presentations

presentations by the MuSEUM collaboration and collaborators.

This page lists conference, workshop, and seminar presentations directly related to the MuSEUM experiment, including muonium HFS, muonic-helium HFS, and instrumentation developed for these measurements.

2026

Title Presenter Conference / workshop Links
Precise Spectroscopy of Muonium Hyperfine Structure in High Magnetic Field Shoichiro Nishimura International Conference on Precision Physics of Simple Atomic Systems (PSAS2026) Conference
Measurements of Muonic Helium Hyperfine Structure in High Magnetic Field at J-PARC MUSE Patrick Strasser International Conference on Precision Physics of Simple Atomic Systems (PSAS2026) Conference

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2025

Title Presenter Conference / workshop Links
The MuSEUM experiment at J-PARC Patrick Strasser ALPHA 2025 (MITP Topical Workshop, Precision Determinations of the Fine-Structure Constant) Conference
Muonium Precision Experiments at J-PARC Patrick Strasser PSI 2025 (Physics of Fundamental Symmetries and Interactions) Conference
Toward high-precision spectroscopy of muonium hyperfine structure at J-PARC with high magnetic field Yu Goto The 9th International Symposium on Symmetries in Subatomic Physics (SSP2025) Conference
Muonic Helium HFS Measurements at J-PARC Patrick Strasser The 9th International Symposium on Symmetries in Subatomic Physics (SSP2025) Conference
Current Status and Prospects for Long-Term Precision Measurements of Muonium Hyperfine Structure in High Magnetic Field Kengo Fukui The 9th International Symposium on Symmetries in Subatomic Physics (SSP2025), poster Conference
J-PARC muon g-2/EDM experiment: Test Operation of a Positron Tracking Detector and Consideration of Its Application to the MuSEUM Experiment Taiki Sato The 9th International Symposium on Symmetries in Subatomic Physics (SSP2025), poster Conference
Current Status of Precise Measurement of Muonium Hyperfine Structure in High Magnetic Field at J-PARC MUSE Koichiro Shimomura 16th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2025), poster Conference
Current status of precise measurement of muonium hyperfine structure in high magnetic field at J-PARC MUSE Takayuki Yamazaki CIPANP 2025 (Conference on the Intersections of Particle and Nuclear Physics) Conference
Current status of precise measurement of muonium hyperfine structure in high magnetic field at J-PARC MUSE Yu Goto 10th International Conference on Precision Physics and Fundamental Physical Constants (FFK2025) Conference
ミュオニウム超微細構造精密測定にむけた現状 Yu Goto 日本物理学会 2025年春季大会

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2024

Title Presenter Conference / workshop Links
Precision Measurements of Muonium and Muonic Helium Hyperfine Structure at J-PARC Patrick Strasser International Conference on Precision Physics of Simple Atomic Systems (PSAS'2024) Conference
Muonic Helium Hyperfine Structure Measurements at J-PARC MUSE Patrick Strasser International Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons (EXA/LEAP2024) Conference
Challenges in Improving Measurements of the Hyperfine Structure of Muonic Helium Atoms Patrick Strasser KAMPAI Workshop, ECT* Conference
Towards Improving the Precision of the Negative Muon Mass via Muonic Helium HFS Spectroscopy Patrick Strasser International Workshop on Precision Measurements of Muonic Atoms
New Muonic Helium HFS Measurements at J-PARC MUSE and Research to Improve Precision Yu Goto The 4th J-PARC Symposium (J-PARC2024), poster Conference
Towards the Precision Measurement of the Hyperfine Splitting in Muonium at J-PARC with a High Intensity Muon Beam and a Magnetic Field Mahiro Fushihara The 4th J-PARC Symposium (J-PARC2024) Conference
Rabi-oscillation spectroscopy: high precision time-domain analysis applied to muonium hyperfine resonance Hiroyuki A. Torii EXA/LEAP2024 Conference
磁場でのミュオニウム超微細構造精密測定に向けたミュオンビーム分布の評価 Mahiro Fushihara 日本物理学会 2024年大会
J-PARCミュオン実験用高精度磁場測定装置の開発 Ken-ichi Sasaki 日本物理学会 第79回年次大会
ラビ振動分光によるミュオニックヘリウム原子超微細構造の測定 Takashi Yamanaka 日本物理学会 2024年春季大会

