Laser Spectroscopy of Muonic Hydrogen
A new measurement of the proton Zemach radius via spectroscopy of the ground-state hyperfine splitting in muonic hydrogen.
About
Here is a website with information of Sohtaro Kanda's research and development activities.
Curriculum Vitae
Personal Details and Contact Information
- Name: Sohato Kanda (¿ÀÅÄ ÁïÂÀϺ)
- Date of Birth: August 27, 1987
- Affiliation: RIKEN (Íý²½³Ø¸¦µæ½ê) Nishina Center for Accelerator-Based Science Advanced Meson Laboratory
- Address: Hirosawa 2-1, Wako, Saitama, Japan Main Research Building, Room 307
- Position: Postdoctoral Researcher
- Contact: sohtaro.kanda at riken.jp
Education
- Doctor of Philisophy at The University of Tokyo, Feb. 28, 2017 Concentrations: Physics, Particle/Nuclear/Atomic Physics Dissertation: "Direct measurement of muonium ground state hyperfine splitting with high-intensity pulsed muon beam"
- Master of Science at The University of Tokyo, Mar. 31, 2013 Concentrations: Physics, Particle Physics, High Energy Physics Dissertation: "Development of a high rate positron tracker and study of muonium production target for muon g-2/EDM experiment at J-PARC"
Work Experience
- Mar. 2017 - today : Postdoctoral Researcher / RIKEN
- Apr. 2016 - Mar. 2017 : Research Assistant / The Univ. of Tokyo
- Apr. 2014 - Mar. 2016 : Research Fellowship for Young Scientists / JSPS
- Apr. 2013 - Mar. 2014 : Junior Research Associate / RIKEN
- Apr. 2011 - Mar. 2013 : Research Assistant / KEK
Awards
- Young Scientist Award of the Physical Society of Japan ÆüËÜʪÍý³Ø²ñ¼ã¼ê¾©Îå¾Þ (2017)
- Award of the Japan Association of High Energy Physicists ¹â¥¨¥Í¥ë¥®¡¼ÊªÍý³Ø¾©Îå¾Þ (2017)
- Student Award of the Society of Muon and Meson Science of Japan ÆüËÜÃæ´Ö»Ò²Ê³Ø²ñ ³ØÀ¸¾©Îå¾Þ (2017)
- Best Poster Award at HINT2016 (2016)
- Best Student Poster Award at 3rd Quantum Beam Science Festa (2015)
- Best Student Poster Award at 2nd IMSS Science Festa (2014)
- Best Poster Award at KEK Student Day (2014)
- Best Student Poster Award at 1st IMSS Science Festa (2013)
- Best presentation Award at Spring School of High Energy Physics (2012)
Research
Precision Physics of Fundamental Symmetries
Microwave Spectroscopy of Muonium
The most stringent test of the bound-state QED theory and a precision measurement of the muon-to-electron mass ratio.
Muon g-2/EDM
Precision measurement of the muon anomalous magnetic moment and a search for the muon electric dipole moment.
PHENIX
Relativistic proton-proton collision for factorization of the proton spin.
Development
Instrumentation for Physics Research
Mid-Infrared Laser
Intense, pulsed, narrow-width light source for a muonic hydrogen spectroscopy.
