2011/09/12 by Hai-Jun Yang, Hai Jun Yang, Tianxiang Chen +5
Decision Sciences · Engineering · Physics and Astronomy · #Advanced Measurement and Metrology Techniques #Advanced Sensor Technologies Research #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Scientific Measurement and Uncertainty Evaluation #hep-ex #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1109.2582
8 pages, Proceedings for the DPF-2011 Conference, Providence, RI, August 8-13, 2011
arxiv created 2011/09/12 · openalex publication_date 2011/09/12 · arxiv updated 2011/09/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, we report high-precision absolute distance and vibration measurements performed with frequency scanned interferometry. Absolute distance was determined by counting the interference fringes produced while scanning the laser frequency. High-finesse Fabry-Perot interferometers were used to determine frequency changes during scanning. A dual-laser scanning technique was used to cancel drift errors to improve the absolute distance measurement precision. A new dual-channel FSI demonstration system is also presented which is an interim stage toward practical application of multi-channel distance measurement. Under realistic conditions, a precision of 0.3 microns was achieved for an absolute distance of 0.57 meters. A possible optical alignment system for a silicon tracker is also presented.