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Brian has already sketched out these costs for a 20-40 channel system
by something on the order of 300 MHz bandwidth. The main unknown is
number of channels, but 40 is not unreasonable given our earlier ATI
planning and signal transport limitations. So, he may already have the
answer.<br>
<br>
Karl<br>
<br>
Jonathan Landon wrote:
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valign="top">That sounds like a question with a really long answer.
I'll ask at the CASPER meeting today if there's an obvious way to
approach it. Don Backer's group is currently using a 32-element
correlator, so I would think the cost for a 38-element beamformer would
be similar.<br>
Jonathan<br>
<br>
<br>
--- On <b>Wed, 2/3/10, Rick Fisher <i><a class="moz-txt-link-rfc2396E" href="mailto:rfisher@nrao.edu"><rfisher@nrao.edu></a></i></b>
wrote:<br>
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From: Rick Fisher <a class="moz-txt-link-rfc2396E" href="mailto:rfisher@nrao.edu"><rfisher@nrao.edu></a><br>
Subject: [Pafgbt] PAF beamformer size and cost<br>
To: <a class="moz-txt-link-abbreviated" href="mailto:pafgbt@nrao.edu">pafgbt@nrao.edu</a><br>
Date: Wednesday, February 3, 2010, 2:05 PM<br>
<br>
<div class="plainMail">This is an incomplete question, but
maybe we can beat it into something <br>
answerable: Do we know enough about existing applications on CASPER <br>
hardware to make a conservative estimate of what it would cost to build
a <br>
PAF beamformer with a given set of specs? I'm looking for at least two
<br>
estimates. What is a realistic set of specs for the first science PAF <br>
beamformer, and what would the dream machine that would make a big <br>
scientific impact cost? You're welcome to define the specs that go
with <br>
either of these two questions or I'll start defining them by thinking
"out <br>
loud". The first science beamformer will guide the initial system
design, <br>
and the dream machine will help get a handle on longer range
expectations.<br>
<br>
Cheers,<br>
Rick<br>
<br>
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<pre class="moz-signature" cols="72">--
Karl F. Warnick email: <a class="moz-txt-link-abbreviated" href="mailto:warnick@byu.edu">warnick@byu.edu</a>
Associate Professor Tel: (801) 422-1732
Department of Electrical & Computer Engineering FAX: (801) 422-0201
Brigham Young University
459 Clyde Building
Provo, UT 84602
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