A high-precision position measurement instrument for collimators
Martino, Michele
Autor: | Martino, Michele |
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Veröffentlichungsdatum: | 10.02.2013 |
EAN: | 9783659334115 |
Sprache: | Englisch |
Seitenzahl: | 216 |
Produktart: | Kartoniert / Broschiert |
Verlag: | LAP LAMBERT Academic Publishing |
Untertitel: | Theory, Design, Simulations and Experimental Results within the LHC Collimation Control System |
Produktinformationen "A high-precision position measurement instrument for collimators"
An innovative high-precision digital instrument for position measurement of particle accelerators collimators is proposed. The instrument relies on Linear Variable Differential Transformer by exploiting the three-parameter sine fit to estimate the amplitudes of their secondary signals. Moreover, the crucial problem of interfering magnetic fields is thoroughly analyzed by means of two different models: an analytical one aimed at capturing the main physics of the phenomenon and a predictive one based on Finite Elements Method. Both models have been validated by means of simulations and experimental measurements. They provide a basis for design guidelines to an application-independent solution of the interference problem. The experimental validation of the models comprises the development of a measurement method and a measurement system for the general characterization of external magnetic fields as influence quantities for the position measurement by means of Linear Variable Differential Transformer sensors. Preliminary on-field results, gathered during Large Hadron Collider commissioning and operation at CERN, confirming the laboratory results are reported.

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