[asac] [almanews] ALMA Memo 400 Released

[Stacy Oliver]

ALMA Memo #400

A Proposal of Optimized Configurations for the ALMA

Frederic Boone (Observatoire de Paris)

2002/01/14

Keywords: configurations

A set of optimized configurations is presented. It results from the
application of two previous papers dedicated to the design of interferometer
arrays in general: the optimization of the locations of the antenna pads is
performed using the Antenna Position Optimization software introduced in
Boone (2001) and conforming to the analysis developed in Boone (2002). The
constraints and the specifications are taken from the recommendations made
at the Preliminary Design Review of February 2001. The feasibility of a
design based on an inverse approach is demonstrated. The locations of the
pads are determined by the scientific goals translated in terms of target
distributions of samples. The method used allows, at the same time, to
control the quality of the distribution of samples (shape and mininimum
density of samples) and to take into account the constraints and
specifications (topography, number of pads, range of resolutions). The
computing time required to get a complete array is of about 3 hours on a 1
GHz PC. Rather than a fixed geometrical concept the design can therefore be
seen as a numerical solution that can be re-computed for any change in the
specifications or constraints.

Download a zipped postscript version of ALMA Memo 400.
http://alma.aoc.nrao.edu/memos/html-memos/alma400/memo400.ps.gz

View a pdf version of ALMA Memo 400.
http://alma.aoc.nrao.edu/memos/html-memos/alma400/memo400.pdf

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