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

2008 Decmeber 5 ALMA-JT Science Meeting 1

ALMA Project News

Koh-Ichiro MoritaALMAJ Project Scientist


Schedule

• ALMA B (NA & EU) Agreement• Ground-breaking Ceremony• JP & NA & EU Agreement

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

•1st ACA Antenna to Chile•1st Light in Chile•ACA Correlator to Chile•1st FE from EA FEIC to Chile

• Start CSV Operation• Early Science Operation

• Full Operation


© ALMA/ESO/NAOJ/NRAO

ALMA in Full Operation Phase

• Image of antennas at high site.

Atacama Compact Array（ ACA ） System


Antenna


ACA 12-m Antenna Status

• Assembly of PM01 ~ 3 (ACA#1 ~ 3) was completed until 2007 September and PM04 was completed in 2008 March.

• Many activities for tests & evaluations have been in progress.

• First light test was conducted in 2008 February.

• PM03 will be delivered to JAO in December 2008.– Conditional Acceptance

A way to transfer the operational and maintenance responsibility for a 1st “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.


ACA 12-m Antenna

PM04PM04 antenna was arrived in Dec. 2007 and the assembly was completed in Mar 2008.


ACA 12-m AntennaFirst Light: Solar Observations


Tests & Evaluations: High Accuracy Requirements

• Surface Accuracy 　– 25 micron rms

• Pointing Accuracy– 2”.0 arcsec Absolute – 0”.6 arcsec Offset

Photo： ACA 12-m Antenna #2

Obs Condition•[-20 ℃ ~ +20℃]•9 m /s wind in night time•6 m /s wind in day time•High Altitude (5000m) Operation


ACA 12-m Antenna

Tests & Evaluations:Surface Accuracy

Verified the surface accuracy of 12 m rms & stable over 4 months.


Tests & Evaluations: Absolute Pointing

Absolute pointing error of 1.4 arcsec. rms in all-sky optical pointing measurements (136 stars)Nighttime Pointing: 1”.84 rms without optical seeingDaytime Pointing: 1”.99 rms without optical seeing

1”.4 rms in about 3 weeks after the best model was determined.

PM03 (ACA #2) antenna meets the ALMA spec not exceeding 2”.0 rms under Primary Operating Condition.


Tests & EvaluationOffset Pointing

• Offset pointing errors meeting the spec from continuous tracking test and from multiple star measurements (15 min.).

– Nighttime Pointing performance• 0”.49 rms (excluding optical seeing)

– Daytime Pointing Performance• 0”.53 rms (excluding optical seeing)

ACA #2 antenna meets the ALMA spec not exceeding 0”.6 rms under Primary Operating Condition.

Left: tracking error of 0”.4 rms just after sunset time.


ACA 12-m Antenna

Tests & Evaluations

• BE / FE Installation Test– Verify I/F

• Transporter Electrical Testing– Test for mutual interlock, etc.


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 ear

ly 2009.


ACA Correlator


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.


Status ofFE Cartridge Developments

Band-4 Band-8 Band-10


Status

• Band-4 & Band-8– 1st cartridge assembly was completed.– Cryogenic acceptance tests are on-going.

Band 4 SN01 Cartridge 4- 8GHz integrated Trx

0

10

20

30

40

50

60

70

80

90

100

125 130 135 140 145 150 155 160 165

Signal Frequency [GHz]

80% band spec (less than 51K) 20% band spec (less than 81K)Pol 0- USB Pol 0- LSBPol 1- USB Pol 1- LSB

0

50

100

150

200

250

300

350

400

380 400 420 440 460 480 500 520

Noi

se T

empe

ratu

re [

K]

Frequency [GHz]

Polarization 0


Status

• Band-10– Prototype design is in progress.– Mixer performance is improved by changing from Nb/SiO/

Nb to Nb/AlN/Nb Junction Technology for High Jc.

