B mode from Space -- Part 1: The Science goals, status of spaceborne projects, foregrounds (Dec 10 -12), Part 2: Mission design, technologies and challenges for the spaceborne observations (Dec 14 -16) --

Asia/Tokyo
Description
Purpose of this Workshop:
The goal of the workshop is to discuss the science goals, status of CMB polarization projects, foregrounds and mission design, technologies and challenges for the spaceborne observations of CMB polarization to detect primordial gravitational waves and thus to prove the inflation theory. The workshop will be the first meeting where the LiteBIRD mission is focused on.

Dates: Dec 10 (Thu) - 16 (Wed), 2015 

Part 1: Dec. 10 -12th: the science goals, status of spaceborne projects, foregrounds
 
Part 2: Dec. 14 -16th: mission design, technologies and challenges for the spaceborne observations

Venue: Lecture Hall (1F), Kavli IPMU main building 

Program: available

Organizers: M. Hasegawa (KEK), M. Hazumi (Kavli IPMU/KEK), H. Ishino (Okayama), T. Matsumura (JAXA), Y. Sekimoto (NAOJ),  H. Sugai (Kavli IPMU), N. Katayama (Kavli IPMU)

Contact Address: : Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8583, Japan

Sponsors:
The workshop is supported by the JSPS core-to-core program

Note:
Funding of the core-to-core program consists of matching funds from participating countries and thus we cannot support travel expense for attendants coming from ourside Japan.

file file
JSPS
Participants
  • Abigail Crites
  • Adrian Lee
  • Agnes Dominjon
  • Akito Kusaka
  • Al Kogut
  • Andrea Catalano
  • Anna Mangilli
  • Anton Timur Jaelani
  • Ari Cukierman
  • Aritoki Suzuki
  • Atsuko Kibayashi
  • Benjamin Westbrook
  • Blake Sherwin
  • Brandon Hensley
  • Brendan Crill
  • Brian Keating
  • Bruno Maffei
  • Carlo Baccigalupi
  • Chao-Lin Kuo
  • Chiko Otani
  • Cora Dvorkin
  • dai yamazaki
  • Dale Li
  • Darcy Barron
  • Eiichiro Komatsu
  • Enrique Martinez-Gonzalez
  • Eric Hivon
  • Eric Linder
  • Eric Switzer
  • Eric Wilcots
  • Flavien Vansyngel
  • Flavio Gatti
  • Francois Boulanger
  • François R. Bouchet
  • Fumiya Irie
  • Gerard Vermeulen
  • Giampaolo Pisano
  • Giovanni Signorelli
  • Giulio Fabbian
  • Grain Julien
  • Guillaume Patanchon
  • Hajime Sugai
  • Hannes Hubmayr
  • Haruki Nishino
  • Hiroaki Kanai
  • Hiroaki Yamamoto
  • Hirokazu Ishino
  • Hiroyuki Tashiro
  • Hitoshi Kiuchi
  • Hsiaomei Sherry Cho
  • Jacques Delabrouille
  • Jae Hwan Kang
  • Jan Tauber
  • Jeff McMahon
  • Jo Dunkley
  • Jonathan Aumont
  • Jonathan White
  • Josquin Errard
  • Julian Borrill
  • Kam Arnold
  • Kaori Hattori
  • Kazuhisa Mitsuda
  • Kazunori Kohri
  • Keisuke Shinozaki
  • Kenichiro Nigo
  • Kent Irwin
  • Kimihiro KIMURA
  • Kiyotomo Ichiki
  • Koji Kawabata
  • Krzysztof Gorski
  • Kunimoto Komatsu
  • Lionel DUBAND
  • Makoto Ito
  • Makoto NAGAI
  • Marco Incagli
  • Maresuke Shiraishi
  • Marian Douspis
  • Martin Bucher
  • Martino Calvo
  • Masanori Inoue
  • Masashi Hazumi
  • Masato Naruse
  • MASAYA HASEGAWA
  • Mathieu Remazeilles
  • Matt Dobbs
  • Matthieu Tristram
  • Nicoletta Krachmalnicoff
  • Nils Halverson
  • nobu katayama
  • Noriko Yamasaki
  • Paolo Natoli
  • Patricio Vielva
  • Peter Shirron
  • Radek Stompor
  • Rishi Khatri
  • Ryo Nagata
  • Ryuichi Takahashi
  • Samantha Stever
  • Sarah Kernasovskiy
  • Satoru TAKAKURA
  • Sayuri TAKATORI
  • Shaul Hanany
  • Shibo Shu
  • Shigeyuki Sekiguchi
  • Shingo Kashima
  • Soumen Basak
  • Suguru Takada
  • Tadayasu Dotani
  • Takaho Hamada
  • Takeo Kawasaki
  • Takuro Fujino
  • Taro Mori
  • Ted Kisner
  • Tetsu Yamashita
  • Thiem Hoang
  • Tomotake Matsumura
  • Toshiya Namikawa
  • Tucker Elleflot
  • Tuhin Ghosh
  • Walt Ogburn
  • Yasuo Nakamura
  • Yasuto Hori
  • yoshihiko oyama
  • Yoshiki Akiba
  • Yosuke Kida
  • Yosuke Yamada
  • Yuji Chinone
  • Yuki Sakurai
  • Yutaro Sekimoto
  • Yuuko SEGAWA
    • 12:30 13:00
      Registration 30m