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2023

Title Presenter Conference / workshop Links
Precision Measurement of Muonium Hyperfine Structure at J-PARC Shoichiro Nishimura International Conference on Precision Physics and Fundamental Physical Constants (FFK2023) Conference
Rabi-Oscillation Spectroscopy of the Hyperfine Structure of the Muonium Atom for Fundamental Physics Hiroyuki A. Torii 6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan Conference
Precision muonium spectroscopy Ryoto Iwai Muon4Future Workshop Conference / Proceedings
The measurements of muon g-2, EDM, and muonium at J-PARC Koichiro Shimomura 6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan Conference
Precise measurements using muonium: from spectroscopy to interferometry Sohtaro Kanda Muons in Minneapolis Conference
Rabi-oscillation spectroscopy of the hyperfine structure of the muonium atom for high-precision determination of the muon mass Hiroyuki A. Torii HYPERFINE2023
将来におけるミューオニウム超微細構造精密測定へ向けた箱型マイクロ波キャビティの開発 Ryoto Iwai 日本物理学会 2023年春季大会
J-PARCにおけるミューオニウム超微細構造の精密測定に向けたミューオンビームおよび実験装置の最適化 Mahiro Fushihara 量子ビームサイエンスフェスタ2023
高磁場環境でのミュオニウム超微細構造精密測定に向けた精密磁場調整システムの試験 Hiroki Tada 日本物理学会 2023年春季大会
Towards Improving the Precision of the Negative Muon Mass via Muonic Helium HFS Spectroscopy Patrick Strasser Searching for New Physics at the Quantum Technology Frontier, poster Conference
Muonium and Muonic Helium Hyperfine Structure Precision Measurements at J-PARC MUSE Patrick Strasser The 24th International Workshop on Neutrinos From Accelerators (NuFACT2023) Conference / Slides
Status of the MuSEUM experiment Patrick Strasser Sixth Plenary Workshop of the Muon g-2 Theory Initiative Conference
Present status of spectroscopy of the hyperfine structure and repolarization of muonic helium atoms at J-PARC Seiso Fukumura International Conference on Precision Physics and Fundamental Physical Constants (FFK2023) Conference

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2022

Title Presenter Conference / workshop Links
Precise measurement of the hyperfine splitting in muonium with a high intensity pulsed muon beam at J-PARC Ryoto Iwai 15th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2022) Conference
MuSEUM: Precise measurement of the hyperfine splitting in muonium at J-PARC Ryoto Iwai 14th International Workshop on Fundamental Physics Using Atoms (FPUA2022) Conference
Rabi-oscillation spectroscopy of muonium and muonic atoms Hiroyuki A. Torii QSNP2022 Conference
ラビ振動分光で探るミュオニウム原子とミュオニック原子 Hiroyuki A. Torii 原子衝突学会 第47回年会
Zero-Field and High-Field Precision Measurements of Muonium Hyperfine Structure at J-PARC Shoichiro Nishimura PSI2022 Conference
New precise spectroscopy of the hyperfine structure in muonium with a high-intensity pulsed muon beam Sohtaro Kanda PSAS2022 Conference
J-PARCにおける高磁場環境でのミュオニウム超微細構造精密測定の準備状況 Hiroki Tada 日本物理学会 2022年秋季大会
ミュオニウム超微細構造精密測定のためのブラインド解析法の開発 Shoichiro Nishimura 日本物理学会 第77回年次大会
New Measurements of Muonic Helium Atom Hyperfine Structure at J-PARC MUSE Patrick Strasser Physics of Fundamental Symmetries and Interactions (PSI2022) Conference
New Muonic Helium HFS Measurements at J-PARC Patrick Strasser 14th International Workshop on Fundamental Physics Using Atoms (FPUA2022) Conference
Muonic Helium HFS Measurements Patrick Strasser 中性子・ミュオンKEK S型課題合同研究会
Status of the new muonic helium atom HFS measurements at J-PARC MUSE Patrick Strasser 15th International Conference on Muon Spin Rotation, Relaxation, and Resonance (μSR2022) Conference
Muonic helium atom hyperfine splitting measurement at J-PARC Patrick Strasser Satellite Workshop “Proton structure in and out of muonic hydrogen – the ground-state hyperfine splitting” Conference
J-PARCにおけるミューオニックヘリウム超微細構造精密測定及びミューオニックヘリウム偏極用SEOP装置の開発状況 Seiso Fukumura 日本物理学会 2022年秋季大会
J-PARCにおけるミューオニックヘリウム超微細構造精密測定及びミューオニックヘリウム偏極用SEOP装置の開発状況 Seiso Fukumura RCNP研究会「中性子と原子で探る基礎物理」

