1. 4x8 Mosaic Camera Development
Developed a flight-like prototype of a large mosaic NIR and visible focal plane instrument suitable for use in any (including the most ambitious) of the dark energy mission variants.
Demonstrate interoperability of multiple NIR and CCDs. Look for crosstalk – understand grounding and cabling. Achieving nominal read noise performance with no measurable crosstalk.

2. Up the ramp (UTR) measurements of NIR 1.95 µm cutoff detector (#16071)
Test Results
Noise
CCDs < 4 e-; NIR (1.7µm cutoff) < 7e- Fowler 16
NIR (1.95µm cutoff) 400 second UTR total noise < 0.03e-/sec
Interoperability/Crosstalk
No interference or crosstalk measured
QE (CCD > 90% peak; NIR > 85% peak)
Flatness
At room temperature (detectors < ±5 µm, cold plate < ±1 µm)
At operating temperature (still being analyzed, but looks good)
Up the ramp (UTR) measurements of NIR 1.95 µm cutoff detector (#16071)
Total Noise Vs. Integration Time
400 second dark current image
0.036 e-/sec, 8.1 e- total noise

3. 4x8 Focal Plane in Testing
8 NIR & 8 CCD detectors installed
(detector side)
8 NIR & 8 CCD detectors installed
(electronics side)
Thermal/Functional testing
Vibration test

4. CCD and NIR Detectors and Electronics
32-channel NIR detector readout module with TIS SIDECAR® ASIC developed at SLAC
HgCdTe NIR detector hybridized and mounted on LBNL/UofM developed, 4 side abuttable SiC pedestal.
CRIC-CLIC ASIC CCD electronics module developed at LBNL.
CCD detector mounted on LBNL/Yale developed, 4 side abuttable SiC pedestal.

5. CCD Packaging Fixture Chuck temperature controller
Macro lens camera on glue dispensing side
Macro lens camera away from glue dispensing side
Substrate chuck
Epoxy dispensing syringe stage
Epoxy-dispensing unit
CCD chuck
4x Fiber optic lights
Telecentric lens cameras for setting gaps, both sides

6. CCD Bonding Top of Substrate Bevel on substrate CCD CCD chuck
Dispensing between wirebond pads (syringe tip outside diameter is 0.52mm)
Substrate
Glue (70um gap)
CCD
Telecentric view of non-wirebond edge when epoxy first appears there

7. Detector Flatness Testing
2x Keyence distance-measurement devices (obscured)
3x mm thick ceramic gauge blocks
Reference flat
CCD on 2mm spacers
Polymeric pad (since replaced with electrically grounded pad)
Y-stage
X-stage
Granite block

8. Detector Flatness CCD S/N 054 NIR S/N 010 2.2 µm P-P, 0.3 µm RMS

9. CCD #34 Measurements in 4x4 array
Bias Image
Gain measured using photon transfer
Gain is 0.65 e-/ADU
Read noise it 3.65 e-
Illuminated Image

10. NIR 16071 Measurements in 4x4 array
Gain Image
1.95 µm cutoff
Gain measured using photon transfer
50 time series fowler-1 images
Gain is 2.6 e-/ADU
Fowler-1 noise is 18.3 e-
Fowler-1 Noise Image

11. Full 4x8 Flatness Measurement (135 K)
Preliminary results show SiC coldplate well within specification