Brenna Flaugher July 6, 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

Brenna Flaugher July 6, 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


2

News

• Darren DePoy (OSU) has agreed to be the DECam project scientist• Doesn’t look like we are going to find a Project Engineer

– Instead we are supplementing with less experienced engineering to free up Andy and Terri for more global integration coordination

– Electrical: Terri added an engineer to her group who will start collecting all the information on all cables and electronic signals in the cage

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

us ready for CD-2 this fall.• Kurt and Andy are working on a requisition for a new engineer (would show

up by ~Dec.?) • TDR preparations are beginning

– Andy has written a section on the Barrel and we are reviewing it for format

– Will be used as an example for the other L2 managers to follow– Jean Slaughter is helping us pull the TDR plans together and to specify

the requirements documents for each sub-system.


3

DECam Project Management Roles (will update the PPMP)

• DECam Project Scientist (Astrophysicist):– Will help translate scientific and technical requirements into detailed specifications that we can

use for vendors– Will be responsible for the DECam Technical Requirements Document (once it is split from the

DES Science Requirements document next week)– Help with the decisions we need to make before CD-2 (and after!)

• Two Deputy Project Managers– Both help with many aspects of the project management– Fermilab DPM: Wyatt Merritt

• Leading preparation of the TDR, DECam MOUs, DOE Documents, ES&H• Signature and decision authority in absence of PM

– CTIO DPM: Tim Abbott• Primary point of contact with CTIO• Authors documents on Integration and Acceptance of DECAM at CTIO

• 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– Integrated Safety Management: Wyatt Merritt + ES&H– CTIO integration: Tim Abbott– DECam Project Scientist: Darren DePoy


4

DECam Project Structure


5

DES Organization


6

DOE Dark Energy R&D Proposal

In Jan. DOE requested proposals for Dark Energy R&D projects.

• In Feb. DECam submitted a request totaling $2.3M to support primarily the equipment funds for the DECam R&D, plus some funds for work (science and technical) at universities. Fermilab agreed to support the R&D labor costs.

• June 7th we learned that our proposal was awarded $0.9M out of $1.2M awarded for Stage 3 experiments ($3.0M total)

• This was the largest award that we know of• There will be another solicitation in FY08, maybe too late

for us to be considered R&D.


7

R&D Proposal: $0.9M in FY07 funds, arrives ~ end of August 07Cost ($k) Total Direct Sub Award (1.5%) M&S (15.5%) Total Indirect

Travel 55 50.0 0.0 50.0 5.0CCD Wafers 0 0.0 0.0 0.0 0.0CCD Packaging 110 95.0 0.0 95.0 14.7CCD testing 0 0.0 0.0 0.0 0.0Readout Electronics 183 158.4 0.0 158.4 24.6Camera and Cooling 116 100.0 0.0 100.0 15.5Readout Crates 38 37.0 37.0 0.0 0.6Barrel 133 115.0 0.0 115.0 17.8Filters 146 127.7 12.7 115.0 18.0SISPI 25 25.0 25.0 0.0 0.4Alignment and Focus 95 87.0 37.0 50.0 8.3Total 900.0 795.1 111.7 683.4 104.9

Sub-awards (k$)Univ. of Chicago 0.0Univ. of Ilinois at Urbana-Champaign37.0Univ. of Michigan 12.7Univ. of Pennsylvania 37.0The Ohio State University 25.0LBNL 0.0Total 111.7

UIUC and Mich. funds are for engineering on the DECam Project. UIUC needs a funds for a PD

OSU funds are for 25% of a PD to work on DECam - Probably should not count as DECam project funds

Penn funds are for evaluation of the relationship between delivered image quality and WL systematic errors – definitely not part of the DECam project cost


8

Remaining M&S R&D costs (direct)

• FY07 (not counting items in the R&D proposal list): $288k direct

• FY08: $824k• Total M&S remaining in R&D: $1112k• R&D proposal provides $684k• Still need $428k of M&S to complete the R&D program

not including contingency


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FY08 Details: DECam Project Request (July 5, 2007)

R&D Total = $3.1M – Contingency is not includedM&S: $824kLabor: PPD $1,264k, CD $156kIndirect: ~ $896k

MIE Total = $3.6MM&S: $2000k – This includes the MIE contingency of ~ $620kLabor: PPD $740k, CD $85kIndirect: ~ $750k

DECam Funding Need Profile From CD-1 Review (burdened and escalated to then yr $)

FY07-Q4 FY08 FY09 FY10 FY11 TotalR&D 0.99 2.97 1.20 0.00 0.00 5.17MIE-base 0.00 2.69 6.15 4.47 0.75 14.05MIE-Cont. 0 0.91 1.35 2.2 1.3 5.76MIE-Total 0.00 3.60 7.50 6.67 2.05 19.81Total (R&D+MIE) 0.99 6.57 8.70 6.67 2.05 24.98


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Earned Value on generic R&D – project 40 codes

DES June07 CPR CUMULATIVE TO DATE AT COMPLETIONACTUAL

BUDGETED COST COST VARIANCEWORK WORK WORK BUDGETED

SCHEDULED PERFORMED PERFORMED SCHEDULE COSTGEN 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 92,426 278,065 0 -185,639 92,426Funding Type-CTotals: 3,683,091 3,398,276 2,494,443 -284,815 903,832 4,127,386

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

•Still have a problem decoding and transferring CD labor in WBS 1.7 to DECam PPD codes -will get this fixed next week

•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•Additional engineering in 1.5 and 1.3 will bring those closer to the scheduled progress and cost

•L2 managers will go through the schedule in detail one more time before we are ready to go to project funds.


