Beam Cooling, Space Charge Effects and Compensation, Beam Manipulation and Photocathode Code Development

该奖项将支持低能高强度同步加速器中空间电荷占主导地位的光束的光束动力学问题的研究，光束检测和操纵技术，包括光束冷却反馈校正，高亮度存储环，以及光电阴极代码的开发。我们将与国家实验室的科学家合作，在各种加速器上开展束流动力学的实验和理论研究，以提高核物理和粒子物理实验的强度。这些研究课题对利用高亮度粒子束进行核物理和粒子物理研究具有重要意义。本研究对加速器物理研究生和本科生的培养也具有重要意义。许多加速器科学家都毕业于印第安纳大学。这些科学家已经成为国家实验室中领先的加速器物理学家。我们的研究课题在提供物理模型以理解混沌、奇异和极限循环吸引子以及具有束流冷却的非线性束流动力学的分叉特征等方面具有智慧价值。先进的光束操纵和检测可以为更广泛的科技界提供更好的数据处理和分析方面的了解。这些结果已被用来控制和缓解高强度存储环中的集体束流不稳定性，并对等离子体物理中的不稳定性有了更好的理解。我们的实验和理论研究成果在提供更好的光束质量、更好的高能对撞机电源纹波设计标准、保持高亮度光束发射度的新方法、更好的紧凑型医疗同步加速器设计、高增益自由电子激光的物理理解等方面也产生了更广泛的影响。高亮度光束的一些应用包括放射性离子束加速器、散裂中子源、重离子聚变、生物化学和生物医学、材料科学、改进的医疗和国防研究等。

This award will support the study of beam dynamics problems in space-charge dominated beams in low-energy high intensity synchrotrons, beam detection and manipulation techniques including beam cooling feedback correction, in high brightness storage rings, and development of a photocathode code. In collaboration with scientists in national laboratories, we will carry out experimental and theoretical studies on beam dynamics at various accelerators in order to increase intensity for nuclear and particle physics experiments. These proposed research topics are important to nuclear and particle physics research using high brightness particle beams. The proposed research is also important in training accelerator physics graduate and undergraduate students. Many accelerator scientists have graduated from Indiana University. These scientists have become leading accelerator physicists in national laboratories. Topics of our research have intellectual merit in providing physics models to understand phenomena such as chaos, strange and limiting cycle attractors, and bifurcation characteristics of nonlinear beam dynamics with beam cooling. The advanced beam manipulation and detection can provide better understanding in data handling and analysis for a broader community in science and technology. These results have been employed to control and alleviate collective beam instabilities in high intensity storage rings, and to achieve better understanding on the instability in plasma physics. Our experimental and theoretical research results also have broader impact in providing improved beam quality, better design criterion for power supply ripple in high energy colliders, new methods for emittance preservation of high brightness beams, better design of compact medical synchrotrons, physics understanding of high gain free electron lasers, etc. Some applications of high brightness beams are radioactive ion-beam accelerators, spallation neutron sources, heavy ion fusion, biochemistry and bio-medical, material science, improved medical treatment, and defense research.