Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions

The Wide Angle Viewing System (WAVS) for ITER is a major diagnostic for machine protection, plasma control and physics analysis. The diagnostic will measure the surface temperature of the plasma facing components by infrared thermography being one of its main roles to protect them from damage. It wi...

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Autores: Carrasco, Ricardo, Lapayese, Fernando, Peña, Ángel de la, Medrano, Mercedes, Mota, F., Soleto, Alfonso, Pereira González, Augusto|||0000-0001-7945-6569, Pastor, Carmen, Rodríguez, C., Rincón, Esther, Cabrera, Santiago, Fernández, A., Ramos, Francisco Javier, Queral, Vicente, Letellier, Laurent, Le Guern, Frederic, Piqueras, Juan José
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad de Alcalá (UAH)
Repositorio:e_Buah Biblioteca Digital Universidad de Alcalá
Idioma:inglés
OAI Identifier:oai:ebuah.uah.es:10017/63930
Acceso en línea:http://hdl.handle.net/10017/63930
https://dx.doi.org/10.1016/j.fusengdes.2023.113680
Access Level:acceso abierto
Palabra clave:ITER
WAVS
Diagnostics
Piezo actuator
Protección radiológica
Radiological protection
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spelling Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditionsCarrasco, RicardoLapayese, FernandoPeña, Ángel de laMedrano, MercedesMota, F.Soleto, AlfonsoPereira González, Augusto|||0000-0001-7945-6569Pastor, CarmenRodríguez, C.Rincón, EstherCabrera, SantiagoFernández, A.Ramos, Francisco JavierQueral, VicenteLetellier, LaurentLe Guern, FredericPiqueras, Juan JoséITERWAVSDiagnosticsPiezo actuatorProtección radiológicaRadiological protectionThe Wide Angle Viewing System (WAVS) for ITER is a major diagnostic for machine protection, plasma control and physics analysis. The diagnostic will measure the surface temperature of the plasma facing components by infrared thermography being one of its main roles to protect them from damage. It will also image the plasma emission in the visible range. The full system is composed of 15 lines of sights located in four equatorial ports (3, 9, 12 and 17).As part of the ex-vessel optics, the first element of the optical chain is the Optical Hinge (OH). It is constituted by two folding mirrors which face the port plug exit optical beam. The mission of this component is to compensate the differential motion between the vacuum vessel and the building, during normal operation and baking. This function will be performed by means of a piezo actuator coupled to the OH upper mirror (and a set of reference switches) to drive the vertical displacement of the mirror in order to get the desired alignment position of the optical beam. The piezo actuator has been identified as the main critical item of the OH what has motivated the fabrication of an OH prototype (for one line of sight) aimed at performing a set of tests to validate the piezo actuator under operation conditions. The tests have consisted in the characterization of the piezo actuator behavior with the nominal load after being irradiated to 272.40 kGy of total accumulated gamma dose, which is the dose expected in ITER. Moreover, additional tests have been conducted to find out the influence of the cable length from the piezo actuator to the controller in the performance. A description of these tests and the results obtained will be presented in the paper.The work leading to this publication has been partially funded by Fusion for Energy under Specific Grant Agreement F4E-FPA 407(DG)-SG0420232023-03-27journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/63930https://dx.doi.org/10.1016/j.fusengdes.2023.113680reponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/639302026-06-18T11:13:07Z
dc.title.none.fl_str_mv Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
title Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
spellingShingle Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
Carrasco, Ricardo
ITER
WAVS
Diagnostics
Piezo actuator
Protección radiológica
Radiological protection
title_short Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
title_full Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
title_fullStr Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
title_full_unstemmed Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
title_sort Tests on the prototype of the Optical Hinge for the Wide Angle Viewing System to ITER gamma radiation conditions
dc.creator.none.fl_str_mv Carrasco, Ricardo
Lapayese, Fernando
Peña, Ángel de la
Medrano, Mercedes
Mota, F.
Soleto, Alfonso
Pereira González, Augusto|||0000-0001-7945-6569
Pastor, Carmen
Rodríguez, C.
Rincón, Esther
Cabrera, Santiago
Fernández, A.
Ramos, Francisco Javier
Queral, Vicente
Letellier, Laurent
Le Guern, Frederic
Piqueras, Juan José
author Carrasco, Ricardo
author_facet Carrasco, Ricardo
Lapayese, Fernando
Peña, Ángel de la
Medrano, Mercedes
Mota, F.
Soleto, Alfonso
Pereira González, Augusto|||0000-0001-7945-6569
Pastor, Carmen
Rodríguez, C.
Rincón, Esther
Cabrera, Santiago
Fernández, A.
Ramos, Francisco Javier
Queral, Vicente
Letellier, Laurent
Le Guern, Frederic
Piqueras, Juan José
author_role author
author2 Lapayese, Fernando
Peña, Ángel de la
Medrano, Mercedes
Mota, F.
Soleto, Alfonso
Pereira González, Augusto|||0000-0001-7945-6569
Pastor, Carmen
Rodríguez, C.
Rincón, Esther
Cabrera, Santiago
Fernández, A.
Ramos, Francisco Javier
Queral, Vicente
Letellier, Laurent
Le Guern, Frederic
Piqueras, Juan José
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ITER
WAVS
Diagnostics
Piezo actuator
Protección radiológica
Radiological protection
topic ITER
WAVS
Diagnostics
Piezo actuator
Protección radiológica
Radiological protection
description The Wide Angle Viewing System (WAVS) for ITER is a major diagnostic for machine protection, plasma control and physics analysis. The diagnostic will measure the surface temperature of the plasma facing components by infrared thermography being one of its main roles to protect them from damage. It will also image the plasma emission in the visible range. The full system is composed of 15 lines of sights located in four equatorial ports (3, 9, 12 and 17).As part of the ex-vessel optics, the first element of the optical chain is the Optical Hinge (OH). It is constituted by two folding mirrors which face the port plug exit optical beam. The mission of this component is to compensate the differential motion between the vacuum vessel and the building, during normal operation and baking. This function will be performed by means of a piezo actuator coupled to the OH upper mirror (and a set of reference switches) to drive the vertical displacement of the mirror in order to get the desired alignment position of the optical beam. The piezo actuator has been identified as the main critical item of the OH what has motivated the fabrication of an OH prototype (for one line of sight) aimed at performing a set of tests to validate the piezo actuator under operation conditions. The tests have consisted in the characterization of the piezo actuator behavior with the nominal load after being irradiated to 272.40 kGy of total accumulated gamma dose, which is the dose expected in ITER. Moreover, additional tests have been conducted to find out the influence of the cable length from the piezo actuator to the controller in the performance. A description of these tests and the results obtained will be presented in the paper.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-03-27
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10017/63930
https://dx.doi.org/10.1016/j.fusengdes.2023.113680
url http://hdl.handle.net/10017/63930
https://dx.doi.org/10.1016/j.fusengdes.2023.113680
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:e_Buah Biblioteca Digital Universidad de Alcalá
instname:Universidad de Alcalá (UAH)
instname_str Universidad de Alcalá (UAH)
reponame_str e_Buah Biblioteca Digital Universidad de Alcalá
collection e_Buah Biblioteca Digital Universidad de Alcalá
repository.name.fl_str_mv
repository.mail.fl_str_mv
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