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2021

Title Presenter Conference / workshop Links
Zero-Field and High-Field Measurements of Muonium Hyperfine Structure with Rabi-Oscillation Spectroscopy Shoichiro Nishimura International Conference on Exotic Atoms and Related Topics (EXA2021) Conference
Precision measurement of muonium hyperfine structure at J-PARC Hiroki Tada Particles and Nuclei International Conference (PANIC2021) Conference
Towards New Precise Measurements of Muonic Helium Atom HFS at J-PARC MUSE Patrick Strasser Workshop on Fundamental Physics Using Atoms 2021 (FPUA2021) Conference
Measurement and development of muonic helium hyperfine structure at J-PARC Seiso Fukumura International Conference on Exotic Atoms and Related Topics (EXA2021) Conference
J-PARCにおけるミューオニックヘリウム超微細構造精密測定 Seiso Fukumura 日本物理学会 第76回年次大会
ミューオニックヘリウム偏極用SEOP装置の開発 Seiso Fukumura 日本物理学会 2021年秋季大会
Muonic Helium HFS Measurement Patrick Strasser 中性子・ミュオンKEK S型課題合同研究会
高磁場下におけるMuSEUM実験に用いる磁場空間分布測定器の開発 Kotaro Shimizu 日本物理学会 第76回年次大会

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2020

Title Presenter Conference / workshop Links
Precise spectroscopy of muonium hyperfine structure at J-PARC Shun Seo International Conference on High Energy Physics (ICHEP2020) Conference
Precise spectroscopy of muonium hyperfine structure using Kr-He mixture gas Shun Seo 12th International Workshop on Fundamental Physics Using Atoms (FPUA2020) Conference
クリプトンヘリウム混合気体中におけるミュオニウム超微細構造の精密分光 Shun Seo 日本物理学会 2020年秋季大会
高磁場におけるミュオニウム超微細構造測定のための磁場測定器開発 Toya Tanaka 日本物理学会 2020年秋季大会
高磁場でのミュオニウム超微細構造精密測定のためのマイクロ波キャビティの準備 Hideharu Yamauchi 日本物理学会 2020年秋季大会
高磁場におけるミュオニウム超微細構造測定のための時間微分法開発 Hiroki Tada 日本物理学会 2020年秋季大会
Discussions on a shimming strategy to obtain very homogeneous magnetic fields using shimming calculation based on TSVD Mitsushi Abe 10th ACASC / 2nd Asian-ICMC / CSSJ Joint Conference Conference
Study on Shimming System of Superconducting Magnets for J-PARC g-2/EDM and MuSEUM experiments Ken-ichi Sasaki 10th ACASC / 2nd Asian-ICMC / CSSJ Joint Conference Conference

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2019

Title Presenter Conference / workshop Links
Present status of muonium hyperfine splitting in J-PARC Koichiro Shimomura International Conference on Precision Physics and Fundamental Physical Constants (FFK2019) Conference
MuSEUM Koichiro Shimomura Third Plenary Workshop of the Muon g-2 Theory Initiative (INT-19-74W) Conference
J-PARCミュオニウム超微細構造測定の実験状況 Shoichiro Nishimura 日本物理学会 2019年秋季大会
Muonium Hyperfine Structure Measurement in a Zero/High Magnetic Field at J-PARC Shoichiro Nishimura The 3rd J-PARC Symposium (J-PARC2019) Conference
Muon Spin Resonance Experiment in the High Magnetic Field at J-PARC Shoichiro Nishimura Materials Research Meeting 2019 (MRM2019)
Spectroscopy of Muonium Hyperfine Structure at J-PARC Yasuhiro Ueno 21st International Workshop on Neutrinos from Accelerators (NuFACT2019) Conference
クリプトンヘリウム混合気体中におけるミュオニウム超微細構造の精密分光 Shun Seo 日本物理学会 2019年秋季大会
Precise measurement of muonium hyperfine structure using Kr-He mixture gas Shun Seo The 3rd J-PARC Symposium (J-PARC2019) Conference
Precise spectroscopy of muonium hyperfine structure using Kr-He mixture gas Shun Seo Physics of Fundamental Symmetries and Interactions (PSI2019) Conference
High precision measurement of muonium hyperfine structure Toya Tanaka 3rd International Conference on Charged Lepton Flavor Violation (CLFV2019) Conference
Spectroscopy of muonium hyperfine structure Toya Tanaka Workshop “New Developments of Muon Physics” Conference
高磁場におけるミュオニウム超微細構造測定に向けた磁場測定器開発 Toya Tanaka 日本物理学会 2019年秋季大会
Development of magnetic field measurement system for muonium hyperfine structure spectroscopy with high magnetic field Toya Tanaka The 3rd J-PARC Symposium (J-PARC2019) Conference
J-PARCでの高磁場ミュオニウム超微細構造の精密分光に向けた前置検出器の開発 Seiso Fukumura 日本物理学会 2019年秋季大会
Development of forward detector for measurement of muonium hyperfine structure in high magnetic field at J-PARC Seiso Fukumura The 3rd J-PARC Symposium (J-PARC2019) Conference
従来精度を打ち破るミューオニウム超微細構造のマイクロ波分光 Hiroyuki A. Torii 日本物理学会 第74回年次大会
Muonium Hyperfine Structure Measurement at J-PARC Shoichiro Nishimura FPUA2019 Conference
時間微分法で迫るMu HFS精密測定 Shoichiro Nishimura ミュオン科学と加速器研究

