cmbpol mission concept...

CMBPol Mission Concept Study

Stephan MeyerUnversity of Chicago

August 26, 2008

Stephan Meyer CMBPol Technology, Agust 26, 2008

What is the point of this study?

To enhance the priority of inflation science within Physics and Astrophysics.

There is an opportunity to do this because the 2010 NRC Decadal Survey of Astrophysics will begin its work in the Fall 2008 and accept input from communities through early 2009.

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2008 NASA Statigic Mission Concept Studies

“The Astrophysics Division of the Science Mission Directorate solicits concept studies for strategic space flight science missions that may be carried out in the next decade or for which technology development funding is sought in the next decade.”

“The goal of the mission concept studies is to develop high-quality scientific, technical, and cost information to be used for future mission implementation and as input from the study teams to the Decadal Survey. “

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ROSES 2007 NNH07ZDA001N Appendix D.12


Decadal Surveys

The surveys take an overview of the state of astrophysics and make a prioritized list of recommendations for the upcoming decade.

The US funding agencies (NASA, NSF) pay close attention to these recomendations.

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1990“Bahcall”

2000“McKee-Taylor”

1990

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TABLE 1.1 Prioritized Initiatives and Estimated Federal Costs for the Decade 2000 to 2010

Ground-baseda Costb Space-basedc Costb($M) ($M)

Major InitiativesGiant Segmented Mirror Telescope (GSMT)d 350 Next Generation Space Telescope (NGST)d 1,000Expanded Very Large Array (EVLA)d 140 Constellation-X Observatory (Con-X) 800Large-aperture Synoptic Survey Telescope 170 Terrestrial Planet Finder (TPF)e 200

(LSST) Single Aperture Far Infrared (SAFIR) 100Observatory e

Subtotal ground-based 660 Subtotal space-based 2,100

Moderate InitiativesTelescope System Instrumentation Program 50 Gamma-ray Large Area Space Telescope 300

(TSIP) (GLAST)dAdvanced Solar Telescope (AST)d 60 Laser Interferometer Space Antenna 250Square Kilometer Array (SKA) technology 22 (LISA)d

development Solar Dynamics Observatory (SDO) 300Combined Array for Research in Millimeter- 11 Energetic X-ray Imaging Survey Telescope 150

wave Astronomy (CARMA)d (EXIST)Very Energetic Radiation Imaging Telescope 35 Advanced Radio Interferometry between 350

Array System (VERITAS) Space and Earth (ARISE)Frequency Agile Solar Radio telescope (FASR) 26South Pole Submillimeter-wave Telescope 50

(SPST)Subtotal ground-based 254 Subtotal space-based 1,350

Small InitiativesNational Virtual Observatory (NVO) 15 National Virtual Observatory (NVO) 45Laboratory Astrophysics Program 5 Advanced Cosmic-ray Composition 100Low Frequency Array (LOFAR) 8 Experiment for the Space Station (ACCESS)National Astrophysical Theory Postdoctoral 6 Augmentation of the Astrophysics Theory 30

Program Program Synoptic Optical Long-term Investigation 8 Laboratory Astrophysics Program 40

of the Sun (SOLIS) expansion National Astrophysical Theory Postdoctoral 14Program

Ultralong-Duration Balloon Program 35

Subtotal ground-based 42 Subtotal space-based 264

Total ground-based 956 Total space-based 3,714

DECADE TOTAL 4,670

2000

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Inflation science can be on a similar list in the 2010 Decadal Report if:

• the science case is compelling

• a coherent, realistic plan exists

• the CMB community speaks in unison.

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CMBPol Technology, Agust 26, 2008Stephan Meyer

Necessary Steps

1. Establish the fundamental importance of inflation science.‣ Cosmology‣ Astrophysics‣ Particle Physics

2. Document the experimental feasibility of significantly constraining inflationary models.

‣ Firm theoretical predictions of observables‣ The state of technology (two instrument studies)‣ Maturity of experimental techniques ‣ Deep understanding of systematics and foregrounds

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3. Get input from the broad scientific community.

