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) --

10 Dec 2015, 09:30 → 16 Dec 2015, 19:05 Asia/Tokyo

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

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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.

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JSPS jsps.jpg

Thursday 10 December

12:30 Registration

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

Cosmology

1 Welcome Hitoshi Murayama (Kavli IPMU)

Speaker: Dr Hitoshi Murayama (Kavli IPMU/UCB)

2 Why B mode? Eiichiro Komatsu(MPA)

Speaker: Dr Eiichiro Komatsu (MPA)

Slides core2core_komatsu.pdf

3 Why do we need dr < 0.001 (Lyth bounds etc.) Kazunori Kohri (KEK)

Speaker: Dr Kazunori Kohri (KEK)

Slides Kohri20151210.pdf

4 Lensing B mode at low ell

Speaker: Dr Toshiya Namikawa

Slides 2015-12-12_Namikawa.pdf

5 The information hidden in the anisotropies of the CMB spectral distortions Khatri TIFR

Speaker: Dr Rishi Khatri (TIFR)

Slides khatri_spectral_distortions_litebird_2015.pdf

14:50 Teatime

Cosmology

6 Large scale EE and tau - Jo Dunkley (Oxford)

Speaker: Dr Jo Dunkley (Oxford)

Slides litebird_dunkley.pdf

7 New Physics from an All-Sky Polarization Experiment Cora Dvorkin (Harvard)

Speaker: Dr Cora Dvorkin (Harvard)

Slides Dvorkin_LiteBIRDworkshop_December2015.pdf

8 Tensor mode bispectrum - Maresuke Shiraishi (Kavli IPMU)

Speaker: Dr Maresuke Shiraisi (Kavli IPMU)

Friday 11 December

08:30 Registration

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

Foreground

Convener: Kiyotomo Ichiki

9 LiteBIRD as a radio transient factory Yoshiki Inoue ISAS

Speaker: Dr Yoshiyuki Inoue (ISAS/JAXA)

Slides yinoue_151211_LiteBird.pdf

10 Diffuse Synchrotron Emission in the Milky Way Eric Wilcots (Madison)

Speaker: Dr Eric Wilcots (Wisconsin)

Slides wilcots_2015_foregrounds_b-mode.pdf

11 The Physics of Polarized Dust Emission Brandon Hensley (JPL)

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 hensley.pdf

12 Magnetic field and Polarized dust - F. Boulanger (IAS)

Speaker: Dr Francois Boulanger (IAS)

Slides IPMU_Boulanger_111215.pdf

10:40 Coffee Break

Foreground

Convener: Kiyotomo Ichiki

13 Foreground modelling Jacques Delabrouille (APC)

Speaker: Dr Jacques Delabrouille (APC)

Slides PSM-JDelabrouille-IPMU2015-lowresolution.pdf

14 Foreground removal: Planck Jonathan Aumont (IAS)

Speaker: Dr Jonathan Aumont (IAS)

Slides Aumont_BmodesFromSpace_Tokyo_December11-2015.pdf

15 Foreground removal: Maximum likelihood palametric Josquin Errard (ILP)

Speaker: Dr Josquin Errard (ILP)

Slides Errard_parametric_fgs_cleaning.pdf

12:25 Workshop PHOTO and then Lunch

Foreground

Convener: Dr Carlo Baccigalupi

16 Foreground cleaning for LiteBIRD using NILC Soumen Basak (SISSA)

Speaker: Dr Soumen Basak (SISSA)

Slides litebird_tokyo_basak_soumen.pdf

17 Foreground removal: pixel domain Ichiki (Nagoya)

Speaker: Dr Kiyotomo Ichiki (Nagoya)

Slides talk_ichiki.pdf

18 A new method to produce realizations of Galactic polarizations maps Flavien Vansyngel (IAS)

Speaker: Dr Flavien Vansyngel (IAS)

Slides vansyngel.pdf

19 Relevance of diffuse polarized foreground emission for B-mode experiments on the degree angular scale KRACHMALNICOFF, Nicoletta (UNIM)

Speaker: Dr Nicoletta KRACHMALNICOFF (UNIM)

Slides Krachmalnicoff.pdf

20 Sensitivity and foreground modelling for large-scale CMB B-mode polarization satellite missions REMAZEILLES, Mathieu (Manchester)

Speaker: Dr Mathieu REMAZEILLES (Manchester)

Slides Remazeilles_Litebird.pdf

One minute poster talks

15:35 Poster and TeaTime

Foreground

21 Discussion Modelator Jo Dunkley

Slides litebird_dunkley_fg.pdf

Saturday 12 December

Experimental status

22 Review of ground-based CMB experiments Kam Arnold (Wisconsin)

Speaker: Dr Kam Arnold (Wisconsin)

