CosmicOrigins(COR)StrategicTechnologyDevelopmentPortfolio

December2016

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CurrentCORSATPortfolioFunding Source Technology Development Title Principal

Investigator Org Start Year, Duration

Science Area

Tech Area

SAT2011 Ultraviolet coatings, materials and processes for advanced telescope optics

Kunjithapatham Balasubramanian JPL FY2013, 3 years UV Optical

Coating

SAT2011 Kinetic Inductance Detector Imaging Arrays for Far-Infrared Astrophysics Jonas Zmuidzinas JPL FY2013, 3 years Far-IR Detector

SAT2012 A Far-Infrared Heterodyne Array Receiver for CII and OI Mapping Imran Mehdi JPL FY2014, 3 years Far-IR Detectors

SAT2012 Deployment of Digital Micromirror Device (DMD) Arrays For Use In Future Space Missions Zoran Ninkov RIT FY2014, 2 years UV Detector

SAT2012 SAT2010 Advanced Mirror Technology Development Phase 2 Phil Stahl MSFC FY2014, 3 years UVOIR Optics

SAT2014 Raising the Technology Readiness Level of 4.7-THz local oscillators Qing Hu MIT FY2016, 3 years Far-IR Detector

SAT2014 SAT2010

Development of Large Area (100x100 mm) photon counting UV detectors John Vallerga UCB FY2016, 2 years UV Detector

SAT2014Building a Better ALD - use of Plasma Enhanced ALD to Construct Efficient InterferenceFilters for the FUV

Paul Scowen ASU FY2016, 3 years UV Optical Coating

SAT2014 SAT2011

Advanced FUVUV/Visible Photon Counting and Ultralow Noise Detectors Shouleh Nikzad JPL FY2016, 3 years UVOIR Detector

SAT2014 Ultra-Stable Structure: Development and Characterization Using Spatial Dynamic Metrology Babak Saif GSFC FY2016, 4 years UVOIR Stable

Structure

SAT2015 High-Efficiency Continuous Cooling for Cryogenic Instruments and sub-Kelvin Detectors James Tuttle GSFC FY2017, 3 years Far-IR Cooling

SystemSAT2015SAT2012SAT2010

Predictive Thermal Control Technology for Stable Telescope H. Philip Stahl MSFC FY2017, 3 years UVOIR Optics

3

Ultraviolet Coatings, Materials and Processes for Advanced Telescope Optics

PI: Bala K. Balasubramanian/JPL

TRLin = 3 TRLcurrentest.byPI = 4 TRLtarget = 5

ObjectivesandKeyChallenges:• “DevelopmentofUVcoatingswithhighreflectivity(>90-95%),

highuniformity(<1-0.1%),andwidebandpasses(~100nmto300-1000nm)”isamajortechnicalchallengeasmuchasitisakeyrequirementforcosmicoriginsprogramandforexoplanetexplorationprogram.Thisprojectaddressesthiskeychallengeanddevelopfeasibletechnicalsolutions.

SignificanceofWork:• Materialsandprocesstechnologyarethemainchallenges.

ImprovementsinexistingtechnologybaseandsignificantinnovationsincoatingtechnologysuchasAtomicLayerDepositionaredeveloped.AdvancedmissionconceptssuchasLUVOIRandHabExstandtobenefit.

Approach:• AsetofexperimentaldatadevelopedwithMgF2,AlF3 andLiF

protectedAlmirrorsinthewavelengthrange100to1000nmforacomprehensivebaseofmeasureddatatoenablefullscaledevelopmentswithchosenmaterialsandprocesses.

• EnhancedcoatingprocessesincludingAtomicLayerDeposition(ALD)havebeendevelopedandstudied.

KeyCollaborators:• StuartShaklan(JPL),NasratRaouf(JPL),ShoulehNikzad(JPL),

JohnHennessy(JPL)• ManuelQuijada(GSFC).• PaulScowen(ASU),JamesGreen(UnivofColo)FY14.CurrentFundedPeriodofPerformance:• Jan2013– Dec2015

RecentAccomplishments:ü Acoatingchamberhasbeenupgradedwithsources,temperature

controllersandothermonitorstoproducecoatingsofvariousmaterials.MeasurementtoolsarealsoestablishednowatJPLandatGSFC.

