LiteBIRD System Definition Masashi Hazumi (KEK and Kavli IPMU) - - PowerPoint PPT Presentation

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LiteBIRD System Definition Masashi Hazumi (KEK and Kavli IPMU) - - PowerPoint PPT Presentation

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LiteBIRD System Definition Masashi Hazumi (KEK and Kavli IPMU) December 14, 2015 LiteBIRD working group 128 members, interna/onal and interdisciplinary (as of Dec 14, 2015) U. Tsukuba JAXA Osaka Pref. U. KEK NAOJ APC Paris UC Berkeley / H.

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SLIDE 1

LiteBIRD System Definition

Masashi Hazumi (KEK and Kavli IPMU) December 14, 2015

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SLIDE 2

2015/12/14

2

LiteBIRD working group 128 members, interna/onal and interdisciplinary (as of Dec 14, 2015)

JAXA

  • H. Fuke
  • I. Kawano
  • H. Matsuhara
  • T. Matsumura
  • K. Mitsuda
  • T. Nishibori
  • K. Nishijo
  • A. Noda
  • A. Okamoto
  • S. Sakai
  • Y. Sato
  • K. Shinozaki
  • H. Sugita
  • Y. Takei
  • M. Utsunomiya
  • T. Wada
  • N. Yamasaki
  • T. Yoshida
  • K. Yotsumoto

Osaka U.

  • S. Kuromiya
  • M. Nakajima
  • S. Takakura
  • K. Takano

Osaka Pref. U.

  • M. Inoue
  • K. Kimura
  • M. Kozu
  • H. Ogawa
  • N. Okada

Okayama U.

  • H. Ishino
  • A. Kibayashi
  • Y. Kibe
  • Y. Kida
  • A. Okamoto
  • Y. Yamada

NIFS

  • S. Takada

Kavli IPMU

  • K. Hattori
  • N. Katayama
  • H. Sugai

KEK

  • M. Hazumi (PI)
  • M. Hasegawa
  • N. Kimura
  • K. Kohri
  • H. Morii
  • T. Nagasaki
  • R. Nagata
  • H. Nishino
  • S. Oguri
  • T. Okamura
  • N. Sato
  • T. Suzuki
  • O. Tajima
  • T. Tomaru
  • M. Yoshida

Konan U.

  • I. Ohta

NAOJ

  • A. Dominjon
  • J. Inatani
  • K. Karatsu
  • S. Kashima
  • T. Nitta
  • T. Noguchi
  • S. Sekiguchi
  • Y. Sekimoto
  • S. Shu

Saitama U.

  • M. Naruse

NICT

  • Y. Uzawa

SOKENDAI

  • Y. Akiba
  • Y. Inoue
  • H. Ishitsuka
  • Y. Segawa
  • H. Watanabe
  • U. Tsukuba
  • M. Nagai

TIT

  • S. Matsuoka
  • R. Chendra

Tohoku U.

  • M. Hattori
  • T. Morishima

Nagoya U.

  • K. Ichiki

Yokohama

  • Natl. U.
  • T. Fujino
  • F. Irie
  • K. Mizukami
  • S. Nakamura
  • K. Natsume
  • T. Yamashita

RIKEN

  • S. Mima
  • C. Otani

APC Paris

  • R. Stompor

CU Boulder

  • N. Halverson

McGill U.

  • M. Dobbs

MPA

  • E. Komatsu

NIST

  • G. Hilton
  • J. Hubmayr

Stanford U.

  • S. Cho
  • K. Irwin
  • S. Kernasovskiy

C.-L. Kuo

  • D. Li
  • T. Namikawa
  • W. Ogburn

UC Berkeley / LBNL

  • D. Barron
  • J. Borrill
  • Y. Chinone
  • A. Cukierman
  • T. de Haan
  • N. Goeckner-wald
  • P. Harvey
  • C. Hill
  • Y. Hori
  • W. Holzapfel
  • O. Jeong
  • R. Keskitalo
  • T. Kisner
  • A. Kusaka
  • A. Lee(US PI)
  • E. Linder
  • P. Richards
  • U. Seljak
  • B. Sherwin
  • A. Suzuki
  • P. Turin
  • B. Westbrook
  • N. Whitehorn

UC San Diego

  • T. Elleot
  • B. Keating
  • G. Rebeiz

Super-conducting detector developpers CMB experimeters IR astronomers JAXA engineers X-ray astrophysicists

  • U. Tokyo
  • N. Tomita

Kansei Gakuin U.

