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Large-scale accelerator alignment using an inclinometer
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DOI：10.1016/j.precisioneng.2013.03.009.png)
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A precise inclinometer (Talyvel 4) was adopted for evaluating aligning straightness of the first 71 m of the KEK electron/positron injector linear accelerator (linac). The straightness could be evaluated with a standard deviation of less than 49 mu m. It is in good agreement with those obtained using a conventional alignment telescope and our laser-based alignment system. Error estimation based on the rules of error propagation shows that shape evaluation with a standard deviation of 0.3 mm for a distance of 500 m can be achieved using the proposed method. It indicates that this method is suitable for evaluating straightness of several hundred meters of linacs with sub-millimeter of accuracy. (C) 2013 Elsevier Inc. All rights reserved.
Keyword:
Straightness measurement
Large-scale measurement
Reversal measurement
Inclinometer
Accelerator alignment
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