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CMB Decadal Study: What We Did. Activities funded by NASA proposal: PI Steve Meyer + entire CMB community Workshops: The Path to CMBPOL: Upcoming Measurement of CMB Polarization, Chicago July 1-3, 2009 Technology Development for a CMB Probe of Inflation, Boulder, 25-28 August 2008

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cmb decadal study what we did
CMB Decadal Study: What We Did

Activities funded by NASA proposal: PI Steve Meyer + entire CMB community


The Path to CMBPOL: Upcoming Measurement of CMB Polarization, Chicago July 1-3, 2009

Technology Development for a CMB Probe of Inflation, Boulder, 25-28 August 2008

Mitigating Systematic Errors, Annapolis, 28-30 July 2008

CMB Component Separation and the Physics of Foregrounds, Pasadena, 14-18 July 2008

Theory and Foregrounds, Fermilab, 23-26 June 2008

Workshop Reports:

Probing Inflation with CMB Polarization, Baumann et al. 2008, ArXiv 0811.3919

Gravitational Lensing, Smith et al. 2008, ArXiv 0811.3916

Reionization Science with the CMB, Zaldarriaga et al. 2008, ArXiv 0811.3918

Prospects for Polarized Foreground Removal, Dunkley et al. 2008, ArXiv 0811.3915

Foreground Science Knowledge and Prospects, Fraisse et al. 2008, ArXiv 0811.3920

The EPIC Intermediate Mission, Bock et al. 2009, ArXiv 0906.1188

Decadal White Papers:

1) The Origin of the Universe as Revealed Through the Polarization of the CMB (science)

2) Observing the Evolution of the Universe (science)

3) A Program of Technology Development and of Sub-Orbital Observations of CMB

Polarization Leading to and Including a Satellite Mission (programmatic)

See for a full summary

cmb decadal study what we asked for
CMB Decadal Study: What We Asked For

Technology and Detector Development

$40M for detector centers

$10M for university-based efforts

Suborbital Observations

$100M for ground based experiments

$50M for balloons ($10M augmentation)

Theory and Data Analysis

$20M for this activity

Satellite Mission Planning

$15M for planning ramping up

5. Mid-Decade Review to Assess Case for Satellite Mission


Transitioning from Sub-Orbital Program to Space

Phase A Start

Call for Proposals

Evaluation for Satellite

Program Office

Mission Planning

- Space systems design

- Set technology needs

Technology Development

- Center funding for arrays

- $1M/yr University directed


- Lensing, foregrounds, models

Balloon Experiments

- Technology implementation

- Systems development

- ‘Science-market’ driven

Ground-Based Experiments

- Technology implementation

- Systems development

- ‘Science-market’ driven



June 2009 EOS presentation

Satellite funding wedge not shown

These cost profiles are notional and have not been negotiated

with or agreed to by NASA HQ, the NSF, or the NIST


Evaluation for Start of Satellite Program in 2015

Expected State of CMB Polarization in 2015


- Lensing BB signal detected

- Either Inflationary B-modes detected,

Case for satellite start very compelling in 2015

- Or upper limit to r <0.05

Reassess role for satellite in 2015


- Measured in deep regions from ground & balloons

- Measured over entire sky by Planck

- Subtraction tested both deep and shallow

Technology readiness

- Focal plane arrays to TRL = 6

Systematic error control

- Polarization effects, E → B conversion, etc.

We are not recommending a fixed metric for a satellite start.

We are recommending a 2015 evaluation for a satellite start.

June 2009 EOS presentation

Field will be ready to transition to a satellite experiment mid-decade,

fully armed with scientific case and demonstrated technology

We recommend:

1) Funding the program proposed in white paper through 2015

2) External evaluation in 2015 of case for satellite start

cmb recommendations in astro2010
CMB Recommendations in Astro2010


Inflation Probe Technology NASA $60-200M #2 Medium

“CMB/inflation technology development and preparation for a possible mission beyond 2020”

“A successful detection of B-modes from inflation could trigger a mid-decade shift in focus...

However, the level of late-decade investment required is uncertain, and the appropriate level

should be studied by a decadal survey independent advice committee review. It could range

between… $60M and $200M”

Intermediate Technology NASA ~$100M unranked

Mid-Scale Innovations Program NSF $93-200M #2 Large

CMB Measurements “medium” 1 of 8 examples

  • The Good News
  • Astro2010 recommendations closely reflect the community requests
  • NASA has responded with a IP technology line and planned augmentations to the theory and sub-orbital programs
  • Concerns = Areas for Input to PhysPAG
  • 1) Technology program
  • - needs strong support to initiate and sustain (note amount << $60M in notional budget)
  • - how this money is allocated is not specified
  • - use of NASA technology on ground-based CMB experiments
  • 2) Mid-decadal review
  • - need to continue advocacy for this plan
  • - large change in CMB planning could result from a successful outcome
  • - formulation of such a review is not clear: DSIAC, NRC? NSF participation?
  • 3) Advocating for opportunities in the next 5 years
  • - sub-orbital and theory augmentations: usually competed
  • - NASA may start large sub-orbital MO program in FY12
  • - will mid-scale ground-based initiative at NSF be started?
  • 4) Mission planning
  • - No clear planned implementation for this request
  • - IXO/LISA offices are being phased out
  • - useful for coordination with e.g. ESA and JAXA
  • - definition of requirements for space - systematics, foregrounds, etc