ü SeveralsamplesofprotectedAlwithLiFandAlF3havebeenproducedandmeasuredwithencouragingresultsforfurtherimprovements

ü ALDcoatingprocesstoolsandprocessforMgF2,AlF3andLiFhavebeendevelopedandoptimized

ü Produced&testedmirrorcouponsrepresentingameter-classmirror

Application:• Thetechnologytoenablefutureastrophysicsandexoplanetmissions

thataimtocapturekeyspectralfeaturesfromfarUVtonearinfrared.• LUVOIR,HabExandHDSTMissionconceptsunderstudy

ALDchamberatJPL 1.2mcoatingchamberat ZecoatCorp

4

DescriptionandObjectives:• Halfoftheelectromagneticenergyemittedsincethebigbanglies

inthefar-infrared.Large-formatfar-infraredimagingarraysareneededforstudyinggalaxyformationandevolution,andstarformationinourgalaxyandnearbygalaxies.Polarization-sensitivearrayscanprovidecriticalinformationontheroleofmagneticfields.

• Wewilldevelopanddemonstratefar-IRarraysfortheseapplications.

KeyCollaborators:• G.Chattopadhyay,JPL• PeterDay,JPL• DarrenDowell,JPL

• MattHolllister,Caltech• RickLeduc,JPL• ChrisMcKenney,Caltech

Application:• SOFIAinstruments• Balloonpayloads• Futurespacemission,e.g.,OSTorProbes• Ground-basedtelescopes• Applicabletobothcamerasandspectrometers(lowNEPlab

demo)• Potentialimpactonmm-waveCMBinstrumentation

Kinetic Inductance Detector Arrays for Far-IR Astrophysics

Approach:• ThegoalistoraisetheTRLofthesedetectorssothat

investigatorsmayconfidentlyproposethemforavarietyofinstruments:

• Groundtelescopedemo,350µm,3x10-16 WHz-1/2• Labdemoforspace,90µm,5x10-19 WHz-1/2

PI: Jonas Zmuidzinas/Caltech

Accomplishments:• Fall2012:Labdemonstrationat350µm• Spring2013:Successful350µmtelescopedemoattheCaltech

SubmillimeterObservatory (CSO)(seeimageabove)• Fall2014/Spring2015:CSOtestoflens-coupled350µmarrays• Spring2015:Opticaltestsofhigh-sensitivityarrays• May2015:FinalCSOdemonstration

KeyChallenge/Innovation:• Far-infraredarraysareinhighdemandbutaredifficultto

fabricate,andthereforeexpensiveandinshortsupply.Oursolutionistousetitaniumnitride(TiN)absorber-coupled,frequency-multiplexedkineticinductancedetectors.

TRLin=3 TRLcurrent est.byPI =3,6 TRLtarget=4-6

DevelopmentPeriod:• Feb2013– Feb2015(nocostextensionsthroughFeb2017)

DemoatCSO:350µmimageofSgrB2

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DescriptionandObjectives:

Approach:

Collaborators:

AccomplishmentsandNextMilestones:

• Heterodynetechnologyisnecessarytoanswerfundamentalquestionssuchashowdostarsform?Howdocircumstellardisksevolveandformplanetarysystems?Whatcontrolsthemass-energy-chemicalcycleswithingalaxies?

• Wewilldevelopa16-pixelheterodynereceiversystemtocoverboththeC+andtheO+lines.

