Comparative Study of Medium Damped and Detuned Linear Accelerator Structures.

Jones, R. M.

Technical Information Center Oak Ridge Tennessee

关键词: Linear accelerators;    Linear colliders;    Beam dynamics;    Alignment;    Damping;   

RP-ID  :  DE2001787238

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Long range wakefields are a serious concern for a future linear collider based on room temperature accelerating structures. They can be suppressed either by detuning and or local damping or with some combination of both strategies. Detuning relies on precisely phasing the contributions of the dipole modes excited by the passage of a single bunch. This is accomplished by controlling individual mode frequencies, a process which dictates individual cell dimensional tolerances. Each mode must be excited with the correct strength; this in turn, determines cell-to-cell alignment tolerances. In contrast, in a locally damped structure, the modes are attenuated at the cell level.