[mmaimcal] RE: Proposed ALMACalendar text.
Adrian Russell
arussell at nrao.edu
Thu Apr 28 22:43:13 EDT 2005
Fine by me.
> -----Original Message-----
> From: Al Wootten [mailto:awootten at nrao.edu]
> Sent: 28 April 2005 10:33
> To: mmaimcal at nrao.edu; tbeasley at nrao.edu; Adrian Russell
> Subject: Proposed ALMACalendar text.
>
>
> BIWEEKLY CALENDAR OF THE ALMA PROJECT at NRAO
> April 25, 2005 -- May 9, 2005
>
>
> ******************************** THIS
> FORTNIGHT*********************************
> Changes to the management structure of the ALMA project have
> been effected.
> These changes have been jointly developed by the Executives
> and the JAO, and
> were discussed and adopted at the April 2005 ALMA Board meeting.
> * Site IPT: Effective immediately, all site activities are
> placed under JAO
> management control, with the Site IPT lead/deputy reporting
> directly to the
> ALMA Project Manager. All site-related purchases, contracting
> and hiring
> require the authorization of the ALMA Project Manager (with
> specific areas
> and activities directly delegated to the Site IPT lead and
> deputy by the ALMAPM)
> * System Engineering & Integration IPT: The transfer of SE&I
> to JAO management
> control (begun in 2004) will be completed immediately; all
> SE&I purchases,
> contracts and hiring require the authorization of the ALMA
> Project Engineer
> (with specific areas and activities directly delegated to the
> SE&I IPT lead
> and deputy by the ALMA PE).
> * Although budgetary authorization for these IPTs
> is now transferred to the JAO, the Executive Project Managers
> remain in close
> contact with the technical developments through their roles
> on the Change
> Control Board and the Management IPT, and should be consulted if any
> difficulties arise. Procurements and recruitments will
> continue to occur
> via normal Executive processes. These changes have been
> implemented to assist
> the JAO in coordination of ALMA activities in Chile, and to
> provide optimal
> use of our distributed management resources.
> ----------------------------------------------------------------------
> In Feb. 2005, the EU informed ESO that a contract for the proposal
> 'ALMA Enhancement', submitted in March 2004, could be
> negotiated. The ALMA Board is considering this proposition
> for an ALMA enhancement. The EU funding will provide funds
> for the receivers and necessary software.
> This proposal involves building a prototype and 8 production
> receivers for ALMA
> Band 5 (163-211 GHz) on ALMA antennas and providing software
> needed to make
> use of the Band 5 receivers to map the extended 183 GHz water
> vapor emission for comparison to lower spatial resolution
> data in other water emission lines expected from Herschel.
>
> At its Pasadena meeting, the ALMA Board encouraged 'the
> continued negotiations
> between ESO and the EU to obtain support for the
> implementation of 8 Band 5
> cartridges on ALMA, the development and implementation of
> advanced radiometric
> phase calibration techniques, and of software for on-the-fly
> mosaicing. The Board notes that the process of integration
> and commissioning of the
> receivers into ALMA will be scheduled and managed solely by
> the JAO with
> no extra costs or delay to the Project.
> ----------------------------------------------------------------------
> Past issues of this Calendar may be viewed at
> http://www.cv.nrao.edu/~awootten/mmaimcal/ALMACalendars.html
> **************************************************************
> *****************
> General Happenings
> Santiago: Interviews for Safety Manager position occurring.
> Version A of Operations Plan is being prepared.
>
> OSF: Call for Tender for the OSF construction was issued;
> closing date July '05. The first large snowfall of the season
> hindered access to the site at the
> beginning of the period. 26 persons working at the site.
> Radford visiting.
>
> Tucson: Work on simulations for the Board on Physics ans
> Astronomy's Review of
> the Science Requirements for the Atacama Large Millimeter
> Array finishes. LAMA Memo Series moving to ALMA Memo Series.
>
> ATF: JATG Testing and report completed.
>
> NTC: First Band6 (1.3mm) cartridge installed in first ALMA
> cryostat; mating went well and testing is commencing.
>
> NAASC: Moves into new quarters to be completed this period;
> planning for ANASAC meeting and for meeting on Z-machines for
> extragalactic CO continues.
>
> **************************************************************
> *****************
> DAILY CALENDAR (Times EDT )
> Mon 25 April
> 9:30 AM-10:30 AM: NA Project Office Staff Meeting
> 10:30 AM-11:30 AM: JAO IPT Telecon
> 11:30 AM-12:30 PM: NA DH telecon
> 1:00 PM- 2:00 PM: NA Telecaucus
> Tue 26
> 11:00 AM-1:00 PM: ALMA Board Telecon
> 4:00 PM-5:00PM: NAScienceIPT teleconference (open to all interested
> parties) (434)296-7082
> Agenda: http://www.cv.nrao.edu/~awootten/mmaimcal/
> Wed 27
> Thu 28
> 9:30 AM-11:00 AM: Management IPT Teleconference
> : Y. Shirley Colloquium, U. Az.
