论文部分内容阅读
研究了重离子加速器中束流与真空中剩余气体的碰撞损失过程和碰撞截面，在依据大量实验数据的基础上，提出了一组计算离子一原子的电荷交换截面的经验公式，以兰州重离子加速器ＨＤＲＦＬ及冷却储存环ＣＳＲ为例，给出了依据碰撞截面的公式计算束流在加速器真空中的传输效率的方法，并计算了在不同真空度下ＨＩＲＦＬ的ＥＣＲ源轴向注入束运线、注入器ＳＦＣ、前束运线、主加速器ＳＳＣ和后束运线等不同加速阶段及ＣＳＲ的传输效率，并提出合理的真空度要求。ＨＩＲＦＬ的真空分布测量和束流的损失测量证明了该计算方法的可靠性。
Based on the large amount of experimental data, a set of empirical formulas for calculating the charge-exchange cross-section of ions and atoms is proposed. The heavy ion accelerator Accelerator HDRFL and cooling storage ring CSR as examples, a method of calculating the beam transmission efficiency in accelerator vacuum according to the formula of collision cross section is given, and the axial injection ECL source of HIRFL at different vacuum degrees is calculated. Injector SFC, the former beam line, the main accelerator SSC and after the beam line and other acceleration stages and CSR transmission efficiency, and put forward a reasonable degree of vacuum requirements. HIRFL vacuum distribution measurement and beam loss measurement proved the reliability of the calculation method.