| Issue |
EPJ Web of Conferences
Volume 53, 2013
UHECR 2012 - International Symposium on Future Directions in UHECR Physics
|
|
|---|---|---|
| Article Number | 04005 | |
| Number of page(s) | 6 | |
| Section | Cosmic Ray Observations | |
| DOI | https://doi.org/10.1051/epjconf/20135304005 | |
| Published online | 25 June 2013 | |
https://doi.org/10.1051/epjconf/20135304005
HiRes and TA Composition measurements
Institute for Cosmic Ray Research, the University of Tokyo, Kashiwa, Chiba, Japan
a e-mail: tame@icrr.utokyo.ac.jp
In order to clarify the origin of ultra high energy cosmic rays (UHECRs), it is very important to determine the mass composition. The most effective strategy to determine the mass composition is Xmax technique. Xmax is the atmospheric depth of air shower maximum measured by fluorescence detectors (FDs). HiRes has reported Xmax measurement by FDs which indicated proton dominated mass composition. Now, Telescope Array (TA) experiment has also measured UHECRs with FDs. In this presentation, the detail of mass composition analysis and result of TA experiment will be reported and compared with HiRes experiment.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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