THE NEW GAS STRIPPER AND CHARGE STATE SEPARATOR OF THE GSI HIGH CURRENT INJECTOR
THE NEW GAS STRIPPER AND CHARGE STATE SEPARATOR OF THE GSI HIGH CURRENT INJECTOR
复制标题
GSI 高电流注入器的新型气提器和电荷状态分离器
DOI：
--
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
P. Forck
中科院分区：
文献类型：
--
作者：
W. Barth;P. Forck
GSI Unilac于1999年升级为SIS的大电流注射器。因此，在1.4 MeV/u的剥离截面[1]中，必须建立最高空间电荷条件下的束流输运和多束运行，这是完全新设计的。将介绍汽提塔部分的调试结果。束流传输到新的气提塔，以及空间电荷条件下的荷电状态分析证实了计算结果。来自MEVVA离子源的238U4+束流被新的注入器直线加速器加速，被剥离(具有预期的剥离效率)到带电状态28+，并被新的光谱仪(15度和30度Kicker磁铁)成功分离。用15EMA-40Ar~(10+)束流研究了在最高空间电荷条件下与剥离后加速器的输运和匹配。特别讨论了6d相空间中空间电荷和电荷态对发射度增长的影响。
The GSI Unilac was upgraded as a high current injector for the SIS in 1999. Therefore, the stripping section [1] at 1.4 MeV/u, where a beam transport under highest space charge conditions and multi beam operation had to be established, was completely new designed. Results of the commissioning of the stripper section will be presented. The beam transport to the new gas stripper, and the charge state analysis under space charge conditions confirmed the calculations. A 238 U 4+ beam - coming from a MEVVA ion source and accelerated by the new injector linac- was stripped (with the expected stripping efficiency) to the charge state 28+ and successfully separated by the new spectrometer (15 degree and 30 degree kicker magnets). The transport and matching to the poststripper accelerator under highest space charge conditions was investigated with a 15 emA 40 Ar 10+ beam. Especially space charge and charge state dependent emittance growth effects in 6d-phase space will be discussed.