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Realization of the New System to Control the Vibration in Nano-meter Accuracy for Next Generation High Energy Accelerator

实现下一代高能加速器纳米精度振动控制新系统

基本信息

批准号：
16340065
负责人：
YAMASHITA Satoru
金额：
$ 10.37万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

The purpose of the research is to realize a new system to control and cancel the vibration with an accuracy of nanometer level, which is one of the key technologies to realize a new generation high-energy accelerator, such as the International Linear Collider, for the particle physics. The research has been conducted step by step as follows; the measurement of an actual vibration at the accelerator facility, the conceptual design of the mover system, the analyses of the intrinsic vibration of the mover, and detailed design. The structure of the mover designed through the research has been fabricated by Tokko-kiki cooperation Ltd. The mover consists of two stages with different mechanism of the position control, one for the coarse alignment with long dynamic range (4 mm), and one for the accurate control in nano-meter accuracy by piezo actuator put on the top of the coarse mover. The structure realizes both the long dynamic range and accurate control of the position of the surface of th … More e top of the structure where the accelerator devices are put on, which can remove the problematic vibration of the magnet down to nano-meter scale. The performance of the system has been tested. For this purpose we have made a system that consists of a position monitor, ADC to read the signal from the monitor, a PC to analyze and control the system, DAC to control the stretch length of the piezo actuators. The movement accurately controlled has been observed down to 10 nano-meter which is limited simply by accuracy of the position monitor. The performance of the fast feedback to remove the vibration has been tested. A artificial vibration was generated by a vibrator and the actuators are controlled to cancel the vibration. We have demonstrated the cancellation of the vibration at the level of 10-20 nm when the vibrator was operated at 1 Hz with 40 nm pulse height. The reason of the limited accuracy of the feedback was found that the time-loss to read and control the ADC and DAC through the PC, and the accuracy of the monitor, and the system is operated as we have expected. Consequently, we have successfully created a new system to cope with nano-meter vibration for the next generation high-energy accelerator Less

研究的目的是实现纳米级精度的振动控制和抵消系统，这是实现新一代高能粒子加速器（如国际直线对撞机）的关键技术之一。本研究已逐步进行如下：在加速器设施的实际振动的测量，动子系统的概念设计，动子的固有振动的分析，和详细的设计。通过研究设计的动子结构已由Tokko-Kiki Cooperation Ltd.制造。该动子由两个具有不同位置控制机制的阶段组成，一个用于长动态范围（4 mm）的粗对准，另一个用于通过放置在粗动子顶部的压电致动器进行纳米精度的精确控制。该结构实现了大动态范围和表面位置的精确控制， ...更多信息 e加速器装置放置的结构的顶部，这可以将磁体的有问题的振动降低到纳米级。对系统的性能进行了测试。为此，我们已经做了一个系统，包括一个位置监测器，ADC从监测器读取信号，PC分析和控制系统，DAC控制压电致动器的拉伸长度。已观察到精确控制的移动范围低至10纳米，这仅受到位置监视器精度的限制。测试了快速反馈消除振动的性能。通过振动器产生人工振动，并且控制致动器以消除振动。我们已经证明了当振动器以40 nm的脉冲高度以1 Hz操作时，在10-20 nm的水平处的振动被抵消。分析了反馈精度受限的原因，指出PC机读取和控制ADC和DAC的时间损失，以及监控器的精度，系统运行符合预期。因此，我们已经成功地创建了一个新的系统，以科普纳米振动的下一代高能加速器Less