      Please pay 6000 yen (exact cash) if you attend bancket

    • 13:00 14:50
      Cosmology
      • 13:00
        Welcome Hitoshi Murayama (Kavli IPMU) 5m
        Speaker: Dr Hitoshi Murayama (Kavli IPMU/UCB)
      • 13:05
        Why B mode? Eiichiro Komatsu(MPA) 30m
        Speaker: Dr Eiichiro Komatsu (MPA)
        Slides
      • 13:35
        Why do we need dr < 0.001 (Lyth bounds etc.) Kazunori Kohri (KEK) 25m
        Speaker: Dr Kazunori Kohri (KEK)
        Slides
      • 14:00
        Lensing B mode at low ell 25m
        Speaker: Dr Toshiya Namikawa
        Slides
      • 14:25
        The information hidden in the anisotropies of the CMB spectral distortions Khatri TIFR 25m
        Speaker: Dr Rishi Khatri (TIFR)
        Slides
    • 14:50 15:20
      Teatime 30m
    • 15:20 17:00
      Cosmology
      • 15:20
        Large scale EE and tau - Jo Dunkley (Oxford) 25m
        Speaker: Dr Jo Dunkley (Oxford)
        Slides
      • 15:45
        New Physics from an All-Sky Polarization Experiment Cora Dvorkin (Harvard) 25m
        Speaker: Dr Cora Dvorkin (Harvard)
        Slides
      • 16:10
        Tensor mode bispectrum - Maresuke Shiraishi (Kavli IPMU) 25m
        Speaker: Dr Maresuke Shiraisi (Kavli IPMU)
    • 08:30 09:00
      Registration 30m

