Centers & Labs

Global Research Cluster


Team Leader: Marco Casolino (Ph.D.)
Marco  Casolino(Ph.D.)

Ultra-high energy cosmic rays (UHECR) are charged particles of extragalactic origin, with energy 1020 eV. These particles have the highest energy measured and several times higher than what achievable with ground based accelerators. Their energy is such that they reach the Earth in an almost straight line directly from far away in the cosmos, so determining their direction of travel will provide a clue to their origins, even if the source is invisible. It is expected that these observations will open up an entirely new field of astronomy. The K-EUSO will be the first astronomical Earth observatory designed to look down on the Earth from above, using our atmosphere as a gigantic detector. The telescope consists of a Russian mirror concentrating light on a Japanese built Fresnel lens on a focal surface consisting of a matrix Multi-Anode-Photomultipliers (build in Japan), It will be attached to the exterior of the Russian section of the International Space Station and during its five-year operational life be used to detect UHECR with unprecedented statistics and uniformity above the whole celestial sphere.
Following the completion of K-EUSO we plan to build a larger refractor telescope, JEM-EUSO and put it on the external pallet of the ISS.

Work performed insofar has involved the realization of various prototypes to test all systems of the telescope.
EUSO-TA was installed in Utah, in front of the fluorescence detector of the telescope array collaboration to observe from the ground UHECR showers.
EUSO-Balloon flew for the first time from Timmins, Canada in August 2014. A second, long duration flight is foreseen by 2017.
Mini-Euso, a precursor with 25 cm optics will be placed on the Russian section of the International Space Station by 2017.

Main Research Field

Interdisciplinary science and engineering

Related Research Fields

Complex systems / Mathematical and physical sciences / Biological Sciences


  • Ultra High Energy Cosmic-Rays
  • Space Debris

Selected Publications

  1. "Special Issue on the JEM-EUSO Mission"
    Experimental Astronomy, (40) 1 -326, 2015, ISSN: 0922-6435, (fifteen papers)
  2. Lech Wiktor Piotrowski, Marco Casolino, Livio Conti, Toshikazu Ebisuzaki, Claudio Fornaro, Yoshiya Kawasaki, Yusuke Hachisu, Hitoshi Ohmori, Cristian De Santis, Kenji Shinozaki, Yoshiyuki Takizawa, Yoshihiro Uehara,:
    "On-line and off-line data analysis for the EUSO-TA experiment"
    Nuclear Instruments and Methods in Physics Research A 773, 164–171 (2015) doi: 10.1016/j.nima.2014.08.045
  3. Marco Casolino, Fumiyoshi Kajino, Lech Wiktor Piotrowski, The JEM-EUSO Collaboration,:
    "The JEM-EUSO instrument"
    Experimental Astronomy,1-26, (2014), doi:10.1007/s10686-014-9418-x
  4. J. H. Adams Jr., S. Ahmed, J.-N. Albert, et al.:
    "An evaluation of the exposure in nadir observation of the JEM-EUSO mission"
    Astropart. Phys. 44, 76 (2013) Doi:10.1016/j.astropartphys.2013.01.008
  5. The JEM-EUSO Collaboration:
    "The JEM-EUSO Mission: Contributions to the ICRC 2013"
    33rd International Cosmic Ray Conference , Rio de Janeiro, July, 2013. arXiv:1307.7071 (2013)
  6. M. Casolino, et al, JEM-EUSO COLLABORATION:
    "Detecting ultra-high energy cosmic rays from space with unprecedented acceptance: objectives and design of the JEM-EUSO mission"
    ASTRA 7, 4, 2011, pp.477-482
  7. Yoshiyuki Takahashi:
    "The Jem-Euso Mission"
    New J. Phys. 11 065009, 30 June 2009 arXiv:0910.4187v1
  8. O. Adriani, (alphabetically ordered) M. Casolino et al.:
    "PAMELA Measurements of Cosmic-ray Proton and Helium spectra"
    Science, 332, No.6025, 69-71 (2011)
  9. O. Adriani, (alphabetically ordered) M. Casolino et al.:
    "New Measurement of the Antiproton-to-Proton Flux Ratio up to 100 GeV in the Cosmic Radiation,"
    Phys. Rev. Lett. 102, id. 051101 (2009)
  10. O. Adriani, (alphabetically ordered) M. Casolino et al.:
    "An anomalous positron abundance in cosmic rays with energies 1.5-100GeV,"
    Nature, 458:607-609, 2009,

Lab Members

Principal Investigator

Marco Casolino
Team Leader

Core Members

Yoshiyuki Takizawa
Senior Research Scientist
Hitoshi Ohmori
Research Scientist
Satoshi Wada
Research Scientist
Lech Piotrowski
Special Postdoctoral Researcher
Piergiorgio Picozza
Senior Visiting Scientist
Kenji Shinozaki
Visiting Scientist

Contact information

2-1 Hirosawa, Wako, Saitama 351-0198, Japan

Email: marco.casolino [at]