| Budget Amount *help |
¥41,730,000 (Direct Cost: ¥32,100,000、Indirect Cost: ¥9,630,000)
Fiscal Year 2012: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2011: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Fiscal Year 2010: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
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| Research Abstract |
The linearly polarized photon beam is produced by backward-Compton scattering of laser photons from 8 GeV electrons at BL33LEP. The curr ent LEPS facility studies photo-production of hadrons in the forward angles, where the high linear polarization plays an essential role to decompose various reaction processes. New DUV laser was introduced to LEPS, which improved the maximum energy from 2.4 GeV to 3 GeV. The parallel injection system was constructed and the beam intensity was improved by a factor of 2. The penta-quark Θ+study was carried out in the ・ d → K+Kp n reactions. background processes due to γp reactions were identified by energy loss information in a plastic counter that was placed just after the liquid-deuterium target. A clear signal enhancement was seen in the γn contributions.
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