  • S. Matsuura
  • U. Wisconsin
  • K. Arnold

Paris ILP

  • J. Errard
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SLIDE 3

Outline

  • 1. Recap of Mission Definition
  • 2. Summary of Pre-phase-A Studies
  • 3. Phase-A Overview

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

3

Note there was a talk on Mission Definition on Saturday Dec. 12. This talk is an introduction to many specific technical talks that will be given in this workshop.

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SLIDE 4
  • 1. Recap on Mission Definition

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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SLIDE 5

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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LiteBIRD Mission Summary

  • CMB B-mode satellite proposed to JAXA

– Also to NASA for US participation – Both proposals passed initial selection

  • Proposed launch year: JFY 2022
  • Mission Requirements

– Total uncertainty on r < 0.001* – Multipole coverage: 2 ≤ l ≤ 200

  • Each bump (reionization, recombination)

with >5sigma if r > 0.01

  • Orbit: L2
  • Observing time: 3 years

*Our current studies yield σ(r) = 2 x 10-4 (for r=0) for 3 year observation Lite (Light) Satellite for the Studies of B-mode Polarization and Inflation from Cosmic Background Radiation Detection

Talk on Dec. 12

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SLIDE 6

15 frequency bands as global Phase-A baseline

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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40 100 400

Frequency [GHz]

10−6 10−5 10−4

Sensitivity [K]

Synchrotron D u s t CMB CO J10 CO J21 CO J32 CO J43 LFT HFT

Polarization sensitivity

2.4 µKarcmin

(3 year operation, including margin)

HFT LFT

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SLIDE 7

LiteBIRD constraints on r vs. ns plane (15 bands)

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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SLIDE 8
  • 2. Summary of Pre-phase-A Studies

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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SLIDE 9

LiteBIRD Instrument

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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S

  • l

a r a r r a y p a d d l e

Bus module Mission module Mirrors at 4K Multi-chroic focal plane detectors Continuously- rotating half wave plate (HWP) slip ring Lenslet TES MKID HGA：X band data transfer to the ground 0.1rpm spin rate Line of sight FOV 10 x 20 deg. 30 deg.

  • Mission module benefits from heritages of other

missions (e.g. ASTRO-H) and ground-based experiments (e.g. POLARBEAR).

  • Bus module based on high TRL components

Cryogenics n JT/ST and ADR (ASTRO-H heritage)

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SLIDE 10

LiteBIRD block diagram

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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Warm Mission Instruments Low Temp. Mission Instruments

Bus System 1.8m Fit in H2 envelope TES option

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SLIDE 11

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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Scan strategy at L2

Anti-sun direction

Spin angle β = 30° Precession angle α = 65° 90 min.

Sun 0.1rpm

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SLIDE 12

Scan strategy

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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α+β ≥ 90° for full sky α+β ≤ 95° from thermal/

  • ptical requirements

（α、β）=（65°,30°） chosen to minimize the effect of E to B leakage due to pointing bias LiteBIRD

Scan path

Good crosslink reduces pointing bias w/ multiple measurements

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SLIDE 13

Operation concept

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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Ground'sta+on'X-band' (Usuda'64m'or' Uchinoura'34m) Mission'observa+on' data,'HK,'poin+ng' data,'ranging,'' X-band'10Mbps Ground'sta+on'S-band' (Uchinoura'34m'or'' Uchinoura'20m)' LiteBIRD'satellite Gnd.'control'sta+on' Sagamihara'SSOC' HK'monitor'in' satellite,'aNtude' control,'ranging,' refrigerator'P'HWP'

  • pera+on

Observed'data'storage/' Transport'to'data' analysis'center Data'recep+on'request Data'analysis'center'' U'of'Tokyo,'Kavli'IPMU Data'process'based'

  • n'calibrated'data

Scien+fic'results Data'management'center' JAXA'DARTS'etc.'(TBD) Manage/opera+on'

  • f'all-sky'map'data

Open'data'to'the'world' Each'new'GN'sta+on' (Tsukuba)' Orbital'mechanics'' System'(Tsukuba) Raw'data'

3.6GByte/day

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SLIDE 14

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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Road to achieve the full success

σ(r) < 0.001

Statistical Lensing Foreground Systematic

Observer bias as the 5th element à mitigation by e.g. blind analyses

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SLIDE 15

LiteBIRD Sensitivity (15 bands)