Slides 2015-12-12_Arnold_GroundBasedCMB.pdf

23 Status of Baloon projects and lessons leanred from Baloon projects for LiteBIRD

Speaker: Dr Shaul Hanany (Minnesota)

Slides Hanany_BalloonsV4.pdf

10:00 Coffee Break

Experimental status

24 LiteBIRD mission definition Masashi Hazumi (KEK/Kavli IPMU)

Speaker: Dr Masashi Hazumi (KEK/Kavli IPMU)

Slides 20151212_Hazumi_LiteBIRD_MissionDefinition_final.pdf

25 PIXIE Al Kogut (GSFC)

Speaker: Dr Al Kogut (GSFC)

Slides kogut_pixie_ipmu_2015.pdf

26 Europian spaceborne plans (Jacques)

Speaker: Dr Jacques Delabrouille (APC)

Slides COrE-JDelabrouille-IPMU2015.pdf

27 Part one summary and expectations for LiteBIRD Kris Gorski (JPL)

Speaker: Dr Kris Gorski (JPL)

Slides KMGorski.pdf

Monday 14 December

08:30 Registration

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

LiteBIRD system design

28 welcome and goals

29 LiteBIRD system definition Masashi Hazumi (KEK.Kavli IPMU)

Speaker: Dr Masashi Hazumi (KEK/Kavli IPMU)

Slides 20151214_Hazumi_LiteBIRD_SystemDefinition.pdf

30 US-MO Adrian Lee (UCB)

Speaker: Dr Adrian Lee (UCB)

Slides 2015.12.12.Adrian.Lee.NASA.MO.pdf

Data Analysis

31 Planck lessons learned: computing Julian Borrill (LBNL)

Speaker: Dr Julian Borrill (LBNL)

Slides bmode_borrill.pdf

32 Polarised beam window functions, and other systematic effects, seen in Planck Eric Hivon (IAP)

Speaker: Dr Eric Hivon (IAP)

Slides Planck_bl_Hivon_01.pdf

10:50 CoffeeBreak

Data Analysis

33 the production of the Maps and the low-l analysis

Speaker: Dr Matthieu Tristram (LAL)

Slides tristram_IPMU_PLANCK_large_scale_polarization.pdf

34 the E and B modes measurements at large angular scales Anna Mangilli IAS

Speaker: Dr Anna Mangilli (IAS)

Slides Mangilli_B-modesfromspace_IPMU.pdf

35 Lensing removal Blake Sherwin (UCB)

Speaker: Dr Blake Sherwin (UCB)

Slides bModeFromSpaceDelensingFinalPDF.pdf

12:35 Workshop PHOTO No. 2 and then Lunch

Data Analysis

36 Simulation Ishino (Okayama)

Speaker: Dr Hirokazu Ishino (Okayama)

Slides 151213-simulation-for-litebird-ishino.pdf

37 Cosmic ray seen by Planck Andrea Catalano (Neel)

Speaker: Dr Andrea Catalano (Neel)

Slides Catalano_glitches.pdf

38 Beam and time constant calibration and systemtics

Speaker: Dr Brendan Crill

Slides Crill_Dec2015_bmode_workshop_v0.pdf

39 Systematic error analysis

Speaker: Dr Ryo Nagata

Slides Nagata_1214_2015_bfs_ver0.pdf

15:15 TeaBreak

Modulator

40 Pol. Modulator Akito Kusaka (LBNL)

Speaker: Dr Akito Kusaka (LBNL)

Slides kusaka-modulator_review-v2.pdf

41 AHWP based modulator in EBEX Shaul Hanany Minnesota

Speaker: Dr Shaul Hanany (Minnesota)

Slides EBEX_AHWP_distribute.pdf

42 Pol Modulator for LiteBIRD T. Matsumura (JAXA)

Speaker: Dr Tomotake Matsumura (JAXA)

43 Metal mesh HWP and filter technology Giampaolo Pisano (Cardiff)

Speaker: Dr Giampaolo Pisano (Cardiff)

44 The QUIJOTE experiment and its modulator Enrique Martinez Gonzalez (ifca)

Speaker: Dr Enrique Martinez Gonzalez (ifca)

Slides QUIJOTE__Enrique_Martinez-Gonzalez.pdf

Tuesday 15 December

08:30 Registration

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

Telescope

45 Optics requrements and Telescope design T. Matsumura (JAXA)

Speaker: Dr Tomotake Matsumura (JAXA)