High-Rate Capable Particle Detector
Segmentned scintillation counter for an experiment with high-intensity pulsed muon beam. S. Kanda, PoS(PhotoDet2015)036 (2016)
Extremely Thin Beam Profile Monitor
Beam profile monitor with minimum beam destruction. S. Kanda, RIKEN APR Vol. 48 (2016)
Three-Dimensional Beam Imager
Beam profile monitor for an experiment with low-density gas target. S. Kanda et al., KEK-MSL Prog. Rep. 2014 (2015)
Muonium Emitter
Structured silica aerogel for the muon beam cooling via laser ionization of thermal muonium in vacuum. G. Beer et al., Prog. Theor. Exp. Phys. 091C01 (2014) S. Kanda, Nuclear Physics B Proc. Suppl. (2014)
Readout Electronics
ASIC and FPGA for analog/digital signal processes from silicon photomultupliers. K. M. Kojima et al., J. Phys. Conf. Ser. 551 (2014)
Publication
| Author(s) | Journal | Title |
|---|---|---|
| S. Kanda et al. | Measurement of the proton Zemach radius from the hyperfine splitting in muonic hydrogen atom | J. Phys.: Conf. Ser. 1138 (2018) 012009. |
| S. Kanda et al. | Development of an intense mid-infrared coherent light source for muonic hydrogen spectroscopy | RIKEN Accelerator Progress Report 51 (2018) 214. |
| S. Kanda et al. | Precision laser spectroscopy of the ground state hyperfine splitting in muonic hydrogen | Proceedings of Science, PoS(NuFACT2017)122 (2018) 1-6. |
| A. Adare et al. (PHENIX Collaboration) | Pseudorapidity Dependence of Particle Production and Elliptic Flow in Asymmetric Nuclear Collisions of p+Al, p+Au, d+Au, and He+Au at ¢åsNN=200 GeV | Phys. Rev. Lett., 121 222301 (2018). |
| C. Aidala et al. (PHENIX Collaboration) | Production of ¦Ð0 and ¦Ç mesons in Cu+Au collisions at ¢åsNN=200 GeV | Phys. Rev. C 98 054903 (2018). |
| S. Kanda for the MuSEUM Collaboration | Direct measurement of muonium hyperfine splitting at J-PARC | Proceedings of Science, PoS(INPC2016)170 (2017) 1-6. |
| C. Aidala et al. (PHENIX Collaboration) | Cross section and transverse single-spin asymmetry of muons from open heavy-flavor decays in polarized p + p collisions at ¢ås = 200 GeV | Phys. Rev. D 95, 112001 (2017) 1-15. |
| S. Kanda | Development of magnetic shield for the MuSEUM experiment | RIKEN Accelerator Progress Report 49 (2017) 227. |
| S. Kanda | Development of a new positron counting system with SiPM readout for muon spin spectrometers | Proceedings of Science, PoS(PhotoDet2015)036 (2016) 1-6. |
| S. Kanda | Development of online muon beam profile monitor for the MuSEUM experiment | RIKEN Accelerator Progress Report Vol. 48 (2016) 278. |
| A. Adare et al. (PHENIX Collaboration) | Measurements of double- helicity asymmetries in inclusive J/¦× production in longitudinally polarized p + p collisions at ¢ås = 510 GeV | Phys. Rev. D 94, 112008 (2016) 1-10. |
| S. Kanda et al. | Development of 3D imaging of muon stopping distribution for muonium HFS measurement | KEK-MSL Progress Report 2014 (2015) 46-47. |
| S. Kanda et al. | Precision measurement of muonium hyperfine splitting at J-PARC and integrated detector system for high-intensity pulsed muon beam experiment | JPS Conf. Proc. 8, 025006 (2015) 1-6. |
| S. Kanda for the MuSEUM collaboration | Precision measurement of muonium hyperfine splitting at J-PARC | RIKEN Accelerator Progress Report Vol. 47 (2015) 264. |
| K. M. Kojima et al. | New ¦ÌSR spectrometer at J-PARC MUSE based on Kalliope detectors | J. Phys. Conf. Ser. 551 (2014) 012063. |
| S. Kanda et al. | Development of High-Rate Positron Tracker for the Muonium Production Experiment at J-PARC | JPS Conf. Proc. 2, 010404 (2014) 1-7. |
