Status of the HIRFL–CSR complex

Abstract The HIRFL–CSR, as an upgrade of the HIRFL, has been put into operation since 2008. Together with a series of improvements of injector cyclotrons, the HIRFL is in a very good state and can provide all ion species from proton to uranium with energy variable from ion source energy to 1 GeV/u ( A / q  = 2). Present status of the HIRFL–CSR complex is given. Main features realized during the commissioning and operation are described in detail. The progress on physics experiments and cancer therapy are also presented.