The X-/Gamma-ray camera ECLAIRs for the Gammay-ray burst mission SVOM
O. Godet, G. Nasser, J.-L. Atteia, B. Cordier, P. Mandrou, D. Barret,, H. Triou, R. Pons, C. Amoros, S. Bordon, O. Gevin, F. Gonzalez, D. G\"otz, A., Gros, B. Houret, C. Lachaud, K. Lacombe, W. Marty, K. Mercier, D. Rambaud, P., Ramon, G. Rouaix, S.Schanne, V Waegebaert

TL;DR
ECLAIRs is a wide-field coded mask gamma-ray camera designed for the SVOM mission, optimized for detecting high-redshift and low-luminosity GRBs with a low-energy threshold of 4 keV, aiming to detect around 200 GRBs over three years.
Contribution
This paper details the design, optimization, and testing of ECLAIRs, including its detector modules and electronics, to enhance gamma-ray burst detection capabilities in space.
Findings
ECLAIRs is expected to detect approximately 200 GRBs during its mission.
The detector modules and electronics have been tested for performance and operability.
The instrument's design optimizes sensitivity to high-redshift and low-luminosity GRBs.
Abstract
We present ECLAIRs, the Gamma-ray burst (GRB) trigger camera to fly on-board the Chinese-French mission SVOM. ECLAIRs is a wide-field (\,sr) coded mask camera with a mask transparency of 40\% and a 1024 detection plane coupled to a data processing unit, so-called UGTS, which is in charge of locating GRBs in near real time thanks to image and rate triggers. We present the instrument science requirements and how the design of ECLAIRs has been optimized to increase its sensitivity to high-redshift GRBs and low-luminosity GRBs in the local Universe, by having a low-energy threshold of 4 keV. The total spectral coverage ranges from 4 to 150 keV. ECLAIRs is expected to detect GRBs of all types during the nominal 3 year mission lifetime. To reach a 4 keV low-energy threshold, the ECLAIRs detection plane is paved with 6400 and 1…
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