Brenna Flaugher July 20, 2007

1

DECam Project Summary

• Outline– WBS 1.1 Management – WBS 1.2 Focal Plan Detectors– WBS 1.3 Front End Electronics– WBS 1.4 Optics– WBS 1.5 Opto-mechanical– WBS 1.6 SISPI– WBS 1.7 Survey Planning– WBS 1.8 Integration with CTIO

Brenna Flaugher July 20, 2007

2

News: WBS 1.1 Management

• Labor – Electrical: Steve Chappa, is starting to collect information on all cables

and electronic signals in the CCD vessel and in the cage

– Mechanical: • 50% of an ME has been added to the effort from July to ~ Jan. to help get

us ready for CD-2 this fall – He is working on the telescope simulator• Kurt submitted a req. for a new engineer to Mike Crisler. Idea is that the

person would work ~ 50% on the camera vessel design and start in ~ Dec.

– Opening for an engineering physicist to help with the CCD testing and analysis was posted yesterday. Hope to have position filled by mid. September

• M&S– Last large generic R&D requisitions for FY07 have been submitted

• CCD req signed by PPD (120k)• Optical parts for precise QE measurements is winding through the system

(27k) – currently waiting for Dale

Brenna Flaugher July 20, 2007

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DECam Project Management Roles (will update the PPMP)

• Project Integration Team: chaired by the DECam Project Manager and composed of the individuals charged with insuring the successful integration of all the components of DECam. – Mechanical Project Engineer: Andy Stefanik– Electrical Project Engineer: Terri Shaw– Software Integration: Jon Thaler– Integrated Safety Management: Wyatt Merritt + ES&H– CTIO integration: Tim Abbott– DECam Project Scientist: Darren DePoy

Brenna Flaugher July 20, 2007

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Review plans and news

• Current plans:– CD2/3a Directors review in Nov. 2007– Joint NSF/DOE CD2/3a review in Jan. 08– Approval expected by March 1 2008. – Joint NSF/DOE CD3b review May 2008. This would focus on the rest of the

DECam project and integration with DM and CFIP– Full CD3 approval by July 2008

• Strawman CD3A List for DECam (=tasks that are ready and need to make procurements of final parts before ~ July 2008):

– WBS 1.2 CCD wafer processing (not packaging)

• New Guidance on the TPC: We need to include the cost of preparing the Conceptual Design Report in the total project cost

– Only technical labor counts (Andy, Terri, Greg, etc)– Only time spent on the actual document counts– Will base this on a best estimate from the engineers– So far it looks like about 60 hours of engineering time was spent reading and

editing, this is about $7000. Not a big change in the TPC!

Brenna Flaugher July 20, 2007

5

Earned Value on generic R&D – project 40 codes

Plan to delete move all the Generic R&D tasks to a separate project file and start on Project funds (project number 470) on August 1st

• CD labor in WBS 1.7 to DECam PPD codes is understood. Discrepancy is due to inexact matching of CD and PPD codes.

•Overall we are coming out cheaper than scheduled and we are falling a bit behind•Main contribution to “cheaper” is the CCDs which are obligated long before they are costed: will change when switch to R&D codes.•Additional engineering in 1.5 and 1.3 will bring those closer to the scheduled progress and cost (we have been falling behind due to the lack of mechanical engineering on non critical path tasks in 1.5)

•L2 managers are updating the schedule one more time before we are ready to go to project funds.

DES June07 CPR CUMULATIVE TO DATE AT COMPLETION

ACTUAL

BUDGETED COST COST VARIANCE

WORK WORK WORK BUDGETED

SCHEDULED PERFORMED PERFORMED SCHEDULE COST

GEN Generic 1.1 Management 331,753 331,929 204,433 176 127,496 368,810 1.2 Focal Plane Detectors 1,367,599 1,321,061 671,272 -46,538 649,789 1,595,148 1.3 Front End Electronics 1,018,087 928,242 780,947 -89,845 147,295 1,087,973 1.4 Optics 24,830 24,830 0 0 24,830 24,830 1.5 Opto-Mechanical System 848,395 699,787 559,726 -148,608 140,061 958,197 1.6 Survey Image System Process Integration (SISPI) 0 0 0 0 0 0 1.7 Survey Planning 92,426 92,426 119,200 0 -26,774 92,426Funding Type-CTotals: 3,683,091 3,398,276 2,335,578 -284,815 1,062,698 4,127,386

