论文标题
紧凑，高梯度X波段的概念研究具有新型激光耦合方案
Concept Study of a Compact, High Gradient X-band Travelling Wave RF Photogun with Novel Laser Coupling Scheme
论文作者
论文摘要
本文介绍了以11.994 GHz的欧洲X波段频率运行的波动波RF Photogun的设计。该设计基于从铜两半铣削的CLIC原型结构，并使用几何学中引入的独特差距将夫妇置于激光器中，而不会阻塞传出的电子束。与常驻波RF PhotoGun相比，枪支具有适度的峰值输入功率为19 MW，填充时间为48 ns，可以以非常高的RF脉冲重复速率进行操作。对于其标称输入功率，阴极的峰值梯度为91 mV/m，整个枪支的梯度为65 mV/m。该枪被说明，以14.15 MEV的价格提供80 pc，其重复速率为0.14 $ \％$ rms Energy扩散，发射率为0.6毫米MRAD，重复速度至少为450 Hz。
This paper presents the design of a travelling wave RF photogun operating at the European X-band frequency of 11.994 GHz. The design is based on a CLIC prototype structure milled from copper halves and uses the unique gap introduced in the geometry to couple in the laser without obstructing the outgoing electron beam. With a modest peak input power of 19 MW and a fill time of 48 ns, the gun has the ability to operate at very high RF pulse repetition rates in comparison to standing wave RF photoguns. For its nominal input power, the cathode has a peak gradient of 91 MV/m and the entire gun has a gradient of 65 MV/m. The gun is illustrated to provide an 80 pC bunch at a 14.15 MeV with a 0.14 $\%$ RMS energy spread and an emittance of 0.6 mm mrad at a repetition rate of at least 450 Hz.
