A procedure for generating quantitative 3-D camera views of tokamak divertors

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Description

A procedure is described for precision modeling of the views for imaging diagnostics monitoring tokamak internal components, particularly high heat flux divertor components. These models are required to enable predictions of resolution and viewing angle for the available viewing locations. Because of the oblique views expected for slot divertors, fully 3-D perspective imaging is required. A suite of matched 3-D CAD, graphics and animation applications are used to provide a fast and flexible technique for reproducing these views. An analytic calculation of the resolution and viewing incidence angle is developed to validate the results of the modeling procedures. The calculation ... continued below

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23 p.

Creation Information

Edmonds, P.H. & Medley, S.S. May 1, 1996.

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  • Edmonds, P.H. Univ. of Texas, Austin, TX (United States). Fusion Research Center
  • Medley, S.S. Princeton Univ., NJ (United States). Plasma Physics Lab.

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Description

A procedure is described for precision modeling of the views for imaging diagnostics monitoring tokamak internal components, particularly high heat flux divertor components. These models are required to enable predictions of resolution and viewing angle for the available viewing locations. Because of the oblique views expected for slot divertors, fully 3-D perspective imaging is required. A suite of matched 3-D CAD, graphics and animation applications are used to provide a fast and flexible technique for reproducing these views. An analytic calculation of the resolution and viewing incidence angle is developed to validate the results of the modeling procedures. The calculation is applicable to any viewed surface describable with a coordinate array. The Tokamak Physics Experiment (TPX) diagnostics for infrared viewing are used as an example to demonstrate the implementation of the tools. For the TPX experiment the available locations are severely constrained by access limitations at the end resulting images are marginal in both resolution and viewing incidence angle. Full coverage of the divertor is possible if an array of cameras is installed at 45 degree toroidal intervals. Two poloidal locations are required in order to view both the upper and lower divertors. The procedures described here provide a complete design tool for in-vessel viewing, both for camera location and for identification of viewed surfaces. Additionally these same tools can be used for the interpretation of the actual images obtained by the actual diagnostic.

Physical Description

23 p.

Notes

INIS; OSTI as DE96010515

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  • Other Information: PBD: May 1996

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  • Other: DE96010515
  • Report No.: PPPL--3187
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/238597 | External Link
  • Office of Scientific & Technical Information Report Number: 238597
  • Archival Resource Key: ark:/67531/metadc664064

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • May 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • April 15, 2016, 7:09 p.m.

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Edmonds, P.H. & Medley, S.S. A procedure for generating quantitative 3-D camera views of tokamak divertors, report, May 1, 1996; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc664064/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.