Report on the Working Group "High Energy Cosmic Ray Observation

We report the activities on the working group "High Energy Cosmic Ray Observation". We have been developing the CALET instrument on-board the Japanese Experiment Module/ Exposed Facility, JEM/EF, of the ISS. We are successfully developing the instruments , and carried out a balloon flight of the proto-type in 2006. The working group hosted two meetings in Japan and two international meetings in US and China to subscribe for the AO of JEM/EF missions by JAXA.