Beam Transfer Functions and Nonlinear Dynamics at IUCF Cooler

9512832李研究将在加速器物理领域进行。这项工作主要集中在圆形加速器中的束流动力学，重点是非线性导波元件的影响和与高束强相关的相干不稳定性。印第安纳大学回旋加速器设施(IUCF)将用于这项研究。它提供了一种粒子束，根据相空间中的位置进行了很好的定义，并且可以对单个束流进行数千圈的跟踪。还将开展高能电子-质子冷却、束流发射度增长和晕圈发展方面的研究。此外，高强度偏振光束将用于偏振光束传输研究，重点是避免去偏振共振。这项研究的好处将从IUCF改进的核物理实验性能扩展到未来对撞机、中子散裂源和同步辐射光源的高性能。上述方面的研究将加深我们对高强度圆形粒子加速器的性能和局限性的理解。这些都是加速器物理学中高度优先的课题。对研究生和博士后的教育是这项活动的组成部分。***

9512832 Lee Research will be carried out in accelerator physics. The work focuses on beam dynamics in circular accelerators with emphasis on the effects of non-linear guide elements and on coherent instabilities associated with high beam intensities. The Indiana University Cyclotron Facility (IUCF) will be used for this research. It provides a particle beam which is very well defined in terms of position in phase space and tracking of individual beam packets can be done for thousands of turns. Studies will also be carried out in high-energy electron-proton cooling and in beam emittance growth and halo development. In addition, the high intensity polarized beam will be used in polarized-beam transport studies, with emphasis on avoidance of depolarization resonances. Benefits of the research will extend from improved performance at IUCF for nuclear physics experiments to high performance in future colliders, neutron spallation sources, and synchrotron light sources. Research in the above areas will advance our understanding of the performance and limitations of high intensity circular particle accelerators. These are high priority topics in accelerator physics. Education of graduate students and postdocs is integral to this activity. ***