Titre du document + date Arial 8 à modifier dans le masque (Affichage/Masque/Masque des diapositives)

CNES – 9 Décembre 2013

Karine MERCIER

SVOM ECLAIRs Point techniqueObjectifs

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Agenda

9h30 1. Point projet : François 10mn 2. Point de vue des scientifiques: Jean-Luc / Bertrand 10mn 3. Objectif réunion ECLAIRs / Plan travail 2014 : Karine 15mn

10h05 4. Philo redondance FPL: Laurent P 10 mn 5. UGTS:

o Présentation de l’UGTS (architecture, implémentation, Rex UTS, redondance …) Francois D

o Liste des fonctions o Développements IRAP réutilisables (UGD, bancs de tests, …): IRAP o Compatibilité PSU avec UGTS (volume, contraintes aménagement …) IRAP / CEA o Plan travail UGTS 2014 (Hw, Sw, P d Dev, …) o …

6. Problématique ITAR Laurent P + Tous o Listes des composants o Problématique RTEMS o

au max 13h Repas

14h00 1. Visite salle Blanche ECLAIRs avec la cuve (AC) 2. DPIX: IRAP

o Point Fabrication XRDPIX o Principaux résultats activités en cours o Plan de travail DPIX 2014 o …

3. Système thermique Thierry T : 30mn o Présentation résultats contrat EHP o Plan de travail 2014

4. Masque ?? : 30mn o Point sur maquettage et tests validation TiTaTi o Plan de travail 2014

5. Plan travail 2014 ECLAIRs Karine M o Architecture Data: Stéphane S o Architecture Elect: Christophe C o Architecture Méca: Benjamin P o Synthèse plan de travail : Karine M

6. Divers tous 17h / 17h30

Matin Après-Midi

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Objectifs réunion

Débrief D-PRR Shanghai Oct. 2013

Clarification des hypothèses de travail: UGTS

Elaboration d’un plan de travail 2014 dans le contexte projet

SVOM PRR 22-24 October 2013 – SHANGHAI

ECLAIRS & MXT Instruments of the French Payload

Karine MERCIERFrench Payload Manager

22-24 October 2013

SHANGHAI

SVOM PRR 22-24 October 2013 – SHANGHAI 5

ECLAIRs instrument in charge of GRB detection and localization

INSTRUMENTS OF THE FRENCH PAYLOAD

ECLAIRS and MXT the 2 French Payload instruments:

MXT in charge of fine localization and dedicated to GRB follow-up observation in soft X-ray band

the FCU -French Control Unit: the French data processing in charge of the management:o of the FPL instruments (ECLAIRs, MXT, VHF)o of the Automatic Alert Sequence in board o of the Interface with PF & C-DPU

the VHF subsystem (VHF Emitter & Antennas) dedicated to transmit GRB message to ground in real time

FCU

Calculateur FCU

VHF-E

VHF-A

VHF

MXT

MXT - DPU TXG

ECLAIRs

UGTS

In addition to manage the French instruments and the Alert

SVOM PRR 22-24 October 2013 – SHANGHAI 6

FPL Activities status from mid-2011

Status PLM / FPL mi 2011: ECLAIRs: end of Phase B (PDR October 2011) MXT: end of Phase A (Key Point January 2012) VHF subsystem and FCU: end of Phase A (Breadboarding end 2011)

No major activities from 2012 to mid 2013 only few works on the “heart” of the instruments.

Since mid 2013 adaptation to the new PF with the hypothesis: The SL & PLM general architecture stays similar The interfaces are maintained as far as possible Mass and power allocations for the French Payload are reduced

SVOM PRR 22-24 October 2013 – SHANGHAI 7

Drivers are defined to adapt the FPL on the new PF:

The major impact is the mass and power allocation reduction.

Hypothesis defined to reach the goal: Keep the instrument performances (instrument sizes) Remove redundancies (ECLAIRs, MXT, FCU and VHF-E) Reduce the electronic boxes number and merge as far as possible same

functions Review design to make lighter

Major impacts on ECLAIRs contrary to MXT already a light version of instrument

The updated French payload

AllocationFPL

PF Proteus 2011

PF Chinoise 2013 D

Masse (Kg) 150 131 - 19 kg

Power (W) 213 142 - 71 W

SVOM PRR 22-24 October 2013 – SHANGHAI 8

New electrical architecture for FPL

SVOM PRR 22-24 October 2013 – SHANGHAI 9

Budgets FPL

Reductions: 18 kg and 71W To be confirmed by detailed studies in Phase B

Mass budget Power budget

FPLMaximum Mass (kg)

MarginMaximum Mass (kg)