      Please pay 6000 yen(exact cash) if you attend banquet

    • 09:00 10:40
      Foreground
      Convener: Kiyotomo Ichiki
      • 09:00
        LiteBIRD as a radio transient factory Yoshiki Inoue ISAS 25m
        Speaker: Dr Yoshiyuki Inoue (ISAS/JAXA)
        Slides
      • 09:25
        Diffuse Synchrotron Emission in the Milky Way Eric Wilcots (Madison) 25m
        Speaker: Dr Eric Wilcots (Wisconsin)
        Slides
      • 09:50
        The Physics of Polarized Dust Emission Brandon Hensley (JPL) 25m
        A population of aligned, aspherical grains will emit linearly polarized radiation from infrared to microwave wavelengths. I will review the physics of dust polarization, focusing on the factors that determine the level and frequency dependence of the infrared and microwave emission, such as magnetic field geometry, depolarization, and the relative contribution of various grain materials to the total emission. Particular emphasis will be given to uncertainties in current dust models and the adequacy of simple parametric fits to the polarized dust SED.
        Speaker: Dr Brandon Hensley (Princeton/JPL)
        Slides
      • 10:15
        Magnetic field and Polarized dust - F. Boulanger (IAS) 25m
        Speaker: Dr Francois Boulanger (IAS)
        Slides
    • 10:40 11:10
      Coffee Break 30m
    • 11:10 12:25
      Foreground
      Convener: Kiyotomo Ichiki
      • 11:10
        Foreground modelling Jacques Delabrouille (APC) 25m
        Speaker: Dr Jacques Delabrouille (APC)
        Slides
      • 11:35
        Foreground removal: Planck Jonathan Aumont (IAS) 25m
        Speaker: Dr Jonathan Aumont (IAS)
        Slides
      • 12:00
        Foreground removal: Maximum likelihood palametric Josquin Errard (ILP) 25m
        Speaker: Dr Josquin Errard (ILP)
        Slides
    • 12:25 13:30
      Workshop PHOTO and then Lunch 1h 5m
    • 13:30 15:10
      Foreground
      Convener: Dr Carlo Baccigalupi
      • 13:30
        Foreground cleaning for LiteBIRD using NILC Soumen Basak (SISSA) 25m
        Speaker: Dr Soumen Basak (SISSA)
        Slides
      • 13:55
        Foreground removal: pixel domain Ichiki (Nagoya) 25m
        Speaker: Dr Kiyotomo Ichiki (Nagoya)
        Slides
      • 14:20
        A new method to produce realizations of Galactic polarizations maps Flavien Vansyngel (IAS) 25m
        Speaker: Dr Flavien Vansyngel (IAS)
        Slides
      • 14:45
        Relevance of diffuse polarized foreground emission for B-mode experiments on the degree angular scale KRACHMALNICOFF, Nicoletta (UNIM) 12m
        Speaker: Dr Nicoletta KRACHMALNICOFF (UNIM)
        Slides
      • 14:57
        Sensitivity and foreground modelling for large-scale CMB B-mode polarization satellite missions REMAZEILLES, Mathieu (Manchester) 12m
        Speaker: Dr Mathieu REMAZEILLES (Manchester)
        Slides
    • 15:10 15:35
      One minute poster talks
    • 15:35 16:35
      Poster and TeaTime 1h
    • 16:35 18:00
      Foreground
      • 16:35
        Discussion Modelator Jo Dunkley 55m
        Slides
    • 09:00 10:00
      Experimental status
      • 09:00
        Review of ground-based CMB experiments Kam Arnold (Wisconsin) 35m
        Speaker: Dr Kam Arnold (Wisconsin)
        Slides
      • 09:35
        Status of Baloon projects and lessons leanred from Baloon projects for LiteBIRD 25m
        Speaker: Dr Shaul Hanany (Minnesota)
        Slides
    • 10:00 10:30
      Coffee Break 30m
    • 10:30 12:15
      Experimental status
      • 10:30
        LiteBIRD mission definition Masashi Hazumi (KEK/Kavli IPMU) 25m
        Speaker: Dr Masashi Hazumi (KEK/Kavli IPMU)
        Slides
      • 10:55
        PIXIE Al Kogut (GSFC) 25m
        Speaker: Dr Al Kogut (GSFC)
        Slides
      • 11:20
        Europian spaceborne plans (Jacques) 25m
        Speaker: Dr Jacques Delabrouille (APC)
        Slides
      • 11:45
        Part one summary and expectations for LiteBIRD Kris Gorski (JPL) 30m
        Speaker: Dr Kris Gorski (JPL)
        Slides
    • 08:30 09:00
      Registration 30m

