Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnostic
The ITER Visible/Infrared Wide Angle Viewing System (WAVS) is an optical diagnostic aimed at monitoring the first wall for machine protection purposes. The Optical Hinge (OH) and Optical Relay Unit (ORU) are the first two components in the interspace area and both share a common support structure. T...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Nuclear Materials and Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122000217 |
| _version_ | 1831767366590005248 |
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| author | Santiago Cabrera Esther Rincón Mercedes Medrano Frédéric Le Guern Eduardo Rodriguez |
| author_facet | Santiago Cabrera Esther Rincón Mercedes Medrano Frédéric Le Guern Eduardo Rodriguez |
| author_sort | Santiago Cabrera |
| collection | DOAJ |
| description | The ITER Visible/Infrared Wide Angle Viewing System (WAVS) is an optical diagnostic aimed at monitoring the first wall for machine protection purposes. The Optical Hinge (OH) and Optical Relay Unit (ORU) are the first two components in the interspace area and both share a common support structure. The WAVS will be composed by 15 different lines of sight (LoS) distributed around ITER vacuum vessel in Equatorial Ports (EP) 3, 9, 12 and 17. EP12 is currently at its preliminary design and has to be operational for the first plasma. Its development is being carried out by the Consortium constituted by CEA, CIEMAT and Bertin Technologies, within the Framework Partnership Agreement financed by F4E.The OH mission is to compensate the vertical displacement of the vacuum vessel during operation with respect to the building. Therefore each OH LoS consists of a pair of flat mirrors arranged vertically. The upper one is driven vertically while the other remains fixed. Both mirrors are provided with alignment capabilities to assure their correct installation. The three OH LoS are placed in the OH-ORU common support structure, which is in turn directly attached to the Interspace Support Structure.In order to assure the optical performance, the OH-ORU common support structure has to withstand thermal and inertial loads during normal operation and SL-1 seism with low deviation (0.3 mm) and tilt (0.5arcmin). In case of Category III and IV (higher seismic or accidental loads) its integrity has to be maintained as it is classified as an ITER Safety Relevant component.This work comprises the structural analyses performed by CIEMAT of the OH mechanical set to evaluate its optical performance and the ones of the OH-ORU common structure in EP12 to check its integrity in accordance with the RCC-MR Code. |
| first_indexed | 2024-12-22T06:41:02Z |
| format | Article |
| id | doaj.art-18da30f384474e6e9d3624e8565884d6 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-22T06:41:02Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-18da30f384474e6e9d3624e8565884d62022-12-21T18:35:26ZengElsevierNuclear Materials and Energy2352-17912022-03-0130101134Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnosticSantiago Cabrera0Esther Rincón1Mercedes Medrano2Frédéric Le Guern3Eduardo Rodriguez4CIEMAT, Laboratorio Nacional de Fusión, Avda. Complutense 40, 28040 Madrid, Spain; Corresponding author.CIEMAT, Laboratorio Nacional de Fusión, Avda. Complutense 40, 28040 Madrid, SpainCIEMAT, Laboratorio Nacional de Fusión, Avda. Complutense 40, 28040 Madrid, SpainF4E, Josep Pla 2, Torres Diagonal Litoral B3, 08019 Barcelona, SpainDepartment of Construction and Manufacturing Engineering, University of Oviedo, Campus de Viesques, 33203 Gijón, SpainThe ITER Visible/Infrared Wide Angle Viewing System (WAVS) is an optical diagnostic aimed at monitoring the first wall for machine protection purposes. The Optical Hinge (OH) and Optical Relay Unit (ORU) are the first two components in the interspace area and both share a common support structure. The WAVS will be composed by 15 different lines of sight (LoS) distributed around ITER vacuum vessel in Equatorial Ports (EP) 3, 9, 12 and 17. EP12 is currently at its preliminary design and has to be operational for the first plasma. Its development is being carried out by the Consortium constituted by CEA, CIEMAT and Bertin Technologies, within the Framework Partnership Agreement financed by F4E.The OH mission is to compensate the vertical displacement of the vacuum vessel during operation with respect to the building. Therefore each OH LoS consists of a pair of flat mirrors arranged vertically. The upper one is driven vertically while the other remains fixed. Both mirrors are provided with alignment capabilities to assure their correct installation. The three OH LoS are placed in the OH-ORU common support structure, which is in turn directly attached to the Interspace Support Structure.In order to assure the optical performance, the OH-ORU common support structure has to withstand thermal and inertial loads during normal operation and SL-1 seism with low deviation (0.3 mm) and tilt (0.5arcmin). In case of Category III and IV (higher seismic or accidental loads) its integrity has to be maintained as it is classified as an ITER Safety Relevant component.This work comprises the structural analyses performed by CIEMAT of the OH mechanical set to evaluate its optical performance and the ones of the OH-ORU common structure in EP12 to check its integrity in accordance with the RCC-MR Code.http://www.sciencedirect.com/science/article/pii/S2352179122000217ITER diagnosticWAVSOptical HingeStructural analysisFEM |
| spellingShingle | Santiago Cabrera Esther Rincón Mercedes Medrano Frédéric Le Guern Eduardo Rodriguez Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnostic Nuclear Materials and Energy ITER diagnostic WAVS Optical Hinge Structural analysis FEM |
| title | Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnostic |
| title_full | Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnostic |
| title_fullStr | Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnostic |
| title_full_unstemmed | Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnostic |
| title_short | Structural analysis of the optical hinge preliminary design for the ITER wide angle viewing system diagnostic |
| title_sort | structural analysis of the optical hinge preliminary design for the iter wide angle viewing system diagnostic |
| topic | ITER diagnostic WAVS Optical Hinge Structural analysis FEM |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122000217 |
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