Selecting the electromagnetic actuator of the ELT primary mirror

Ciro Del Vecchio; Fabrizio Marignetti; Armando Riccardi; Maurizio Scarano; Piergiacomo Cancelliere

doi:10.1117/12.671372

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27 June 2006 Selecting the electromagnetic actuator of the ELT primary mirror

Ciro Del Vecchio, Fabrizio Marignetti, Armando Riccardi, Maurizio Scarano, Piergiacomo Cancelliere

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Proceedings Volume 6272, Advances in Adaptive Optics II; 62724Y (2006) https://doi.org/10.1117/12.671372
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

The segmented, adaptive primary mirror of the ELT is the most delicate optical component of the telescope. Its full-adaptive operational modes require an high bandwidth actuation system, able to provide large and precise stroke motions. As the core component of the actuation system hardware, the electromagnetic device has to be accurately designed. This paper depicts the preliminary electromagnetic study of the actuator. After a discussion of the chosen concept, the design process and the computational approach are illustrated. The goal of the study is the definition of the basic geometrical and physical parameters which allow the minimization of the power dissipated to deliver the proper actuation force, in order to reduce the local overheating in the telescope optical path.

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Ciro Del Vecchio, Fabrizio Marignetti, Armando Riccardi, Maurizio Scarano, and Piergiacomo Cancelliere "Selecting the electromagnetic actuator of the ELT primary mirror", Proc. SPIE 6272, Advances in Adaptive Optics II, 62724Y (27 June 2006); https://doi.org/10.1117/12.671372

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