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arXiv 1502.02055physics.acc-ph
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μ子对撞机高压充气RF腔的研究

Study of high pressure gas filled RF cavities for muon collider

Katsuya Yonehara

摘要:

μ子对撞机是下一代高能轻子对撞机的重要候选者。在多特斯拉磁体中操作RF腔是μ子加速器和冷却通道中的关键要求。然而,真空RF腔中的最大RF梯度受到外部磁场的强烈限制。由于在强磁场中能产生高的射频加速梯度,同时又能进行电离冷却,因此有人提出了用浓氢气体填充射频腔的方案。腔的关键问题是消耗相当大量的RF功率的束诱导等离子体。在费米实验室用强质子束测量了由束流诱导等离子体引起的射频负载。通过在致密氢中掺杂电负性气体,等离子体负载效应显著减轻。结果表明,该腔在μ子对撞机束流作用下是可行的。本报告介绍了最近的进展情况。

英文摘要:

Muon collider is a considerable candidate of the next-generation high-energy lepton collider machine. Operating an RF cavity in a multi-Tesla magnet is a critical requirement in a muon accelerator and a cooling channel. However, the maximum RF gradient in a vacuum RF cavity is strongly limited by an external magnetic field. Dense hydrogen gas filled RF cavity has been proposed since it is functional of generating a high RF accelerating gradient in a strong magnetic field and making an ionization cooling process at the same time. A critical issue of the cavity is a beam- induced plasma that consumes a considerable amount of RF power. The gas filled RF test cell was made and measured the RF loading due to a beam-induced plasma by using an intense proton beam at Fermilab. By doping an electronegative gas in dense hydrogen, the plasma loading effect is significantly mitigated. The result shows that the cavity is functional with a muon collider beam. Recent progress is shown in this presentation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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