DBSP-R UpgradeProgress Review

2011-01-06

The DBSP-R Team

2011-01-06

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DBSP-R Progress Review

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).

2011-01-06DBSP-R Progress Review

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Optics

2011-01-06DBSP-R Progress Review

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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.

2011-01-06DBSP-R Progress Review

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Mechanical

2011-01-06DBSP-R Progress Review

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Mechanical – Dewar Body

• Dewar ordered form IR Labs.– Vendor compliance checked.

• Expected: first week of February.

2011-01-06DBSP-R Progress Review

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Mechanical – Dewar Base (Khanh)

• Basic design: DONE.

• Detail drawings in progress.

2011-01-06DBSP-R Progress Review

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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

Mechanical – Detector Mount2011-01-06DBSP-R Progress Review

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Detector support areas

Flexure mount mount pocket

Detector mount plate

Spring leaf

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.

Mechanical – Detector Electronics Box

• Modifications for patch panel: DONE.

• Mounting assembly: Released for fab.

2011-01-06DBSP-R Progress Review

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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.

2011-01-06DBSP-R Progress Review

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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.

2011-01-06DBSP-R Progress Review

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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