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    • 15. 发明授权
    • Method and apparatus for tuning ion implanters
    • 用于调整离子注入机的方法和装置
    • US07282721B2
    • 2007-10-16
    • US09943625
    • 2001-08-30
    • Terence Sean SullivanDavid S. HolbrookClifford A. Lardin
    • Terence Sean SullivanDavid S. HolbrookClifford A. Lardin
    • H01J37/317
    • H01J37/244H01J37/304H01J37/3171H01J2237/24507H01J2237/31703
    • Methods and apparatus are provided for automatically tuning a charged particle beam system, such as an ion implanter. In one embodiment, a control parameter of a control component located upstream of a target component is modulated, and the beam current downstream of the target component is measured. The beam current measurements provide information that is used to evaluate tuning and, if necessary, to adjust the target component. The target component is typically a slow response component, such as a magnet. In another embodiment, evaluation of tuning is performed by modulating the target parameter and monitoring the effect of such modulation on the beam current. In a further embodiment, the spot size of the charged particle beam is evaluated by scanning the beam across the edge of an aperture and evaluating the sharpness of the beam focus. The tuning algorithms are preferably implemented in localized power supply interfaces for high speed operation.
    • 提供了用于自动调整带电粒子束系统的方法和装置,例如离子注入机。 在一个实施例中,调制位于目标部件上游的控制部件的控制参数,并测量目标部件下游的束电流。 光束电流测量提供用于评估调谐的信息,如有必要,调整目标分量。 目标部件通常是慢响应部件,例如磁体。 在另一实施例中,通过调制目标参数并监视这种调制对波束电流的影响来执行调谐评估。 在另一实施例中,通过扫描光束穿过孔的边缘并评估光束焦点的清晰度来评估带电粒子束的光斑尺寸。 调谐算法优选地在用于高速操作的局部电源接口中实现。