The Wide Field Monitor onboard the eXTP mission
M. Hernanz (a1, a2), S. Brandt (b), M. Feroci (c1, c2), P. Orleanski, (d), A. Santangelo (f), S. Schanne (g), Xin Wu (e), J. in't Zand (h), S.N., Zhang (i), Y.P. Xu (i), E. Bozzo (j), Y. Evangelista (c1, c2), J. L. G\'alvez, (a1, a2), C. Tenzer (f), F. Zwart (h), F.J. Lu (i)

TL;DR
The eXTP mission's Wide Field Monitor is a wide-band X-ray instrument designed for the 2025 launch, featuring advanced Silicon Drift Detectors and coded mask cameras for broad sky coverage and precise source localization.
Contribution
This paper presents the design and expected performance of the eXTP/WFM, including improvements over the earlier LOFT concept, for the first time.
Findings
Wide field of view of 90x180 degrees
Source localization accuracy of ~1 arcmin
Use of Silicon Drift Detectors for X-ray detection
Abstract
The eXTP (enhanced X-ray Timing and Polarimetry) mission is a major project of the Chinese Academy of Sciences (CAS) and China National Space Administration (CNSA) currently performing an extended phase A study and proposed for a launch by 2025 in a low-earth orbit. The eXTP scientific payload envisages a suite of instruments (Spectroscopy Focusing Array, Polarimetry Focusing Array, Large Area Detector and Wide Field Monitor) offering unprecedented simultaneous wide-band X-ray timing and polarimetry sensitivity. A large European consortium is contributing to the eXTP study and it is expected to provide key hardware elements, including a Wide Field Monitor (WFM). The WFM instrument for eXTP is based on the design originally proposed for the LOFT mission within the ESA context. The eXTP/WFM envisages a wide field X-ray monitor system in the 2-50 keV energy range, achieved through the…
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Taxonomy
TopicsCalibration and Measurement Techniques · Particle Detector Development and Performance · Nuclear Physics and Applications
