CMBPol Mission Concept Study. Stephan Meyer Unversity of Chicago August 26, 2008

Transcription

1 CMBPol Mission Concept Study Stephan Meyer Unversity of Chicago August 26, 2008

2 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 Stephan Meyer 2

3 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. ROSES 2007 NNH07ZDA001N Appendix D.12 Stephan Meyer 3

4 Decadal Surveys 1990 Bahcall 2000 McKee-Taylor 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. Stephan Meyer 4

5 1990 5

6 TABLE 1.1 Prioritized Initiatives and Estimated Federal Costs for the Decade 2000 to 2010 Ground-based a Cost b Space-based c Cost b ($M) ($M) Major Initiatives Giant Segmented Mirror Telescope (GSMT) d 350 Next Generation Space Telescope (NGST) d 1,000 Expanded Very Large Array (EVLA) d 140 Constellation-X Observatory (Con-X) 800 Large-aperture Synoptic Survey Telescope 170 Terrestrial Planet Finder (TPF) e 200 (LSST) Single Aperture Far Infrared (SAFIR) 100 Observatory e Subtotal ground-based 660 Subtotal space-based 2, Moderate Initiatives Telescope System Instrumentation Program 50 Gamma-ray Large Area Space Telescope 300 (TSIP) (GLAST) d Advanced Solar Telescope (AST) d 60 Laser Interferometer Space Antenna 250 Square Kilometer Array (SKA) technology 22 (LISA) d development Solar Dynamics Observatory (SDO) 300 Combined 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) 26 South Pole Submillimeter-wave Telescope 50 (SPST) Subtotal ground-based 254 Subtotal space-based 1,350 Small Initiatives National Virtual Observatory (NVO) 15 National Virtual Observatory (NVO) 45 Laboratory Astrophysics Program 5 Advanced Cosmic-ray Composition 100 Low 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 14 Program Ultralong-Duration Balloon Program 35 Subtotal ground-based 42 Subtotal space-based 264 Total ground-based 956 Total space-based 3,714 6 DECADE TOTAL 4,670

7 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. Stephan Meyer 7

8 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 Stephan Meyer 8

9 Necessary Steps 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. Stephan Meyer 9

10 Necessary Steps 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 Stephan Meyer 10

11 What should the plan be? The plan has still to evolve over the next four months while the study is being developed. On the most general level: There is a programmatic hold on a start of a mediumscale 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. Stephan Meyer 11

12 My ingoing thoughts on the best plan to present to the decadal panel is: 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. Stephan Meyer 12

13 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 middecade. A central issue: Should the plan promote a space mission now or one following 5 years of further results from suborbital experiments and Planck? Stephan Meyer 13

14 Study Plan PI S. Meyer Workshop: Theory, Ancillary Science Foregrounds S. Dodelson Mission Cost Studies Detailed Study: Foregrounds A. Cooray Detailed Study: Lensing M. Zaldarriaga Workshop: Systematics Scan strategies Template missions G. Hinshaw/J. Ruhl Detailed Study: Amplifier Mission M.Seiffert/C.Lawrence Detailed Study: Scanning Strategies K. Gorski Detailed Study: Foreground/ feeds L. Page/J. Dunkley Workshop: Technologies Detector systems Optical systems K. Irwin/S. Hanany Detailed Study: Bolometer Mission J. Bock Detailed Study: Optics A. Lee Detailed Study: Polarization Systematics B. Keating Workshops Detailed Studies Organizational connection Line of interaction 14

15 >160 people so far have a part in the CMBpol Study Peter Adshead Alexandre Amblard Amjad Ashoorioon Carlo Baccigalupi Nicola Bartolo Daniel Baumann Rachel Bean Maria Beltran Dominic Benford Chuck Bennett James Bock Julian Borrill Latham Boyle Emory Bunn Clarence Chang Xingang Chen Daniel Chung Sarah Church David Chuss Asantha Cooray Paolo Creminelli Sudeep Das Clive Dickinson Michael DiPirro Matt Dobbs Greg Dobler Scott Dodelson Olivier Dore Jessie Dotson Thomas Downes William Duncan Joanna Dunkley Cora Dvorkin Richard Easther Joseph Eimer Hans-Kristian Eriksen Fabio Finelli Douglas Finkbeiner David Finley Dale Fixsen Raphael Flauger Pablo Fosalba Joseph Fowler Aurelien Fraisse Todd Gaier Nick Gnedin Krzysztof Gorski Joshua Gundersen Shaul Hanany Makoto Hattori Marijke Haverkorn Masashi Hazumi Mark Hertzberg James Hinderks Gary Hinshaw Chris Hirata Wayne Hu Howard Hui Kent Irwin Mark Jackson Ronnie Jansson Brad Johnson Dean Johnson William Jones Katherine Jones-Smith Shamit Kachru Kenji Kadota Manoj Kaplinghat Boris Karasik Brian Keating Justin Khoury William Kinney Lloyd Knox Alan Kogut Eiichiro Komatsu John Kovac Lawrence Krauss Chao-Lin Kuo Rich Lai Andrew Lange Charles Lawrence Adrian Lee Julien Lesgourgues Andrew Liddle Adam Lidz Michele Liguori Eugene Lim Marilena Loverde Antonio Magalhaes Mario Magalhaes John Marriner Victoria Martin Sabino Matarrese Harsh Mathur Benjamin Mazin Liam McAllister Jeff McMahon Alessandro Melchiorri Gary Melnick Stephan Meyer Amber Miller Michael Mortonson Samuel Moseley Hogan Nguyen Alberto Nicolis Peng Oh Lyman Page Hiranya Peiris John Peoples Nicolas Phillips Elena Pierpaoli Levon Pogosian Clement Pryke Paul Richards Antonio Riotto Graca Rocha Christopher Ruf John Ruhl Virendra Sarohia Emiliano Sefusatti Leonardo Senatore Pasquale Serpico Paolo Serra Sarah Shandera Meir Shimon Peter Shirron Robert Silvererg Eva Silverstein Jean Slaughter Eric Smith Kendrick Smith Tristan Smith Glenn Starkman Albert Stebbins Jason Steffen Radek Stompor Osamu Tajima Peter Timbie Takayuki Tomaru Ray Tomlin Huan Tran Gregory Tucker Amol Upadhye John Vaillancourt Wessel Valkenburg Pascal Vaudrevange Marcellla Veneziani Licia Verde Joaquin Vieira Andre Waelkens Ben Wandelt David Wands Scott Watson William Wester Bruce Winstein Edward Wollack Maik Wolleben Mark Wyman Amit Yadav Oliver Zahn Matias Zaldarriaga Jonas Zmuidzinas Jonathan Zwart Stephan Meyer 15

16 Mission studies Study Plan - 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 Stephan Meyer 16

17 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. * This is not just the US CMB community -- it is all scientists who have an interest in the outcome. Stephan Meyer 17

18 Input from the community (continued) - Workshop on theory and foregrounds last month - Organized by Scott Dodelson - Inflation - Reionization - Lensing - Foreground removal - Foreground science Stephan Meyer 18

19 Input from the community (continued) - 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 Stephan Meyer 19

20 Input from the community (continued) - 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. Stephan Meyer 20

21 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). Stephan Meyer 21

22 CMBPol Study Information CMBPol Website: Theory Workshop, June 23-26, 2008, Fermilab Systematics Workshop, July 28-30, 2008, Annapolis, MD Technology Workshop, August 25-28, 2008, Boulder, CO Stephan Meyer 22