alma future development - nobeyama radio...
TRANSCRIPT
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Scope• In order to maintain ALMA as the state-‐‑‒of-‐‑‒the-‐‑‒art facility over the course of its projected life of 30+ years, continuing technical upgrades and development of new capabilities are essential.
• We need to think about > 10 years, starting now!
Qi et al. Maercker et al. Hatsukade et al. Herrera et al.
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Scope
• ALMA Future Development is one of the options that the community can chose from, among various other options that we are facing.
• Contents;1. Overview of ALMA development, 2. Ongoing development studies/projects3. Future direction for EA ALMA
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Scope of ALMA development• ALMA development can be:
– Complete new additions to the Array
– Extension of existing capabilities; (more sensitivity, wider bandwidth, improved image quality, better dynamic range, etc)
– Improvements to existing systems (in hard-‐‑‒ or software)
– Improved infrastructure that reduces risks, increases availability, makes operation easier/less expensive.
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EA studies/projectsProject PI
Band 1 (35-‐50GHz, up to 52GHz) C. Kemper, P. Ho (ASIAA)
Ar@ficial Noise Source at AOS H. Kiuchi (NAOJ)
Band 11 studies Y. Uzawa (NAOJ), M. Saito (JAO)
Front face2013 July 8 2013 EA ALMA Development Workshop 8
Physical optics analysis�• GRASP analysis and Gaussian beam fitting
– Slight design modification to fix a small phase distortion could yield good optics for Band 11�
Freq (GHz)� 868� 1300� 1500�Gaussicity (%)� 99.964� 99.968� 99.967�
w0x (mm)� 2.033� 1.358� 1.177�w0y (mm)� 2.033� 1.358� 1.177�
z (Focus position, mm)� -0.466� -0.490� -0.495�Pointing angle X (deg)� 0� 0� 0�Pointing angle Y (deg)� 0.975� 0.967� 0.965�
Simulated by A. Gonzalez�
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Band 1 timeline• July 2013
– Preliminary Design Review (PDR)• Late 2013/early 2014
– Band 1 production proposal to ADSC and ALMA board• April and December 2014:
– Test readiness review (TRR)– Specification readiness review (SRR)
• December 2014 -‐‑‒ July 2015:– Production cartridges #1 -‐‑‒ #3
• July 2015: – Critical Design & Manufacturing Readiness Review (CDMR)
• July 2015-‐‑‒2018– Production cartridges #4 -‐‑‒ #73
• July 2018: – Delivery cartridge #73
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EU studies/projectsStudy/project Deliverable Note
Band 5 (163-‐211 GHz) Design study -‐> full produc@on
Study completed in Feb 2012, comple@on 2017
2SB for Band 9 prototype Study completed Apr 2012
ALMA phasing project Science case, technical defini@on etc
Design and components for Band 2 (68-‐90 GHz) + 3 (84-‐116 GHz)
Science case, study of key technology, design
Start June 2012 (for 1.5 yr)
Supra-‐THz Science case, study of the weather /instrument
Start Nov 2012 (for 1.5 yr)
Cost and feasibility of upgrading the bandwidth
16 GHz or more
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Band 5 (163 – 211 GHz)• Science
– [CII] in z=8-‐‑‒10 and high-‐‑‒J CO at high-‐‑‒z– Water in the local universe
• Full production proposal prepared as part of the study – Approved Apr 2012
• Full production started on Feb 2013• 67 cartridges to be delivered by 2017
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NA studiesStudy PI
2nd Genera@on Receiver for Band 6 A. Kerr (NRAO)
Design study of Band 2 Cartridges E. Bryerton (NRAO)
Ultra-‐wideband Quantum Limited Amplifiers D. Woody (Caltech)
Unleashing Large Dataset Science L. Mundy (Maryland)
A Visualiza@on Portal for ALMA Data E. Rosolowsky (UBC)
ALMA Band 1 Receiver Development (with EA) P. Ho (ASIAA)
Mm/submm VLBI with ALMA J. Kern (NRAO)
Increase the ALMA data rate B. Glendenning (NRAO)
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NA projectsProject PI
Band 5 LO produc@on E. Bryerton (NRAO)
Fiber Op@c Connec@vity J. Ibsen (JAO)
ALMA Phasing Project (APP) S. Doeleman (MIT, Haystack)
APP Implementa@on S. Doeleman (MIT, Haystack)
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Future of the Future Development• EU Call for studies (June, 2013)
– Deadline Sept 2, 2013. Review in Fall.– Studies kick-‐‑‒off 2014, lifecycle 2014-‐‑‒2016
• NA Call for studies/projects (May 1)– Total $1M, projects may seek up to $200K– Deadline: July 12
• East Asia– Focus on longer term large scale improvements of ALMA, rather than small scale upgrades
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Future of ALMA Future Development
• EA Development Workshop; July 8-‐‑‒9 in Mitaka• 69 participants (half from the community)
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East Asian Community Requests for ALMA
• Wider field of view (Multi-‐‑‒beam receiver)• Higher sensitivity (more antennas, wider IF, more quantization)
• High fidelity imaging • Higher angular resolution (~∼200-‐‑‒300 km baselines)
• High dynamic range• etc
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Future direction
• Identify EA-‐‑‒led development for the next 10 years, based on the science demands, technical feasibility, cost impact.
• A dedicated working group will be formed in EA, steered by the coordination and the leadership of the Japan ALMA Science Advisory Committee (JSAC).
• Coordination with other regions is the key, and the regional executives will serve as the interface.
• Science demand from the community is the most important driver for future development of ALMA!