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2018

Title Presenter Conference / workshop Links
Auxiliary measurements, esp. mumu/mup in Muonium; MuSEUM experiment Koichiro Shimomura 15th International Workshop on Tau Lepton Physics Conference
Measurement of hyperfine splitting of muonium at J-PARC Koichiro Shimomura 5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan Conference
Muonium HFS measurement; Past, Present, Future Koichiro Shimomura Physics of muonium and related topics
スピン共鳴信号の時間微分解析によるミューオニウム原子高精度分光 Hiroyuki A. Torii 日本物理学会 2018年秋季大会
New precise measurements of muonium hyperfine structure at J-PARC MUSE Patrick Strasser Quantum Technology International Conference (QTech2018) Conference
Precision spectroscopy of exotic atoms involving muon Sohtaro Kanda 20th International Workshop on Neutrinos (NuFact2018) Conference
Precision Spectroscopy of Muonic Systems with High-intensity Pulsed Muon Beam Sohtaro Kanda Global Developments of Researches in Lepton Flavor Physics with Muons
New Precision Measurement of Muonium Hyperfine Structure Yasuhiro Ueno International Conference on High Energy Physics (ICHEP2018) Conference
Precise spectroscopy of muonium hyperfine structure at J-PARC Shun Seo 7th Symposium on Symmetries in Subatomic Physics (SSP2018) Conference
高磁場におけるミュオニウム超微細構造精密測定 Shun Seo 日本物理学会 2018年秋季大会
Precision measurement of muonium hyperfine structure at J-PARC Shoichiro Nishimura NITHEP2018
ミュオニウム超微細構造精密測定実験の進展 Shoichiro Nishimura 日本物理学会 2018年大会
ミュオニウム原子超微細構造のマイクロ波分光実験における進展 Hiroyuki A. Torii 日本物理学会 第73回年次大会
MuSEUM実験:時間微分ミューオンスピン共鳴法によるミュオニウム超微細構造の測定 Shoichiro Nishimura 日本物理学会 第73回年次大会
クリプトン気体中におけるミュオニウム超微細構造の精密分光 Yasuhiro Ueno 日本物理学会 第73回年次大会

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2017

Title Presenter Conference / workshop Links
Precise Measurement of Muonium Hyperfine Structure Koichiro Shimomura International Workshop on Fundamental Physics using Neutrons and Atoms
Possibility of New Precise Measurements of Muonic Helium Atom HFS at J-PARC MUSE Patrick Strasser 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2017) Proceedings
1.7 T磁場下でのミュオニウム超微細構造精密測定に向けた磁場プローブ開発 Shun Seo 日本物理学会 2017年秋季大会
1.7 Tにおけるミュオニウム超微細構造測定に向けた精密磁場マッピング手法の開発 Toya Tanaka 日本物理学会 2017年秋季大会
J-PARCにおけるミューオニウム超微細構造精密測定実験のための中性子検出器開発 Daisuke Yagi 日本物理学会 2017年秋季大会
MuSEUM実験:シリコン検出器を用いたミューオニウム超微細構造の精密測定 Shoichiro Nishimura 日本物理学会 2017年秋季大会
高強度パルスミューオンビームを用いたミュオニウム超微細構造の極小磁場下における精密測定 Yasuhiro Ueno 日本物理学会 2017年秋季大会
ミューオニウム超微細構造精密測定実験のための中性子検出器の開発 Daisuke Yagi 日本物理学会 第72回年次大会
J-PARC MUSEにおけるミュオニウム超微細構造の精密測定の現状と展望 Yasuhiro Ueno 日本物理学会 第72回年次大会
Direct measurement of muonium ground-state hyperfine structure with a high-intensity pulsed muon beam at J-PARC Sohtaro Kanda 日本物理学会 第72回年次大会

