Test results of the HIRFL-CSR cluster target

The HIRFL-CSR internal target can operate in two modes: cluster target mode and polarized target mode. The cluster target may provide the gas target of H-2, N-2, inert gases and small molecular gases. The test experiments have been done for H-2, N-2 and Ar gases. The target thicknesses of 6.6 x 10(12), 1.2 x 10(13) and 1.0 x 10(13) atoms/cm(2) are obtained for H-2, N-2 and Ar gases, respectively. In this paper, the structure and the test results of the HIRFL-CSR cluster target system are reported. (c) 2005 Elsevier B.V. All rights reserved.