Brenna Flaugher July 20, 2007

6

Labor Through June

• The final reality adjustments by July 23rd

• Dale will run the EV one more time as a final check of the past

• Will then re-smooth the obligations profile to match the funding profiles, the review schedule and the new guidance on MIE funds

• Also adding many milestones for the in-kind tasks

Actual Scheduled Actual Loaded Actual Scheduled Hours Hours Costs Costs Costs

1.1 40.38.10.01 PPD_BUD 462 546 15,325 37,615 50,093PPD_SCHED 520 667 22,533 55,307 71,794PPD_EE 456 727 22,953 56,338 77,247PPD_ME 930.4 727 40,677 99,843 80,280PPD_DESIGN 0 115 0 0 7,715PPD_AS 0 115 0 0 8,260

2,368 2,897 101,488 249,103 295,389

1.2, 1.6 40.38.20.01 PPD_ET_SR 1986.8 1,523 54,847 134,622 135,723PPD_MT 631.5 2,351 13,658 33,524 146,584PPD_SD 1360.6 1,453 46,653 114,509 120,940PPD_DESIGN 819.5 279 21,524 52,830 18,709PPD_ME 907.5 1,222 39,890 97,909 134,920PPD_MT_SR 1046.6 1,287 37,414 91,833 119,375PPD_EE 0 288 0 0 30,565TD_Mach 245.5 68 12,400 22,692 7,065

6,998 8,471 226,385 547,918 713,881

1.3 40.38.20.03 PPD_ET 903.4 392 25,363 62,253 25,498PPD_EE 5717.2 5,308 211,919 520,155 564,154PPD_ET_SR 760 2,405 24,973 61,296 214,269PPD_ME 84.68 40 3,922 9,626 4,418PPD_SD 1231 995 32,007 78,562 82,760PPD_DESIGN 10 255 626PPD_MT 1 40 20 50 2,494TD_Mach 27.5 10 1,116 2,042 590

8,735 9,190 299,575 734,611 894,183

1.4, 1.5 40.38.20.10 PPD_MT 90.5 148 2,270 5,571 9,202PPD_ME 1976.08 3,582 87,274 214,213 395,645PPD_DESIGN 2502.38 3,064 65,785 161,470 205,342PPD_MT_SR 326.48 855 14,954 36,704 79,366PPD_ET_SR 0PPD_EE 0TD_Mach 351 196 10,974 20,082 11,588

5,246 7,845 181,256 438,040 701,143

23,348 28,403 808,705 1,969,672 2,604,596

Brenna Flaugher July 20, 2007

7

WBS 1.2 Lot 2A Detectors

Tested 4 high quality 2k x 2k detectors from Lot 2A (3 shown here).

Unusable pixels due to cosmetic defects < 0.06% in all cases.

Specification is <2% for this category

Brenna Flaugher July 20, 2007

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Pin-hole camera with the MCCDTV

• Herman Cease

• Galaxy Poster

Brenna Flaugher July 20, 2007

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WBS 1.2 Lot 2B Control Wafers

• We received the 3 Lot 2B control wafers from LBNL this week. • Of the twelve 2kx4k devices,

– 6 are near perfect

– 5 have vertical-clock sensitive hot columns (only one has many), the other 1 or 2

– 1 didn’t readout on one of two channels

• These results are similar to Lot 2A control wafers?

CCD 1 CCD 2 CCD 3 CCD 4

Example: 107419-1Re-polished wafersCold probe data

~ perfect (S.H.)

Brenna Flaugher July 20, 2007

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WBS 1.3 Cabling Tests

• Testing AlN Board with JFET– 3 CCD packages produced

• 2 did not work• 3rd had one working half; noise is less than when we locate JFET on a

small CCD Interface Board• We will build two more packages

• Testing parallel JFET drivers with and without preamp stage– 6.2 usec/pix without preamp (11Jul2007_4Ftrf_198.fits)

(LH)gain=0.97 ADU/e, noise=6.8 ADU -> 7e– 6.2 usec/pix with preamp (13Jul2007Ftrf_289.fits)

(LH)gain=2.4 ADU/e, noise=15.8 ADU ->6.5 e– 3.7 usec/pix without preamp

(LH)gain=0.47 ADU/e, noise=5.1 ADU -> 11 e– 3.7 usec/pix with preamp (13Jul2007_2Ftrf_395.fits)

(LH)gain=1.2 ADU/e, noise= 9 ADU ->7.5 e

Lowest noise results with a parallel JFET source follower and preamp!

