***************************************************************************** DRAFT LEVEL 3 MILESTONES ========================= A. Configuration ================= - Level 2: Oct. 2002: J. Conway Plan for compact and intermediate configurations finalized No Level 3 needed since plan delivered by John Conway and approved by JAO (see ALMAEDM). There will be iteration on these positions as engineers incorporate them into their plans. - Level 2: June 2003: M. Holdaway Plan for Y+ configuration finalized, in the sense that the iterations with the site engineers will be complete by this time. * Level 3: March 2003? Logic of antenna motion investigated, including constraints from scheduling and stringency. The logic of antenna motion will be confronted with site characterization data to refine it. - Level 2: June 2004 J. Conway Plan for Early Science configurations complete * Level 3: Feb 2004 Draft plan for Early Science configurations B. Calibration =============== - Level 2: February 2003 S. Guilloteau, Butler Review of calibration requirements with science examples complete. Includes: - Phase - Amplitude - Bandpass - Baselines - Polarization - Illumination Offset - Opacity - Decorrelation Correction - Pointing and Focus * Level 3: December 2002 Draft of requirements document ready for reviews S. Guilloteau This is at the level of the Project Book. - Level 2: June 2003 J. Pardo and others Review of technical specifications for calibration items complete: WVR, FTS, weather station * Level 3: January 2003 J. Pardo ATM software available. * Level 3: March 2003 Draft specifications ready for reviews. There will be separate specs for the ATF Interferometer. - Level 2: September 2003 B. Butler Calibration strategy finalized * Level 3: February 2003 A. Bacmann Draft of bandpass analysis plan. Includes discussion of the limitations of bandpass calibration using astronomical sources. * Level 3: March 2003 Draft of phase calibration plan - check fast switching performance of antennas M. Holdaway with antenna evaluation group (AEG) - WVR/atmospheric modeling w/ATM J. Pardo/ J. Richer? E.g. are three channels enough? - Links with other instruments (level 4) * Level 3: March 2003 Draft of amplitude/single dish calibration: - dual load subreflector S. Myers --Evaluation of Berkeley experience Welch/Bock/Mangum --Baseline design finished Jan. 2003, need to evaluate this design --Implications on operations/data acquisition Myers/Glendenning (with receiver IPT & software IPT & backend IPT) Synchronizing phase with observations on 64 antennas at once. - semi-transparent vane S. Guilloteau Test plan in lab finished Jan. 2003 by M. Carter) Test plan for 30m - need for hot load? (Jan. 2003) J. Mangum/S. Guilloteau - absolute calibrators Science IPT discussion - Uranus & asteroids B. Butler/ - MWC 349 S. Guilloteau - absolute techniques B. Butler/J. Welch 3mm horn to be built, measured at Grenoble range, or perhaps Ga. Tech. - link with other instruments EU Workshop December discussion mm, SOFIA, Herschel/HIFI, .... - decorrelation correction M. Holdaway look at what is required, simulating with phase screen, fast switching - simulations, total power stability J. Pety, Holdaway 1/f noise, saturation, total power memo (with receiver IPT) * Level 3: March 2003 Myers Review SSR plan for all phase calibration techniques complete * Level 3: March 2003 J. Conway Draft of Baselines calibration plan (with antenna IPT and software IPT) Including consideration of phase, delay, and use of wideband to accuraely measure delay. * Level 3: March 2003 Delay calibration (too early?) Bacmann/Guilloteau Operational issues how many antennas in calibration array. * Level 3: March 2003 (or later...) Draft of Pointing and Focus calibration J.Mangum/ - ATF results J. Cernicharo - consolidation of ideas - Illumination offset * Level 3: March 2003 Draft of Operation Model for calibration Project - sequence of moves and calibrations scientists (software IPT, site/operation IPT) - some dynamic scheduling * Level 3: April 2003 M. Holdaway/ Draft of Polarization calibration S. Myers Linear/circular Device needs and description (what widget at what wavelength) * Level 3: June 2003 J. Conway Next draft of antenna position calibration plan (with antenna IPT and software IPT) - Geometric model (tides, antenna motions, ...) - frequency of solutions - bootstrapping new antenna pads (Sept. 2003?) * Level 3: 30 June 2003 B. Butler Complete draft report on calibration strategy for review * Level 3: Q3 2003 J. Mangum Test plan for amplitude calibration devices on ATF * Level 3 August 2004 ALMA Team First fringes ATF - Level 2: September 2004 ? Selection of WVR strategy We need a calibration group meeting to discuss this further. How and when do we use the WVR; is it used as a tipper, tau accuracy, use as function of location on site. * Level 3: December 2002 Draft technical aspects WVR R. Hills (with Receiver IPT) * Level 3: March 2004 Holdaway/Pardo Draft WVR software implementation plan Including capabilities as tau-meter - Level 2: December 2004 Butler Review of tests of calibration strategies on prototype interferometer complete with evaluation receivers. * Level 3: June 2004 Holdaway Comparison of results of