, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 76(6), 200706
  129. Experimental study of the atmospheric neutrino backgrounds for p -> e(+)pi(0) searches in water Cherenkov detectors, PHYSICAL REVIEW D, 77(3), 200802
  130. Measurement of single charged pion production in the charged-current interactions of neutrinos in a 1.3 GeV wide band beam, PHYSICAL REVIEW D, 78(3), 200808
  131. Photon generation by laser-Compton scattering at the KEK-ATF, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 623(1), 576-578, 20101101
  132. Study in a beam test of the resolution of a Micromegas TPC with standard readout pads, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 602(2), 403-414, 20090421
  133. Photon Generation by Laser-Compton Scattering Using an Optical Resonant Cavity at the KEK-ATF Electron Ring, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 78(7), 200907
  134. Feasibility study of the measurement of Higgs pair creation at a photon linear collider, PHYSICAL REVIEW D, 85(11), 20120621
  135. Development of a three dimensional four mirror optical cavity for laser-Compton scattering, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 724, 63-71, 20131001
  136. Blocking positive ion backflow using a GEM gate: experiment and simulations, JOURNAL OF INSTRUMENTATION, 8, 201311
  137. Development of an intense positron source using a crystal-amorphous hybrid target for linear colliders, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 319, 17-23, 20140114
  138. Experimental Validation of a Novel Compact Focusing Scheme for Future Energy-Frontier Linear Lepton Colliders, PHYSICAL REVIEW LETTERS, 112(3), 20140124
  139. Spatial resolutions of GEM TPC. A novel theoretical formula and its comparison to latest beam test data, JOURNAL OF INSTRUMENTATION, 9, 201403
  140. Demonstration of the stabilization technique for nonplanar optical resonant cavities utilizing polarization, REVIEW OF SCIENTIFIC INSTRUMENTS, 86(4), 201504
  141. A study of the measurement precision of the Higgs boson decaying into tau pairs at the ILC, EUROPEAN PHYSICAL JOURNAL C, 75(12), 20151228
  142. Positron capture simulation for the ILC electron-driven positron source, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 201510
  143. Feedback-free optical cavity with self-resonating mechanism, APL photonics, 1, 026103-1-026103-7, 201604
  144. Feedback-free optical cavity with self-resonating mechanism, APL PHOTONICS, 1(2), 201605
  145. High flux circularly polarized gamma beam factory: coupling a Fabry-Perot optical cavity with an electron storage ring, SCIENTIFIC REPORTS, 6, 201611
  146. A time projection chamber with GEM-based readout, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 856, 109-118, 201706
  147. Development of optical resonant cavities for laser-Compton scattering, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 402, 370-372, 20170701
  148. A novel technique for the measurement of the avalanche fluctuation of gaseous detectors, Nuclear Instruments and Methods in Physics Research Section A, 845, 236-240, 201702
  149. ★, Future Prospects of Gamma–Gamma Collider, Reviews of Accelerator Science and Technology, 10(1), 215-226, 201908
  150. Light-by-light scattering in a photon photon collider, EUROPEAN PHYSICAL JOURNAL C, 78, 201811
  151. Measurement of the electron transmission rate of the gating foil for the TPC of the ILC experiment, Nuclear Instruments and Methods in Physics Research, A918, 41-53, 201902
  152. Creation of Electron-Positron Pairs in Photon-Photon Collisions Driven by 10-PW Laser Pulses, PHYSICAL REVIEW LETTERS, 122(1), 20190109
  153. Measurement of the electron transmission rate of the gating foil for the TPC of the ILC experiment, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 918, 41-53, 20190221
  154. Light-by-light scattering in a photon-photon collider, EUROPEAN PHYSICAL JOURNAL C, 78(11), 20181103
  155. A design of an electron driven positron source for the internationallinear collider, Nuclear Instruments and Methods in Physics Research, A953, 163134-1-163134-9, 20200211
  156. Mode-locked pulse oscillation of a self-resonating enhancement optical cavity, Journal of Physics: Conference Series, 1350(1), 1-6, 201912
  157. ★, Precision electroweak measurements on the Z resonance, PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 427(5-6), 257-454, 2006

Publications such as books

  1. 2005/12, LINEAR COLLIDER PHYSICS IN THE NEW MILLENNIUM , World Scientific, 2005, 12, Scholarly Book, Cocompilation
  2. 2011/02, Proceedings of International Conference on Physics in Intense Fields PIF 2010, 研究ノート, 2011, 02, Report, Compilation, 178

