Euclid France

Euclid Consortium

Spécification Technique de Besoins

de la

Mission Euclid

Jérôme Amiaux

EC Mission System CEA / SAp

Euclid France

Euclid Consortium Euclid: en simplifié

Aller dans l’Espace Observer tout le ciel Extra Galactique

Comprendre l’accélération de

l’expansion de l’univers

Euclid France

Euclid Consortium Complexité de l’implémentation

Space Segment Ground Segment

Survey

Science Level L0 – L1 - L2

Mission Level L3

Euclid France

Euclid Consortium Complexité de l’implémentation

Space Segment Ground Segment

Survey

Science Level L0 – L1 - L2

Mission Level L3

Element Level L4

NISP VIS

Euclid France

Euclid Consortium Complexité de l’implémentation

Space Segment Ground Segment

Survey

Science Level L0 – L1 - L2

Mission Level L3

Element Level L4

Assembly Level

Component Level

NISP VIS

Euclid France

Euclid Consortium Spécifications Scientifiques

Euclid Primary Science Objectives

Level 1 Weak Lensing

Level 2 Weak Lensing Level 2 Galaxy Clustering Level 2 Survey

Level 1 Galaxy Clustering

Survey Size Galaxy Density for WL / GC Redshift distribution WL / GC

N<20

N<30

Visible Depth

Visible PSF Characteristics

Visible PSF Knowledge

NIR (Y J H) depth

NIR Relative Photometry

Sensitivity (emission line)

Completness

Redshift Accuracy

Wide Survey Coverage

Calibration Fields Coverage

Deep Survey Coverage

Science Implementation Levels: These are the levels where specific Scientific probes are selected to reach a Science Goal. For Euclid, this is the selection of Weak Lensing and Baryonic Acoustic Oscilations as primary probes driving the mission.

Euclid France

Euclid Consortium Spécifications Mission

Level 2 Weak Lensing

Level 2 Galaxy Clustering

Level 2 Survey

Visible Depth

Visible PSF Characteristics

Visible PSF Knowledge

NIR (Y J H) depth

NIR Relative Photometry

Wide Survey Coverage

Calibration Fields Coverage

Sensitivity (emission line)

Completness

Redshift Accuracy

Deep Survey Coverage

Mission Implementation Levels: These are the levels where specific Mission implementation options are selected at Space and Ground Segment Level For Euclid, this is the selection of specific Spacecraft, Instrument, Data Processing and Sky Survey options.

VIS Throughput

VIS Integration Time

Size

Ellipticity

Wings

Wavelength Variation

Geometrical Distorsion

PSF Size Calibration

PSF Ellipticity Calibration

PSF Linearity Calibration

Distorsion Calibration

CTI Calibration

NISP P Throughput

NISP P Integration Time

Detector Intra pixel

Photo Calibration

NISP S Throughput

NISP S Integration Time

NIR Spectro PSF

NIR Photo PSF

Survey Area

Survey Map

Dithering Map

L3

Reaching ~1000 requirements when arriving a level driving mission

implementation

Euclid France

Euclid Consortium Spécifications à l’AO

Sci RD L0-L1-L2

Telescope Concept

Mission Constraint

MRD L3

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

Consortium Industry

Requirement

Rationale

Euclid France

Euclid Consortium Spécifications actuelles

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Requirement

Rationale

Euclid France

Euclid Consortium Spécifications actuelles

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Euclid France

Euclid Consortium Spécifications actuelles

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Euclid France

Euclid Consortium Spécifications actuelles

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Euclid France

Euclid Consortium Spécifications actuelles

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Euclid France

Euclid Consortium Spécifications actuelles

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Euclid France

Euclid Consortium Spécificité d’Euclid

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

Requirement

Rationale

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Importance dès les phases amonts de la prise en compte: • Du traitement de Données • Des Calibrations • Du Survey Pour démontrer la tenue des besoins science et la faisabilité de l’implémentation

Euclid France

Euclid Consortium Exemple: Survey

First Year Period specific calibrations Sequence Type of Sequence Duration Cadence SLEW Slew to a galactic star field

Every month CALIB Take exposures with different times [V-CAL-F-005] 1 day SLEW Slew back on WS SLEW Slew to a Planetary Nebula Twice (one after

3mos, the other after 6mos)

CALIB Take exposures with different times and orientations [NS-CAL-F-003] 1 day SLEW Slew back on WS SLEW Slew to a White Dwarf Twice (one after

