Abstract
We propose to build a large water-Cherenkov-type muon-detector array (Tibet MD array) around the 37∈000 m2 Tibet air shower array (Tibet AS array) already constructed at 4300 m above sea level in Tibet, China. Each muon detector is a waterproof concrete pool, 6 m wide × 6 m long × 1.5 m deep in size, equipped with a 20 inch-in-diameter PMT. The Tibet MD array consists of 240 muon detectors set up 2.5 m underground. Its total effective area will be 8640 m2 for muon detection. The Tibet MD array will significantly improve gamma-ray sensitivity of the Tibet AS array in the 100 TeV region (10-1000 TeV) by means of gamma/hadron separation based on counting the number of muons accompanying an air shower. The Tibet AS+MD array will have the sensitivity to gamma rays in the 100 TeV region by an order of magnitude better than any other previous existing detectors in the world.
Original language | English |
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Pages (from-to) | 435-439 |
Number of pages | 5 |
Journal | Astrophysics and Space Science |
Volume | 309 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 2007 Jun |
Keywords
- Cosmic ray
- Gamma ray
- Muon
- SNR
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science