| Budget Amount *help |
¥45,240,000 (Direct Cost: ¥34,800,000、Indirect Cost: ¥10,440,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥21,320,000 (Direct Cost: ¥16,400,000、Indirect Cost: ¥4,920,000)
Fiscal Year 2019: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
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| Outline of Final Research Achievements |
A new cosmic-ray air shower array, ALPAQUITA, is installed in the Bolivian Andes at the altitude of 4,740m. The array operation started smoothly and we obtained an expected angular resolution. Occultation of the cosmic-ray flux by the moon, so-called "moon's shadow" is also observed. We searched for a gamma-ray emission from a supernova remnant RX J1713.7-3946 and obtained its flux upper limits. At around 200TeV, the upper limit is comparable to the one by the most sensitive previous work.
The design of the underground muon detector to improve the sensitivity to gamma-rays is fixed and waiting a construction. Once constructed, ALPAQUITA + 1MD will have a 1-year sensitivity to detect some gamma-ray sources know in the TeV range.
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