CAGIRE – Preliminary mechanical design –0806 2010 · CAGIRE – Preliminary mechanical design...
Transcript of CAGIRE – Preliminary mechanical design –0806 2010 · CAGIRE – Preliminary mechanical design...
CAGIRE – Preliminary mechanical design – 08‐06‐2010
RequirementsRequirementsCooling system with cryocooler machine
T° @ detector : 130/140°K (TBC) during 6 monthsVacuum : pumping station & getter (ion pump)
P<1E 3 mbar during 6 months (no active pumping)P<1E‐3 mbar during 6 months (no active pumping)
Mechanical:Total mechanical parts : 15kg ± 5kg TBCCryocooler machine : 10kgCryocooler machine : 10kg
TOTAL MASS : 25kg TBC
Dynamic :The center of detector focal plane and the cryostat’s inertia axes are aligned with the center of gravity of cryostat
alignment with telescope focal planedynamic behavior
Cryostattop housing
Thermal housing
Detector and cryoboard asssembly
Data, heater and HK Interface
Cryostatbottom chamber
CryocoolerRicor K535
Cryostat window
Vacuum elementsc onnections
Exploded view of cryostat
Cut view of CAGIRE CRYOSTAT
Insulating feet baseplate
Thermal housing
OFHC cold head interface
Cryocooler col head
Detector and cryoboard assembly (with housings)
Detector housings
Cryoboardhousings
Detector OFHC thermal strap
Cryoboard OFHC thermal strap
Epoxy insulatingcryoboard feet
Epoxy insulatingdetector feet
F1 FLEX
Detector and cryoboard assembly
Detector baseplate (molydenum)
(1.6’’ length)
Cryoboard thermal strapconnected on cryoboard
F2 Flex(15’’ length)
Cryoboardbaseplate
detector thermal strapdetector thermal strapconnected on detector baseplate
Two separated mountings:One isolated mounting for detectorOne isolated mounting for cryoboard assemblyNo contact between the two mountings excepted Flex F1
Two separated thermal regulation
CAGIRE – Preliminary mechanical design – 08‐06‐2010
Not shown / to be done:
•Cables for HK heaters warm up•Cables for HK , heaters, warm‐up•Heater & warm up•Interface board for hermetic flange connection (Hirose connector to XAVAC 104 High density)•Hermetic flange (drawing delivered by subcontractor)•External electronic board interface, mounting & connections•Vacuum system elements connections and identification•F2 flex cable retainer (for thermal insulation)•Screws sealing joints•Screws, sealing, joints,…•Others.