A project of tandem accelerator mass spectrometry facility at Peking Univ

This paper reports on the measurement of 14C and 10Be abundance which uses tandem accelerator mass spectrometry (AMS). To study the cosmogenic nuclides, a project of the tandem AMS facility is being developed in Peking University, supported by NSFC. The research group of this project consists of members of following institutes and departments. They are Institute of Heavy Ion Physics, Department of technical Physics, Department of Archaeology, Department of Geology in Peking University and Shanghai Institute of Nuclear Research. The AMS facility is based on a 1.7 MV Pelletron and a line consisting of ion source, low energy pre-analyzing and injection system, high energy analyzing and transport system, δ-E detector and data acquisition system will be built. As the first step, a sensitivity of 10-14 and a precision of 2% are expected for 14C, and 10-12 and 5-10%, for 10Be respectively