| G. Beer et al. | Enhancement of muonium emission rate from silica aerogel with a laser-ablated surface | Prog. Theor. Exp. Phys. 091C01 (2014) 1-7. |
| A. Adare et al. (PHENIX Collaboration) | Nuclear matter effects on J/¦× production in asymmetric Cu+Au collisions at ¢åsNN = 200 GeV | Phys. Rev. C, 90, 064908 (2014) 1-6. |
| S. Kanda for the muon g/EDM Collaboration | Muonium production target for the muon g-2/EDM experiment at J-PARC | Nuclear Physics B Proceedings Supplements (2014). |
| S. Kanda | Development of highly segmented positron counter under high magnetic field for the muonium HFS measurement | KEK-MSL Progress Report 2013 (2014). |
| P. Bakule et al. | Measurement of muonium emission from silica aerogel | Prog. Theor. Exp. Phys. 103C01 (2013) 1-10. |
Presentation
| Date | Venue | Title |
|---|---|---|
| Feb. 2019 | International workshop on the structure of the proton, Yamagata | Development of instruments for the proton radius measurement at RIKEN |
| Sep. 2018 | Symposium for Muon and Neutrino Physics, Osaka | Laser spectroscopy of the ground-state hyperfine splitting in muonic hydrogen atom |
| Aug. 2018 | NuFact2018, Virginia | Precision spectroscopy of exotic atoms involving muon |
| Jul. 2018 | Nucleon Spin Structure at Low Q: A Hyperfine View, Trento | Laser spectroscopy of the hyperfine splitting in muonic hydrogen atom by a measurement of decay electron asymmetry |
| May. 2018 | PSAS2018, Vienna | Measurement of the proton Zemach radius from the hyperfine splitting in muonic hydrogen atom |
| Apr. 2018 | Workshop on Lepton Flavor Physics with Most Intense DC Muon Beams, Tokyo | Precision Spectroscopy of Muonic Systems with High-intensity Pulsed Muon Beam |
| Mar. 2018 | JPS Annual Meeting, Chiba | Precision laser spectroscopy of muonic hydrogen atom |
| Mar. 2018 | JPS Annual Meeting, Chiba | Direct Measurement of Muonium Ground State Hyperfine Splitting with High-intensity Pulsed Muon Beam |
| Oct. 2017 | NuFact2017, Uppsala | Precision Laser Spectroscopy of the Ground State Hyperfine Splitting in Muonic Hydrogen |
| Jul. 2017 | FPUNA, Osaka | Precision laser spectroscopy of the muonic hydrogen HFS for determination of the proton Zemach radius |
| Dec. 2016 | HINT2016, Tokai | Direct observation of muonium ground state hyperfine structure at J-PARC |
| Oct. 2016 | INPC2016, Adelaide | Direct measurement of muonium hyperfine splitting at J-PARC |
| Aug. 2016 | HiSEBSM, Quy Nhon | Precision Microwave Spectroscopy of Muonium Hyperfine Splitting at J-PARC |
| Feb. 2016 | LEAP2016, Kanazawa | Development of a fiber beam profile monitor for the experiments with low- energy charged particle beam |
| Oct. 2015 | HINT2015, Tokai | Direct measurement of muonium ground state hyperfine splitting at zero magnetic field |
| Jul. 2015 | PhotoDet2015, Moscow | Development of a new positron counting system with SiPM readout for muon spin spectrometers |
| Oct. 2014 | HAWAII2014, Hawaii | Precision measurement of muonium hyperfine splitting at J-PARC |
| Sep. 2014 | J-PARC2014, Tsukuba | Precision measurement of muonium hyperfine splitting at J-PARC - Integrated detector system of high- intensity pulsed muon beam experiment |
| Jul. 2014 | EGAS45, Lille | Precision Measurement of Muonium Hyperfine Splitting at J-PARC |
| Sep. 2013 | PSI2013, Villigen | Precision measurement of muonium hyperfine splitting at J-PARC |
| Aug. 2013 | USM2013, Matsue | Development of High-Rate Positron Tracker for the Muonium Production Experiment at J-PARC |
| Feb. 2013 | PCPV2013, Maharashtra | Muonium production target for the muon g-2/EDM experiment at J-PARC |