Slides Tomo_20151215_opticstalkidea.pptx.pdf

46 Planck lessons learned: Telescope and optics design Jan Tauber (ESA)

Speaker: Dr Jan Tauber (ESA)

Slides JTauber_Planck_optics_LL.pdf

47 Optics Design for LiteBIRD and realization plan Hajime Sugai (Kavli IPMU)

Speaker: Dr Hajime Sugai

Slides sugai20151215.pdf

48 Characterization of the LiteBIRD telescope using Physical Optics simulation Kimihiro Kimura (OPU)

Speaker: Dr Kimihiro Kimura (OPU)

Slides kimura_submit_20151215.pdf

10:40 CoffeeBreak

Telescope

49 metamaterial optics and experience from ACTPol for Jeff McMahon (UMICH)

Speaker: Dr Joannes Hubmayr

Slides Japan_MCMahon_2015.pdf

One minute poster talks

12:30 Poster and Lunch

Cryogenics

50 From Planck to LiteBIRD

Speaker: Dr Gerard Vermeulen

Slides litebird-2015-vermeulen.pdf

51 Cryogenics overview for LiteBIRD

Speaker: Dr Kazuhisa Mitsuda (ISAS)

Slides 20151215_IPMUd_mitsuda.pdf

52 Development status of the CEA cooler Lionel DuBand CEA

Speaker: Dr Lionel DuBand (CEA)

Slides 50_mK_Hybrid_cooler_(Duband_-_CEA_SBT)_LiteBIRD_Workshop_Japan_2015.pdf

15:45 Teatime

Cryogenics

53 ADR(Goddard) Peter Shirron GSFC

Speaker: Dr Peter Shirron (GSFC)

Slides GSFC_ADR-Shirron.pdf

54 PIPER's Continuous Adiabatic Demagnetization Refrigerator Eric Switzer (GFSC)

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 PIPER_CADR_2015.pdf

55 Dilution option

Speaker: Dr Keisuke Shinozaki (JAXA)

Slides 151215BmodeWS-CCDR-shinozaki-final.pdf

56 Experience from Astro-H

Speaker: Dr Noriko Yamasaki (ISAS)

Slides Bmode_AstroH_NYYamasaki.pdf

19:00 Banquet at Kashiwanoha oak village

Wednesday 16 December

Detector

57 Overview of the LiteBIRD Focal Plane Toki Suzuki (UCB)

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 2015_12_16_LiteBIRDDetectorOverview_Suzuki.pdf

58 Planck lessons learned Guillaume Patanchon (APC)

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 PlanckLessonsBmode.pdf

59 Development and Fabrication of the Lenslet Coupled Sinuous Antenna TES Bolometer Arrays for the LiteBIRD Low and Mid Frequency Focal planes Ben Westbrook (UCB)

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 2015_12_16_BmodesFromSpace_BenWestbrook_DetectorTalk.pdf

60 NIST focal plane technology relevant for LiteBIRD Johannes Hubmayr (NIST)

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 hubmayrBMFS_horncoupled.pdf

10:35 Coffee Break

Detector

61 LiteBIRD Focal Plane Cryogenics and Mechanics Ari Cukierman (UCB)

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 2015_12_16_BmodesFromSpace_LiteBIRDfocalPlane_Cukierman.pdf

62 Frequency Domain Multiplexing Bolometer Readout Matt Dobbs (McGill)

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 2015-12_DfMuxForLiteBIRD.pdf

63 Cryogenic Readout Electronics Kam Arnold (Wisc)

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 2015-12-16_Arnold_CryoReadout.pdf

64 SQUID in space, SQUID Readout Ken Irwin (SLAC)

Speaker: Dr Kent Irwin (SLAC)

Slides 2015-12-16_Irwin_SQUIDs_v4.pdf

12:30 Lunch

Detector

65 MKID Focal Plane

Speaker: Dr Yutaro Sekimoto (NAOJ)

Slides Sekimoto-BmodeLB-MKIDr.pdf

66 MKID feed and polarimeter

Speaker: Mr Shigeyuki Sekiguchi (naoj)

Slides sekiguchi_MKID_feed_and_polarimeter-revise.pdf

67 MKID at Grenoble Martino Calvo (NEEL)

Speaker: Dr Martino Calvo (NEEL)

Slides KID_ActivityInGrenobleGre_Calvo.pdf

14:45 TeaBreak

Detector

68 MKID readout

Speaker: Dr Hitoshi Kiuchi (NAOJ)

Slides Frequency_sweeping_scheme_Readout_system_2.pdf

69 MKID development at NIST

Speaker: Dr Jiansong Gao (NIST)

Slides hubmayrBMFS_mkid.pdf