ALMA Project News Koh-Ichiro Morita ALMAJ Project Scientist

ALMA Project News Koh-Ichiro Morita ALMAJ Project Scientist 2008 Decmeber 5 ALMA-JT Science Meeting 1

Schedule 2002 2003 2004 2005 2006 2007 2008 2009 2010 • ALMA B (NA & EU) Agreement • Ground-breaking Ceremony • JP & NA & EU Agreement • 1 st ACA Antenna to Chile • 1 st Light in Chile • ACA Correlator to Chile • 1 st FE from EA FEIC to Chile • Start CSV Operation • Early Science Operation 2011 2012 • Full Operation 2013 2008 Decmeber 5 ALMA-JT Science Meeting 2

ALMA in Full Operation Phase • Image of antennas at high site. Atacama Compact Array（ ACA） System © ALMA/ESO/NAOJ/NRAO 2008 Decmeber 5 ALMA-JT Science Meeting 3

Antenna 2008 Decmeber 5 ALMA-JT Science Meeting 4

ACA 12 -m Antenna Status • Assembly of PM 01 ~ 3 (ACA#1 ~ 3) was completed until 2007 September and PM 04 was completed in 2008 March. • Many activities for tests & evaluations have been in progress. • First light test was conducted in 2008 February. • PM 03 will be delivered to JAO in December 2008. – Conditional Acceptance A way to transfer the operational and maintenance responsibility for a 1 st “Vendor antenna” from the responsible Ant-IPT to JAO, prior to its full completion, as this might take much more time and waiting with the transfer till all relevant requirements are met or demonstrated, would seriously delay progress of AIV and CSV. 2008 Decmeber 5 ALMA-JT Science Meeting 5

ACA 12 -m Antenna PM 04 antenna was arrived in Dec. 2007 and the assembly was completed in Mar 2008 Decmeber 5 ALMA-JT Science Meeting 6

ACA 12 -m Antenna First Light: Solar Observations 2008 Decmeber 5 ALMA-JT Science Meeting 7

Tests & Evaluations: High Accuracy Requirements • Surface Accuracy　 – 25 micron rms • Pointing Accuracy – 2”. 0 arcsec Absolute – 0”. 6 arcsec Offset Obs Condition • [-20℃ ~ +20℃] • 9 m /s wind in night time • 6 m /s wind in day time • High Altitude (5000 m) Operation Photo：ACA 12 -m Antenna #2 2008 Decmeber 5 ALMA-JT Science Meeting 8

ACA 12 -m Antenna Tests & Evaluations: Surface Accuracy l Verified the surface accuracy of 12 mm rms & stable over 4 months. 2008 Decmeber 5 ALMA-JT Science Meeting 9

Tests & Evaluations: Absolute Pointing l Absolute pointing error of 1. 4 arcsec. rms in all-sky optical pointing measurements (136 stars) Ø Nighttime Pointing: 1”. 84 rms without optical seeing Ø Daytime Pointing: 1”. 99 rms without optical seeing 1”. 4 rms in about 3 weeks after the best model was determined. PM 03 (ACA #2) antenna meets the ALMA spec not exceeding 2”. 0 rms under Primary Operating Condition. 2008 Decmeber 5 ALMA-JT Science Meeting 10

Tests & Evaluation Offset Pointing • Offset pointing errors meeting the spec from continuous tracking test and from multiple star measurements (15 min. ). Left: tracking error of 0”. 4 rms just after sunset time. – Nighttime Pointing performance • 0”. 49 rms (excluding optical seeing) ACA #2 antenna meets the ALMA spec not exceeding 0”. 6 rms under Primary Operating Condition. – Daytime Pointing Performance • 0”. 53 rms (excluding optical seeing) 2008 Decmeber 5 ALMA-JT Science Meeting 11

ACA 12 -m Antenna Tests & Evaluations • BE / FE Installation Test – Verify I/F • Transporter Electrical Testing – Test for mutual interlock, etc. 2008 Decmeber 5 ALMA-JT Science Meeting 12

ACA 7 -m Antennas Status • PPDR – Held in Sep 9 -11 at MELCO factory in Japan. • chaired by Masao Saito (ALMAJ) with 7 International Panel reviewers. • Proposed design was passed with 5 conditions and 12 AIs • #1 Antenna assembly in Japan is in progress. – Basic performance tests will be planned in early 2009. 2008 Decmeber 5 ALMA-JT Science Meeting 13

ACA Correlator 2008 Decmeber 5 ALMA-JT Science Meeting 14

ACA Correlator: Status • Assembly at AOS TB was completed in December 2007. • Firmware & software using the replica system has been conducted in Japan. • Acceptance tests will be started in early 2009. 2008 Decmeber 5 ALMA-JT Science Meeting 15

Status of FE Cartridge Developments Band-4 2008 Decmeber 5 Band-8 ALMA-JT Science Meeting Band-10 16

Status • Band-4 & Band-8 – 1 st cartridge assembly was completed. – Cryogenic acceptance tests are on-going. 2008 Decmeber 5 ALMA-JT Science Meeting 17

Status • Band-10 – Prototype design is in progress. – Mixer performance is improved by changing from Nb/Si. O/Nb to Nb/Al. N/Nb Junction Technology for High Jc. 2008 Decmeber 5 ALMA-JT Science Meeting 18

Various Construction Activities by ALMA-NA, EU 2008 Decmeber 5 ALMA-JT Science Meeting 19

Various Construction Activities by ALMA-NA, EU 2008 Decmeber 5 ALMA-JT Science Meeting 20

