The operation of the HIRFL accelerator has shown that the beam transmission efficiency of the sector focusing cyclotron(SFC) injector line is rather poor. Beam simulations have been performed to investigate the possib...The operation of the HIRFL accelerator has shown that the beam transmission efficiency of the sector focusing cyclotron(SFC) injector line is rather poor. Beam simulations have been performed to investigate the possible causes for this low transmission. It is predicted that the property of transversal coupling of the ion beam from electron cyclotron resonance(ECR) ion source can be an important factor to degrade the beam quality by increasing the beam emittance, resulting in a serious particle loss. An improved operation scheme for the SECRAL associated line has been proposed, and the corresponding experiment was carried out. This paper presents the test results.展开更多
基金Supported by the National Basic Research Program of China(No.2014CB845500)the 100 Talents Program of the CAS(No.Y214160BR0)National Nature Science Foundation of China(No.11221064)
文摘The operation of the HIRFL accelerator has shown that the beam transmission efficiency of the sector focusing cyclotron(SFC) injector line is rather poor. Beam simulations have been performed to investigate the possible causes for this low transmission. It is predicted that the property of transversal coupling of the ion beam from electron cyclotron resonance(ECR) ion source can be an important factor to degrade the beam quality by increasing the beam emittance, resulting in a serious particle loss. An improved operation scheme for the SECRAL associated line has been proposed, and the corresponding experiment was carried out. This paper presents the test results.