• Paul Goldsmith (Science Lead), Jon Kawamura, Jose Siles, Choonsup Lee, Goutam Chattopadhyay (all JPL); Frank Chang (UCLA), Sander Weinreb (Caltech)

• ArrayreceiversforSOFIA• Heterodynearrayreceiversforfuturesuborbitalandspacemissions

• ArrayreceiversforCCATsubmillimetertelescope

A Far-Infrared Heterodyne Array Receiver for C+ and OI Mapping

• Utilize JPL developed membrane diode process to construct tunable sources in the 1.9-2.06 THz range

• Utilize novel waveguide based active device power combining schemes to enhance power at these frequencies

• Design and build compact silicon micromachined based housing for HEB mixer chips

• Utilize CMOS technology for backends/synthesizer• Characterize and test multi-pixel receivers to validate

stability and field performance Application:

PI: Dr. Imran Mehdi/JPL

• Demonstratedasolid-stateLOsourceat1.904THzthatputsout50microwattsofpower.• Demonstrationof4-pixelLOchain• Developmentofwaveguidebased4-pixelHEBmixerarray• Demonstrate4-pixelRx• Detaileddesignanddevelopmentfora16-pixelreceiver

16-pixel1.9THzallsolid-stateLOsource

Keychallenge/Innovation:• Lack of solid-state sources in the THz range is perhaps the

single most important challenge towards implementing array receivers

• Low power backend spectrometers• Multi-pixel receiver characterization and calibration protocols

TRLin = 3 TRLcurrent = 4 TRLtarget = 5

1.9THzdiode

DevelopmentPeriod:• Jan 2014-Dec 2016

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Development of Digital Micro-Mirror Device Arrays for Use in Future Space MissionsPI: Zoran Ninkov/Rochester Institute of Technology

ObjectivesandKeyChallenges:• Thereisaneedforatechnologytoallowforselectionoftargetsin

afieldofviewthatcanbeinputtoanimagingspectrometerforuseinremotesensingandastronomy.

• WearelookingtomodifyanddevelopDigitalMicromirrorDevices(DMD)forthisapplication.

SignificanceofWork:• ExistingDMDsneedtohavethecommercialwindowsreplaced

withappropriatewindowsforthescientificapplicationdesired.

Approach:• Useavailable0.7XGADMDdevicestodevelopwindowremoval

proceduresandthenreplacedeliveredwindowwithahermeticallysealedUVtransmissiveoneofMagnesiumFluoride,HEMSapphireandfusedsilica.TestandevaluatesuchdevicesandalsoCinemaDMDs.

KeyCollaborators:• SallyHeap,ManuelQuijada(NASA/GSFC)• MassimoRobberto (STScI)• AlanRaisanen(RIT)• JonnyPellish(NASAGSFC)• TimSchwartz(NASAGSFC)

CurrentFundedPeriodofPerformance:• May2014– May2017

RecentAccomplishments:• 0.7XGAand1.2DC2KDMDsreceived• XGAdevicesre-windowedsuccessfully.• Radiationandvibrationtestingshowsgoodresults.• Contrastmeasurementsindicatehighcontrast.NextMilestones• GammatestingDMDatGSFC(March2016)• LowTemperatureTesting(February2016)• RecoatDMDdevicesandtest(April2016)

Application:• Canbeusedinanyhyper-spectralimagingmission.• ProposedforprobemissionATLAS(AstrophysicsTelescopefor

LargeAreaSpectroscopy).

TRLIn = 4 TRLCurrent = 4 TRLTarget= 5

DMD

DMDwithonemirrorsegmentremovedshowingdriver

Close-upofmirrorsegmentdriver

DMDwithallmirrorsegmentsremoved

§ Primary• Secondary

• Tertiary

§ Primary• Secondary

• Tertiary

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DescriptionandObjectives:MaturetoTRL6criticaltechnologiesneededtoproduce4morlargerUVOIRmirrorssuchthatthe2020DecadalReviewcanselectaUVOIRmirrortohelpanswerfundamentalsciencequestions• Demonstratedeepcoreprocesslaterallyscalesfrom43cm

diameterto1.5m• Characterizemirroropticalperformancefrom250Ktoambient• Addcapabilitiestointegrateddesign&modelingtools

KeyCollaborators:• Dr.ScottSmith,RonEng,andMikeEffinger/NASAMSFC• BillArnold/DefenseAcquisitionInc.,GaryMosier/GSFC• Dr.MarcPostman/STScI,LauraAbplanalp,KeithHavey,Roger

