OMP > Research > Techniques et missions spatiales > SVOM / ECLAIRs / DPIX



Le satellite SVOM

SVOM is a French-Chinese mission dedicated to the study of gamma-ray bursts. The detection of bursts is carried out on board the satellite using the ECLAIRs gamma telescope developed by IRAP, IRFU and APC. This instrument, produced under the supervision of the CNES and under the scientific responsibility of IRAP, also makes it possible to locate the position of the jump in the sky with an accuracy of a few arc minutes.
The main objective of the SVOM satellite is to study gamma-ray bursts in several wavelengths ranging from visible to X-ray/Gamma. Gamma-ray bursts are astrophysical phenomena that occur at cosmological distances and are among the most energetic phenomena in the universe.
Research Group : GAHEC

  • Scientific Responsible : J-L Atteia
  • Technical Manager : R. Pons

Technical Involvement


The SVOM satellite carries 4 instruments including ECLAIRs which is a wide-field coded aperture X/gamma telescope, including a detector plane made of a layer of CdTe detectors. IRAP is responsible for the design, manufacture and acceptance of the DPIX detection plan. The main features of the DPIX are:

  • 6400 CdTe detectors (≈1000cm2) cooled to -20°C,
  • 200 XRDPIX modules,
  • 8 sector reading electronics (ELS - 1 sector = 25 XRDPIX modules).

Objectives and Planning

September 2016 : PDR3 after mission restart for transition to phases C/D/E1
2017-mid-2018: Development of a DPIX qualification prototype (ProtoEQM)
Mid 2018: Characterization of the DPIX EQM
October 2018 : ECLIRs key point to start manufacturing the DPIX flight model
2019 : Implementation and integration of the DPIX PFM
Early 2020: Calibrations and delivery of the DPIX PFM
End of 2020 : Delivery of FM LIGHTINGS to China for SVOM launch at the end of 2021.

Further Resources :

The SVOM (Space Variable Objects Monitor) Project, in cooperation with China, consists in developing an X and gamma astronomy mission whose main objective is to observe and characterize gamma-ray bursts in the Universe. SVOM has been the subject of a MoU between the CNSA (Chinese Space Agency) and the CNES to define the sharing of responsibilities between agencies.

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