Brenna Flaugher July 20, 2007

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noise < 10 (yellow)10 < noise < 15 (blue)15 < noise < 20 (green)20 < noise < 25 (red) noise>25 (black)

New clocking of the detectors allows us to achieve ~8 e of noise @ 3.7 usec/pixel (goal=10e @ 4usec/pixel). Similar performance obtained in 4-CCD mosaic camera.

4s5s

3s

5/2007

6/2007

Brenna Flaugher July 20, 2007

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WBS 1.3 MultiCCD Readout

• multiCCD was warmed up and all the cables were rebuilt to have internal preamp and microcoax everywhere..

@4.1 usec/pixCCD0-LH: g=1.32 ADU/e , noise=10 ADU 7.6e- CCD0-RH: g=1.6 ADU/e , noise=10 ADU 6.3e- CCD1-LH: detector with problems (no gain meas) CCD1-RH: detector with problems (no gain meas) CCD2-LH: g=1.44 ADU/e , noise=12 ADU 8.3 e- CCD2-RH: g=1.49 ADU/e , noise=11 ADU 7.4 e- CCD3-LH: detector with problems (no gain meas) CCD3-RH: g=1.40 ADU/e , noise=10 ADU 7.1 e-

Three preamps did not work after installation; we believe the preamps were damaged prior to installation. Good lesson on handling!

.

Brenna Flaugher July 20, 2007

13

WBS 1.4 Optics

• Ready to order glass blanks – currently waiting for university contracts to be signed

• Tender for lens polishing is nearly ready to go out– will be a 40 day response cycle

• Filter specifications will be complete by mid August– Will send around for the Collaboration to review – Plan to send out a request for quote in early Sept. (R&D proposal funds) – Contract will be for one prototype filter with an option to buy the rest of

them

• Revised Cell design meets the requirements (UCL FEM)• UCL has a large lens (~ 600mm diameter) that they will use to

prototype the lens cell design and alignment plans • Preparing solid model to get cost estimates for a stray light analysis

and baffle design

Brenna Flaugher July 20, 2007

14

WBS 1.5: Cryo-Cooler Capacity and vibration Test with MCCDTV

AL-300

ModifiedBack Cover

Cu Block

400 WattHeater

RTD

Brenna Flaugher July 20, 2007

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WBS 1.5: MCCDTV UPGRADES

1) Paint “Sombrero” light baffle black at UCEC. DONE

Event horizonFrom black holepaint

Brenna Flaugher July 20, 2007

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Opto-Mechanical System WBS 1.5

• First draft of WBS 1.5 TDR outline and barrel section are complete.• Checked combined deflections of C1 cell (UCL) and barrel cone

(Fermilab). We are marching towards one all inclusive FEM at Fermilab vs component FEMs at various institutions.

• Submitted Request for Budgetary Quotation for the camera vessel weldment.

• C5 cell has gone out twice for budgetary quotations; no responses yet. Will try again. It looks like outside shops are busy and are paying less attention to small budget quotes.

• Will have a layout of the telescope simulator and service platform on Friday to show SiDet mgt the space we need in Lab A.

• Purchasing will issue the formal hexapod RFI to at least 7 vendors on Friday. The plan is to sign a contract for step 1 in October (R&D proposal funds)

Brenna Flaugher July 20, 2007

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● We have updated the image simulation file format to conform to the image header data model (from Joe Mohr et al.), and provided a simulated image pointing to DES Data Management for validation

● This test pointing also includes fixes for the small astrometric and photometric bugs found by the DM group for the previous simulated images

● We are awaiting confirmation that the bugs are corrected before proceeding with Joe Mohr’s request for one night’s worth of “Gold Standard” simulations, which will then be processed by the DESDM pipelines, with QA results (against the input truth values)

shown for presentations, etc.

WBS 1.7 Simulations Update - 07/19/07