sustaining submillimeter science: new developmentawootten/ursigassmeeting.pdf · 2017-08-17 ·...
Post on 11-Jul-2020
0 Views
Preview:
TRANSCRIPT
Atacama Large Millimeter/submillimeter ArrayKarl G. JanskyVery Large Array
Robert C. Byrd Green Bank TelescopeVery Long Baseline Array
SustainingSubmillimeterScience:NewDevelopment
A Short OverviewAl Wootten
2 ANASAC f2f Meeting – 17 May 2016
ASACRecommendedDevelopmentPaths• FinishtheScopeofALMA (B1+B2+B5receivers,VLBIcapability)– DetailedinALMAScientificSpecificationsandRequirements (ALMA-
90.00.00.00-001-B-SPE)
• ALMA2030– 1.ImprovementstotheALMAArchive:enablinggainsinusabilityandimpactfortheobservatory.
– 2.Largerbandwidthsandbetterreceiversensitivity:enablinggainsinspeed.
– 3.Longerbaselines:enablingqualitativelynewscience.– 4.Increasingwidefieldmappingspeed:enablingefficientimaging.
URSIGASS2017
3 ANASAC f2f Meeting – 17 May 2016
ALMA’sFuture• Theoriginalspecificationsandmostconstructioncontractswerelet~15
yearsago;thosespecificationsaremostlydemonstrated• Technologyhasadvancedtremendouslysince• ThecommunityisoutlininganewvisiontoextendALMAscienceintothe
future• ALMADevelopmentfundsenablestudieswhichcanunderpinthatvision
– StudiesareavailableintheALMAMemoSeries,theyareopentocommunityparticipation
– SACsandscienceteamcombinedtheseintoapaletteofpossibleupgradessummarizedin‘ALMA2030’
– Communitynowengagedintransformingtheseelementsandothersintoascience-drivenvisionforthenext5-15years
• ALMADevelopmentProjectsfundupgradestoALMAtoachievethatvision,astheyhaveforBands1(35-52GHz)and5(163-211GHz),andwillfortheremainingBandsandothercapitalinvestments
URSIGASS2017
4 ANASAC f2f Meeting – 17 May 2016
ALMADevelopment
• ALMAOperationsincludeddevelopmentfunds– Rampeduptosteady-statelevelbyFY2015– Firstprioritywastobuildtounfundedrequirements(receiverbands,VLBI)
• ALMAIntegratedScienceTeamworkingwiththeALMAScienceAdvisoryCommittee(ASAC),developedPATHWAYSTODEVELOPINGALMA(ALMA2030)
• Usinginformationgleanedfromvarioussources,Pathways informsdiscussionsleadingtoassemblyofaroadmapforALMAimprovements
URSIGASS2017
5 ANASAC f2f Meeting – 17 May 2016
ALMADevelopmentOverview• ALMAOperationscomprisesmanyorganizationsinmanycountriesand
manyentitiesparticipateinDevelopmentinparallelbutslightlydifferentfashion
• Projects arelargepan-ALMAefforts,budget≥$.2Mtakingseveralyears,culminatinginmajornewcapabilitiesorimprovements– BeginwithrecommendationofALMAExecutive(s),perhapsinresponsetoa
CommunityCall– NeedapprovalofALMAManagementTeam(JAO,EA,EU,NA),ASACand
recommendationofALMADirectortoALMABoard• Studiesandsmallprojectsareshorterterm,lowerbudgetendeavors
– Normally,StudiesareinitiatedbyaCommunityCallforIdeas– Mayleadtoprojects,singlyorcollectively– FundingatdiscretionofALMAExecutives
• Bothareguidedbyaconstellationofpotentialimprovements,manylistedinadocumentknownas‘ALMA2030’
URSIGASS2017
6 ANASAC f2f Meeting – 17 May 2016
ProgressionofALMADevelopmentComponents
URSIGASS2017
ALMAEnhancement
Implementation/CASA ADMIT(Sept2016)
ALMADevelopmentProject
CARTA ALMADataMiningToolkit
ALMADevelopmentStudy
NextGenALMADataViewer UnleashingLargeDatasetScience
7 ANASAC f2f Meeting – 17 May 2016
CurrentProjectOverview
NA Development Program
Three Projects continue during FY2017.
Design&TestingofaPrototype67-95GHzCartridge
Band3CCAHeaterInstallationforDeflux OperationFiberOpticProject
• NewALMABand2+providesnewscience:sensitive accesstoredshiftedCO‘desert’anddeuteratedlightmoleculespassedPDRMay• NRAO+NAOJ,suspended
• CorrelatorUpgrade(notyetapproved)• FiberopticconnectionALMAtoJAOimprovesPI
datadelivery• B3upgradetodeliverimprovedTPstability• RecentlydeliveredADMITandCARTAprojectsfor
improvedarchiveuse• ALMAPhasingProject(someelementspending)
ADMITproductsaredeliveredwithdatapackages,alsoarchived(currentlyindependently)
URSIGASS2017
8 ANASAC f2f Meeting – 17 May 2016
EUDevelopmentProgram
URSIGASS2017
CurrentProjectOverview• NewALMABand5(163-211
GHz)providesnewscience:• FollowtheWater!