‣ What we agree on.‣ What we do not agree on

- Document the various positions

- Identify the research and investigations needed to come to an optimum (acceptable) resolution

‣ Entire process is open to input from all. There will be a period of “Request for Comment” at all stages.

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Necessary Steps

CMBPol Technology, Agust 26, 2008Stephan Meyer 10

4. Develop a path to getting the most science out of the information available in the CMB polarization measurement in the next decade.

5. Generate a report for the NRC Decadal Survey on Astrophysics.‣ Influence the text of the survey‣ Establish a high priority for CMB inflation science

Necessary Steps


What should the plan be?

• There is a programmatic hold on a start of a medium-scale space mission because of the BEPAC findings.

• Much will be learned in the next 5 to 7 years from Planck and suborbital experiments and the research they inspire.

• This provides the opportunity to set the stage for developing an optimum mission with a compelling science case and mature technology and techniques.

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The plan has still to evolve over the next four months while the study is being developed.

On the most general level:


• Give a comprehensive overview of the importance of inflationary science for cosmology, astrophysics and physics.

• Outline the galactic and extra-galactic astrophysics which will come from a CMB polarization mission.

• Make an overview of the state of current technology and what we anticipate in the next 5 years.

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My ingoing thoughts on the best plan to present to the decadal panel is:


• Review the experimental techniques being developed.- Instrumentation- Systematics control- Analysis techniques- Foreground removal

• Make a strong case that this research will lead to a compelling space based mission proposal in mid-decade.

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A central issue: Should the plan promote a space mission now or one following 5 years of further results from suborbital experiments and Planck?

Workshop: Theory, Ancillary Science

ForegroundsS. Dodelson

Workshop: SystematicsScan strategies

Template missionsG. Hinshaw/J. Ruhl

Workshop: TechnologiesDetector systemsOptical systemsK. Irwin/S. Hanany

Detailed Study:

ForegroundsA. Cooray

Detailed Study:Scanning StrategiesK. Gorski

Detailed Study:Lensing

M. Zaldarriaga

Detailed Study:Foreground/

feedsL. Page/J. Dunkley

Workshops

Detailed Studies

Line of interaction

Detailed Study:OpticsA. Lee

Organizational connection

MissionCost

Studies

Detailed Study:Polarization SystematicsB. Keating

PIS. Meyer

Detailed Study:Amplifier Mission

M.Seiffert/C.Lawrence

Detailed Study:Bolometer Mission

J. Bock

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Study Plan


>160 people so far have a part in the CMBpol Study

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Peter AdsheadAlexandre AmblardAmjad AshoorioonCarlo BaccigalupiNicola BartoloDaniel BaumannRachel BeanMaria BeltranDominic BenfordChuck BennettJames BockJulian BorrillLatham BoyleEmory BunnClarence ChangXingang ChenDaniel ChungSarah ChurchDavid ChussAsantha CoorayPaolo CreminelliSudeep DasClive DickinsonMichael DiPirroMatt DobbsGreg DoblerScott DodelsonOlivier DoreJessie DotsonThomas DownesWilliam DuncanJoanna DunkleyCora DvorkinRichard EastherJoseph EimerHans-Kristian EriksenFabio FinelliDouglas FinkbeinerDavid FinleyDale Fixsen

Raphael FlaugerPablo Fosalba Joseph Fowler Aurelien FraisseTodd GaierNick GnedinKrzysztof GorskiJoshua GundersenShaul HananyMakoto HattoriMarijke HaverkornMasashi HazumiMark HertzbergJames HinderksGary HinshawChris HirataWayne HuHoward HuiKent IrwinMark JacksonRonnie JanssonBrad JohnsonDean JohnsonWilliam JonesKatherine Jones-SmithShamit KachruKenji KadotaManoj KaplinghatBoris KarasikBrian KeatingJustin KhouryWilliam KinneyLloyd KnoxAlan KogutEiichiro KomatsuJohn KovacLawrence KraussChao-Lin KuoRich LaiAndrew LangeCharles Lawrence