beam switching and fast switching on prototype antennas Tests of OTF motion and antenna position readout * Level 3: June 2004 Characterization of prototype antenna pointing under varying wind conditions - Level 2: May 2005 Butler Review of tests of calibration strategies on Interferometer at ATF complete with ALMA prototype receivers. How do the results of these tests affect plans for ALMA mosaicing and submillimeter imaging * Level 3: January 2005 Tests of dynamic scheduling on interferometer Holdaway at ATF. * Level 3: March 2004 J. Mangum Plan for interferometry tests at ATF complete * Level 3: Aug 2004 J. Mangum Start of interferometry tests at ATF C. ACA definition ================== This is not part of the baseline bilateral plan, but the science IPT will probably be asked to do some work * Level 3: March 2003 Draft plan for ACA Establishing an plan to achieve goals (flux-recovered imaging at all ALMA bands) - surface error simulations M.Holdaway - configuration optimization J. Pety/J. Conway/ T. Hasegawa - 1 or 2 subarrays to cover extreme zenith angles K-I.Morita + student * Level 3: Q3 2003 Demonstrate that the proposed plan does achieve the goals, and show implementation of the plan Morita, Project Scientists This also involves other IPTs: Antenna, systems, receiver, backend and others Calibration of the ACA D. Operations plan ================== - Level 2: December 2003 Project scientists Science aspects of operations plan complete, including core functions of Regional Support Centers * Level 3: June 2003 Project scientists/ ASAC Draft of science aspects of operations plan, including staffing plan E. Science Commissioning and Science Verification -- n.b. Systems assures specifications are met during integration, science confirms afterwards. ================ - Level 2: June 2005 Project scientists Science verification plan finalized * Level 3: December 2003 Mangum, Dutrey, First ideas on verification plan Holdaway, Project scientists * Level 3: June 2004 Draft plan for science verification including separate plans for each receiver band, Mosaicing Czar to oversee tests for mosaicing verification. - Level 2: June 2007 Project Scientists Science verification of ALMA early science array with Bands 3 and x complete *** assumes Band 3 and at least one other Band commissioned*** * Level 3: TBD - Level 2: xxxx 2008: Science verification of ALMA Bands y and z complete *** verification of any bands not included in early science array *** * Level 3: TBD F. Imaging ================================= - Level 2: xxxx 2009: Science verification of ALMA imaging quality complete *** need ALMA with at least 32 antennas *** * Level 3: June 2005 Review existing algorithms and define what is needed in terms of algorithms Optimization of existing algorithms and development of new ones. * Level 3: June 2006 Imaging - Calibration - Pipeline Integration Integration of the astronomical imaging goal with the proposal process, scheduling process, and the imaging pipline. * Level 3: 2008 Verification of mosaicing process with ALMA G. Site Characterization ================================= * Level 2 - January 2006 Radford/L. Nyman Implementation of ALMA Site Characterization Instrumentation * Level 3 - March 2003 Integration of NA and EU data into uniform and easy-to-access forms * Level 3 - March 2003 Radford/Nyman Description of Current and Past Instruments, Data, Analysis Including description of data location and format * Level 3 - ???? Sonde data analysis Butler? Description of sonde data and analysis. An ALMA Memo will describe the sonde campaigns, summarize results and draw conclusions about atmospheric structure above the site. Recommendations for future needs or conclusion of the campaigns. * Level 3 - ???? 183 GHz data analysis ???? Analysis of 183 GHz radiometer data from Chajnantor. Conclude work of Delgado which included a comparison to the Site Testing Interferometer data. * Level 3 - Weather Station data analysis Otarola? Correlation of surface weather with opacity and other measurements Hygrometer data analysis and comparison to opacity and other data Distant weather stations Calama data analysis (30 years of surface data exist) OSF site station installation (ASP) Decision on Cerro Negro station installation * Level 3 - December 2002 Site Testing Interferometer data Robson? Analysis to compare with sonde data and to infer height of turbulent layer Determination of contamination by ionosphere * Level 3 - June 2003 RFI Environment at Chajnantor Carla Beaudet/Galen Watts (NRAO/GB) The measurements for this are going to be done in December 2002. * Level 3 - Continuing A. Erasmus Acquisition and analysis of mesoscale climate models * Level 3 - March 2003 Site wind flow pattern modeling D. DeYoung Hydrodynamical modeling done at NOAO. * Level 3 - Ongoing Further characterization S. Radford/L. Nyman New Site Characterization instrumentation H. Science Software Requirements ================================= The SSR reports to the Software IPT and thus has to follow their milestones. However, we feel that it is important that the SSR liaison scientists report regularly to the Science IPT as well. Do we want to set or copy any Level 3 milestones relevant to science?