Dahl,SteveMaffett/ITTExcelis,TonyHull/UnivNM/Schott

Application:• Flagshipopticalmissions• Explorertypeopticalmissions• DepartmentofDefenseandcommercialobservations

Advanced UVOIR Mirror Technology Development for Very Large Space Telescopes

Approach:• Design&fabricate&testmounting&1/3scalemirror• Design&fabricatemounting&testexistingExtremeLightweight

ZerodurMirror*• Predictresponseofmirrortestswithintegratedmodel,

investigateoptimizedmechanicaldesignmethods,predicton-orbitperformance,refinePhase1pointdesigns

*Dynamictestingcut

PI: Phil Stahl/MSFC

KeyChallenge/Innovation:• Fabricate1/3-scaleof4mdeepcoreULE®mirror• Useintegratedmodelingtopredictopticalperformance(Point

SpreadFunction,Jitter,EncircledEnergy,WavefrontError,etc.)• Fabricateandtestanewactuator

TRLin=variesfromTRL3toTRL5.5pendingtechnologyTRLcurrent= variesfromTRL3toTRL5.5pendingtechnologyTRLtarget= halfstepincrease

DevelopmentPeriod:• Sept2011– Sept2016

AccomplishmentsandNextMilestones:• Updatedmirror&spacecraftmodelers• Submitted9papers toSPIE Optics & Photonics conf./Aug.2013• AwardSchottcontract/December2013• DetermineandreconcileExcelisSOWTaskstoavailablebudget

(TestArticles,1/3rdScaleMirror,etc.)/January2013• InitiateExcelismirrorfabrication/March2013• SeekoneormoreoutsideStakeholderstojoinAMTDwith

additionalbudgetandtechnicaltasks

Flexible, Fast and Detailed

mirror modeler

8

Raising the Technology Readiness of 4.7-THz Local Oscillators

PI: Qing Hu/MITObjectivesandKeyChallenges:• This project seeks to raise the TRL of 4.7-THz local

oscillators based on THz quantum-cascade lasers.• The key challenges are to increase the output power level

from the current level of ~0.2 mW to 5 mW, and to increase the operating temperature from a lab-demonstrated ~10 K to ~40 K that can be provided in a space-based or suborbital observatory.

SignificanceofWork:• The4.744THz[OI]fine-structurelineisthedominantcooling

lineofwarm,dense,neutralatomicgas.Observationofthislinewillprovidevaluableinformationforstudiesofcosmicorigins.

• This project will be important to the proposed GUSTO project.

Approach:• Develop perfectly phase-matched 3rd-order DFB structures

at 4.7 THz with robust single-mode operations with good beam patterns.

• Develop phase-matched 3rd-order DFB coupled with integrated antennae to increase the output power level to ~5 mW, and to increase the wall-plug power efficiency to 0.5%.

KeyCollaborators:• John L. Reno, Sandia• J. R. Gao, SRON/Delft• Chris Walker, ASU

CurrentFundedPeriodofPerformance:• March 1, 2016 – February 28, 2019

RecentAccomplishments:• Have completedthedesignofperfectlyphase-matched3rd-

orderDFBlasersaimedfor~4.7THz.• In this design, a novel structure is developed to suppress

higher-order lateral modes. • Masks have been generated based on the design.NextMilestones(by2/28/2017):• Developahigh-yielddry-etchingprocesstoachievecleanand

smoothsidewallswithhighaspectratios.• Grow~3MBEwafersbasedonimprovedQCLdesigns.• Fabricatedevicesusingacombinationofdryandwetetching.

ArrayofDFBlasersat~4.7THz.TheharmonicmixerisusedtophaselocktheQCLLO.

TRLin=3 TRLcurrent=3 TRLtarget=5

Harmonicmixer

4.7THzQCL

Application:• GUSTO(TheGal/XgalU/LDBSpectroscopic/StratosphericTHz

Observatory),SOFIA,security,biochemicalsensing,andbiomedicalimaging.