Adrian LeeJulien LesgourguesAndrew LiddleAdam LidzMichele LiguoriEugene LimMarilena LoverdeAntonio MagalhaesMario MagalhaesJohn MarrinerVictoria MartinSabino MatarreseHarsh MathurBenjamin MazinLiam McAllisterJeff McMahonAlessandro MelchiorriGary MelnickStephan MeyerAmber MillerMichael MortonsonSamuel MoseleyHogan NguyenAlberto NicolisPeng OhLyman PageHiranya PeirisJohn PeoplesNicolas PhillipsElena PierpaoliLevon PogosianClement PrykePaul RichardsAntonio RiottoGraca RochaChristopher RufJohn RuhlVirendra SarohiaEmiliano SefusattiLeonardo SenatorePasquale Serpico

Paolo SerraSarah ShanderaMeir ShimonPeter ShirronRobert SilverergEva SilversteinJean SlaughterEric SmithKendrick SmithTristan SmithGlenn StarkmanAlbert StebbinsJason SteffenRadek StomporOsamu TajimaPeter TimbieTakayuki TomaruRay TomlinHuan TranGregory TuckerAmol UpadhyeJohn VaillancourtWessel ValkenburgPascal VaudrevangeMarcellla VenezianiLicia VerdeJoaquin VieiraAndre WaelkensBen WandeltDavid WandsScott WatsonWilliam WesterBruce WinsteinEdward WollackMaik WollebenMark WymanAmit YadavOliver ZahnMatias ZaldarriagaJonas ZmuidzinasJonathan Zwart


Study Plan• Mission studies

- Develop template missions with well defined properties- Illustrate the capabilities we have today

- Serve as baselines for comparison of scan strategy and foreground subtraction methods

- Three templates will be used:

• EPIC, a concept proposed by Jamie Bock

• An intermediate (~10’) resolution study

• A large (~4’) resolution study

- A number of small studies on specific aspects of technology or scan simulations

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Study Plan

• Input from the community*

- Wide request for participation.

- Three workshops open to everyone on four central topics: Theory, Foregrounds, Systematics and Technology.

- Workshop summaries with an overview which will be public and have an opportunity for input from people who are not part of the workshops.

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*This is not just the US CMB community -- it is all scientists who have an interest in the outcome.


• Input from the community (continued)

- Workshop on theory and foregrounds last month

- Organized by Scott Dodelson

- Inflation

- Reionization

- Lensing

- Foreground removal

- Foreground science

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- Workshop on Systematics in 2 weeks. - Organized by Gary Hinshaw and John Ruhl

- Experience from experiments with data

- Plans for experiments in development and future

- Experiment simulation and analysis

- Workshop on Technology in late August- Organized by Shaul Hanany and Kent Irwin

- Detection techniques

- Optical coupling

- Bands and filters

- Readouts

- Cooling

- Polarization modulation

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- A group of participants will write a summary of each of the topics in the workshops.

- These will be summarized by the workshop organizers into a proceedings.

- The workshop proceedings along with presentation slides will be on the CMBpol website.

- They will provide the basis for the report to the decadal.

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• The development of the report.

- Starting in September interested participants will begin to write sections of the report based on the workshop proceedings.

- Drafts of the report will be on the CMBPol website for comment.

- In December, the report will be sent to reviewers, outside the CMB field.

- Starting in January, the writing group will generate the final report based on the reviewer comments.

• A final workshop in Chicago which summarizes the report in March 2009 (or a session in the APS and AAS Spring meetings).

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CMBPol Study Information• CMBPol Website:

http://cmbpol.uchicago.edu

• Theory Workshop, June 23 - 26, 2008, Fermilabhttp://astro.fnal.gov/cmb/Welcome.html

• Systematics Workshop, July 28 - 30, 2008, Annapolis, MD http://cmbpol.uchicago.edu/workshops/systematic2008

• Technology Workshop, August 25 - 28, 2008, Boulder, CO http://cmbpol.uchicago.edu/workshops/technology2008

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http://cmbpol.uchicago.edu/workshops/systematic2008




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