      Please pay 6000 yen (exact cash) if you attend banquet

    • 09:00 10:00
      LiteBIRD system design
      • 09:00
        welcome and goals 5m
      • 09:05
        LiteBIRD system definition Masashi Hazumi (KEK.Kavli IPMU) 30m
        Speaker: Dr Masashi Hazumi (KEK/Kavli IPMU)
        Slides
      • 09:35
        US-MO Adrian Lee (UCB) 25m
        Speaker: Dr Adrian Lee (UCB)
        Slides
    • 10:00 10:50
      Data Analysis
      • 10:00
        Planck lessons learned: computing Julian Borrill (LBNL) 25m
        Speaker: Dr Julian Borrill (LBNL)
        Slides
      • 10:25
        Polarised beam window functions, and other systematic effects, seen in Planck Eric Hivon (IAP) 25m
        Speaker: Dr Eric Hivon (IAP)
        Slides
    • 10:50 11:20
      CoffeeBreak 30m
    • 11:20 12:35
      Data Analysis
      • 11:20
        the production of the Maps and the low-l analysis 25m
        Speaker: Dr Matthieu Tristram (LAL)
        Slides
      • 11:45
        the E and B modes measurements at large angular scales Anna Mangilli IAS 25m
        Speaker: Dr Anna Mangilli (IAS)
        Slides
      • 12:10
        Lensing removal Blake Sherwin (UCB) 25m
        Speaker: Dr Blake Sherwin (UCB)
        Slides
    • 12:35 13:35
      Workshop PHOTO No. 2 and then Lunch 1h
    • 13:35 15:15
      Data Analysis
      • 13:35
        Simulation Ishino (Okayama) 25m
        Speaker: Dr Hirokazu Ishino (Okayama)
        Slides
      • 14:00
        Cosmic ray seen by Planck Andrea Catalano (Neel) 25m
        Speaker: Dr Andrea Catalano (Neel)
        Slides
      • 14:25
        Beam and time constant calibration and systemtics 25m
        Speaker: Dr Brendan Crill
        Slides
      • 14:50
        Systematic error analysis 25m
        Speaker: Dr Ryo Nagata
        Slides
    • 15:15 15:45
      TeaBreak 30m
    • 15:45 18:00
      Modulator
      • 15:45
        Pol. Modulator Akito Kusaka (LBNL) 25m
        Speaker: Dr Akito Kusaka (LBNL)
        Slides
      • 16:10
        AHWP based modulator in EBEX Shaul Hanany Minnesota 25m
        Speaker: Dr Shaul Hanany (Minnesota)
        Slides
      • 16:35
        Pol Modulator for LiteBIRD T. Matsumura (JAXA) 25m
        Speaker: Dr Tomotake Matsumura (JAXA)
      • 17:00
        Metal mesh HWP and filter technology Giampaolo Pisano (Cardiff) 25m
        Speaker: Dr Giampaolo Pisano (Cardiff)
      • 17:25
        The QUIJOTE experiment and its modulator Enrique Martinez Gonzalez (ifca) 25m
        Speaker: Dr Enrique Martinez Gonzalez (ifca)
        Slides
    • 08:30 09:00
      Registration 30m

