DBSP-R Upgrade Progress Review 2011-01-06 The DBSP-R Team 2011-01-06 1 DBSP-R Progress Review.
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Transcript of DBSP-R Upgrade Progress Review 2011-01-06 The DBSP-R Team 2011-01-06 1 DBSP-R Progress Review.
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DBSP-R UpgradeProgress Review
2011-01-06
The DBSP-R Team
2011-01-06
1
DBSP-R Progress Review
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Motivation for the Upgrade
• Much greater QE at reddest wavelengths.
• Spectral length doubled.
• Improved ease of use.
Additional benefits:
• Lower noise (<2.5e- @20s read time)
• 15µm pixels instead of 24µm; low lateral charge diffusion.
• No fringing.
• Standardization of electronics and software.
• Improved LN2 hold time (30+ hours).
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Optics
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Optics (Viswa)
• Window lens specs as per Epps’ design (originally for flat CCD, like ours).
• Status:– Flat window (for testing) in hand.– Lens window shipped from HJOL to coating company.
Expected next week.
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Mechanical
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Mechanical – Dewar Body
• Dewar ordered form IR Labs.– Vendor compliance checked.
• Expected: first week of February.
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Mechanical – Dewar Base (Khanh)
• Basic design: DONE.
• Detail drawings in progress.
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Mechanical – Flexure FEA2011-01-06DBSP-R Progress Review
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SpacerG-10 CR,.020” thk sheet
Aluminum rings
Cable feedthrought holes
Mass mounting surface :- Detector mask : .4 lb- Cold shield : .3 lb-Detector standoff assy : .6 lb (including detector package)
Total deflection of 0.6µm with the mass of 1.3 lbs
Total deflection of 5.5µm with the mass of 13 lbs
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Mechanical – Detector Mount2011-01-06DBSP-R Progress Review
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Detector support areas
Flexure mount mount pocket
Detector mount plate
Spring leaf
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Mechanical – Head Installation Proc10
Sliding the detector standoff assy over the two guiding shafts forinstallation from the back of dewar base.
Sliding the detector maskover the two guiding shafts forinstallation from the front of dewar base.
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Mechanical – Detector Electronics Box
• Modifications for patch panel: DONE.
• Mounting assembly: Released for fab.
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Electronics
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Electronics - External
• Detector Controller + Boards in the lab: in testing.
• Patch Panel Board: in fabrication.
• Heater PCB: template from Antarctic camera.
• Controller Box wiring:
• Boards to Patch Panel.
• Hermetic connectors to Patch Panel.
• Cables:
• Dewar to Cass Cage Rack.
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Electronics - Internal
• Fanout PCB: to be designed.
• Internal wiring:
• Fanout Board to hermetic connectors.
• Detector mount temperature control.
• Dewar body temperature control.
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Computer and Software
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Computer and Software (Jennifer)2011-01-06
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DBSP-R Progress Review
DBSP REDArcVIEW Server
TCP/IP sockets
DBSP REDGUI interface
DBSP BLUEGUI interface
TCP/IP sockets
TCP/IP sockets
DBSP BLUEArcVIEW Server
Sync ModuleSync
Module
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