LiteBIRD Canadian contribution

Canadian Space Astronomy WorkshopUniversity of Montreal, Nov. 6, 2018

Canadian Contributionfor LiteBIRD CMB Polarimeter

Matt Dobbsfor the Canadian LiteBIRD collaboration

LiteBIRD Canadian contribution

“Detecting primordial gravitational waves would be one of the most significant scientific discoveries of all time.”

Final report of the task force on cosmic microwave background research“Weiss committee report”, July 11, 2005, arXiv/0604101

Discovery impact: – Signature for inflation – the physics of the big bang birth of

the universe.– Constrain theories of quantum gravity– … and a long list of other measurements (reionization history,

power spectrum deviation from ɅCDM, galactic magnetic fields etc.)

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LiteBIRD Canadian contribution

LiteBIRD

LiteBIRD expectation

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Full Success�s(r) < 1 x 10-3 (for r=0)2 ≤ ≤ 200`

Secondary effect

(Gravitational lensing)

Inflation

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LiteBIRD Canadian contribution

LiteBIRD (2 ≤ ell ≤ 200)

XJAXA-ledfocused missions(r)<0.0012 ≤ l ≤ 200focused by still withmany byproducts

Telescopes on ground30 ≤ l ≤ 3000~10000 e.g. South Pole Telescope, CMB-S4

Powerful Duo

• This powerful duo is the best cost-effective way.• Great synergy with two projects

• Foreground data from LiteBIRD, Delensing with ground data

LiteBIRD Canadian contribution

Science merit and objectives

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LiteBIRD Canadian contribution

MTR 2016 Status

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LiteBIRD Canadian contribution

CMB Polarization in Space

• Home-run science.• Leverage Canada’s leadership role in CMB data

analysis. (CITA, ACT, SPT, Planck, WMAP)• Leverage Canada’s leadership role in mm-

wave detector readout from the ground/balloon.

• Key innovation partnerships for industrial leadership (onboard DSP), with technology training for tomorrow’s leaders.

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LiteBIRD Canadian contribution

Funded Canadian LiteBIRD Activities

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2012-2014: Space Technology Development Program (STDP)Developed path-to-flight hardware and firmware

2018: Mission Contribution Study (MCS) – 8 monthsExplore Canadian contribution to mission instrumentation

2018-2019: Science Maturation Study (SMS) – 16 monthsFormally link instrument performance to science objectives

2012

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2014

2015

2016

2017

2018

2019

2020M. DobbsG. SmecherJF. ClicheM. Rouble

Renée HložekDick BondVictor ChanSimran Nerval

Douglas Scott

LiteBIRD Canadian contribution 9

LiteBIRDOverview

LiteBIRD Canadian contribution

Schedule

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MCS Tech. Dev.Phase B Phase C Phase D

AUG 2018

MAR 2019

CSA Participation to LiteBIRD

CSA Technology

Development program

LiteBIRD Canadian contribution

LiteBIRD Canadian contribution 12

LiteBIRD Canadian contribution

Canadian Readout System

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