      Please pay 6000 yen(exact cash) if you attend banquet

    • 09:00 10:40
      Telescope
      • 09:00
        Optics requrements and Telescope design T. Matsumura (JAXA) 25m
        Speaker: Dr Tomotake Matsumura (JAXA)
        Slides
      • 09:25
        Planck lessons learned: Telescope and optics design Jan Tauber (ESA) 25m
        Speaker: Dr Jan Tauber (ESA)
        Slides
      • 09:50
        Optics Design for LiteBIRD and realization plan Hajime Sugai (Kavli IPMU) 25m
        Speaker: Dr Hajime Sugai
        Slides
      • 10:15
        Characterization of the LiteBIRD telescope using Physical Optics simulation Kimihiro Kimura (OPU) 25m
        Speaker: Dr Kimihiro Kimura (OPU)
        Slides
    • 10:40 11:10
      CoffeeBreak 30m
    • 11:10 11:35
      Telescope
      • 11:10
        metamaterial optics and experience from ACTPol for Jeff McMahon (UMICH) 25m
        Speaker: Dr Joannes Hubmayr
        Slides
    • 11:35 12:30
      One minute poster talks
    • 12:30 14:30
      Poster and Lunch 2h
    • 14:30 15:45
      Cryogenics
      • 14:30
        From Planck to LiteBIRD 25m
        Speaker: Dr Gerard Vermeulen
        Slides
      • 14:55
        Cryogenics overview for LiteBIRD 25m
        Speaker: Dr Kazuhisa Mitsuda (ISAS)
        Slides
      • 15:20
        Development status of the CEA cooler Lionel DuBand CEA 25m
        Speaker: Dr Lionel DuBand (CEA)
        Slides
    • 15:45 16:15
      Teatime 30m
    • 16:15 17:55
      Cryogenics
      • 16:15
        ADR(Goddard) Peter Shirron GSFC 25m
        Speaker: Dr Peter Shirron (GSFC)
        Slides
      • 16:40
        PIPER's Continuous Adiabatic Demagnetization Refrigerator Eric Switzer (GFSC) 25m
        The Primordial Inflation Polarization ExploreR (PIPER) is a balloon-borne instrument being developed at NASA Goddard. It will measure the CMB polarization at 200, 270, 350, and 600 GHz across 85% of the sky, seeking the B-mode signature of inflationary gravitational waves on large angular scales. It employs a Continuous Adiabatic Demagnetization Refrigerator (CADR) to cool its detectors to 100 mK. The CADR architecture is robust (solid-state), stable, and efficient, so is of great interest to future CMB missions. I will describe PIPER's CADR, its thermodynamics, and hardware with contrast to single-shot coolers. Magnetic fields and temperature stability are key instrumental constraints for PIPER's Transition-edge superconducting detectors and readout chain. I will describe recent operation of the CADR, its characterization, stability and magnetic fields.
        Speaker: Dr Eric Switzer (GFSC)
        Slides
      • 17:05
        Dilution option 25m
        Speaker: Dr Keisuke Shinozaki (JAXA)
        Slides
      • 17:30
        Experience from Astro-H 25m
        Speaker: Dr Noriko Yamasaki (ISAS)
        Slides
    • 19:00 21:00
      Banquet at Kashiwanoha oak village 2h
    • 09:00 10:35
      Detector
      • 09:00
        Overview of the LiteBIRD Focal Plane Toki Suzuki (UCB) 20m
        I will give overview of a focal plane unit proposed by the US LiteBIRD team. The focal plane unit consists of sub-kelvin cooler, transition edge sensor bolometric detector, readout electronics, and mechanical supports. The baseline design is based on proven technologies from current ground and balloon based CMB experiments lead by member of the US LiteBIRD team. Space environment and sensitivity target of the LiteBIRD mission introduces challenges that need to be carefully studied and tackled. Organization of the group and the status will be presented.
        Speaker: Dr Aritoki Suzuki (UCB)
        Slides
      • 09:20
        Planck lessons learned Guillaume Patanchon (APC) 25m
        The Planck satellite mission allowed to map the Cosmic MicrowaveBackground anisotropies and polarization on the full sky withunprecedented accuracy. The precision of the measurements was reachedthanks to the thermal stability of the instruments which includePolarization Sensitive Bolometers cooled down to 100 mK for the HighFrequency Instrument, but required carefull processing of systematicspresent in data. I will review the main sources of systematics relatedto Planck HFI detectors and the main difficulties encountered tocharaterize and process them. Some of those effects were not expectedbefore the flight. The main effects include the cosmic ray interactionwith detectors, long time constants, analog to digital convertornon-linearities, band pass mismatch, as well as 1/f noise.
        Speaker: Dr Guillaume Patanchon (APC)
        Slides
      • 09:45
        Development and Fabrication of the Lenslet Coupled Sinuous Antenna TES Bolometer Arrays for the LiteBIRD Low and Mid Frequency Focal planes Ben Westbrook (UCB) 25m
