Transition from SKADS to PrepSKA

Richard Schilizzi

Lisbon, 3 October 2008

PrepSKA deliverables

• Produce a deployment plan for the full SKA and a detailed costed system design for Phase 1

• Integrate all of the activities, reports, and outputs of the various working groups to form an SKA implementation plan including a build plan

proposal for construction funding in 2012

PrepSKA Work Program

WP1 PrepSKA management

WP2 Costed telescope design

WP3 Further site characterization in Australia and Southern Africa

WP4 Governance

WP5 Procurement and involvement of industry

WP6 Options for funding

WP7 Impact on broad government priorities

PrepSKA

06 | 08 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |

System DesignSystem DesignSKA mid + low SKA mid + low

construction and construction and commissioningcommissioning

SKA-high SKA-high ConstructionConstruction

Sites short-listed

EC-FP7: PrepSKA

System design Funding

Governance Site Selection

Preliminary SKA specs External

Engineering Review of design

Reference Design selected

Design Studies/Pathfinder Suite Construction

Early ScienceEarly Science SKA SKA mid+lowmid+low

SKA-mid+lowSKA-mid+lowCompleteComplete

SKA SKA PathfindersPathfindersCompleteComplete

System System design design SKA-hiSKA-hi

Pathfinder science

Phase 1 complete

Concept Concept DesignDesign

SiteSelect

Concept design for Concept design for SKA-highSKA-high

Detailed Detailed Design/Phase 1 Design/Phase 1

construction and construction and commissioningcommissioning

SKA timeline

Full science operations SKA mid+low

WP2 deliverables(Peter Dewdney “Guiding Principles, Activities and Targets for WP2”)

• Technology selection• System Design

– including operational – construction tradeoffs• Science Performance vs Reference Science

Mission• Total cost estimate for Baseline Design (incl.

contingency)• Risk assessment• Design and deployment plan• Top-level build schedule• Upgrade paths

Science Requirements

Engineering Design & Cost

The Job of WP2

Readiness Assessments

Eng. Simulations

Prototypes

Pathfinders

Technical R&D Fou

r Y

ears

Case Studies

SKACost

National PrepSKA SKADS TDP LOFAR ASKAP KAT7 ATA EVLA MWA eMERLIN eEVN Path2SKA

Approach

• Focus WP2 Description of Work in a different way– Move from 40 technology development tasks, including

an ill-defined ‘IVS’ to assembly and verification of large SKA sub-systems

– identify and fill gapsNote: Need an integrated systems approach at sub-unit

level, eg• Feed dish design; LNA feed design

• Dish Verification Program• PAF Verification Program• AA Verification Program • Signal transport Verification Program• …..

Original WP2 technology matrix

Dish Verification Program

Dish fab group 1DRAO

Dish fab group 2

TDP

Dish fab group 3

NRF

Feed group 1

TDP

Feed group 2

NRF

Feed group 3CSIRO

Mount group 1

TDP

Mount group 2DRAO?

Dish verification program

VLA?Antenna

optics group 1

NRF

Antenna optics

group 2TDP

Lead InstituitionTDP

1. Optimized single-pixel feed antenna system

1.2 Antenna

Antenna optics Group 2Dish fab Group 2Mount Groups 1,2

1.3 Focus sub-system(inc cryogenics)

Feed Groups 1,2LNA/receiver Group 1

1.1 Project management

Lead Institution

1.4 System integration

Lead Institution

1.5 Cost analysis and report

Lead Institution

LNA/receiver Group 2ASTRON

UMAN,UOXF, MPIfR, OBSPAR,

IT

LNA/receiver Group 1

TDP

UCAL, CSIRO

Lead InstituitionTDP

2. Alt-Az mounted antennaWBSPF/PAF

2.2 Antenna

Antenna optics Group 2Dish fab Groups 2,3Mount Groups 1,2

2.3 Focus sub-system(inc cryogenics)

Feed Groups 1,2,3LNA/receiver Group 1,2

2.1 Project management

Lead Institution

2.4 System integration

Lead Institution

2.5 Cost analysis and report

Lead Institution

Lead InstituitionCSIRO

3. Sky-mount antennaWBSPF/PAF

3.2 Antenna

Antenna optics Group 1Dish fab Group 1,3Mount Groups 1,2

3.3 Focus sub-system(inc cryogenics)

Feed Groups 1,2,3LNA/receiver Group 1,2

3.1 Project management

Lead Institution

3.4 System integration

Lead Institution

3.5 Cost analysis and report

Lead Institution

Lead InstituitionNRF

4. Offset optics antennaWBSPF/PAF

4.2 Antenna

Antenna optics Group 1Dish fab Groups 1,3Mount Groups 1,2

4.3 Focus sub-system(inc cryogenics)

Feed Groups 1,2,3LNA/receiver Group 1,2

4.1 Project management

Lead Institution

4.4 System integration

Lead Institution

4.5 Cost analysis and report

Lead Institution

WP2 approach

• Required parameter space can be covered with a small no. of models

• Contributing institutions contribute designs to several models

• Verification Programs will need to include a build and test phase, on the way to deriving the cost by 2012Q1 (end of PrepSKA)– VPs are self-evaluating

• SKA Design Studies and Pathfinders provide the R&D basis for the VPs– Need to target those aspects that map into the SKA– Documentation essential

• Effectively evaluate the feasibility of implementations outlined in Memo 100

Representative implementations: Phase 1

Representative implementations: Phase 2

SPDO in the PrepSKA era

SPDO Engineering Team

Project Engineer Peter Dewdney

System Engineer Kobus Cloete

Domain Specialist Receptors Neil Roddis

Domain Specialist Signal Transport Roshene McCool

Domain Specialist Computing & Duncan Hall

Software

Domain Specialist Signal Processing advertised

Site Engineer Rob Millenaar

Project Management Officer interviews next week

Liaison Engineers

Senior engineering managers

Roles

• Lead design teams for which the Lead Institution has assumed responsibility

• Serve as communication person for relations between SPDO and Lead Institution

WP2 Schedule

• SPDO staffing, familiarisation and training (ongoing)

• Appoint liaison engineers (ongoing)• WP2 Kickoff meeting, 10-14 Nov (Deliverable #1)• MoAs with organisations/lead institutions (ongoing)• Review Reference Science Mission, Dec08• State of SKA technology

– call for documentation (Jan 09)

• Review by International Engineering Advisory Committee, Mar 09 (Deliverable #2)

WP2 deliverables SKA operations concept WP2 9 6 R PP 12

Composite volume, SKA life cycle study, operations plan and support model – Y3 report

WP2 10 89 R PP 36

Composite volume, SKA cost and performance optimization, manufacturing studies and technical documentation – Y3 report

WP2 9 133 R PP 36

SKA system design – interim report WP2 9 47 R PP 36

Sub-system hardware specifications WP2 9 12 R PU 15

Report on sub-system integration and evaluation WP2 9 24 R PP 27

Y3 Report on IVS specification WP2 9 33 R PP 36

Y3 prototype IVS hardware WP2 9 48 P PP 36

Y3 Report on IVS integration and test WP2 9 42 R PP 36

Y3 report detailing performance and cost data for high dynamic range ASKAP antenna

WP2 15 10 R CO 36

Y3 report detailing performance and cost data for composite MeerKat antenna

WP2 7 10 R CO 36

Y3 report detailing performance and cost data for carbon fibre antenna

WP2 8 10 R CO 36

Y3 report detailing performance and cost data for TDP antenna WP2 12 10 R CO 36