Design of Prototype Collimator for CSRm

In order to suppress and control the gas desorption process, specifically designed beam catchers (collimators) with lower desorption rate material are installed at the impact positions to stabilize the vacuum system in the high intensity heavy ion accelerator. The test of prototype collimator and measurement of desorption rate will be carried out in the CSRm. The importance of collimation system research at CSRm was described in this paper. The prototype collimator installation position was calculated by the beam loss simulation program. The mechanical design of the vacuum chamber and the vacuum instruments were described. The control system of this collimation system and the beam test plan were also introduced in this paper.