Invited Lecture, Oral Presentation, Poster Presentation

  1. Physics and Technology of Photon Collider, Tohru Takahashi, International Workshop on Physics and its Applications, 2022/07/18, With Invitation, English, United Scientific Group, San Fransicsco Online, Since its proposal in the 1980s, the photon collider has been studied as a new type of facility in particle physics. The basic idea is to generate a high-energy photon beam by inverse Compton scattering of laser photons onto a high-energy electron beam. This has been studied as an option for high-energy electron and positron linear colliders, such as the International Linear Collider (ILC), for example. In high-energy interactions, photon-photon collisions provide an opportunity to study the Higgs boson in a complementary way to electron-positron interactions. However, despite vigorous research in both physics and technology, photon colliders have not been realized to date. Recently, we have started to study the possibility of constructing a MeV-class photon collider for the purpose of observing light by light scattering. We have shown that it is possible to observe the signal within one year against the background. In this talk, we will briefly introduce the photon collider; principle, technology, and physics. Then, we will discuss the idea of constructing a photo collider in the MeV region and the feasibility of observing by light scattering with a realistic collider design. In addition, application of inverse Compton scattering as a new light source will be discussed.
  2. E-driven positron source R&D by Industry-Government-Academia collaboration, Tohru Takahashi, ILCX2021, 2021/10/28, Without Invitation, English
  3. Summary of Industry Session, Tohru Takahashi, LCWS2019, 2019/11/01, Without Invitation, English
  4. Concluding remarks, Tohru Takahashi, CORE-U Workshop , Intense fileld and extream universe, 2016/03, Without Invitation, English, CORE-U, Higashi Hiroshima, Surrmay of the conference
  5. Energy deposition around the conventional source target- an update -, T.Takahashi, PosiPol2016, 2016/.9, Without Invitation, English, LAL, Orsay France
  6. Development of Optical Resonant Cavities for laser-Compton Scattering, T.Takahashi, Channeling2016, 2016/.9, Without Invitation, English
  7. Energy deposition around ana electronn driven target- an update -, T.Takahashi, LCWS2016, 2016/12, Without Invitation, English
  8. Energy depositions for an electron driven target w/ 1300 bunches, T.Takahashi, Staging mini workshop, 2017/.4, Without Invitation, English
  9. Interaction Region of gamma gamma collider, T.Takahashi, ICFA Mini-Workshop on Future gamma-gamma Collider, 2017/.4, With Invitation, English
  10. An Update of Energy Deposition around e-driven positron source, T.Takahshi, LCWS2017, 2017/10, Without Invitation, English
  11. Energy depositions for an electron driven target w/ 1300 bunches, T.Takahashi, America Workshshop for Linear Collider, 2017/.5, Without Invitation, English
  12. ILC status in Japan, Tohru Takahashi, POSIPOL2018, 2018/09/03, Without Invitation, English, CERN, Geneva,
  13. Energy Deposition around the e-driven target, Tohru Takahashi, POSIPOL2018, 2018/09/04, Without Invitation, English, CERN, Geneva
  14. Energy Deposition around the e-driven target, Tohru Takahashi, LCWS2018, 2018/10/23, Without Invitation, English, University of Texas, Arlingtong, TX
  15. The ILC Accelerator and Project Status, Tohru Takahashi, JAPAN-SPAIN WORKSHOP ON OPPORTUNITIES ON ACCELERATORS, 2018/12/10, With Invitation, English, ICEX, AAA, INESTAR, Madrid, Spain
  16. gamma gamma -> gamma gamma Simulation, Tohru Takahashi, IHEP Seminar, 2018/07/05, With Invitation, English, IHEP, Beijing, Chaina

External Funds

Acceptance Results of Competitive Funds

  1. KAKENHI, 2014, 2016
  2. KAKENHI, Development of a positron source using crystal-amorphous hybrid targets, 2010, 2012
  3. KAKENHI, 2010, 2014
  4. KAKENHI, Development of a three dimensional four mirror optical cavity for laser-Compton scattering, 2009, 2012
  5. KAKENHI, 2006, 2007
  6. KAKENHI, Efficient generation of polarized gamma-rays by using a pulse laser beam stacking cavity and an electron storage ring, 2006, 2008
  7. KAKENHI, Research for Hybrid System comprised Laser Super Cavity and Off-Axis Parabolic Reflective mirrors toward International Linear Collider, 2005, 2009
  8. KAKENHI, 2004, 2005
  9. KAKENHI, 2003, 2004
  10. KAKENHI, 2000, 2001
  11. 2014, 2018

Social Activities

Organizing Academic Conferences, etc.

  1. PosiPol2016, International Program Comittee, 2015/09, 2016/09
  2. ALCW2018, International Organizing Committee, 2018/01, 2018/06