CAJ | 학술논문

采用自主开发的电磁粒子模拟软件对中国工程物理研究院研制的1 MeV介质壁质子加速器进行数值仿真,并对影响介质壁加速器的主要参数进行了系统分析,得到了可靠的优化方案. 模拟结果显示:保持加速梯度20 MV/m的情况下,HGI越厚,得到的束流能量峰值越高,束流值越大,需综合考虑加速器尺寸和所需的束流和束能,以选取合适的HGI厚度;峰值电流随加速梯度的减小而增大,即在特定要求,可以通过损失部分加速梯度得到更大的输出电流;输出束流峰值随输入电流大小线性增长,且输入束流每增加3 mA,对应输出峰值增加0.12 A,增长比率为1:40;输出束流峰值随输入束流半径的增加而减少,随法兰内半径的增大而增加;随着延时间距的增大,束流先增大后减小,最佳延时为21,21.5,21.7 ns,且电流值为不考虑延时的1.73倍.
채용자주개발적전자입자모의연건대중국공정물리연구원연제적1 MeV개질벽질자가속기진행수치방진,병대영향개질벽가속기적주요삼수진행료계통분석,득도료가고적우화방안. 모의결과현시:보지가속제도20 MV/m적정황하,HGI월후,득도적속류능량봉치월고,속류치월대,수종합고필가속기척촌화소수적속류화속능,이선취합괄적HGI후도;봉치전류수가속제도적감소이증대,즉재특정요구,가이통과손실부분가속제도득도경대적수출전류;수출속류봉치수수입전류대소선성증장,차수입속류매증가3 mA,대응수출봉치증가0.12 A,증장비솔위1:40;수출속류봉치수수입속류반경적증가이감소,수법란내반경적증대이증가;수착연시간거적증대,속류선증대후감소,최가연시위21,21.5,21.7 ns,차전류치위불고필연시적1.73배.
In this paper , 1 MeV dielectric wall proton accelerator which is developed by China Academy of Engineering Physics was numerically simulated by the self -developed electromagnetic particle simulation software .A reliable optimization scheme was obtained after the system analyzing of its major parameters . The simulation results are the following:With the accelerating gradient of 20 MV/m, the thicker the HGI is, the higher beam energy peak and beam value become .Accelerator's size, the needed beam and beam energy should be considered synthetically in order to choose a suitable thick of HGI .The peak current in-creases with the accelerating gradient decreasing , which means larger output current would be obtained by losing part of accelerating gradient in the specific requirements .The output beam peak grows linearly with the input current and when the input current increases by every 3 mA, the output beam peak increases by 0.12 A, in which growth rate is 1:40.The output beam peak decreases with the input beam radius in-creasing and increases with the flange inner radius increasing .With the rise of delay interval , the beam current increases first and then decreases .The optimal delay are 21, 21.5, 21.7 ns and the current is 1.73 times the value of the one without considering the delay .