| CALET | (2009-) | CALorimetric Electron Telescope |
| CANGAROO | (1993-2011) | Collaboration of Australia and Nippor for a GAmma Ray Observartory in the Outback |
| CheSS [Japanese] | (1998-2004) | Cherenkov light detecting System on SUBARU |
| EGRET | (1995-1996) | Energetic Gamma Ray Experiment Telescope on the Compton Gamma Ray Observatory satellite |
| Superkamiokande | (1988-1997) | Super KAMIOKA Nucleon Decay Experiment |
| Kamiokande | (1988-1995) | KAMIOKA Nucleon Decay Experiment |
| JANZOS | (1987-1989) | Japan New Zealand Observation of Supernova [Search for ultra-high-energy gamma-rays from SN1987A using an air shower array in New Zealand] |
| SPICA | (1986-1989) | Special Instrument for Cosmic-ray Astrophysics [Search for ultra-high-energy gammar-rays using an air shower array at the Akeno observatory] |
| Search for cosmic magnetic monopoles | (1985-1987) | Search for slowly-moving magnetic monopoles using an air shower calorimeter at the Akeno observartory, Yamanashi, Japan |
(Years show periods of my participation.)