§ Primary• Secondary

• Tertiary

§ Primary• Secondary

• Tertiary

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KeyCollaborators:• Prof.GaryVarner,U.Hawaii• Dr.OswaldSiegmund,U.C.Berkeley

Applications:• HighperformanceUV(1-300nm)detectorforastrophysics,

planetary,solar,heliospheric,oraeronomymissions• Particleortimeofflightdetectorforspacephysicsmissions• Neutronradiography/tomographyformaterialscience

Development of 100 x 100mm Photon CountingUV Detectors

Approach:We will scale up the 50x50 mm detector design by a factor of two tocreate a flight qualified 100x100 mm design that can beenvironmentally tested for thermal and vibrational stability. We willtest the sensitivity of both ASICs to radiation, both total ionizingdose and single event upsets. We will convert the HG2 ASIC designinto 130nm CMOS technology and combine with the existing CSAv3design into a single die. In parallel, we will design and construct anFPGA readout circuit for these new ASICs

PI: John Vallerga/U.C. Berkeley

AccomplishmentsandNextMilestones:• 100mmdetectordesigninitiated,outforfabrication– Sept2016• DetectorimagingperformancewithPXSelectronics– Dec.2016• ConvertHG2designtoGRAPHin130nmCMOS– Jan.2017• SubmitGRAPHASICtofoundry- Winter2017• FabricationandperformancetestingofGRAPH– late2017• GRAPHASICintegrationwithcontrolFPGAboards-Jan2018• FullASICelectronicstestedwithDetector(winter2018)• Environmentaltestsof100mmDetector+ASICs(Spring2018)

KeyChallenge/Innovation:• CombiningourtwoexistingASICdesignsintooneASIC(“GRAPH”)

using130nmCMOstechnology• Maintainingnoiseperformancewithanaloganddigitalcircuitson

samedie• Anew100x100mmMCPdetectorwiththenewelectronicsand

testedenvironmentally

•TRLin= 4 TRLcurrent=4 TRLtarget= 6

DescriptionandObjectives:A 50x50mm Cross strip (XS) MCP photon counting UV detectors waspreviously developed that achieved high spatial resolution (15µm) atlow gain (500k) and high input flux (MHz). The detector was thenenvironmentally qualified. Two ASICs (CSAv3 and HG2) were alsofabricated to improve this performance. This program continues thisdevelopment by scaling the detector format to 100x100 mm whileupdating the ASICs which will lower power consumption andsimplify layout.

Existing 50 mm detector (without

MCPs) 100 mm MCP detector with ASIC electronics qualified for flight

DevelopmentPeriod:• April1,2012– March30,2018

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Improving Ultraviolet Coatings and Filters using Innovative Materials Deposited by ALD

PI: Paul Scowen/ASU

Objectives and Key Challenges:• Use a range of oxide and fluoride materials to build stable

optical layers using PEALD to reduce adsorption, scattering and impurities

• Layers will be suitable for protective overcoats with high UV reflectivity and unprecedented uniformity (compared to thermal ALD)

• Development of single-chamber system to deposit metal oxide and dielectric layers without breaking vacuum

Significance of Work:• To use the improved ALD capability to leverage innovative

ultraviolet/optical filter construction

Approach:• Development of existing PEALD system to a single-

chamber model• Demonstration of Al film deposition• Demonstration of Fluoride deposition on top of Al films• Demonstration of VUV reflectivity, uniformity and stabilityKey Collaborators:• Paul Scowen, Robert Nemanich, Brianna Eller, Franz

Koeck, Hongbin Yu (ASU)• Tom Mooney (Materion)• Matt Beasley (Planetary Resources Inc.)Current Funded Period of Performance:• Dec 2015 through Nov 2018

RecentAccomplishments:ü Install in-situ VUV spectrometer to measure performance

<120 nm – calibrate performance using NIST-calibrated UV detector

ü Demonstration of the deposition of low-loss oxides on evaporated Al surfaces – provide surface for reflection <190 nm

Application:• LUVOIR / HDST / ATLAST

NextMilestones:• Demonstrate deposition of Al films using PEALD and

measure UV reflectivity – measure to accuracy better than 3% - Mar. 16’

