法拉第杯是一种金属制设计成杯状，用来测量带电粒子入射强度的一种真空侦测器。测得的电流可以用来判定入射电子或离子的数量。法拉第杯是用在电学有卓著贡献的麦可·法拉第的姓氏来命名。
可以把物体放在法拉第杯中，用静电计测量其电荷。
This can be done by placing the object in a Faraday cup and measuring the charge with an electrometer.
所述的电机运动控制器输出与移动法拉第杯驱动电机连接；
The moving Faraday cup is driven by the drive motor and is capable of moving along the X horizontal direction in a target chamber.
法拉第杯的形状可以各式各样，决定于被测物体的尺寸和形状。
Faraday cup can have virtually any dimensions, depending on the size and shape of the object to be tested.
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