3mos, the other after 6mos)

CALIB Take exposures with different times and positions [NS-CAL-F-006] 1 day SLEW Slew back on WS

SLEW Slew to an open cluster [NS-CAL-F-003] Once per year CALIB Take exposures with different times and positions 1 day

SLEW Slew back on WS Total Duration 17 days

For Reference Survey will be assumed in the Galactic Plane

For Reference Survey will be assumed in the Galactic Plane

For Reference Survey will be assumed in the NEP

For Reference Survey will be assumed in the Galactic Plane

Euclid France

Euclid Consortium Exemple: Survey

HST field 1 HST field 2 HST field 3

NISP S Cal

VIS cal

Deep North

Deep South Year 2

Euclid France

Euclid Consortium Exemple: Survey

Year 6

Euclid France

Euclid Consortium Exemple: Survey

Year 6

Euclid France

Euclid Consortium Survey

Sci RD L0-L1-L2

SPBD L2 – L3

Calibration Concept

Operation Concept

Telescope Concept

Mission Constraint

MRD L3

PERD L3

GDPRD L3

CCD L3

SCS L3

Requirement

Rationale

VIS L4

NISP L4

VIS EID-B

NISP EID-B

VIS EID-A

OU L4

Consortium Industry

Euclid France

Euclid Consortium Exemple: Mesure de Shear

m<2x10-3 σsys²<1x10-7

R-WL.1-4: Measurement control such to limit multiplicative and

additive bias on shear

Telescope and Instrument Stability

Telescope and Instrument Properties

In former AO Break Down Structure, it was not possible to link the lower level requirements directly to higher level Scientific needs

Verification was not feasible.

Requirements were stated as not feasible and considered as major Risk to the mission.

Euclid France

Euclid Consortium Exemple: Mesure de Shear

m<2x10-3 σsys²<1x10-7

R-WL.1-4: Measurement control such to limit multiplicative and

additive bias on shear

Telescope and Instrument Stability

Telescope and Instrument Properties

In former Break Down Structure, it was not possible to link the lower level requirements directly to higher level Scientific needs

Verification was not feasible.

Requirements were stated as not feasible and considered as major Risk to the mission.

Euclid France

Euclid Consortium Exemple: Mesure de Shear

m<2x10-3 σsys²<1x10-7

R-WL.1-4: Measurement control such to limit multiplicative and

additive bias on shear

Telescope and Instrument Stability

PSF properties PSF knowledge method bias method knowledge

Telescope and Instrument Properties

Data Processing Requirements

Calibration Requirements

Operation Requirements

Current Break Down Structure allows us to verify that proposed implementation is compliant with High Level Science Requirements

Euclid France

Euclid Consortium Exemple: Mesure de Shear

m<2x10-3 σsys²<1x10-7

R-WL.1-4: Measurement control such to limit multiplicative and

additive bias on shear

Telescope and Instrument Stability

PSF properties PSF knowledge method bias method knowledge

Telescope and Instrument Properties

Data Processing Requirements

Calibration Requirements

Operation Requirements

Current Break Down Structure allows us to verify that proposed implementation is compliant with High Level Science Requirements

Euclid France

Euclid Consortium Exemple: Mesure de Shear

m<2x10-3 σsys²<1x10-7

R-WL.1-4: Measurement control such to limit multiplicative and

additive bias on shear

Telescope and Instrument Stability

PSF properties PSF knowledge method bias method knowledge

Telescope and Instrument Properties

Data Processing Requirements

Calibration Requirements

Operation Requirements

Current Break Down Structure allows us to verify that proposed implementation is compliant with High Level Science Requirements

Euclid France

Euclid Consortium Euclid: un Projet Scientifique

• Science: • Les besoins scientifiques justifient l’intérêt de la mission

• Project: • L’expression claires des besoins justifient la faisabilité d’une mission

Le Consortium intervient à 2 niveaux sur Euclid: • Au niveau Scientifique • Au niveau instrument Importance dans le consortium de la collaboration étroite au niveau mission entre:

Instrument / Ground Scientist:

Garant des besoins Sciences

Instrument / Ground system:

Garant de l’implémentation

Mission System: Garant de la bonne propagation des besoins Science au niveau

Mission

Requirement ESA ECSS Standard a. Traceable b. Unique c. Single d. Verifiable e. Unambiguous f. Necessary

ESA