Cycle 5
• The Observatory intends to meet steady state goals of a minimum of 56 antennas (daytime) and >4200 hours of baseline array time delivered to PIs. Efforts to arrive at Steady State Operations efficiency goals will build on the previous year, i.e., system stability, subarrays and faster return to service following weather events.
• 5 days per week on average should be used for 24 hour PI science.
ARC report: ALMA Cycles 3-4
Status
NAOJ Chile Observatory 2017 Apr 5
(Ken Tatematsu, EA ARC Manager)
2
Cy 3 Time on sky per executive (priority =
ALL, array config = BL12)
• CL EA EU NA NA_EA OTHER
• QA0_PASS (h) 228.4 607.1 843.2 939.8 5.1 44.9
• QA0_PASS (%) 8.6 22.8 31.6 35.2 0.2 1.7
• QA2_(SEMI)PASS (h) 193.8 532.6 743.9 795.9 5.1 44.9
• QA2_(SEMI)PASS (%) 8.4 23.0 32.1 34.4 0.2 1.9
observed vs delivered (OUS) 2017-2-1
4 mo
900 OUS
backlog=900 OUS 22.5%200 OUS for EA
(cf. average EA delivery 20-30 OUS/mo, including JAO reduction)
observed vs delivered (OUS) 2017-4-3
3 mo
300 OUS
JAO pipeline got stuck
• Original idea: JAO do all pipeline, and ARCs manual reduction for non-standard + alpha
• Current plan: all of JAO + three ARCs do calibration+ imaging pipeline
• ALMA-J computing prepares 8 more pipeline machines in addition to current 6 pipeline machines
• Typically ~3 days per SB including calibration and imaging. Most of them needed a second pipeline run after flagging.
• Each of JAO, ARC is requested to add ~ 2 FTE more (EA accepted
4
Cy 4 Proposal Review
Distribution of Cycle 4 proposals by region
Cy3 EA=3.1 NA=3.8 Cy3 EA=295.5 NA=465.5
Average EA=6.4hr NA=6.6hr
Number of proposals and Grade A & B
projects by proposal type
Cy 4 Grade A
• EA 16 programs out of out of 135 (12%)
• Regional balance is not taken into account for Grade A
• It is only taken into account for A+B
• JAO did not take into account regional balance for Grade C, and EA Grade C was small in number. Masa Hayashi
(Directors Council) asked to increase it. Finally more EA Grade C were added.
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Distribution of execution time for Grade A
and B projects by region
Distribution of execution time for Grade A
and B projects by science category
Distribution of execution time for Grade A
and B projects by receiver band
Number of proposals submitted as a function
of the 12-m Array execution time, excluding
Large Proposals.
The median requested 12m time per proposal is 5.5 h, which is a 17% increase over Cycle 3. Total time is increased by 33% [(3000-215)/2100]
8
The fraction of proposals assigned priority
Grade A and B as a function of the estimated
12m Array time.
Distribution of the amount of 12-m Array time
per LST against LST for the array. Grade A, B,
and C
EA Panel members
• Tzu-Ching Chang
• Aeree Chung
• Ken Ebisawa
• Pin-Gao Gu
• Tomoya Hirota
• Akio Inoue
• Hyosun Kim
• Tadayuki Kodama
EA Panel members
• Shinya Komugi
• Yi-Jehng Kuan
• Shih-Ping Lai
• Chang Won Lee
• Jeong-Eun Lee
• Lihwai Lin
• Munetake Momose
10
EA Panel members
• Takayuki Muto
• Tohru Nagao
• Naomasa Nakai
• Hiroyuki Nakanishi
• Masatoshi Ohishi
• Hideo Sagawa
• Masao Saito
EA Panel members
• Kazushi Sakamoto
• Hsien Shang
• Hiroshi Shibai
• Kazuhiro Shimasaku
• Tomoka Tosaki
• Toru Yamada
• Satoshi Yamamoto
• Takaaki Yokoyama
Cycle 4 APRC and ARP members
ARC report:
ALM A Cycle 5
Ca pa bilit ie s
N AOJ Chile Obse r va t or y 2 0 1 7 Apr 5
(Ke n Ta t e m a t su, EA ARC M a na ge r)
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Cycle 5
• Cycle 5 will start in October 2017 and span 12 months.
• 4 0 0 0 (+1 0 0 0 ) hours of 1 2 -m w ill be ava ila ble , a nd 3 0 0 0 (+1 2 0 0 ) hours on ACA.
Date Milesto e
Mar h : UT Release of Cy le Call for Proposals, O ser i g Tool & supporti g do u e ts a d ope i g of the Ar hi e for proposal su issio April : UT Proposal su issio deadli e
E d of July A ou e e t of the out o e of the proposal re ie pro ess August‐Septe er Su issio of Phase S heduli g Blo ks y PIs
O to er Start of ALMA Cy le S ie e O ser atio s Septe er E d of ALMA Cy le
Cycle 5
• Large Proposals may request more than 50 hours of 12m or more than 1 5 0 (5 0 ) hours of ACA st a nd-a lone , for e a ch progra m. Tot a lly, up to 6 0 0 (4 5 0 ) hours of 1 2 m a nd 4 5 0 (2 7 0 ) hours of ACA st a nd-a lone time will be allocated to Large. Only standard modes (see below) are permitted for Large.
• ALMA e nc oura ge s the community to submit Regular
Proposals that request be t w e e n 1 0 a nd 5 0 hours of 12m Array time.
