Cryostat and CCD for MEGARA at GTC

MEGARA (Multi-Espectrografo en GTC de Alta Resolucion para Astronomia) is the new integral field unit (IFU) and multi-object spectrograph (MOS) instrument for the GTC. The spectrograph subsystems include the pseudo-slit, the shutter, the collimator with a focusing mechanism, pupil elements on a volu...

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Autores: Castillo Domínguez, E., Ferrusca Rodríguez, D., Tulloch, S., Velázquez, M., Carrasco, E., Gallego Maestro, Jesús, Gil De Paz, Armando, Sánchez, F. M., Vílchez, J. M.
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/44865
Acceso en línea:https://hdl.handle.net/20.500.14352/44865
Access Level:acceso abierto
Palabra clave:52
MEGARA
Cryostat
CCD231
Astrofísica
Astronomía (Física)
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spelling Cryostat and CCD for MEGARA at GTCCastillo Domínguez, E.Ferrusca Rodríguez, D.Tulloch, S.Velázquez, M.Carrasco, E.Gallego Maestro, JesúsGil De Paz, ArmandoSánchez, F. M.Vílchez, J. M.52MEGARACryostatCCD231AstrofísicaAstronomía (Física)MEGARA (Multi-Espectrografo en GTC de Alta Resolucion para Astronomia) is the new integral field unit (IFU) and multi-object spectrograph (MOS) instrument for the GTC. The spectrograph subsystems include the pseudo-slit, the shutter, the collimator with a focusing mechanism, pupil elements on a volume phase holographic grating (VPH) wheel and the camera joined to the cryostat through the last lens, with a CCD detector inside. In this paper we describe the full preliminary design of the cryostat which will harbor the CCD detector for the spectrograph. The selected cryogenic device is an LN2 open-cycle cryostat which has been designed by the "Astronomical Instrumentation Lab for Millimeter Wavelengths" at INAOE. A complete description of the cryostat main body and CCD head is presented as well as all the vacuum and temperature sub-systems to operate it. The CCD is surrounded by a radiation shield to improve its performance and is placed in a custom made mechanical mounting which will allow physical adjustments for alignment with the spectrograph camera. The 4k x 4k pixel CCD231 is our selection for the cryogenically cooled detector of MEGARA. The characteristics of this CCD, the internal cryostat cabling and CCD controller hardware are discussed. Finally, static structural finite element modeling and thermal analysis results are shown to validate the cryostat model.SPIE-Int Soc Optical EngineeringUniversidad Complutense de Madrid20122012-01-0120122012-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44865reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/448652026-06-02T12:44:21Z
dc.title.none.fl_str_mv Cryostat and CCD for MEGARA at GTC
title Cryostat and CCD for MEGARA at GTC
spellingShingle Cryostat and CCD for MEGARA at GTC
Castillo Domínguez, E.
52
MEGARA
Cryostat
CCD231
Astrofísica
Astronomía (Física)
title_short Cryostat and CCD for MEGARA at GTC
title_full Cryostat and CCD for MEGARA at GTC
title_fullStr Cryostat and CCD for MEGARA at GTC
title_full_unstemmed Cryostat and CCD for MEGARA at GTC
title_sort Cryostat and CCD for MEGARA at GTC
dc.creator.none.fl_str_mv Castillo Domínguez, E.
Ferrusca Rodríguez, D.
Tulloch, S.
Velázquez, M.
Carrasco, E.
Gallego Maestro, Jesús
Gil De Paz, Armando
Sánchez, F. M.
Vílchez, J. M.
author Castillo Domínguez, E.
author_facet Castillo Domínguez, E.
Ferrusca Rodríguez, D.
Tulloch, S.
Velázquez, M.
Carrasco, E.
Gallego Maestro, Jesús
Gil De Paz, Armando
Sánchez, F. M.
Vílchez, J. M.
author_role author
author2 Ferrusca Rodríguez, D.
Tulloch, S.
Velázquez, M.
Carrasco, E.
Gallego Maestro, Jesús
Gil De Paz, Armando
Sánchez, F. M.
Vílchez, J. M.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
MEGARA
Cryostat
CCD231
Astrofísica
Astronomía (Física)
topic 52
MEGARA
Cryostat
CCD231
Astrofísica
Astronomía (Física)
description MEGARA (Multi-Espectrografo en GTC de Alta Resolucion para Astronomia) is the new integral field unit (IFU) and multi-object spectrograph (MOS) instrument for the GTC. The spectrograph subsystems include the pseudo-slit, the shutter, the collimator with a focusing mechanism, pupil elements on a volume phase holographic grating (VPH) wheel and the camera joined to the cryostat through the last lens, with a CCD detector inside. In this paper we describe the full preliminary design of the cryostat which will harbor the CCD detector for the spectrograph. The selected cryogenic device is an LN2 open-cycle cryostat which has been designed by the "Astronomical Instrumentation Lab for Millimeter Wavelengths" at INAOE. A complete description of the cryostat main body and CCD head is presented as well as all the vacuum and temperature sub-systems to operate it. The CCD is surrounded by a radiation shield to improve its performance and is placed in a custom made mechanical mounting which will allow physical adjustments for alignment with the spectrograph camera. The 4k x 4k pixel CCD231 is our selection for the cryogenically cooled detector of MEGARA. The characteristics of this CCD, the internal cryostat cabling and CCD controller hardware are discussed. Finally, static structural finite element modeling and thermal analysis results are shown to validate the cryostat model.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01
2012
2012-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/44865
url https://hdl.handle.net/20.500.14352/44865
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv SPIE-Int Soc Optical Engineering
publisher.none.fl_str_mv SPIE-Int Soc Optical Engineering
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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