文章介绍了自主研发的高能量电子枪的原理、设计和测试结果。该电子枪主要由电子发射组件、电磁聚焦组件、电磁偏转组件、差分抽真空维持机构和控制电源构成,可以发射、聚焦并偏转高能量电子。测试结果显示,电子枪发射的电子能量最大可...文章介绍了自主研发的高能量电子枪的原理、设计和测试结果。该电子枪主要由电子发射组件、电磁聚焦组件、电磁偏转组件、差分抽真空维持机构和控制电源构成,可以发射、聚焦并偏转高能量电子。测试结果显示,电子枪发射的电子能量最大可达30 ke V,加速电压和发射电流成正比例对应关系,电子束斑直径在100μm以下,电子束偏转角度大于5°。通过实测Si(111)单晶体,获得了良好的电子衍射图像。展开更多
Injection and extraction are usually the key systems in circular accelerators.They play important roles in transferring the beam from one stage acceleration to the other or to experimental stations.It is also in the i...Injection and extraction are usually the key systems in circular accelerators.They play important roles in transferring the beam from one stage acceleration to the other or to experimental stations.It is also in the injection and extraction regions where beam losses happen mostly.Due to the tight space and to reduce the perturbation to the circulating orbit,the devices are usually designed to meet special requirements such as compactness,small stray field,fast rise time or fall time,etc.Usual injection and extraction devices include septum magnets,kicker magnets, electrostatic deflectors,slow bump magnets and strippers.In spite of different accelerators and specification for the injection and extraction devices,many techniques are shared in the design and manufacturing.This paper gives a general review on the techniques employed in the major circular accelerators in China.展开更多
文摘文章介绍了自主研发的高能量电子枪的原理、设计和测试结果。该电子枪主要由电子发射组件、电磁聚焦组件、电磁偏转组件、差分抽真空维持机构和控制电源构成,可以发射、聚焦并偏转高能量电子。测试结果显示,电子枪发射的电子能量最大可达30 ke V,加速电压和发射电流成正比例对应关系,电子束斑直径在100μm以下,电子束偏转角度大于5°。通过实测Si(111)单晶体,获得了良好的电子衍射图像。
文摘Injection and extraction are usually the key systems in circular accelerators.They play important roles in transferring the beam from one stage acceleration to the other or to experimental stations.It is also in the injection and extraction regions where beam losses happen mostly.Due to the tight space and to reduce the perturbation to the circulating orbit,the devices are usually designed to meet special requirements such as compactness,small stray field,fast rise time or fall time,etc.Usual injection and extraction devices include septum magnets,kicker magnets, electrostatic deflectors,slow bump magnets and strippers.In spite of different accelerators and specification for the injection and extraction devices,many techniques are shared in the design and manufacturing.This paper gives a general review on the techniques employed in the major circular accelerators in China.
