摘要
Laser cooling of heavy ion beams is the most promising method to realize crystalline beams at storage rings[1].In order to perform the laser cooling experiment of C3+ at the CSRe[2], we tested the laser propagation and controlby using the He-Ne laser at the straight part (about 25 m long) before the experiment. The experimental resultsindicated that the laser was collimated and stable, and the laser intensity was strong enough after a long distancepropagation at the CSRe which satis ed the requirement of laser cooling of heavy ion beams.