The Superconducting Super Collider Accelerating Complex consists of a cascade of accelerators and each one of them accelerates the beam to some energy and then transfers it to the next stage. The design luminosity of 10/sup 33/Cm/sup -2/s/sup -1/ is obtained by the high efficiency of all stages and the ability to accelerate a beam with as minimum emittance growth as possible. For this purpose the linac pulse length is specified as 9 /spl mu/s in order to minimize the number of target crossings and so to minimize the emittance growth during charge exchange injection into the LEB booster. However, the transient caused by switching on the beam makes up a significant part of the pulse length and can influence the characteristics of the beam. In this paper we present the results of the transient study of the coupled cavity linac and discuss the model that predicts the parametric resonance between the beam and the field distortion set up during the transient.
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机译：超导超级对撞机加速复合体由一系列加速器组成，每个加速器将光束加速到一定能量，然后将其传递到下一个阶段。 10 / sup 33 / Cm / sup -2 / s / sup -1 /的设计光度是通过所有阶段的高效率以及以尽可能小的发射率增长来加速光束的能力而获得的。为此，将直线加速器脉冲长度指定为9 / spl mu / s，以最大程度地减少目标穿越次数，从而最大程度地减少向LEB升压器注入电荷交换过程中的发射率增长。但是，由打开光束引起的瞬变占了脉冲长度的很大一部分，并且会影响光束的特性。在本文中，我们介绍了耦合腔直线加速器瞬态研究的结果，并讨论了预测在瞬态过程中建立的光束与场失真之间的参数共振的模型。
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