CAJ | 학술논문

为了获得高品质束流,BEPCⅡ直线加速器采用相位系统来优化和控制16个速调管的RF相位.相控系统分布:低相位噪声射频信号源作为直线系统的主振荡器;加以恒温水系统控制的稳定相位参考线用以提供相控PAD装置Local输入;基于EPICS操作界面的控制软件用以连接16个控制环路的精确测量并对加在每个速调管前级输入的IФA移相器加以调控;基于能量最大法相位分析测试方法的引入对系统的测试进行了优化从而提高了系统的测试精度.整个系统的建立最终控制了直线因温度缓慢变化引起束流相对加速微波相位偏移而造成的能散度变化.
위료획득고품질속류,BEPCⅡ직선가속기채용상위계통래우화화공제16개속조관적RF상위.상공계통분포:저상위조성사빈신호원작위직선계통적주진탕기;가이항온수계통공제적은정상위삼고선용이제공상공PAD장치Local수입;기우EPICS조작계면적공제연건용이련접16개공제배로적정학측량병대가재매개속조관전급수입적IФA이상기가이조공;기우능량최대법상위분석측시방법적인입대계통적측시진행료우화종이제고료계통적측시정도.정개계통적건립최종공제료직선인온도완만변화인기속류상대가속미파상위편이이조성적능산도변화.
In order to get high beam quality, a RF distribution system is required, with minimal phase drifts and errors in the BEPC Ⅱ linac. The additional installation of phase reference cables and monitoring equipments and stable RF distribution for BEPC linac are finished. The master oscillator is chosen to offer RF signal with low phase noise and a stable phase distribution system is built to deliver RF signal to each used for a phase shifter. Control software based on EPICS is used to connect all the units of the system, and a phasing method based on BPM is adopted to optimize the phase of each klystron. Now the phasing system is installed and tested in the klystron gallery of the BEPC Ⅱ linac.