Abstract
Field stability and tuning are critically important for the design of any accelerator. The standing wave structure is under consideration for implementation in the Next Linear Collider. A 15-cavity standing wave accelerator structure was modeled with equivalent circuits in which nearest neighbor coupling was incorporated in the model. Operation in the p and p/2 modes of acceleration was analyzed. To simulate fabricational errors, random and systematic frequency errors were added to the cavities and then subsequently minimized by tuning the first, middle, and last cavities. The p mode of acceleration was found to be more sensitive to errors than the p/2 mode of acceleration. Tuning only three out of an available fifteen cavities was successful in minimizing the errors in the field flatness. The dipole wakefield was also studied for the standing wave structures and compared to that in traveling wave structures.
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