Margin

Eclairs 95,0 10% 86,5 15%

MXT 32,1 20% 31,5 20%

FCU 7,9 20% 3,5 20%

VHF 14,8 20% 10,0 13%

Total FPL 149,8 14% 131,5 16%

IRD Draft V02OHP June 2011

IRD Ed01October 2013

IRD Draft V02OHP June 2011

IRD Ed01October 2013

FPLNominal mode

max (W)Nominal mode

max (W)

ECLAIRs 118 84

MXT 74 39,5

FCU 11 9

VHF 10 10

Total FPL 213 142,5

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

SVOM Delta PRR

Review Board first draft synthesis

Note : the following document is preliminary and not exhaustive

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Thanks

The review board thanks SECM for the perfect organization of the

review and their hospitality Both sides for having organized a full range

experts participation to this important key point

The project teams for the clarity and the completeness of the presentations

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Recall of Delta PRR objectivesThe Delta Preliminary Requirements Review is aimed at

reviewing and assessing the following points :

• 1. the feasibility of the updated design of the complete system and its compliance with the mission requirements

• 2. the suitability of the development plan, and associated schedule

• 3. the suitability of the project organization between Chinese and French sides

• Objectives of the review completed mainly focused on the evolutions since the PRR

General Assessment• A lot of work done by both sides since the February 2013 proposal for a

new sharing of responsibilities (Chinese side will provide the Platform, PIM, VT, GRM, Launch service and French side will provide Eclair, MXT and the alert system)

• Scientific mission improved with the four instruments enhancements• System architecture preserved and sharing of responsibilities much

clearer• System performances compliant with mission requirements

• No showstopper identified Mission feasibility confirmed but• Development plan to be refined especially for system and mission

performances verifications • Schedule incompatibility between the proposed launch date and the

French payload deliveries

Shanghai, October 25th 2013SVOM delta PRR review board first draft synthesis

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Mission and Science• SVOM mission science is unique and should allow a better

knowledge of Gamma Ray Bursts• The instrument suite has been optimized

– Eclair : sensitivity improved (modification of the coded mask)– GRM : localization ability and larger “global” FoV (3 GRM instead of 2)– MXT : new high performance (FoV)– VT : FoV enlarged, NIR performances preserved (new CCD) and

pointing accuracy improved (FGS)– GFTs and GWAC : enhancement of the scientific returns

• System performances compliant with mission requirements with some hypotheses to be confirmed in phase B (R1-R2-R9-R10)

• Science management plan to be updated in accordance with the « new » MOU

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

System• General GRB detection and slew strategy to be refined and

confirmed in phase B

• CNES S-Band support for short delay ToO (12h)• Compatibility between the on board S-Band subsystem and the S-

Band Cnes Stations to be checked before end of the year• Programmatic decision to be taken with regard to the scientific

expectations

• Orbit selection to be optimized taking into account the PF current design without the propulsion system (radiation risk, mission life time,…)

• Risk assessment about debris avoidance without propulsion to be performed

• System activities, reviews and verification process to be addressed in a joint system development plan

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Satellite and Payload

• The new satellite design complies with the mission requirements

• Improvement of the pointing performance with FGS in the AOCS loop

• Efforts made by both sides to reduce mass and power

• SAT and PL Environment requirements to be finalized taking into account the new launcher inputs

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Management• System development plan : agreement between both sides to issue a dedicated

system development plan dealing with system activities, system reviews and system verifications and validations

• Level 2 reviews : no joint review foreseen at satellite level despite being compliant with the previous PIP

• Schedule : Schedule incompatibility between the proposed launch date (2017) and the French payload deliveries (FM in 2018 leading to a launch in 2019)

• ITAR : both sides have made their best efforts to avoid ITAR. CNES has identified the US parts and will complete their report to the CNES management after the final US rules will be issued (end 2013)

• JSC : Chinese side has defined the Chinese members to JSC despite for French side this issue will be managed by high level management

Foreseen recommendations (1/2)• Mass budget / redundancies :

– to clarify the mass allocated by the launcher to the satellite in order to improve margin

– to jointly revisit the mass allocation to payload– for the French side to improve the PL reliability by

minimizing the risk of failure on the weakest elements (Power converters,…)

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Foreseen recommendations (2/2)• Joint reviews : To have at least 2 joint reviews

dealing with satellite topics phased with the Chinese PDR and (TBC) CDR satellite reviews

• Schedule : to balance the launch date with the technical challenges, programmatic constraints, scientific expectations and cooperation risks

• JSC : French side to define the members for a JSC to be held before end of 2013

• ITAR : French side to clarify the situation for the JSC

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Shanghaï, october 25th 2013 SVOM delta PRR review board first draft synthesis

Preliminary Conclusions

• Review succesfull

• NO technical showstopper to go in phase B

• Recoms to be implemented