Number of Staff
| (As of 1-May-2013) | |||
| Prof. | 9 (0) [2] <0> | Associate Prof. | 15(0) [2] <0> |
| Assistant prof. | 27(2) [0] <0> | Research Fellows | 10 (2) [0] |
| Technical Staff | 8 (2) | Administrative Staff | 9 (3) [0] <0> |
| Adjuncts | 41 (32) [0] | Total | 119 (41) [4] <0> | ( ) female staff [ ] guest members < > foreign staff |
Successive Directors
Cosmic Ray Observatory, the University of Tokyo
| Director | Morizo Hirata | 08/01/53 - 08/31/55 |
| Director | Seisi Kikuchi | 09/01/55 - 09/21/59 |
| Acting Director | Itaru Nonaka | 09/22/59 - 07/31/60 |
| Acting Director | Hiroo Kumagaya | 08/01/60 - 11/30/60 |
| Director | Itaru Nonaka | 12/01/60 - 03/31/70 |
| Director | Kouichi Suga | 04/01/70 - 03/31/72 |
| Director | Saburo Miyake | 04/01/72 - 05/24/76 |
Institute for Cosmic Ray Research, the University of Tokyo
| Director | Saburo Miyake | 05/25/76 - 03/31/84 |
| Director | Kouichi Kamata | 04/01/84 - 03/31/86 |
| Director | Ichiro Kondo | 04/01/86 - 03/31/87 |
| Acting Director | Goro Tanahashi | 04/01/87 - 04/30/87 |
| Director | Jiro Arafune | 05/01/87 - 03/31/97 |
| Director | Yoji Totsuka | 04/01/97 - 03/31/01 |
| Director | Motohiko Yoshimura | 04/01/01 - 03/31/04 |
| Director | Yoichiro Suzuki | 04/01/04 - 08/03/31 |
| Director | Takaaki Kajita | 08/04/01 - |
Norikura Observatory
| Acting Director | Saburo Miyake | 05/25/76 - 02/28/77 |
| Director | Ichiro Kondo | 03/01/77 - 03/31/87 |
| Director | Toshinori Yuda | 04/01/87 - 03/31/00 |
| Director | Mitsuhiro Fukushima | 04/01/00 - 03/31/03 |
| Director | Masato Takita | 04/01/03 - |
Akeno Observatory
| Director | Koichi Kamata | 04/18/77 - 03/31/84 |
| Director | Goro Tanahashi | 04/01/84 - 03/31/88 |
| Director | Motohiko Nagano | 04/01/88 - 03/31/98 |
| Director | Masahiro Teshima | 04/01/98 - 12/31/02 |
| Director | Masami Fukushima | 01/01/03 - 03/31/12 |
| Director | Hiroyuki Sagawa | 04/01/12 - |
Kamioka Observatory
| Director of Institution | Yoji Totsuka | 04/01/95 -09/30/02 |
| Director of Institution | Yoichiro Suzuki | 10/01/02 - |
Research Center for Cosmic Neutrinos
| Director of Center | Takaaki Kajita | 04/01/99 - |