Division of Biological Engineering, Monash University, Clayton, VIC 3800, Australia.
J Synchrotron Radiat. 2010 Sep;17(5):624-30. doi: 10.1107/S0909049510025847. Epub 2010 Aug 7.
A high-repetition-rate mechanical shutter with asynchronous control and sub-millisecond operation has been developed and tested for specialist X-ray systems in the field of medical diagnostics and radiation therapy. Capacitor-coupled linear voice coil actuators are utilized to achieve opening and closing speeds as fast as 700 micros for an aperture height of 4 mm. The design allows for asynchronous control, permitting slave operation of the shutter, a feature that is distinctly suitable for a number of applications including particle image velocimetry, where high-frame-rate operation must be accurately synchronized and triggered by the image acquisition sequence of the detector or timing device. The design and construction of the shutter also makes it ideal, with simple and limited modifications, for applications requiring larger apertures, in particular wide beams as found in many synchrotron beamlines.
已经开发和测试了一种用于医学诊断和放射治疗领域专业 X 射线系统的具有异步控制和亚毫秒操作的高重复率机械快门。利用电容耦合线性音圈致动器实现了最快 700 微秒的开启和关闭速度，孔径高度为 4 毫米。该设计允许异步控制，允许快门的从属操作，这一特性非常适合许多应用，包括粒子图像测速法，其中必须通过探测器或定时设备的图像采集序列准确地同步和触发高速率操作。快门的设计和结构也使其非常适合需要更大孔径的应用，特别是在许多同步加速器光束线中发现的宽光束。