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FEE – Lots of progress

• We have scheduled a DES FE Electronics workshop for September 17-19– We will review

• all Monsoon board designs• power supplies• cabling• AlN board design• Vacuum Interface Board• crate mechanical design• crate slow controls design

• Will resolve many/all of the questions raised at the CD-1 review


12

CCD readout noise reduced

New Sequencer code from Ricardo Schmidt (CTIO) has allowed us to speedup our readout! Now we meet the tight DECam spec of <10e at 4.0 usec/pix


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From the Monday CCD meeting: readout of single CCD with new sequence


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Multi-CCD Readout!!

Each CCD has differentcables and thus different noise

The best channel meets our tight specifications with synchronous readout of four CCDs!!


15

Clock Board Recent progress

• Engineers from IFAE (Barcelona) and CIEMAT (Madrid) have been here since June 26

• Clock Board (Madrid) has been successfully exercised at FNAL– Monsoon interface works well– New focal plane created to exercise clocks– Able to readout CCD with ~12e- at 4us

Clock Board


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S-Link working at FNAL

• Engineer from Barcelona brought boards and software

• S-Link optical communication is now working at FNAL (replaces Systran)

• Ran overnight without crashing

• Installed on “icestorm” – WH14 and “typhoon” – SiDet

• Will become DECam standard and may be adopted by NOAO


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Other progress/news

• CCD Yield prediction based on Cold probe data for 40 devices and estimates of the cosmetics and other factors from the Lot 1B devices

– Present yield, 21+ 6 -8%, and our expected understanding of its uncertainty suggests that unless we hope for an improvement of 1.4x, we will need to order another lot of 24 wafers (3A) from Dalsa.

– Present yield and expected understanding of its uncertainty suggests we will not need to order the contingency Lot (3B) in Dec. ’08. This would change if the yield drops.

– Dalsa and LBNL are repolishing wafers in preparation for starting Lots 2C and 2D – adding an additional lot now costs $120k and would ensure that all lots are

processed in the same way and are from the same boule with the same resistivity.

– this would significantly reduce the risk from the CCDs to the project– Currently working with PPD to determine if this is possible

• Conceptual design of mounting system for F/8 mirror looks promising – if successful we can avoid the top-end flip and simplify cable and cooling pipe routing.


18

Preparing for LN2 Test Inside Lab A, Fall ‘07

200 W Heat Exchanger12 Meter Elevation

200L

1) Confirm heat can be removed from the camera vessel without trapped vapor pockets in the plumbing.

2) Confirm that vibration due to fluid flow and bubble formation is not a problem.

3) Confirms plumbing can be pumped to the cage.

Favorable tests results allow: Going ahead with smaller vessel, Alternative cooling methods are not needed.


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Up-coming Meetings and Workshops

• Cooling workshop end of July/August, External review in Sept.– Herman, Rich and Dave are assembling documentation. Will set

a date for the workshop next week.– CTIO participation is important!

• Brenna, Darren and John will go to CTIO ~ Aug 20 to work out many technical details on CFIP/ DECam interactions and DM-NOAO interactions


20

Heat Load CalculationsFirst step in response to CD1 Review

H. Cease


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Prime Focus Heat Load Calculations

Item Heat Load Focal Plate -80 CAmbient 27 C

Heat Load Focal Plate -100 CAmbient 20 C

Heat Load Focal Plate -140 CAmbient 27 C

Focal Plate Thermal Radiation (front surface only)Emissivity = 1

38.7 Watts 37.7 WattsANL Report 45 Watts

45 Watts

Conductivity Focal Plate Mounts

0.5 Watts 0.6 Watts 0.9 Watts

CCD Electronics Electronic Power(70 CCDs)

28 Watts 28 Watts 28 Watts

Conductivity cables 7 Watts 8 Watts 11.5 Watts

Thermal Control Trim Heaters 0-40 Watts 0-40 Watts 0-40 Watts

Heat Exchanger Radiation 12.6 Watts 11.4 Watts 12.6 Watts

Conductivity Mounts 0.8 Watts 0.8 Watts 0.8 Watts

Total 88 Watts Heaters Off128 Watts Heaters On

87 Watts Heaters Off127 Watts Heaters On

99 Watts Heaters Off139 Watts Heaters On

Nee

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incl

ude

VIB


22

Multi-CCD Test Vessel Heat Load Calculations

Item Heat LoadFocal Plate -100 C

Ambient 20 C

Focal Plate Thermal Radiation (front surface only)4 out of 70 CCDs

11 Watts

Conductivity Focal Plate Mounts

0.63 Watts

CCD Electronics Electronic Power(4 out of 70 CCDs)

1.6 Watts

Conductivity cables 0.5 Watts

Thermal Control Trim Heaters 0-48 Watts

Heat Exchanger Radiation 19 Watts

Conductivity Mounts

0.29 Watts

Total 33 Watts Heaters Off81 Watts with full heater

power


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Multi-CCD Test Vessel Heat Load Measurements32.5 Watts Measured - 33 Watts Calculated !!

More measurements are planned – this agreement is too good


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Profiles and Dates

• DECam is in the FY08 Presidents Budget Request for a construction start and $3.6 M in equipment funds.

• We were asked to investigate the following funding profiles, with the knowledge that FY-08 and 09 are ~ fixed and there is flexibility in the FY10-11 numbers.

MIE FY08 FY09 FY10 FY11Guidance 1 3.6 7.5 5.4 2.3Guidance 2 3.6 6.5 5.4 3.3


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Labor (FTEs) in CD in DECam Project

CD_ENG_PHY 0.4CD_SD_EAG 1.4CD_SD 0.4

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