Allison, stuart, hiyoshi, al, richard, others
wilson, rudiger, remy, carol, mark, todd, testi



Antennas at high site and working. Presently connectivity being checked out.
Alison--link being investigated. 100msec time lags; being investigated.

Report to ASAC. See link on edm. Kurz report, REH has added material including
more pictures. Schedule evolution news mixed--OK for three antennas and getting them
to operate. Should get there by end of year. Short term beyond that features new
delays, front ends, almaj antennas and other issues which should be minor but must
be managed. Two element interferometry at OSF may be delayed into next year. Having
6 antennas March April well into middle of next year now. Rates of production of items
needs to be speedier.
Discussion of state of the project.
Todd: beam at 85 ghz still has an issue.
Crystal. Why is management so far up?
REH: Marching army costs, more management such as system engineering. Also SCO building.
There is a big story behind each item. Only approved when detailed change request goes in.
Science is marching army, for example.

Software latency. Issue: there is no efficiency requirement so we need to have a
plan for this. Darrel suggested this form.

Boyan: recovery from a crash goal 5 minutes. Depends on rate of crashes per day.
RH: I would expect CIPT to say this should be weeks.
BN: No more than once a day.
AP: Operational efficiency.

AP: current activities. Holography on one dish, another has a failed hexapod. LEDs in
them fail on regular basis. May be able to do something tonight. Still computing on the
AOS antennas.

CSV/Ops reviews--will circulate with responses when possible.

New members of team.

Band 6
New pad moved. BN suggests that 1% ofbaselines moved so looking at fitted beam will just shod
changes of ~1%. Those looking for finest structure will be most interested in longest
baselines alone.
RH: It is unclear just how many high resolution baselines one needs to retain high
fidelity. Beam gets elongated. This is a few per cent. The concrete is poured.

RH will distribute new pad locations.

Calibrators. Sadler and Laing looked into new high frequency survey with ATCA. These
look promising, not too far off Holdaway's assumed numbers. Means may have to go a little
further from any given position by 1.4x. Their paper is essentially ready should be
accepted within a week or so. Then the list goes into the archive and we can use it.
There are many unpublished results on spectral indeces, size, etc. ATCA has a 6 km
baseline.
RH: Please keep us informed.
LT: Sadler will send short presentation.

WVRs. BN plotted up data. WVRs are recording sky and brightness fluctuations, show
correlation. Short term correlation looks good, longer term changes may be in instrument
or in atmosphere. this is on OSF baseline. LLC is not in place for this.
Red is the differrence in output from WVRs other trace is interferometric path.
Some combo of four black plots would be used to correct red plots.

eSSR or implementation review. AP: SciOps implementation plan was held on two days.
Preliminary report is in, mostly favorable, covers Chile plus ARC support. We await
final report in a few weeks.
There is nothing very new with eSSR. Still refinement on sci reqs going on. Archive
being installed at OSF. Andreas is working with us to get that working.
Shift Log Tool
Project Tracker.

Chris Wilson. Subsystem sci. Question for implementing freq switching in pipeline.
RH: This came up in a bit of discussion with software. We told them this was quite some
way off in relative priority.
AP: Testing in pipeline is a way off. I will check schedule.
RH: This mode is most important for extended objects, CO in particular.
RL: When trying to get zero spacing info on projects which need sideband separation.
Must use double freq switching to separate sidebands.
RH: Should appear in use cases somewhere. I wasn't aware of this.
DTE: Also works most efficiently.

DRSP. Updated. Missing items included.
LT: Proto excel table is there. Do we need to invest effort in completing that table.
Assesses time in configurations, bands, etc.
RH At some point we need to discuss this. The time assessment is probably most important.
LT would discuss with someone in SciOps group.
RH: Issue of adequate data rate. To investigate in more detail we might start here.
Let us organize a little effort to look at that question.
CB: A concern of mine: extent to which people asked for all that they might really want.
I think people underestimated their use of the correlator.
LT: No, most did not.
AW: We need to put these through the OT.
LT: We tried that. Most only want one line.
AB/HSL: Seems pretty straightforward to get these in.
LT: Most projects are simplistic in use of correlator.
CB: Second concern. PPDisk folks do not understand the constraint.
RH: A small working group with you as leader need to show some limiting projects. Review
internally, then show to community.

Meeting in Koln.
CB: For Sp line catalog I do not want to go into details but the catalogers feel a need to get
appropriate credit. We discuss possible resolutions. Can someone come up with a creative
way to cite things. I thought it was particularly difficult in the US to get cross
discipline funding. We need a white paper for funding these items. Also a problem in
Europe.
LT: I agree. In Europe some money may be found on few year timescales but long term
including funding of key personnel is a problem. One solution to massive citations would
be to publish all data every few years with all authors, always to cite this reference.
Part on science tools was not promising, not concrete really.
JH: There is still no worldwide standard for spectral line designation. Referees need
to be alert to this. ALMA could have a strong case for referees to cite appropriately.

Next date--let us stay with it.
RH-note a technical presentation on edm at the link in the first item. That includes
some slides on Darrel's work on thermal behaviour of antennas.


-- AlWootten - 2009-10-21

This topic: ALMA > WebHome > AlmaSci > AlmImcal > MonthlyMeetings > 21Oct09Notes
Topic revision: 2009-10-21, AlWootten
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