750 800 850 900 9500

200

400

600

800

1000

1200

Co

rre

cte

d T

rx (

K)

LO frequency (GHz)

IF: 4-12 GHz

230 K345 K


Various Construction Activitiesby ALMA-NA, EU


Various Construction Activitiesby ALMA-NA, EU


EA FEIC (Integration Center)

EA FEIC Lab Layout

受信機コンポーネント開発場所

サイト


EA FEIC Status Contract

– ASIAA contracted with ARL to operate EA FEIC (Sep. 2006).

Staff training– Lectures on key technology (cryogenic /

microwave..) Study EDM documents related to FEIC. On-the-job Training at SMA, Hawaii (Jun 07) On-the-Job Training at NA-FEIC (Oct 07-Apr 08).

EA-FEIC Lab establishment– Designed by ARL.

Refurbished an existing room in the ARL campus; completed in Oct. 2007.

Start partial operation since March 2008.– Key test equipments were delivered.– Key FE components were delivered.


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.


EA ARC


High-level concepts for Science Operations

• Observations will be done in service observing mode with flexible (dynamic) scheduling.

• Observations 24h/day interrupted by maintenance periods.• All observations are executed in the form of scheduling blocks (SB

s), 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.


Science Operations: organization

Joint ALMA Observatory (DSO)

NA ARCEU ARC (ESO)

EA ARC

NAOJ + ASIAA

EU ARC nodes

NAASC

Enhanced User Services

The ARCs are the interfacesto the user community. The ARCs provide: • user support• delivery of data to the Pis• software tools for proposal preparation, observation preparation, and data reduction

JAO provides:• Array operations• Scheduling of projects• Execution of observations• Data quality assurance• Calibration plan maintenance• Delivery of data to the archives


Data FlowTechnical feasibilityProposal Review

Committee (OBOPS)

Proposal preparationPhase 2: SBs (OBSPREP)

Long-term queue

Observations(Control, Correlator, Scheduler, Telcal,

Quicklook, Executive)

Quality control (OBOPS)Pipeline

Proposal preparation Phase 1 (OBSPREP)

Archive (OSF+SCO)

JAOEA ARC PI

EU, NA, EA mirror archives

NA ARC

EU ARC

OBOPS (data delivery)

OBOPS(project tracking)


EA ARC: Organization

ARC MANAGER

ADM ASSISTANT

SCIENCESERVICE

TEAM

DATASERVICE

TEAM

TECHNICALSERVICE

TEAM

SOFTWARESERVICE

TEAM

TAIWAN CONTACT

EPOTEAM


Non-Core Functionalities

• Basic (Executive Responsibility)

– Software off-site development (CASA)– Maintenance and upgrade (software, antenna, rece

iver, correlator)– Education and Public Outreach

• Non-Core Development– Joint archive of ALMA, Nobeyama 45m + EA mm &

submm telescopes– Data filler to CASA (for 45 m, SMA, …) – Original Catalog & Collaboration with JVO


Personnel / Employment

• Status– Manager: K. Tatematsu (50%)– Astronomers/scientists: M. Saito (50%), K. Tachihara, A

SIAA Staffs (under discussion)– Admin assistant: T. Yamazaki – EPO-web: A. Ikeda (part-time)

• Plan– 4 astronomers/scientists (faculty and postdocs): to be fil

led by JFY2009– DB/archive (5 persons): via contract with company or c

ontract workers


ARC Offices• Rooms in the existing building

– Offices in three distributed buildings– 128 m2 computer server room with 110 kVA power supp

ly and air conditioning; for archive and data reduction system

• New building request (2000 m2) @ JFY2009– MEXT (Ministry of Education, Culture, Science, Sports)

–budget requestMinistry of Finance– Mainly for EA-ARC core functionalities (face-to-face sup

port etc)


ARC


Archive/Data Reduction System

• 2008 Sep: Prototype archive (5TB 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


Tutorial / Workshop

• CASA Tutorials: No. 1 (2008 Jan), …

• ARC workshop

• ARC users meeting


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 1 ALMA Project News Koh-Ichiro Morita ALMAJ Project Scientist.

Documents

almajt science meeting

antenna slide

aca antenna

alma spec

almaesonaojnrao alma

operation slide

antenna tests evaluations

antenna pm04 pm04 antenna