• 183GHzwaterline
• [CII]at8.0<z<10.65• ConsortiumofGARD,NOVA,
NRAO,ESO,NAOJ• PublicDataavailable(SV)
• ALMAAlarmSystem• ALMAB2+3(pendingreview)
• 67-116GHzonecartridge• PrototypePDRNov‘17
SEPIA/Apex data Wyrowski+ 2017
9 ANASAC f2f Meeting – 17 May 2016
EADevelopmentProgram
URSIGASS2017
CurrentProjectOverview• Band1(35-51GHz)enablesnew
science:• Opticallythindustindisks• HighzCO• Trx ~25K;ASIAA,withNAOJ,Uof
Chile,NRAO,HIA;availableca2020• GPUSpectrometerforTP(w/KASI)• Band5IntegrationandTesting• Band2,2+3optics• ArtificialCalibrationSource
• BeaconatChajnantor• 100GHzdelivered• 230/345GHz2018
• HighCriticalCurrentDensity(Jc)SISJunctionDeviceDevelopment(esp WidebandRF/IFandTHzdevices)
ACS acceptance at OSFBand 1 Receiver
10 ANASAC f2f Meeting – 17 May 2016
Cycle4StudyOverviewActingonALMA2030vision:• Increasingreceiversensitivity,bandwidth
1. UpgradedALMAB3mixerblock- Henke2. 2nd generationSISreceiverdevelopment-Kerr
• ExpandingALMA’sprocessingbandwidth1. UpgradeofBackendAntennaArticletomatch
correlatorupgrade- Ford
• Improveddatause1. ImprovedinteractiveCLEAN2. Improvedimagingwithcombinedarrays
• Maximizingpointsourcesensitivityandresolution1. WeaksourceandspectrallineVLBI
NA Development Program
Six Cycle 4 Studies underway.
Aprotoplanetarydisksimulation:r:currentbandwidthl:upgraded2xBW.
Developmentof2nd GenerationSISReceiversforALMA:PrototypebalancedB6amplifier4-12GHz
TotalPowerMaptoVisibilities(TP2VIS)a)Jointdeconvolutionb)Currentmode
URSIGASS2017
11 ANASAC f2f Meeting – 17 May 2016
Cycle5StudyOverviewActingontheALMA2030vision:• Increasingreceiversensitivity,bandwidth
• 2nd GenerationSISReceiverDevelopment -Kerr
• ExpandingALMA’sprocessingbandwidth• Quantum-LimitedVery-Wideband4-Kelvin
RFandIFAmplifiersforALMA- Noroozian• Improveddatacharacterization
• NeuralNetworkAnalysisofALMADatasets-Merenyi
• Full-fieldprimarybeammodelswillbe developedforuseinimagingsoftware• Full-MuellerMosaicImagingwithALMA,PI
SanjayBhatnagar
NA Development Program
Four Cycle 5 Studies Commence FY2018.
NeuralNetworkanalysishighlightsdeparturesfromKeplerian diskmotioninHD142527.
URSIGASS2017
Imagingwithdifferentantennas
12 ANASAC f2f Meeting – 17 May 2016
StudyOverviewActingontheALMA2030vision:• SISJunctionTechnologyDevelopment(Belitsky,
GARD)• EvolutionoftheALMAObservingTool(Bridger,
UKATC)• Band2+3(ESO,INAF,UManc,NAOJ,RAL,• UChile)
– PassiveComponent– InP MMICLNAsforALMABand2+3– Band2+3Prototype(internal;ongoing)
• DigitizationandDigitalSignalProcessingfor16GHzon-skybandwidth(AlainBaudry)
• DigitalALMAFrontEnd• 2SBupgradeforBand9(NOVA,Baryshev)• SolarObservations(pendingALMAMemo)• XClass/MAGIXintegrationinCASA• ARTISTprototypeinterface
EU Development Program
B2+3LNAperformance(Cuadro-Calle etal.2017)
URSIGASS2017
13 ANASAC f2f Meeting – 17 May 2016
StudyOverviewActingontheALMA2030vision:• ALMACalibrationSource
– Calibrationatbands3,6,7• HighCriticalCurrentDensity(Jc)SIS
JunctionDeviceDevelopment(includingWidebandRF/IFandTHzdevices)
• GPUSpectrometerforTotalPowerarray(withKASI)– SupplementstheACAcorrelator– Separatesauto-correlationfrom cross-
correlation,maintaining32-bitquantizationandeliminatingre-quantizationlossinthedecimation.