> Fri 29
> 3:00 PM-5:00 PM: ANASAC Teleconference
> Sat 30
> Sun 01
> Mon 02
> 9:30 AM-10:30 AM: NA Project Office Staff Meeting
> 10:30 AM-11:30 AM: JAO IPT Telecon
> 11:30 AM-12:30 PM: NA DH telecon
> Tue 03
> 10:30 AM-11:30 AM: ASAC Teleconference
> Wed 04
> Thu 05
> 9:30 AM-11:00 AM: Management IPT Teleconference
> Fri 06
> Sat 07
> Sun 08
> ****************************** UPCOMING EVENTS
> ****************************** ALMA Calendar--see also
> https://wiki.nrao.edu/bin/view/ALMA/NAASC
>
> * 2-3 May - Understanding the Universe through IR and
> Submillimeter
> Astrophysics, Lexington, KY
> * 4-5 May 2005 -- WVR PDR, OSO, Gothenburg, Sweden
> * May 10-11 -- ESO Finance Committee meeting
> * May 17 -- 14:30UT Science IPT Telecon
> * May 26 -- 1500UT ALMA Board telecon
> * May 29-Jun 2 -- AAS Minneapolis
> * May 29-Jun 2--Band 4 (2mm), Band 8 (.6 mm), ACA
> Correlator reviews, Tokyo
> * June 5-6 -- ESO Council
> * June 12 -- 1-5pm ANASAC Face-to-Face CfA, Cambridge
> * JUN 13 - 16 Workshop on submillimeter wavelength
> astronomy in
> Cambridge. Registration deadline is APR 30. For more
> information, log onto the event website:
> http://cfa-www.harvard.edu/smast05.
> * June 21-22 -- ALMA Board Meeting, The Hague, Netherlands
> * 6-7 Jul - Front End IPT delta PDR, Garching
> ******************************* TECHNICAL NEWS
> ******************************* ALMA Memo # 517: Turbulence
> simulations of dry and wet phase fluctuations at
> Chajnantor. Part I: The daytime convective boundary layer.
> Authors: Alison Stirling, John Richer, Richard Hills, Adrian Lock
>
> Abstract: We have performed numerical simulations of the
> atmosphere for
> typical daytime convective conditions at Chajnantor, and
> derived the resulting
> wet and dry contributions to the atmospheric phase fluctuations. The
> simulations show that:
>
> - Dry phase fluctuations are concentrated in two layers --
> near to the
> ground, and at the temperature inversion. The wet
> fluctuations are concentrated
> at the inversion, while the total phase fluctuations are more
> uniformly
> distributed within the convective layer. This is because of
> significant
> positive and negative correlations between the dry and wet
> refractive index
> fluctuations.
>
> - The phase structure function is well described by a
> Kolmogorov turbulence
> spectrum on small scales, with a turn over on a scale of
> order the depth of
> the boundary layer.
>
> - The variation of total r.m.s. phase with elevation shows a
> dependence on
> the square root of air mass for the total phase, but the dry
> component shows
> a linear variation with air mass, and the wet component
> varies as air mass to
> the power 0.75. A scaling analysis has been used to relate
> the r.m.s. wet and
> dry phase fluctuations to the vertical profiles of
> temperature and water vapour
> so that an estimate of the phase fluctuations at Chajnantor
> can be obtained
> from radiosonde data.
>
> - Using this approach, the r.m.s. dry fluctuations along a
> single line of
> sight are found to be 100-200 microns at the 25-75 percentiles
> respectively, and the equivalent wet fluctuations are found
> to lie in the
> range 180-530 microns. The total r.m.s. path fluctuations
> were estimated
> to be 240-525 microns, and we have compared these estimates with
> independent measurements of the total r.m.s. phase obtained
> from interferometric measurements (Evans et al., 2003), and
> these show excellent agreement.
>
> - The correlation coefficient between total and wet phase
> fluctuations is
> estimated, and this is found to lie in the range 0.75-0.97 at the
> 25-75 percentiles. This suggests that, even under conditions where
> the dry phase fluctuations are expected to be at their
> highest, water vapour
> radiometry is expected to be able to remove a high percentage
> of phase
> fluctuations at Chajnantor.
>
> View a pdf version of ALMA Memo #517:
> http://www.alma.nrao.edu/memos/html-> memos/alma517/memo517.pdf
>
>
> *******************************ALSO OF
> INTEREST*******************************
> **************************************************************
> ****************
> Please send information for upcoming calendars by Friday
> evening of the preceding biweekly period to Jennifer
> Neighbours or Al Wootten via e-mail
> (jneighbo at nrao.edu or awootten at nrao.edu).
>
> The calendar will be issued between late Friday and sometime
> on Monday by e-mail to all NRAO scientific staff members and
> anyone else interested. A specific mailing list, alma-info,
> has been created for anyone wishing to receive it.
> Past issues are available at
> http://www.cv.nrao.edu/~awootten/mmaimcal/ALMACalendars.html
>
>
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