SVOM Science Ground Segment

Transcription

1 SVOM Science Ground Segment Maohai Huang on behalf of SVOM GS team SVOM Workshop, Les Houches, M. Huang 1

2 SVOM Observing Programs Core Programs (GRB) General Programs ToO Programs Nominal ToO (including revisit of GRBs) Exceptional ToO More refined classification is being defined SVOM Workshop, Les Houches, M. Huang 2

3 Overview of SVOM ground segment French Ground Segment Chinese Ground Segment VHF network French X band station French S band station (ToO prog) CLTU, PDP, RAF Chinese S band station S band raw data,tc FGFT GFTs Instrument Burst Advocate GRB Alert French Science ECLAIRs instrument center VHF data MXT instrument center GRB notices and circulars Level 1, 2 and 3 French Network Operation French Payload Operation Orbit, pass-req, PLTM... L0c, Aux data, TC logbook Scientific products L1, L2, L3 Work Plan FPL TC plan, TC Logbook. FPL HK L0c, FPL S band HK0 Aux Data Chinese X band station X band raw data Mission X band raw data, S band HK0, Aux data, TC logbook, Space Science Data Science products SVOM users GRB worldwide network (GCN, VO) S band HK0, TC, Orbit,... Workplan, orbital events CPL TC plan Pointing TC plan L0c, Aux data, TC logbook Scientific products L1, L2, L3 Chinese Control Chinese Science GRB notices and circulars related to GRM and C-GOS General program : Call for OBS GWAC C-GOS SVOM PIs CGFT Pointing request : GRB Revisit, ToO OBS program TBC SVOM users Robotic telescopes Satellites SVOM users SVOM Workshop, Les Houches, M. Huang 3

4 Data flow and time requirements from satellite to VOEvent network and GCN Data acquisition on board T0+22 sec Onboard instruments X-band and S- band telemetry VHF Network Ground s VHF Data (All onboard instruments) 5 sec GRB Notices 5 sec VOEnet, GCN FSC (CEA, Saclay) FGFT Alert notice 5 sec CSC (NAOC, Beijing) Alert notice 2 sec Mission Space Sci. Data L0 data T0+4 to +14 hour GRB Notices and Circulars As soon as available Responsible Science (CSC or FSC) GFT Observing results 5 min CGFT GWAC Final Products T0+24 hour GRBl Community Burst Advocate and IEs Many telescopes can be added to follow-up networks with flexibility SVOM Workshop, Les Houches, M. Huang 4

5 Exceptional ToO Obs Proposal Exceptional ToO Obs Proposal PI ToO obs feasibility OK System tool PI T0 ToO obs feasibility ToO Request T0 + 2h OK System tool Exceptional ToO OCG approval Exceptional ToO observation: from obs. proposal to satellite execution T0 T0 + 4h T0 + 6h ToO Request FPL command Plan Development French Payload Operation Mission Merging of French and Chinese PL Command Plans OK ToO Work plan Elaboration CPL Command Plan Development Mission ToO Obs plan ID ToO Type Mission Horizon Targets ID Targets Coordinates. PF Command Plan Development Chinese Control Mission Merging of all command plans Satellite Command T0 + 7h Plan upload Chinese Control Satellite command Plan Chinese Control Satellite Command Plan upload Chinese Ground French Ground Chinese Control Chinese Ground French Ground Maxi T0 + 12h Maxi T0 + 12h Satellite On board execution Satellite On board execution 5

6 General Programs 1. PIs issues call for proposal once a year for ÉCLAIRs, VT, MXT, and ground instruments 2. Observers write and submit proposal with tools supported by the Science s 3. TAC evaluates, selects and allocates time, and form a one-year Pre-Planned Target 4. PPT executed by the Mission, subject to interruption and re-scheduling due to Core and ToO activities 5. Once observed, data are processed in standard pipeline and released to observer. Note: GP may also have ToOs SVOM Workshop, Les Houches, M. Huang 6

7 summary SVOM ground segment is designed to offers guaranteed follow-up capabilities, quick reaction time, and flexible IT infrastructure to meet the requirements of SVOM observation programs as time-domain astronomy enters a rapidly expanding period SVOM Workshop, Les Houches, M. Huang 7

8 C. Lachaud & B. Cordier : about ToO summary Table ToO Approval performed within from acceptance/ trigger GRB interuption Frequency Tiling process Science product availability VHF Canal VHF data ToO-CP BA <48h yes MAX 80/year No 24h No - ToO-GP-PP GP selection process <48h yes MAX 1/day =>5/day No 24h No - < 12h no 1/month ToO-GP-NP PI < 48h yes 1/day =>5/day No 24h No - ToO-MM-L PI <12h? yes?? No 24h Yes MXT-VT? ToO-MM-NL Automatic +PI <12h no? MAX 1/week Yes, 4-25 tiles 10minutes/tile s VHF<1h BX 24h Yes MXT photonlist TbE GP Triggered by ECLAIRs Automatic follow-up 0 yes Will be adjusted with the catalog list and threshold onboard No, but observation lasts 2 orbits 24h Yes Idem GRB SVOM Workshop, Les Houches, M. Huang 8

9 An overview of what happens of a SVOM Core Program (GRB) Observation 22s 5s 4.5min 1 st pass S-band 60min 30min 6hr 1hr 1hr Proc GCN VO F-SC S-Band CCC MC+SSDC GOS C Other large telescopes C-SC OPT F X-Band X-Band A. Claret SVOM Workshop, Les Houches, M. Huang 9

10 Data flow and time requirements from ground stations to Science s VHF Network Ground s X-band (HBK) X-band (Sanya) End of pass Max delay betwen 2 visi 10h ( 90%) Data acquisition on board Compressed RAW Data (Frames) Data flow decompression / routing (CNES, Toulouse) RAW Data (Frames) 2 hours (TBC ) Data latency 24h For Core program RAW Data (Frames) MC (Beijing) Processing duration 60 min Raw data available at MC 1 hour (TBC) L0c Data (CXG + MXT) L0c data available at MC Data latency 48h For ToO VHF Data (All onboard instrument) 5 sec 30 min (TBC) L0d Data (CXG + MXT) 15 min FPOC (CNES, Toulouse) Processing 15 min FSC (CEA, Saclay) 10h for Core Program and ToO 4 days for GP L0c Data (GRM + VT) 60 min CSC (NAOC, Beijing) 1 hour (TBC) data available at SC 14h (TBC) Data latency 5 days For General program SVOM Workshop, Les Houches, M. Huang 10