Access:
Fly into Albuquerque. It is about 70 miles, one hour, to Socorro. For
detailed directions,
click here. To reach the AOC, you must either rent a car, or take a
shuttle, which is ~$50 each direction, to get from the airport to Socorro.
If you haven't already made arrangements for transportation from Albuquerque
to Socorro, you'd better do so pronto! Please contact
Bryan Butler if you need assistance
with this.
Lodging:
If you haven't already made arrangements for lodging, you'd better
do so pronto! Please contact Bryan
Butler if you need assistance with this.
Goal of the meeting:
select a baseline design to continue with detailed implementation work ...
CDR Review Guidelines:
CDR Review Guidelines Version 2 - 98November09 P. J. Napier
The purpose of the CDR of an MMA Subsystem is principally to review 3
questions:
(1) Are the detailed requirements for the subsystem complete and adequate?
(2) Will the design selected for implementation on the test array meet the
requirements?
(3) Are interfaces to other subsystems defined adequately and completely?
(4) Has adequate attention been given to the produceability and maintainability
of the subsystem?
Meeting organization and attendance to be the same as a PDR. MMA199901-0010
click here for full description.
Review Panel Scorecard:
It is recommended that when review panel members are considering the
comparison of different configuration design philosophies (and specific
designs to that philosophy), they keep in mind the following points:
1 - Science
Does it meet the PDR recommendations on resolution, UV
sampling, etc? (compact array should maximize brightness sensitivity;
intermediates should have gaussian uv density; extended should have maximum
resolution without forcing any fiber runs > 25 km).
Beam metrics
uv metrics (e.g. radial and azimuthal uv distributions)
Simulation results
2 - Cost
Number of pads minimized (although, keep in mind that this is really a
bit of a red herring until we have better cost estimates for foundations
as a function of location on the site)
Is there apparent difficulty getting to some locations (implying longer
roads and cable runs)?
3 - Operations
Is one design easier to operate and maintain than another?
4 - Flexibility & robustness
How robust is the overall design philosophy to changes?
e.g., robustness to antenna position adjustment due to terrain -
randomly displace all antennas by 10m RMS and see how sidelobe levels
are changed, OR, robustness to antennas being dead or pads being unusable -
omit 4 antennas a) randomly; b) worst case (adjacent)
Is the configuration style flexible ('fixed' vs. 'flowing'
types)?
Are the 'hybrids' reasonable - including N-S elongation, and
the hybrid between the largest intermediate and the extended configuration?
What about 'multi-configuration' (which loses some of its
meaning in the 'flowing' antenna move style) capability?
Documents:
The most important ones:
Final report of the Configuration PDR in Grenoble in 2001Feb.
Leonia Kogan's compact configuration design:
description
pad locations
John Conway's intermediate configurations design:
description
pad locations
Adrian Webster's configuration design:
description
pad locations
Frederic Boone's configuration design:
description
pad locations
other lists of relevant publications, memos, etc... can be found at:
Pre-2000Mar
Post-2000Mar