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射频四级场(RFQ)加速器的水冷具有以下两种功用:首先它可以把射频场发热带走,维持RFQ腔的热稳定性及限制RFQ强体形变幅度;其次,当RFQ失谐时,它还可以用来进行RFQ的调谐,而同时又基本不影响RFQ的射频场分布.由于RFQ粒子的传输效率对射频场的分布极其敏感,在RFQ的运行中不再采用传统的用调谐器对RFQ进行调谐的方法.本文通过热分析,确定了RFQ加速器的水冷管道的数量和布局及最佳工作水温;确定了RFQ失谐时,如何利用水温变化来对RFQ进行调谐的方法.
RFQ accelerator water cooling has two functions: firstly, it can heat away the RF field, maintain the thermal stability of the RFQ cavity and limit the RFQ strength deformation; second, when the RFQ detunes, it It can also be used to tune the RFQ without substantially affecting the RFQ RF field distribution.As RFQ particle transmission efficiency is extremely sensitive to the RF field distribution, RFQ operation is no longer using the traditional tuner RFQ Tuning.This paper determined the number and layout of water cooling pipes and the optimal working water temperature of RFQ accelerator by thermal analysis and how to use the variation of water temperature to tune RFQ when RFQ detuning.