BISOL相邻两电荷态相同质量重离子束相位能量调节的物理设计  

Physics design of phase and energy adjustment for heavy ion beam of the same mass with two-charge state on BISOL

作　　者：朱飞[1] 彭朝华[1] 郑健[1] 李爱玲[1] 周立鹏[1] 胡跃明[1] 

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413

出　　处：《核技术》2017年第11期18-22,共5页Nuclear Techniques

摘　　要：放射性核束物理是国际核物理研究的前沿,滴线区新物理、铁以上重元素的天体合成过程、超重稳定岛核素合成等关键科学问题的突破将对整个自然科学产生重大影响,这些研究都需要高强度的极端丰中子核束。将中国先进研究堆及强流氘离子加速器打靶产生的放射性核束传输至物理终端,采用两电荷态束流同时加速可以有效提高束流强度;通过分析离子束分离注入同步加速原理,采用静电高压调节离子束相位差,速率调节器同步离子束能量,分别计算得到不同种类核束引出电压参数和速率同步参数;同时分析计算了电压调节与离子束相位差变化关系,得到电压调节参数。计算结果表明,当调节电压幅值取±8 k V时,可满足不同种类离子相位调节需求。Background： The breakthroughs in researches on drip line of new physics and the process of celestial synthesis of heavy elements above iron and nuclide synthesis of super heavy island would have a significant impact on natural science, and in which high-intensity neutron rich beam plays an indispensable part. Purpose： The radioactive beam produced by China advanced research reactor （CARR） and the high intensity deuteron accelerator is transmitted to the physical terminal, and the beam intensity can be effectively enhanced by the simultaneous acceleration of the two-charge state beam. Methods： Based on the principles of scatter injection and synchronous acceleration for ion beam, the high voltage was used to adjust the phase difference of the ion beam, and the speed regulator to synchronize the ion beam energy, the extraction-voltage and rate-synchronization parameters of different kinds of ion beam are calculated, respectively. Voltage regulation parameters are obtained by analyzing the relationship between voltage regulation and phase difference of ion beam. Results： The results show that with regulate voltage at ±8 kV, phase adjustment for different types of ion beam can be satisfied. Conclusion： Physics design parameters can meet the requirement of engineering construction.

关 键 词：相位调节 能量调节 放射性核束 高压 

分 类 号：TL53[核科学技术—核技术及应用]