A newly designed vacuum Compton gamma-ray detector with Ta-Al clad-metal electron converter plate is described. The detecting efficiency for 1.25MeV gamma-ray is 7.85�10-3 electron/, which is 2.5 times higher than that with Fe converter plate. The designed detector has the merits of well processed and static vacuum keeping and can be used for intense pulsed gamma ray detecting.

A newly designed vacuum Compton gammaray detector with TaAl cladmetal electron converter plate is described. The detecting efficiency for 1.25 MeV gammaray is 7.85×103 electron/γ, which is 2.5 times higher than that with Fe converter plate. The designed detector has the merits of well processed and static vacuum keeping and can be used for intense pulsed gamma ray detecting.