Prime Focus Spectrograqph (PFS): fiber optical cable and connector system (FOCCoS) - intergration

Antonio Cesar de Oliveira Sr.; Ligia Souza de Oliveira Sr.; Décio Ferreira; Lucas Souza Marrara Sr.; Leandro Henrique dos Santos; Josimar Aparecido Rosa; Rodrigo Pedro de Almeida; Ricardo Luciano da Costa Sr.; James E. Gunn Sr.; Yuki Moritani Sr.; Naoyuki Tamura Sr.; Naruhisa Takato Sr.; Laerte Sodré Junior; Graham Murray Sr.; David Le Mignant Sr.; Fabrice Madec; Kjetil Dohlen Sr.; Shiang-Yu Wang Sr.; Masahiko Kimura Sr.; Yin-Chang Chang Sr.; Hsin-Yo Chen; Daniel J. Reiley; Mitsko Roberts; Brent Belland

doi:10.1117/12.2629555

29 August 2022 Prime Focus Spectrograqph (PFS): fiber optical cable and connector system (FOCCoS) - intergration

Antonio Cesar de Oliveira Sr., Ligia Souza de Oliveira Sr., Décio Ferreira, Lucas Souza Marrara Sr., Leandro Henrique dos Santos, Josimar Aparecido Rosa, Rodrigo Pedro de Almeida, Ricardo Luciano da Costa Sr., James E. Gunn Sr., Yuki Moritani Sr., Naoyuki Tamura Sr., Naruhisa Takato Sr., Laerte Sodré Junior, Graham Murray Sr., David Le Mignant Sr., Fabrice Madec, Kjetil Dohlen Sr., Shiang-Yu Wang Sr., Masahiko Kimura Sr., Yin-Chang Chang Sr., Hsin-Yo Chen, Daniel J. Reiley, Mitsko Roberts, Brent Belland

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 1218474 (2022) https://doi.org/10.1117/12.2629555
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

In this paper, we present the beginning of the last phase of the integration process of the FOCCoS subsystem, "Fiber Optical Cable and Connector System", to be installed on the Subaru telescope as part of the PFS (Prime Focus Spectrograph) project ^[01]. FOCCoS consists of the 3 cables (A, B and C) to integrate and operate the instruments easily ^[02]. At the present stage, we are about to complete the integration of the 3 cables by building Cable B that intermediates the telescope’s light gathering and light output devices for the spectrographs. Cable B, which is ~55m long, is subdivided into 4 units. Each unit has 600 optical fibers inserted into segmented tubes that are helically stranded around the tensile core element and inserted into a flexible metal conduit, which was made by industrial process. The construction of Cable B unit involves a coherent fiber distribution for a required mapping between the light collecting ends and the output ends positioned on the slits. Multi-fiber connector bench, strain relief boxes, and connection monitoring fiber devices are being built as part of subsystem integration process. Specific FRD measurement procedures for Cable B have been fully developed and implemented. The measurements are so far indicating similarly good results to those obtained in the evaluation of fibers from Cables A and C. For Cable B, FRD of some fibers has been traced to monitor the impact of the integration process.

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Antonio Cesar de Oliveira Sr., Ligia Souza de Oliveira Sr., Décio Ferreira, Lucas Souza Marrara Sr., Leandro Henrique dos Santos, Josimar Aparecido Rosa, Rodrigo Pedro de Almeida, Ricardo Luciano da Costa Sr., James E. Gunn Sr., Yuki Moritani Sr., Naoyuki Tamura Sr., Naruhisa Takato Sr., Laerte Sodré Junior, Graham Murray Sr., David Le Mignant Sr., Fabrice Madec, Kjetil Dohlen Sr., Shiang-Yu Wang Sr., Masahiko Kimura Sr., Yin-Chang Chang Sr., Hsin-Yo Chen, Daniel J. Reiley, Mitsko Roberts, and Brent Belland "Prime Focus Spectrograqph (PFS): fiber optical cable and connector system (FOCCoS) - intergration", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 1218474 (29 August 2022); https://doi.org/10.1117/12.2629555

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