DS8: Overall System Design

1
DS8 Overall System Design Preliminary SKA Plan

2
DS8 the final product!

• EC SKADS proposal March 2004
• At the end of DS7 a preferred design to
  satisfy the multi-field-of-view requirement will
  be selected and we will then proceed to a single
  system design (DS8).

Now need to cohere with the reference design
3
DS8 the final product!

• Whole point of the Design Study
• to find a way to build the SKA which convinces
  international community and funding agencies
• the DS(-T)s are not are ends in themselves
• Importance of Ownership of the results
• we all have to own the final product
• we need a scheme which produces that and allows
  all to contribute
• collegiality is very important

4
DS8 the final product

• The aim is to produce
• i) an end-to-end architectural and
  functional
• design for the preferred concept
  and a costing,
• paying attention to the civil
  works required for
• the array
• ii) a study of funding sources and
• iii) a preliminary project plan.
• Requires us to pull together the results from
  the entire work programme and to incorporate
  technology foresight.
• The deliverable will take the form of a Square
  Kilometre Array White Paper that will contain a
  preliminary project plan to be submitted to the
  International SKA Steering Committee in 2008.

Now have to cohere with international project
plan
5
DS8deliverables and timelines

• DS8-T1 Overall System Design T046
  Report
• DS8-T2 Preliminary SKA Plan T047.5
  Report
• Overall System Design
• and Preliminary SKA Plan T0
  47.5 Combined report

This DS will not be required
until very close to the end of the study
and its format and structure will be decided
closer to the time. (EC SKADS PROPOSAL)

6

SKA timeline
1 SKA Science
International review of design
Legal Entity for SKA Formed
ISSC MoA-2
SKA Complete
Initial concept
10 SKA Science
First SKA Working Group
Site ranking
ISSC MoA-1
Site Selection
Science Case published




2000
92 96 04 05 06 07 08 09 10 14 18 22

2000



Feasibility study
Phase 2 Build 50 SKA
Concept exposition
Define SKA System
SKADS
Design Build SKA pathfinders ATA, KAT
xNTD 1 SKA
Select Reference Design
Phase 3 Build 100 SKA
Phase 1 Build 10 SKA
LOFAR 10 SKA at 100 MHz
7
DS8 the final product

• DS8-T1 Overall system design (UMAN) to
  optimise the station architectural design and in
  terms of scalability, functionality and to
  minimise the cost vis-à-vis anticipated
  technology changes to produce an end-to-end
  architectural and functional design for the
  preferred concept.
• The principal objectives are
• 1) to follow the advice of the Design
  Review Committee (DS7) and to use the outcomes of
  the technical preparatory work to establish a
  multi-parameter cost equation and its derivatives
  for a range of station technologies/architectures
• 2) to examine the most cost-effective
  upgrade routes, since SKAs scientific output
  will be limited by the processing power available
  at any given time.

8
DS8 the final product!

• DS8-T2 Preliminary SKA plan (ASTRON) to provide
  an overview of the plan from design to
  construction, including a study of funding
  sources.
• There are two main products an
  organisational plan and an operational plan.
• Other issues to be considered include
• 1) industrial partnerships
• 2) an IPR plan
• 3) funding mechanisms
• 4) links with international SKA effort and
  possibility of a hybrid
• design involving more than one
  collector technology.
• 5) maintenance requirements of the SKA
• 6) a reliability analysis (assessment of
  failure modes) of the SKA
• 7) a risk analysis for the entire plan

9
The DS8 TEAM

• P. Wilkinson (UMAN) - coordinator
  
• The SKADS Executive Committee
• - The Chairman, vice-chairman of
  Board
• - The Management Team
• - The leaders of the DS
• - At large S. Rawlings (SWG)
• PLUS as appropriate
• Members of SKADS Board - Experience of
  funding/politics/governance
• (Experience of industrial consultants via DS7
  final report)
• (Experience of ALMA LOFAR via DS7 final
  report)
• European SKA outreach members report
  production skills

10
DS8 the final product!

• Producing the final report
• steps towards this must be
  organically linked in with overall
• management and month-month
  coordination of the DS
• it is the culmination of these
  processes, not a separate entity
• -- the report to include all the
  EC requirements e.g. including
• DS2 results on science scope
  and technical specification
• -- form of links between DS-Ts
  within each DS and between DS
• not yet crystallized
• ? premature to be
  prescriptive on how the DS8 team will work

• BUT
• SKADS is self-sufficient for producing DS8
• SKADS DS8 team must work closely with ISPO

11
END
12

SKA timeline
1 SKA Science
International review of design
Legal Entity for SKA Formed
ISSC MoA-2
SKA Complete
Initial concept
10 SKA Science
First SKA Working Group
Site ranking
ISSC MoA-1
Site Selection
Science Case published




2000
92 96 04 05 06 07 08 09 10 14 18 22

2000



Feasibility study
Phase 2 Build 50 SKA
Concept exposition
Define SKA System
SKADS
Design Build SKA pathfinders ATA, KAT
xNTD 1 SKA
Select Reference Design
Phase 3 Build 100 SKA
Phase 1 Build 10 SKA
LOFAR 10 SKA at 100 MHz
13
The SKADS Executive Committee

• Monitor progress of the SKADS activities against
  the milestones agreed by the Board.
• Receive progress and financial reports of all
  activities via the SMT.
• Receive periodic reports from the Design Study
  Task leaders.
• Act on strategic decisions and recommendations
  made by the SKADS Board.
• Report to the Board on a regular basis on the
  progress of SKADS and on any strategic issues
  requiring attention.
• Chairman, vice-chairman of Board, the SKADS
  management team, leaders of the Design Study
  Tasks

14
Comments from Dec 20/21 Zandaam Meeting

• System-engineering tasks in DS3/DS4/DS5/DS6 all
  to be coordinated by the Project Engineer
• A system design team must emerge from system
  engineering teams in all other places linked by
  the Project Engineer.
• In LOFAR the system architecture role is
  different from project engineers
• the coordinating role ?
  the DS7 Project Engineer
• the architecture role ?
  the DS8 task
• In ALMA there is an integrated project team
  reporting to central management which includes
  the project engineer who is responsible for all
  technical work - supported by a lot of system
  engineers on the various projects.