论文信息 - Large-scale accelerator alignment using an inclinometer

Large-scale accelerator alignment using an inclinometer

Abstract 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 μm. 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.

Eiki Okuyama | Tsuyoshi Suwada | Masanori Satoh | Tatsuya Kume | Kazuro Furukawa

[1] Robert J. Hocken,et al. Self-Calibration: Reversal, Redundancy, Error Separation, and ‘Absolute Testing’ , 1996 .

[2] David J. Whitehouse,et al. Some theoretical aspects of error separation techniques in surface metrology , 1976 .

[3] Deutsches Elektronen-Synchrotron Desy,et al. Straightness Measurements for Accelerator Structures , 1995 .

[4] G Makosch,et al. Surface profile measurement with a scanning differential ac interferometer. , 1984, Applied optics.

[5] V Martin,et al. New field programmable gate array-based image-oriented acquisition and real-time processing applied to plasma facing component thermal monitoring. , 2010, The Review of scientific instruments.

[6] Norihiko Kamikubota,et al. The KEKB injector linac , 2003 .

[7] Mika Masuzawa,et al. NEXT GENERATION B-FACTORIES , 2010 .

[8] A. E. Ennos,et al. High accuracy profile measurement of quasi-conical mirror surfaces by laser autocollimation , 1982 .

[9] T Suwada,et al. Experimental study of new laser-based alignment system at the KEK B-factory injector linear accelerator. , 2010, The Review of scientific instruments.