Works


Projects

The MEG II experiment

The MEG II experiment searches for the charged-lepton-flavour-violating rare muon decay, μ→eγ with a target sensitivity of 6×10-14.
I worked on photon measurement with the liquid xenon calorimeter and background suppression with auxiliary detectors.

My major contributions are listed below. All papers are available on the pages listed here.

  • "New limit on the μ+ → e+γ decay with the MEG II experiment"
    K. Afanaciev, et al. (MEG II Collaboration)
    Phys. Rev. Lett. (Submitted)
    arXiv:2504.15711
  • "Photon energy reconstruction with the MEG II liquid xenon calorimeter"
    K. Yamamoto, S. Ban, L. Gerritzen, T. Iwamoto, S. Kobayashi, A. Matsushita, T. Mori, R. Onda, W. Ootani, and A. Oya
    EPJ Web Conf. 320 (2025), 00030
    DOI:10.1051/epjconf/202532000030, arXiv:2407.19417
  • "A search for μ+ → e+γ with the first dataset of the MEG II experiment"
    K. Afanaciev, et al. (MEG II Collaboration)
    Eur. Phys. J. C 84 (2024), 216 (peer reviewed)
    DOI:10.1140/epjc/s10052-024-12416-2, arXiv:2310.12614
    [Erratum: Eur. Phys. J. C 84 (2024), 1042. DOI:10.1140/epjc/s10052-024-13352-x]
  • "Operation and performance of the MEG II detector"
    K. Afanaciev, et al. (MEG II Collaboration)
    Eur. Phys. J. C 84 (2024), 190 (peer reviewed)
    DOI:10.1140/epjc/s10052-024-12415-3, arXiv:2310.11902
  • "Prototype study of 0.1% X0 and MHz/cm2 tolerant Resistive Plate Chamber with Diamond-Like Carbon electrodes"
    K. Ieki, W. Li, A. Ochi, R. Onda, W. Ootani, A. Oya, M. Takahashi, and K. Yamamoto
    Nucl. Instrum. Meth. A 1064 (2024), 169375 (peer reviewed)
    DOI:10.1016/j.nima.2024.169375, arXiv:2401.13553
  • "Development of ultra-low mass and high-rate capable RPC based on Diamond-Like Carbon electrodes for MEG II experiment"
    K. Yamamoto, S. Ban, K. Ieki, A. Ochi, R. Onda, W. Ootani, A. Oya, and M. Takahashi
    Nucl. Instrum. Meth. A 1054 (2023), 168450 (peer reviewed)
    DOI:10.1016/j.nima.2023.168450, arXiv:2211.12172

List of papers

A list of papers is available at the following pages:

Theses

  1. "Development of ultra-low mass and high-rate capable resistive plate chamber for background reduction in the MEG II experiment"
    K. Yamamoto
    Master's thesis, The University of Tokyo, January 2022 (Thesis) (Slide) (in Japanese)
  2. "Performance test of a fast-response scintillator and evaluation of capability to identify directions of charged particles using a detector simulation in the J-PARC E69 experiment (WAGASCI project)"
    K. Yamamoto
    Bachelor's thesis, Yokohama National University, February 2019 (Thesis) (Slide) (in Japanese)

Interview and introduction to ICEPP