EA FEIC (Integration Center) EA FEIC Lab Layout 2008 Decmeber 5 ALMA-JT Science Meeting 21

l Contract EA FEIC Status – ASIAA contracted with ARL to operate EA FEIC (Sep. 2006). l Staff training – Lectures on key technology (cryogenic / microwave. . ) ü Study EDM documents related to FEIC. ü On-the-job Training at SMA, Hawaii (Jun 07) ü On-the-Job Training at NA-FEIC (Oct 07 -Apr 08). l EA-FEIC Lab establishment – Designed by ARL. ü Refurbished an existing room in the ARL campus; completed in Oct. 2007. l Start partial operation since March 2008. – Key test equipments were delivered. – Key FE components were delivered. 2008 Decmeber 5 ALMA-JT Science Meeting 22

EA FE #1 • Current Status – Expedited delivery of EA FE #1, which is the second ALMA FE at OSF, is highly desired for the project. – All the components were assembled and tested. • EA FE #1 is ready as an Engineering Model, and will be shipped out to Chile on Nov. 14. 2008 Decmeber 5 ALMA-JT Science Meeting 23

EA ARC 2008 Decmeber 5 ALMA-JT Science Meeting 24

High-level concepts for Science Operations • Observations will be done in service observing mode with flexible (dynamic) scheduling. • Observations 24 h/day interrupted by maintenance periods. • All observations are executed in the form of scheduling blocks (SBs), each of which contains all information necessary to schedule and execute the observations. • The default output to the astronomer are reliable images, calibrated according to the calibration plan. • The Joint ALMA Observatory (JAO) is responsible for the data product quality. • All science and calibration raw data are captured and archived. 2008 Decmeber 5 ALMA-JT Science Meeting 25

Science Operations: organization Enhanced User Services NAASC EU ARC nodes EU ARC (ESO) NA ARC JAO provides: Joint ALMA Observatory • Array operations • Scheduling of projects (DSO) • Execution of observations • Data quality assurance • Calibration plan maintenance EA ARC • Delivery of data to the archives 2008 Decmeber 5 NAOJ + ASIAA ALMA-JT Science Meeting The ARCs are the interfaces to the user community. The ARCs provide: • user support • delivery of data to the Pis • software tools for proposal preparation, observation preparation, and data reduction 26

Proposal preparation Phase 1 (OBSPREP) Data Flow Technical feasibility Proposal Review Committee (OBOPS) Proposal preparation Phase 2: SBs (OBSPREP) JAO EU ARC NA ARC Long-term queue EA ARC PI EU, NA, EA mirror archives Observations (Control, Correlator, Scheduler, Telcal, Quicklook, Executive) Archive (OSF+SCO) 2008 Decmeber 5 Quality control (OBOPS) Pipeline ALMA-JT Science Meeting OBOPS (data delivery) OBOPS (project tracking) 27

EA ARC: Organization 2008 Decmeber 5 ALMA-JT Science Meeting 28

Non-Core Functionalities • Basic (Executive Responsibility) – Software off-site development (CASA) – Maintenance and upgrade (software, antenna, receiver, correlator) – Education and Public Outreach • Non-Core Development – Joint archive of ALMA, Nobeyama 45 m + EA mm & submm telescopes – Data filler to CASA (for 45 m, SMA, …) – Original Catalog & Collaboration with JVO 2008 Decmeber 5 ALMA-JT Science Meeting 29

Personnel / Employment • Status – Manager: K. Tatematsu (50%) – Astronomers/scientists: M. Saito (50%), K. Tachihara, ASIAA Staffs (under discussion) – Admin assistant: T. Yamazaki – EPO-web: A. Ikeda (part-time) • Plan – 4 astronomers/scientists (faculty and postdocs): to be filled by JFY 2009 – DB/archive (5 persons): via contract with company or contract workers 2008 Decmeber 5 ALMA-JT Science Meeting 30

ARC Offices • Rooms in the existing building – Offices in three distributed buildings – 128 m 2 computer server room with 110 k. VA power supply and air conditioning; for archive and data reduction system • New building request (2000 m 2) @ JFY 2009 – MEXT (Ministry of Education, Culture, Science, Sports) –budget request Ministry of Finance – Mainly for EA-ARC core functionalities (face-to-face support etc) 2008 Decmeber 5 ALMA-JT Science Meeting 31

ARC 2008 Decmeber 5 ALMA-JT Science Meeting 32

Archive/Data Reduction System • 2008 Sep: Prototype archive (5 TB effective) – 45 m data for ALMA-J members – Antenna test/commissioning data – ALMA archive system (NGAS) practice • JFY 2009: archive & data reduction computers – Servers for CASA 2008 Decmeber 5 ALMA-JT Science Meeting 33

Tutorial / Workshop • CASA Tutorials: No. 1 (2008 Jan), … • ARC workshop • ARC users meeting 2008 Decmeber 5 ALMA-JT Science Meeting 34

www. alma. info The Atacama Large Millimeter/submillimeter Array (ALMA), an international astronomy facility, is a partnership among Europe, Japan and North America, in cooperation with the Republic of Chile. ALMA is funded in Europe by the European Organization for Astronomical Research in the Southern Hemisphere, in Japan by the National Institutes of Natural Sciences (NINS) in cooperation with the Academia Sinica in Taiwan and in North America by the U. S. National Science Foundation (NSF) in cooperation with the National Research Council of Canada (NRC). ALMA construction and operations are led on behalf of Europe by ESO, on behalf of Japan by the National Astronomical Observatory of Japan (NAOJ) and on behalf of North America by the National Radio Astronomy Observatory (NRAO), which is managed by Associated Universities, Inc. (AUI). 2008 Decmeber 5 ALMA-JT Science Meeting 35