        We discuss one of the two candidate detector technologies for the LiteBIRD satellite mission: lenslet-coupled sinuous antenna transition edge sensor (TES) detector arrays. We discuss the current status and future challenges for the design, fabrication, and characterization of this technology for the LiteBIRD low and mid frequency (LF and MF, respectively) focal planes. These design of these devices was developed by UC Berekeley and the first LiteBIRD LF prototype detectors were recently fabricated there as well. In addition to the development of this technology for LiteBIRD, both the POLARBEAR-2 and SPT-3G collaborations will deploy focal planes composed of multi-chroic lenslet coupled sinuous antenna detectors in the next year and half. Despite the strong legacy of these detectors there exists many challenges to reliably engineer these devices for a satellite mission. The focus of this talk will be on building a robust and repeatable fabrication process, the tailoring of these detectors for lower optical loading, and accurately tuning the bands (including notch filters to avoid CO lines) to meet the specifications of the LiteBIRD mission. In addition to these tasks we will report on a study of the effects of high energy cosmic rays we expect in a space environment on the performance of this technology.
        Speaker: Dr Ben Westbrook
        Slides
      • 10:10
        NIST focal plane technology relevant for LiteBIRD Johannes Hubmayr (NIST) 25m
        I will discuss technology developed and fabricated at NIST that is relevant to the LiteBIRD satellite mission. This includes feedhorn-coupled, transition-edge-sensor (TES) polarimeter arrays, which are the baseline focal plane technology of the high frequency telescope as proposed in the US-contribution to the mission. Developed in collaboration with a large fraction of the US CMB community, feedhorn-coupled TES polarimeter arrays have been utilized in the South Pole Telescope Polarimeter (SPTpol) and the Atacama Cosmology Telescope Polarimeter (ACTPol). I will present an overview of the architecture; review on-sky performance; detail recent developments such as multichroic detector development on 150mm substrates for Advanced ACTPol and the production of 300 GHz arrays for the second flight of SPIDER; and comment on how to adapt the arrays for a space mission. Additionally, I will review SQUID-based multiplexer components designed and fabricated at NIST, which in the last decade have enabled over 30,000 mm/sub-mm bolometers to observe the sky from platforms around the world.
        Speaker: Dr Hannes Hubmayr (NIST)
        Slides
    • 10:35 11:05
      Coffee Break 30m
    • 11:05 12:30
      Detector
      • 11:05
        LiteBIRD Focal Plane Cryogenics and Mechanics Ari Cukierman (UCB) 25m
        The design of the LiteBIRD focal planes needs to balance cryogenic, mechanical, optical and electrical concerns. I will discuss the cryogenic and mechanical issues associated with these technologies with special emphasis on the unique challenges and uncertainties present in a space-based environment. Additionally, I will summarize baseline technologies and the requirements for the LiteBIRD sub-Kelvin cooler.
        Speaker: Mr Ari Cukierman (UCB)
        Slides
      • 11:30
        Frequency Domain Multiplexing Bolometer Readout Matt Dobbs (McGill) 20m
        The Digital Frequency Domain Multiplexing Bolometer Readout system is the baseline design for LiteBIRD. The overall system will be presented, with a focus on the warm electronics. The cold components will be described in the following talk. Results and status from Canadian-funded flight representative circuit board development will be overviewed.Key interface points, power consumption, and challenges that lay ahead to achieve the mission specifications will be summarized.
        Speaker: Dr Matt Dobbs (McGill)
        Slides
      • 11:50
        Cryogenic Readout Electronics Kam Arnold (Wisc) 20m
        will present the baseline architecture for all of the electrical components between the LiteBIRD detector wafers and the warm readout electronics. This baseline architecture is based on the requirements of the frequency domain multiplexing bolometer readout, which will be discussed by Professor Dobbs in the previous presentation. I will discuss the requirements that still need to be determined for these components, and the design decisions that these requirements still need to inform. I will discuss the POLARBEAR / Simons Array experience, and where I think the most significant component modification will be necessary from the hardware used in those instruments. This will lead into the discussion of SQUID requirements and design, which will be the topic of the following presentation by Professor Irwin.
        Speaker: Dr Kam Arnold (Wisconsin)
        Slides
      • 12:10
        SQUID in space, SQUID Readout Ken Irwin (SLAC) 20m
        Speaker: Dr Kent Irwin (SLAC)
        Slides
    • 12:30 13:30
      Lunch 1h
    • 13:30 14:45
      Detector
      • 13:30
        MKID Focal Plane 25m
        Speaker: Dr Yutaro Sekimoto (NAOJ)
        Slides
      • 13:55
        MKID feed and polarimeter 25m
        Speaker: Mr Shigeyuki Sekiguchi (naoj)
        Slides
      • 14:20
        MKID at Grenoble Martino Calvo (NEEL) 25m
        Speaker: Dr Martino Calvo (NEEL)
        Slides
    • 14:45 15:15
      TeaBreak 30m
    • 15:15 16:05
      Detector
      • 15:15
        MKID readout 25m
        Speaker: Dr Hitoshi Kiuchi (NAOJ)
        Slides
      • 15:40
        MKID development at NIST 25m
        Speaker: Dr Jiansong Gao (NIST)
        Slides
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