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Communication Dans Un Congrès Année : 2020

Fibre links for the WEAVE instrument: the making of

Shan Mignot
Gilles Fasola
Gavin Dalton
  • Fonction : Auteur
Ellen Schallig
  • Fonction : Auteur
Ian Lewis
  • Fonction : Auteur
Remko Stuik
  • Fonction : Auteur
Kevin Middleton
  • Fonction : Auteur
Georgia Bishop
  • Fonction : Auteur
Don Carlos Abrams
  • Fonction : Auteur
Scott Trager
  • Fonction : Auteur
Jalfonso Alfonso Aguerri
  • Fonction : Auteur
Esperanza Carrasco
  • Fonction : Auteur
Antonella Vallenari
  • Fonction : Auteur
Camille Noûs

Résumé

The WEAVE instrument nearing completion for the William Herschel Telescope is a fiber-fed spectrograph operating in three different modes. Two comprise deployable fibers at the prime focus for point-like objects and small integral field units (IFU), the third is a large IFU placed at the center of the field. Three distinct fiber systems support these modes and route the photons to the spectrograph located on the Nasmyth platform 33m away: the first features 960+940 fibers and is duplicated to allow configuring the fibers on one plate while observation is carried out on the other, the second has 20 hexagonal IFUs featuring 37 fibers each, the third is a large array of 609 fibers with twice the former's diameter. The large number of fibers and the diversity of their instantiation have made procurement of the parts and assembly of the custom cables a challenge. They involve project partners in France, the UK and the Netherlands and industrial partners in France, Canada, the USA and China to combine know-how and compress the schedule by parallelizing assembly of the cables. Besides the complex management that this induces, it has called for revising the fibers' handling to relax tolerances and for a rigorous assessment of the conformity of the products. This paper tells the story of the making of the fiber links, presents the overall organization of the procurement and assembly chains together with the inspection and testing allowing for assessing the conformance of the hardware delivered.
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Dates et versions

hal-03215398 , version 1 (03-05-2021)

Identifiants

Citer

Shan Mignot, Piercarlo Bonifacio, Gilles Fasola, David Horville, Elisabetta Caffau, et al.. Fibre links for the WEAVE instrument: the making of. Modeling, Systems Engineering, and Project Management for Astronomy IX, Dec 2020, Online Only, France. pp.95, ⟨10.1117/12.2562305⟩. ⟨hal-03215398⟩
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