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2016

Title Presenter Conference / workshop Links
Precise Measurement of Muonium HFS at J-PARC MUSE Yasuhiro Ueno 22nd International Spin Symposium Conference
Present status of Mu HFS Measurement in J-PARC Koichiro Shimomura 7th Meeting on CPT and Lorentz Symmetry
Direct measurement of muonium hyperfine splitting at J-PARC Sohtaro Kanda International Nuclear Physics Conference (INPC2016)
Precision microwave spectroscopy of muonium hyperfine structure at J-PARC Sohtaro Kanda 日本物理学会 2016年秋季大会
Precision Microwave Spectroscopy of Muonium Hyperfine Splitting at J-PARC Sohtaro Kanda HiSEBSM 2016 Conference
Detector development for the direct measurement of muonium hyperfine structure at J-PARC Sohtaro Kanda 日本物理学会 第71回年次大会
Direct observation of muonium ground state hyperfine structure at J-PARC Sohtaro Kanda HINT2016 Conference
J-PARC MUSEにおけるミュオニウム超微細構造精密測定実験の開発状況 Koichiro Shimomura 日本物理学会 2016年秋季大会
ミューオニウム超微細構造精密測定実験のための中性子検出器の開発 Daisuke Yagi 日本物理学会 2016年秋季大会

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2015

Title Presenter Conference / workshop Links
Muonium Hyperfine Structure Measurement at J-PARC Koichiro Shimomura IUCSS Workshop on Signals for Nonminimal Lorentz and CPT Violation
Direct measurement of muonium ground state hyperfine splitting at zero magnetic field Sohtaro Kanda HINT2015 Conference
Direct measurement of muonium ground-state hyperfine structure at J-PARC Sohtaro Kanda 日本物理学会 2015年秋季大会
Development of a new positron counting system with SiPM readout for muon spin spectrometers Sohtaro Kanda PhotoDet2015
Development of a beam-profile monitor and positron detector for high-intensity muon beams in the MuSEUM experiment Sohtaro Kanda 日本物理学会 第70回年次大会

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2014

Title Presenter Conference / workshop Links
Status of the New Muonium HFS Experiment at J-PARC/MUSE Patrick Strasser 16th International Workshop on Neutrino Factories and Future Neutrino Beam Facilities (NUFACT2014) Proceedings
Muonium at J-PARC: from fundamental to application Koichiro Shimomura EXA2014 Conference
Measurement of muonium hyperfine splitting at J-PARC Kazuo S. Tanaka EXA2014, poster Conference
Precision measurement of muonium hyperfine splitting at J-PARC Sohtaro Kanda HAWAII2014 Conference
Development of muon/positron detector systems for precision measurement of muonium hyperfine structure at J-PARC under a high-intensity muon beam Sohtaro Kanda 日本物理学会 2014年秋季大会
Precision measurement of muonium hyperfine splitting at J-PARC - Integrated detector system of high-intensity pulsed muon beam experiment Sohtaro Kanda 2nd International Symposium on Science at J-PARC (J-PARC2014) Conference
Precise Measurement of Muonium HFS at J-PARC MUSE Hiroyuki A. Torii 2nd International Symposium on Science at J-PARC (J-PARC2014) Conference / Proceedings
Precision Measurement of Muonium Hyperfine Splitting at J-PARC Sohtaro Kanda 46th Conference of the European Group on Atomic Systems (EGAS46) Conference

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2013

Title Presenter Conference / workshop Links
Precision measurement of muonium hyperfine splitting at J-PARC Sohtaro Kanda Physics of Fundamental Symmetries and Interactions (PSI2013) Conference
Development of a high-rate-capable positron tracking detector and muonium production in vacuum at J-PARC Sohtaro Kanda 日本物理学会 2013年秋季大会
Development of High-Rate Positron Tracker for the Muonium Production Experiment at J-PARC Sohtaro Kanda USM2013

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2012

Title Presenter Conference / workshop Links
Development of a positron tracking detector for the muonium production experiment at J-PARC MUSE Sohtaro Kanda 日本物理学会 2012年秋季大会

↑ Years

2010

Title Presenter Conference / workshop Links
Possibility of precise measurements of muonium HFS at J-PARC MUSE Koichiro Shimomura 12th International Workshop on Neutrino Factories, Superbeams and Beta Beams (NuFact10) Proceedings