EA Development Program
CompleteFluxRecoveryusing12m+7m+TP
URSIGASS2017
14 ANASAC f2f Meeting – 17 May 2016
ImmediateFuture• Projects
– Next:FollowmanystepsinPrinciplesofALMADevelopment,• CorrelatorUpgrade,APPprobablytoBoardlate2017.• ALMABand2+orB2+3probablytoBoard2018.
• Studies– NewCallseverythreeyearsatESO(2019),probablyFY2019inNA,
yearlydiscussionsinEA
• ALMA2030
URSIGASS2017
15 ANASAC f2f Meeting – 17 May 2016
ALMADevelopmentVision• TheALMADevelopment WorkingGroupshallproposeascience-drivenvisionforthemedium(5years)tolongerterm(5to15years)developmentofALMA
• TwonewScienceDriverswereidentified:– Disks&Planets:Theabilitytoexplorethechemicalcompositionandevolutionofdisks,includingaroundplanets,downtoscalesof1AU
– FirstGalaxies:Theabilitytoinvestigatetheearlyuniversefromtheformationofmetals(firststars)tothepeakofstarformationandtoidentifythefirstgalaxiesandimagetheirsurroundings
URSIGASS2017
16 ANASAC f2f Meeting – 17 May 2016
DevelopmentPrioritiesToRealizetheVision
• BroaderIFbandwidth;upgradecomponents– Spectrometeranddigitizerupgrades– Receiverupgrades(B6/7,B3,B9)– Results:
• Bettercontinuumsensitivity• Improvedspectralcoverage,sensitivity
• Additionalantennas,longerbaselines,focalplanearrays– BeyondbasicDevelopment– Improvedspectralsensitivityandimaging– Widefieldimaging
URSIGASS2017
17 ANASAC f2f Meeting – 17 May 2016
• Mielparque Kyoto,October3- 5,2017• Registerby1September• Webhttp://alma-intweb.mtk.nao.ac.jp/~diono/meetings/longBL2017/
ALMA Long Baseline Workshop
18 ANASAC f2f Meeting – 17 May 2016
PolarizationWorkshop
• Submm/mm/cmQUESOWorkshop2017:• Centimetre-Sub-Millimetre Q&U(andV)EuropeanSouthernObservatoryWorkshop
• Garching,October25- 27,2017
URSIGASS2017
19 ANASAC f2f Meeting – 17 May 2016
AtLAST
• AtacamaLarge-ApertureSubmm/mmTelescope(AtLAST)
• ESO-HQ,Garching b.München,Germany• January17-19,2018
URSIGASS2017
20 ANASAC f2f Meeting – 17 May 2016
MagneticFieldsorTurbulence:Whichisthecriticalfactorfortheformationofstarsand
planetarydisks?• 6-9Feb2018,NationalTsingHuaUniversity,Hsinchu,Taiwan• Discussionsonallaspectsofstarandplanetarydiskformation,
suchas– Magneticfieldandturbulencemeasurements– Molecularcloudstructureanddynamics– Formationofprotoplanetarydisks– Chemicalcontentsofmolecularcoresanddisks– Starformationefficiency
• http://events.asiaa.sinica.edu.tw/workshop/20180206/index.php
URSIGASS2017
21 ANASAC f2f Meeting – 17 May 2016
New Horizons in Solar Systems
A Joint NAASC-NRC ConferenceVictoria, BC, May 2019
22 ANASAC f2f Meeting – 17 May 2016
www.nrao.eduscience.nrao.edu
The National Radio Astronomy Observatory is a facility of the National Science Foundationoperated under cooperative agreement by Associated Universities, Inc.
23 ANASAC f2f Meeting – 17 May 2016
www.nrao.eduscience.nrao.edu
The National Radio Astronomy Observatory is a facility of the National Science Foundationoperated under cooperative agreement by Associated Universities, Inc.
24 ANASAC f2f Meeting – 17 May 2016URSIGASS2017
Adapted From Walter et al. 2016
Upgraded Correlator, IF, Halves Spectral Search Settings
UpgradedALMACorrelatorneedsonlyfoursettingstocoverBand6;currentlyeighttunings(Lettered,left)areneededtocoverthefrequenciesofthe[CII]lineatredshiftsof6to8intheALMAASPECSspectralscanoftheHubbleUltraDeep Field.
25 ANASAC f2f Meeting – 17 May 2016
UpgradedCorrelatorNetsMoreLines
• ManyCOisotopomers fallwithinapartoftheHerschelHEXOSspectralscaninaportionofALMABand9(611-720GHz)showingthespectralgraspofthecurrentbaselinecorrerlator (8GHzx2polarizations)comparedtothatfromtheupgradedcorrelator(2x8GHzx2polarizations).FromTahani etal.2016.
• Forhighresolution,ALMA’scurrentconfigurationprovides58MHzspectralwindows,only~70km/sat300GHz.Withthecorrelatorupgrade,onecouldachievethesameresolutionover~550km/s.
URSIGASS2017
top related