Cycle 5 VLBI
• V LBI: In addition to submitting an ALMA proposal, 3 m m VLBI programs must also submit a proposal to the GM VA V LBI by 1 Fe brua r y 2 0 1 7. Additional information about GMVA will be made available in mid-January 2017.
Additional information about N RAO/EH TC will appear in the ALMA Ca ll for Proposa ls (M a rc h 2 1 ).
• As for Large Programs, mm-VLBI Proposals may designate any number of co- PIs.
• VLBI observations that include ALMA will occur in March/April 2018while ALMA is in a relatively compact antenna configuration, with up to thirty-seven 12-m antennas in the phased array.
• Given that the outcome of 3-mm VLBI Cycle 4 proposals, scheduled in April 2017, is unlikely to be known before the ALMA Cycle 5 proposal deadline, PIs of such proposals may resubmit their proposals in Cycle 5 for the case that the Cycle 4 observations are unsuccessful. No resubmission to the GMVA network is needed in such cases.
Cycle 5
• N um be r of a nt e nna s
• 4 3 (+3 ) antennas in the 12-m Array
• 10 7-m antennas and 3 TP antennas
• 12-m Array Configurat ions
• 1 0 (9 ) c onfigura t ions
• Maximum baselines for the antenna configurations will vary from 0.25 km to 15 km; the planned configuration sc he dule will be released by 1 Fe brua r y 2017 and published in the Proposerʼs Guide
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Cycle 5 Capabilities
• 9 0 -de g sw it ching for side ba nd se pa rat ion only for TDM and wide FDM spw (1875 MHz bandwidth)For Band 9
& 10 (DSB) it will effectively double the bandwidth from 8 GHz to 16 GHz per polarization from the DSB receivers.
Cycle 5 non-st a nda rd (up t o 2 0 % )
• Band 8, 9 & 10 observations
• Band 7 observations with maximum baselines > 5 km
• Longest baseline configuration (16 km) in all Bands (Note in 2017 Jan: it will become standard)
• All polarization observations
• Spectral scans
• Bandwidth switching projects (less than 1GHz aggregate bandwidths over all spectral windows)
• Solar observations
• VLBI observations
• User-specified calibrations (user defined calibrations selected in the OT)
• Astrometric observations
Observing modes (no change)
• Spectral line and continuum observations with the 12-m Array and the 7-m Array in all bands
• Single field interferometry (all bands) and mosaics (Bands 3 to 9) with the 12-m Array and the 7-m Array
• Single-dish spectral line observations in Bands 3 to 8
Cycle 5: Time constraints
• The 14-day minimum tolerance for specification of time constraints will be removed.
• PIs will be allowed to request simultaneity of observations in the 12-m and 7-m arrays. In that case the time estimated for the 7-m Array will be the same as for the 12-m Array.
• Stand-alone ACA proposals requesting only observations on the 7-m Array will be allowed to have time constraints.
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N e w in Cycle 5
• Band 4 pola riza t ion*: Proposals will be accepted for Band 4 observations in all polarization modes, as for the other Bands.
• Ba nd 5 observations: Proposals will be accepted for spectral line (12-m, 7m and Tot a l Pow e r arrays) and continuum (12-m and 7-m arrays) observations in Band 5. Pola riza t ion* will be offered on the 12-m array, as for the other Bands.
• Will start in March 2018
* non-st a nda rd
Cycle 5: Angular resolution
• In Cycle 5, PIs will be allowed to enter a range of angular resolutionsfor a given SG in the OT. The range should be justified in the proposal and be scientifically meaningful.
Configuration Schedule
Start date Co figuratio Lo gest aseli e
LST for est o servi g o ditio s
O to er C ‐ . k ~ h – h
O to er 5 C ‐ . k ~ h – h
O to er 5 C ‐ . k ~ h – h
Nove er C ‐ . k ~ h – h
De e er ‐ No o ser ations due to large antenna re onfiguration
De e er C ‐ . k ~ h – h
Ja uary C ‐ . k ~ h – h
Fe ruary ‐ No o ser ations due to Fe ruary shutdo n
Mar h C ‐ . k ~ h – h
Mar h C ‐ . k ~ h – h
May 5 C ‐ . k ~ h – h
Ju e 5 C ‐ . k ~ h – h
July 5 C ‐ . k ~ h – h
August 5 C ‐ . k ~ h – h
August C ‐ . k ~ h – h
Septe er 5 C ‐ . k ~ h – h
The percentage of time when the PWV is below
the observing thresholds adopted for the various
ALMA bands.
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The percentage of time when the PWV is below
the observing thresholds adopted for the various
ALMA bands.
Observing Pressure
• The highest demand for observations is in the 2-6 h and 12- 19 h LST ranges, with low demand in the 7-9 h and 22-1 h LST ranges. Earlier cycles had similar distributions.
Proposers should be aware that proposals in less
subscribed LST ranges will have a higher probability of execution.
Resubmission
• Proposal teams that submit a Cycle 5 proposal to observe some or all SGs of a currently active but unfinished project will have the relevant SGs identified as a “resubmission” by ALMA. A SG is deemed a “resubmission” if it constitutes a duplication of an active SG following the rules specified in Appendix A of the Userʼs Policies and the PI of the relevant Cycle 4 project is a PI, co-PI or co-I of the corresponding Cycle 5 proposal.
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Cycle 5 Phase 2
• The new workflow would therefore be as follows:
• PI downloadsapproved project
• OT automatically copies the Phase-1 SGs to Phase 2
• PI checks that the details are correct and edits within allowed limits, submitting a Change request if necessary
• PI submits - this counts as approval
• Deadline passes
• Observatory generates SBs automatically
