ALMA. ALMA Construction Status. Mark McKinnon. ALMA-NA Project Director/Manager September 28, 2011

Transcription

1 Construction Status Mark McKinnon -NA Project Director/Manager September 28, 2011

2 Antennas at AOS 18 antennas August 13, antennas August 6, 2011 Total of 44 antennas at the site (21NA, 13 EA, 10 EU) Total of 27 antennas accepted (16 NA, 8 EA, 3 EU) ANASAC, September 28-29,

3 Vertex Antennas 21 Vertex antennas in Chile 16 of these accepted 5 most recent antennas fully accepted in 30 weeks; demonstrates ability to deliver antennas at targeted rate of 1 every 6 weeks 5 in various stages of assembly at the SEF: DV17: Servo & HVAC testing completed. Pointing underway DV18: Panel installation, photogrammetry, & electrical work complete. Servo & HVAC testing underway. DV19: Installation of platforms, servo cabinet, & HVAC complete. BUS assembled & mated to Invar cone. Panel installation underway. DV20: pedestal on foundation since August 12 DV21: arrived at SEF on September 10. To be installed on foundation this week. ANASAC, September 28-29,

4 EU Antennas 10 antennas in Chile; 7 assembled 3 antennas conditionally accepted 3 accepted in 14.5 weeks (1 every 4.8 weeks) 4 assembled and in various stages of vendor tests (AEM4-AEM7) 2 in assembly (AEM8 & AEM9) 1 on antenna pad (AEM11). 4 in transit. ANASAC, September 28-29,

5 EA Antennas All 4 12m antennas conditionally accepted 7m antennas (9 of 12 in Chile) 4 antennas conditionally accepted (CM04 on July 28) 2 undergoing tests (CM05 & CM06) 3 undergoing final adjustments & servo tests (CM07-CM09) Remaining three 7m in transit from Japan (CM10-CM12). ANASAC, September 28-29,

6 Operations Support Facility NA antennas EA antennas EU antennas OSF Technical Building Antenna acceptance testing ANASAC, September 28-29,

7 Optical Pointing Telescope 2 prototype OPTs used to verify pointing performance of first 9 NA antennas. Now used for EU antennas. 2 (of 6) production units now used at AIV and by NA Routine performance not at required level due to temperaturedependent image drift. Could delay antenna acceptances Existing and revised designs under evaluation by consultant Motion essentially eliminated by reducing OPT heat load Final report nearing completion Production to resume after completion of successful review in October. ANASAC, September 28-29,

8 Nutator Chopping secondary used for total power measurements Delayed due to issues with servo control of secondary and stiffness of mirror back plate ASIAA improved structural stiffness Unit #1 in Green Bank for servo optimization Test Readiness Review to be held in late September; user documents written Residual torque measurements underway in Taiwan Delta-CDR scheduled for early October Then ship nutator unit #1 from Taiwan to Chile for engineering tests 5 Hz, 500 throw ANASAC, September 28-29,

9 Site AOS Roads Total road distance to be built under AOS roads contract is ~67km. 33.9km (51%) of roads have been completed; overall, 89% complete AOS Utilities Rough cut of roads to all stations complete Compaction, grading, and finishing underway. Roads & utilities delayed by ~2 months due to bad weather Roads to be complete December 2011 Utilities work estimated at 45% complete Trenching and cable installation for central cluster completed Expect pads for Extended Array to be available by end of September Utilities to be complete March 2012 Permanent power supply (EU) to be operational in November ANASAC, September 28-29,

10 AOS Utilities Installation Photo Credit: NRAO/AUI/NSF, Carlos Padilla Acknowledgement: General Dynamics C4 Systems ANASAC, September 28-29,

11 AOS Roads & Utilities ANASAC, September 28-29,

12 Front Ends 26 FEs (12 EA, 10 NA, 4 EU) in Chile 4 in transit (1 EA, 1 NA, 2 EU) FEICs can deliver 1 FE per month FE component delivery on schedule Initial suite of frequency bands Band 3: GHz Band 6: GHz Band 7: GHz Band 9: GHz Assembled FE in cryostat ANASAC, September 28-29,

13 Front End Service Vehicle - I FESVs (2) are used to transport FEs to/from AOS antennas/osf FESV1 In-house acceptance (PAI) for FESV1 held in Taiwan on June Shipped to Chile on July 5. Arrived August 16. On site acceptance (PAS) held at OSF on August Recommended for conditional acceptance Conditions include documentation & operator training FESV press release at FESV2 PAI scheduled for October 7 Expected arrival in Chile in November; PAS in December ANASAC, September 28-29,

