论文标题
通过钻石样碳涂层在介电辅助加速结构中抑制多乳酸
Multipactor suppression in dielectric-assist accelerating structures via diamond-like carbon coatings
论文作者
论文摘要
在加速器场中广泛观察到多缸放电，并研究了它们的抑制以提高加速器性能。 介电辅助加速度（DAA）腔是一个站立的加速腔，通过使用介电层的反射，在室温下，在室温下达到超过100,000的Q值； DAA腔预计将与小型RF电源和高级操作一起使用。 到目前为止，多缸的最大加速场已限制为几mV/m。 通过施加类似钻石的碳（DLC）涂层以在不牺牲腔体的Q值的情况下减少二级电子发射系数，我们已经证明，可以将$ 6〜 [{\ rmμs}] $ rf脉冲注入DAA腔中，并以多种多数的速度注入DAA腔。
Multipactor discharges are widely observed in the accelerator field, and their suppression has been studied to improve accelerator performance. A dielectric-assist accelerating (DAA) cavity is a standing-wave accelerating cavity that attains a Q-value of over 100,000 at room temperature by using the reflection of the dielectric layer; the DAA cavity is expected to be used with a small RF power source and high-duty operation. Thus far, the maximum accelerating field of DAA cavities has been limited to a few MV/m by the multipactor. By applying a diamond-like carbon (DLC) coating to reduce the secondary electron emission coefficient without sacrificing the Q-value of the cavity, we have demonstrated that a $6~[{\rm μs}]$ RF pulse can be injected into a DAA cavity with a field of more than 10~[MV/m] while suppressing the multipactor.
