The Expanded Very Large Array - National Radio Astronomy ...

The Expanded Very Large Array - National Radio Astronomy ...

Budget, Schedule, Contingency Mark McKinnon EVLA Project Manager Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006 Outline Schedule Budget Contingency Project Risks Risk Analysis Descope Options Mark McKinnon

EVLA Advisory Committee Meeting May 8-9, 2006 Schedule Completion Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006 WBS Level 2 Completion Status WBS Element % Spent % Complete Project Management 52.1 45.8 Systems Integration

76.1 70.1 Civil Construction 87.8 80.5 Antennas 69.1 59.2 Front End Systems 55.1 43.4 LO Systems 75.5 75.1

Fiber Optic Systems 64.4 58.8 IF Systems 61.5 52.7 M&C System 57.6 51.1 Data Mgt. & Computing 51.2 40.0 Mark McKinnon

EVLA Advisory Committee Meeting May 8-9, 2006 Antenna Retrofits Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006 Maintaining Schedule Staff is becoming more efficient in antenna retrofits Operating antenna can be produced in about 3 months Retrofits becoming an assembly line Major components stockpiled (e.g. cryo compressors, L-band feed horns) Most electronics designs are mature All retrofits have proceeded serially, except for most recent retrofit of antenna 26 Original project plan calls for overlap of antenna retrofits. Project is staffed for overlapped retrofits.

With a 1 month overlap, a 3 month retrofit duration, and a 1 month testing period, the rate of antenna retrofits can be accelerated from 5 to 5.5 antennas per year. Expect progress in software areas of the project because of recent addition of e2e staff, formation of e2e Division, and finalization of M&C design. Shift front end production emphasis to Ka-band while solving design issues with wideband OMT. Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006 Budget: Staff Profile Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006

Contingency Cost to complete project = $37.39M Current contingency = $2.83M Percent contingency = 7.6% Prefer contingency at minimum of 15% Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006 External Risk Factors Strength of Canadian dollar Correlator funding profile NRAO operating budget Commodity prices

Aluminum, steel Gold plating Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006 Retirement of Risk Bulk purchase of half transponders Bulk purchase of module interface boards Successful implementation of reference pointing M&C software support of transition mode observing Eliminated spurious correlation with redesign of digitizer in DTS Solved timing problem between EVLA and VLA antennas Solved image rejection problem in 4P downconverter (T301) with new filter design Solved aliasing problem in baseband downconverter (T304) that

limited sensitivity with new filter design Selected appropriate fire protection system for new correlator shielded room Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006 Project Risks Failure to stay on manpower curve

Extend e2e support Extend AIPS++ support Contribute to EPO program Improve RFI protection Additional module parts Additional feed costs (S, X, Ku) Spare correlator boards Improve phase stability & RTP Improve wideband OMT Improve synthesizer (L302) Correlator installation manpower Redesign 3-bit, 4Gsps samplers IF retrofits Feed demoisture system Mark McKinnon $1.2M $1.1M $1.0M $0.5M $0.3M $0.3M $0.3M $0.2M $0.2M

$0.2M $0.1M $0.1M $0.1M $0.1M $0.1M EVLA Advisory Committee Meeting May 8-9, 2006 Risk Analysis Sum total risk = $5.8M Root sum square risk = $2.1M Contingency = $2.8M Conclusion: contingency coverage of risk is marginal Goal for FY06 is to refine contingency and risk analysis at finer level of detail (i.e. increase contingency and more accurately assess risk). Mark McKinnon

EVLA Advisory Committee Meeting May 8-9, 2006 Value of Descope Options Eliminate receiver bands: X (8-12 GHz) Ku (12-15 GHz) S (2-4 GHz) Ka (26-40 GHz) $1.0M $1.3M $1.4M $1.2M Purchase receiver components, but assemble/install as part of operations

X Ku S Ka $0.2M $0.2M $0.4M $0.2M Eliminate solar observing mode $0.2M Transfer e2e effort to operations budget $0.7M Reduce number of antenna retrofits Mark McKinnon EVLA Advisory Committee Meeting May 8-9, 2006

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