Abstract

A neutron beam line has been constructed at the KEK-proton synchrotron. Neutrons have been produced by the disintegration reactions of deuterons in a 6 cm thick beryllium target. Deuteron beams of 2–6 GeV have provided neutron beams of 1–3 GeV. The neutron flux increases with the deuteron energy. The typical beam intensities obtained were 1 × 10 8, 2 × 10 8, and 3 × 10 8 neutrons per 10 11 deuterons of 2, 4, and 6 GeV, respectively. The neutron-momentum width, Δp p , was measured to be (4 ± 1) % in sigma at 1 GeV.

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