THERMAL MODELING OF THE WIDE-FIELD INFRARED CAMERA FOR THE CFHT
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19–24 June 2005 19–24 June 2005 Scientific detector workshop 2005 Scientific detector workshop 2005 1 THERMAL MODELING OF THE THERMAL MODELING OF THE WIDE-FIELD INFRARED CAMERA WIDE-FIELD INFRARED CAMERA FOR THE CFHT FOR THE CFHT Philippe Feautrier a , Eric Stadler a , and Pascal Puget b a Laboratoire d'AstrOphysique de Grenoble, 414 rue de la Piscine, 38041 Grenoble, France b LESIA, 5, place Jules Janssen 92195 MEUDON Cedex, France [email protected]
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THERMAL MODELING OF THE WIDE-FIELD INFRARED CAMERA FOR THE CFHT. Philippe Feautrier a , Eric Stadler a , and Pascal Puget b a Laboratoire d'AstrOphysique de Grenoble, 414 rue de la Piscine, 38041 Grenoble, France b LESIA, 5, place Jules Janssen 92195 MEUDON Cedex, France - PowerPoint PPT Presentation
Transcript of THERMAL MODELING OF THE WIDE-FIELD INFRARED CAMERA FOR THE CFHT
19–24 June 200519–24 June 2005 Scientific detector workshop 2005Scientific detector workshop 2005 11
THERMAL MODELING OF THE THERMAL MODELING OF THE WIDE-FIELD INFRARED WIDE-FIELD INFRARED CAMERA FOR THE CFHTCAMERA FOR THE CFHT
Philippe Feautrier a, Eric Stadler a, and Pascal Puget b
a Laboratoire d'AstrOphysique de Grenoble, 414 rue de la Piscine, 38041 Grenoble, Franceb LESIA, 5, place Jules Janssen 92195 MEUDON Cedex, France
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What is WIRCam ?What is WIRCam ?
WIRCam is the next wide field IR camera for the CFH.4 Hawaii 2RG IR detectors, 100 kg to be cooled using a CT1050 cryohead.A complete thermal model of the instrument (permanent and transient analysis) was used to assist the cryogenic design. The thermal model was done using the I-deas/TMG thermal module with FEA.The poster highlights the advantages of such a method for cryogenic cameras design and integration.
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Thermal modeling: transient analysis of the Thermal modeling: transient analysis of the WIRCam cold finger cooling down.WIRCam cold finger cooling down.
One imageevery 2 hrs
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Conclusions about thermal modelingConclusions about thermal modeling
The use of The use of integrated software toolsintegrated software tools like I-deas like I-deas helps to the mechanical and thermal design of helps to the mechanical and thermal design of cryogenic instruments. No cryogenic instruments. No translationstranslations..
Iterations model/measurements during system Iterations model/measurements during system integration. Thermal model easy to modify and to integration. Thermal model easy to modify and to adapt to un-complete systems, in order to fit the adapt to un-complete systems, in order to fit the simulations with partial temperature simulations with partial temperature measurements and to predict with more accuracy measurements and to predict with more accuracy the system behavior on the telescope. the system behavior on the telescope.
Results from thermal simulations with Ideas/TMG Results from thermal simulations with Ideas/TMG in good agreement with measurementsin good agreement with measurements
Thermal design avoided surprises during the Thermal design avoided surprises during the instrument integration .instrument integration .
WIRCam first light with the science grade WIRCam first light with the science grade detectors: June/July 2005. detectors: June/July 2005.