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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σ(r) = 0.45 x 10-3 for r = 0.01, including foreground

removal*, cosmic variance and delensing w/ CIB**

r < 0.4 x 10-3 (95% C.L.)

for undetectably small r Note: σ(r=0) = δr = 2 x 10-4

polarized dust @ 95GHz p=15%, fsky=65% polarized synchrotron @ 95GHz, p=15%, fsky=65%

r=0.1 r=0.01 This proposal

* Foreground residual estimation with Errard et al. 2011, Phys. Rev. D 84, 063005 plus a new method (this proposal, another paper in preparation) ** ”Delensing the CMB with the Cosmic Infrared Background”, B. D. Sherwin, M. Schmittfull arXiv:1502.05356

This proposal

σsys(total) = 1.1 x 10-4

  • J. Errard
  • R. Nagata

Source

  • Expctd. error

Reasoning Pointing 0.23 arcmin Star tracker spec. Angle calibration 1 arcmin Cl

EB method

Absolute gain 0.6% CMB dipole

  • Diff. gain

0.43%

  • Diff. beam width

<1% Optical simulation, HWP experience

  • Diff. ellipticity

<1%

  • Diff. pointing

<1%

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SLIDE 16

Top-level system requirements

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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M1 All-sky CMB polarization observation M2 Dust observation M3 Synchrotron observation M4 δr < 0.001 M5 Power specttrum

System Requirements

S1 Sensitivity S1.1 Total CMB

  • bserving time

S2 δr breakdown S2.1 Pol. modulation S3 # bands S3.1 Bandwidth S4 Angular resolution S5 Linear pol. meas. S6 CO separation

Mission Requirements

P1 Observation in space P2 Foreground removal C1 Launch vehicle C2 Cost C3 Schedule C4 Competition

Constraints Prerequisits

P3 Operation

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SLIDE 17

Launch Vehicle

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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  • First test launch in 2020
  • ½ cost w/ same capability

(comparison w/ H-II B) H3

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SLIDE 18
  • 3. Phase-A Overview

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

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SLIDE 19

JAXA initial phases of space science missions

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

19 System Requirements Review System Definition Review Mission Definition Review The current design for Phase A studies is regarded as an example, which is subject to modifications. LiteBIRD Reviews

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SLIDE 20

Systems Engineering of LiteBIRD

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

20 Mission Requirements Definition System Requirements Analysis Architecture Design Mission Requirements Documents

  • MDR documents
  • System Requirements
  • SEMP

Functional Design Physical Design System Definition Documents

  • Design specifications
  • Verification plans and criteria
  • Interface definitions
  • Risk identification/mitigation

Reviews

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SLIDE 21

T esting and integrations

December 14, 2015

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POLARBEAR2 integration is ongoing at KEK with sub-K cryogenic system and UC Berkeley TES bolometers.

JAXA 13-m diameter space chamber Astro-H test is done here.

JAXA 6-m diameter space chamber JAXA 1-m diameter space chamber LiteBIRD has members with the CMB instrument integration expertise, satellite integration expertise, HEP radiation expertise together with the fully equipped facilities. Proton irradiation tests at HIMAC

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SLIDE 22

Provisional Phase-A Timeline in 2016

2015 2016

9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12

ISAS/JAXA NASA

22

CSR Evaluation SRR

Review

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

Phase-A1 Phase-A

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SLIDE 23

LiteBIRD Phase-A Organization

2015/12/14 Masashi Hazumi (KEK, Kavli IPMU)

23 ISAS/JAXA phase-A1 team

  • System Integration
  • Bus system
  • Mission instruments (≥ 4K)
  • Optics
  • Precoolers

NASA phase A team

  • Mission instruments (< 4K)
  • Focal plane
  • Sub-K cooling system

Point-of-Contacts (POCs)

  • International Collaboration and Leadership:

Masashi Hazumi and Adrian Lee

  • Project Management:

Tadayasu Dotani and Peter Harvey

  • Technical Coordination:

Tomo Matsumura and Kam Arnold LiteBIRD Joint Study Groups (JSGs)

  • Foreground conveners:

Nobu Katayama and Julian Borrill

  • Systematics conveners:

Hirokazu Ishino and Chao Lin Kuo

LiteBIRD External Collaborators

  • Partial access rights to

LiteBIRD internal information