14 FESV - II ANASAC, September 28-29,

15 FESV - III Vertex Melco-12 AEM Melco-7 ANASAC, September 28-29,

16 Front End Handling Vehicle Custom cart (3) designed to move FEs between the FESV and antennas Designed and fabricated in Chile Prototype delivered to OSF for FESV PAS on August 29 Minor modifications needed to maneuver in receiver cabin of EU antenna (6 weeks) ANASAC, September 28-29,

17 Backend Completed installation and testing of final stage of central local oscillator article (CLOA) in August Brings CLOA to full complement for 66 antennas & 4 sub-arrays Final PAS held on September 23 All backend deliverables completed in September ANASAC, September 28-29,

18 Correlator 3 correlator quadrants at AOS Quadrants 1 & 2 in routine use by AIV & CSV PAS for Q3 completed in September 2010 Q4 remains at the NTC in Charlottesville to be used for software tests by computing IPT PAI completed September 6 Operational at AOS in July 2012 Correlator for Atacama Compact Array (ACA) is installed and tested. Acceptance completed January 2011 ANASAC, September 28-29,

19 Computing Correlator software testing achieved full data rate of 60 MB/s. Version R8.1 of the Software was released in early July for routine use by CSV CIPT s annual CDR (for R9.0) held in Santiago on July 4-8 Testing of the single board computer (SBC) for the antennas was done at the OSF and AOS in support of the SBC final procurement. Procurement made CASA V3.1 released. Addresses speed/performance issues Testing of CASA parallel imaging on new computer cluster improved processing speed by a factor of 8. (with EVLA) First version of the Dynamic Scheduling Algorithm agreed with science operations and implemented ANASAC, September 28-29,

20 Changes in Project Personnel Gary Parks is new JAO Project Manager (PM) With JPL since Most recently flight system manager for Phoenix Mars Lander. Previously PM for Herschel and Planck space missions Technical background in RF, remote sensing, and VLBI Michael Thorburn became new Head of the Department of Engineering (ADE) in July Was Director of Engineering for Antenna Subsystems at Loral. Previously PM for the Cassini Radio Science Program at JPL. Rich Lacasse became new lead of the NA Correlator IPT in August With AUI/NRAO since Senior Engineer in IPT since Art Symmes became new lead for the NA Antenna IPT in February NRAO civil/structural engineer on GBT and antennas. Was IPT deputy lead. ANASAC, September 28-29,

21 Schedule High Level View ITEM EXPECTED* OCCURRED Phase closure with 3 antennas at AOS Nov 2009 Nov 2009 Start commissioning and science verification Nov 2009 Jan antennas in array Aug 2010 Sep 2010 First call for proposals Dec 2010 Mar 2011 Central cluster stations complete Mar 2011 May antennas in array Feb 2011 Aug 2011 Start early science (16 antennas) Jul 2011 Sep 2011 inauguration (50 antennas) Jan 2013 Mar antennas in service Jul 2013 Sep 2013 Critical path: EU antennas & FEs, and antenna integration & verification * Expected dates as presented to ANASAC Sep 2010 ANASAC, September 28-29,

22 Budget: NA Contingency Contingency for North America $15.79M balance at end of July % of the uncommitted NA budget Liens on NA contingency (as of August 2011) From pending change requests total $6.52M Not all CRs will be approved, but more can develop Sum of weighted risks from recent update to risk register is $5.72M Financial situation for EU is similar ANASAC, September 28-29,

23 Development operations plan and budget makes provisions for future developments to enhance s capabilities. Actions to organize development: Development management plan written (under revision). Addresses: Proposal evaluation & measures to avoid NRAO conflict of interest Program management (budget, schedule, design reviews, acceptance) Development workshop held in Charlottesville on March Good NA community participation, e.g. SMA, CARMA, HIA, NRL Call for proposals for development studies to be issued soon Other Executives sponsoring similar activities JAO and Executives completed development principles document to describe how development activities will be coordinated. ANASAC, September 28-29,

24 The Atacama Large Millimeter/submillimeter Array (), an international astronomy facility, is a partnership among Europe, North America and East Asia in cooperation with the Republic of Chile. is funded in Europe by the European Organization for Astronomical Research in the Southern Hemisphere (ESO), in North America by the U.S. National Science Foundation (NSF) in cooperation with the National Research Council of Canada (NRC) and the National Science Council of Taiwan (NSC) and in Japan by the National Institutes of Natural Sciences (NINS) in cooperation with the Academia Sinica (AS) in Taiwan. construction and operations are led on behalf of Europe by ESO, on behalf of North America by the National Radio Astronomy Observatory (NRAO), which is managed by Associated Universities, Inc. (AUI) and on behalf of East Asia by the National Astronomical Observatory of Japan (NAOJ). The Joint Observatory (JAO) provides the unified leadership and management of the construction, commissioning and operation of. ANASAC, September 28-29,