TRLIn = 3 TRLPI-Asserted = 3 TRLTarget= 4

FIG 1. Photograph and schematic of UHV system. The chamber highlighted in blue and the chambers currently being built, which will support oxygen-free deposition and processing.

oxide PEALD UPS e-beam ECR MBE H2

plasma load lock AES XPS load lock XPS/UPS MBE iPlas fluoride

PEALD

VUV spectro-

meter

oxide PEALD

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AdvancedFUVUV/VisiblePhotonCountingandUltralowNoiseDetectors

ShoulehNikzad/JPL

ObjectivesandKeyChallenges:• ObjectiveDevelopandadvanceTRLofsolarblind,highefficiency,

photoncounting,andultralownoisesolid-statedetectorsesp.inFUV(l <200nm).

• Keychallenges:solarblindsilicon,largeformatarrays,reliableandstablehighresponseintheFUV

SignificanceofWork:• Keyinnovationofworkare:highandstableresponseinthe

ultravioletthroughatomiclevelcontrolofsurfaceandinterfaces;thebreakthroughinrenderingSidetectorswithoptimizedin-bandresponseandoutofbandrejection.VersatilitywithCMOSandCCD.

Approach:• Fabricate&ProcessUVdetectorsbySuperLattice(SL)doping

ElectronMultiplyingCCDs(EMCCDs)andultralownoiseCMOSwafers

• Developmulti-stackintegratedsolarblindfiltersusingatomiclayerdeposition(ALD)

• CombineintegratedSBfiltersandSL,withsCMOSandEMCCDs• Characterize,andvalidateKeyCollaborators:• ChrisMartin,Caltech• DavidSchiminovich,ColumbiaUniversity• MichaelHoenk,JPL• E2v,potentiallyAndorCurrentFundedPeriodofPerformance:• December2015– December2018

RecentAccomplishments:• ProcuretwomegapixelEMCCDwafers• sCMOSwafers(March2016• ProcessEMCCDwafersbythinningandbonding(June2016)• BegindesignofFUVintegratedfilters(July2016)

Application:• LUVOIR,HDST,HabEX• Probes,Explorers

NextMilestones:• IntegratefiltersintoEMCCDs(Feb2017)• ObtainsCMOSwafers(March2017)• CompleteprocessingEMCCDbySLDoping(Apr2017)• BeginprocessingsCMOS• IntegrateUVFUVintegratedfiltersinEMCCDs(July2017)

TRLIn =3 TRLPI-Asserted= 3TRLTarget= 4-5

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MBE-grownsuperlattice

Silicondetector

TRLIn =4 TRLPI-Asserted= 4TRLTarget= 5-6sCMOSEMCCD

Note:TRLisassessedfor2-D,wintegratedfilters

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Ultra-Stable Structures Development and Characterization Using Spatial Dynamic Metrology

PI: Babak N. Saif/GSFC

ObjectivesandKeyChallenges:• Developingsurfacepico-metermetrologyofmirrorsandstructures.• Developingstimulisystemforpico-meterexcitations.• Developingstructuresandmirrorswithcontrolleddynamicsatpico-

meterlevels

SignificanceofWork:• Stabilityanddynamicsoflargestructuresandmirrorsare

requirementsforlargespacemissionssuchasATLAST,Exoplanetmissions.

Approach:• GSFCwillworkwithavendortodevelopaDynamicalDigitalSpeckle

PatternInterferometerwithPIC-meterprecision.• Developanisolatedtabletopsetuptomeasuredynamicsanddrift

ofmaterial,smallstructures.• Redesignandmodelingdynamicsofthemeasured

material/structures.KeyCollaborators:• BabakSaifGSFC,LeeFeinbergGSFC• DaveChaneyBallAerospace,MarcelBluthSGT• PerryGreenfieldSTSCI

CurrentFundedPeriodofPerformance:• 2016-2018

RecentAccomplishments:ü Finalizingthecontractwiththevendorfordevelopingthe

interferometer.ü StartedorderingVacuum–ThermalChamber

Application:• FuturelargeAstronomy/Astrophysicsmissions..Exo-plantmissions.

