- 2009/04 - 2021/03 John Adams Institute (UK) Advisory Board, member
- 2011/03 - 2012/03 TESLA Technology Collaboration Technical Board, Chair
- 2010/04 - 2012/03 高エネルギー加速器研究機構 国際協力推進室
- 2005/04 - 2012/03 高エネルギー加速器研究機構 LC推進室
- 2008/01 - 2011/03 ILC Research Directorate International Detector Advisory Group (IDAG), member
- 2006/02 - 2011/03 TESLA Technology Collaboration Executive Committee
- 2008/09 - 2010/12 CERN CLIC Accelerator Advisory Committee, member
- 2002/05 - 2009/12 DESY Machine Advisory Committee, member
- 2009/01 - 2009/03 STFC (UK) Accelerator CoE Review Committee, member
- 2005/01 - 2005/12 FNAL URA Visiting Review Committee, member
- 2000/05 - 2004/08 SLAC NLC Machine Advisory Committee, Member
- 2001/04 - 2002/11 OECD Consultative Group on High Energy Physics, member
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