NextMilestones:• Startingworkingwiththevendortodeveloptheinterferometerand

verificationplanandtestingplanofitateachstageofdevelopment.

TRLIn =3 TRLPI-Asserted= 3TRLTarget= 4

Thermal-VacuumChamber

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High-Efficiency Continuous Cooling for Cryogenic Instruments and sub-Kelvin Detectors

PI: Jim Tuttle/NASA GSFC

ObjectivesandKeyChallenges:• BringtoTRL6acoolingsystemthatprovides:

• ContinuouscoolingatT<50mK;rejectingheatat10K• Coolingpower>10timesthatofcurrentflightADRat50mK• Continuouscoolingat4Kfortelescopes,optics,etc.• Lowexternalmagneticfield:|B|<5µT• Simple,efficient,vibration-freeoperation• Provenreliability;nomovingparts

SignificanceofWork:• Systemwillexceedrequirementsofcurrently-conceivedcryogenic

detectorarrays

Approach:• AdiabaticDemagnetizationRefrigerator(ADR)

• Paramagneticsaltsheated/cooledbychangingmagneticfield• Heatpumpedbetweenstagesseparatedbyheatswitches• Controlofheattransferprovidescontinuouscoolingatselected

stages(50mK,4K)• Advancedmagneticshieldingeliminatesstrayfields

KeyCollaborators:• AmirJahromi,EdCanavan,HudsonDeLee,MikeDiPirro,Mark

Kimball,PeterShirron,DanSullivan,EricSwitzer(NASA/GSFC)

CurrentFundedPeriodofPerformance:• January2017– December2019

RecentAccomplishments:• Workperiodbegins1/2017

Applications:• Far-IRSurveyor,InflationProbe,X-raySurveyor• PossiblyHabExandLUVOIR

NextMilestones:Demonstratesingle-stage10K– 4KADR(12/2017)Demonstrate10K– 4KContinuousADR(12/2018)Demonstratepre-vibe10K– 50mKCADR(9/2019)Demonstratepost-vibe10K– 50mKCADR(12/2019)

TRLIn =3- 5 TRLCurrent= 3- 5TRLTarget= 6

14

KeyCollaborators:• PTCteamatMSFC• AlFerland &RobEgerman(Harris)

Predictive Thermal Control (PTC) Technology for Stable Telescopes

PI: H. Philip Stahl/MSFC

TRLIn = 3 TRLCurrent = 3 TRLTarget= 4- 5(valuesdependonspecifictechnology)

ObjectivesandKeyChallenges:• Validatemodelsthatpredictthermalopticalperformanceofreal

mirrorsandstructurebasedontheirstructuraldesignsandconstituentmaterialproperties,i.e.CTEdistribution,thermalconductivity,thermalmass,etc.

• Derivethermalsystemstabilityspecificationsfromsciencedrivenwavefrontstabilityrequirement.

• DemonstrateutilityofPTCsystemforachievingthermalstability.SignificanceofWork:• Thermallystablespacetelescopesenablethedesiredscienceof

potentialHabExandLUVOIRmissions.• Integratedmodelingtoolsenablebetterdefinitionofsystemand

componentengineeringspecifications

Approach:• Science-drivensystemsengineering• Maturetechnologiesrequiredtoenablehighestpriorityscienceand

resultinhigh-performance,low-cost,low-risksystem• Maturetechnologyinsupportof2020Decadalprocess

CurrentFundedPeriodofPerformance:Jan2017– Dec2020

RecentAccomplishments:ü FactfindingmeetingswithHarrisandXRCFregardingscheduleand

resourcerequirements.

NextMilestones:• Developdetailedschedulethatcloseswithbudget.• High-FidelityCTEmapof1.5mULEAMTD-2mirror• ReflectivecoatingofAMTD-2mirror• SpecificationofThermalControlSystemApplications:• Flagshipopticalmissions;Explorer-typeopticalmissions• DepartmentofDefenseandcommercialobservations