The wide field monitor onboard the Chinese-European x-ray mission eXTP

Hernanz, M.; Brandt, S.; Zand, J. in’t; Evangelista, Y.; Meuris, A.; Tenzer, C.; Zampa, G.; Orleański, P.; Kalemci, Emrah; Sungur, Müberra; Schanne, S.; Zwart, F.; Rie, R. de la; Laubert, Phillip; Baren, Coen van; Aitink-Kroes, Gabby; Kuiper, L.; Bayer, Jörg; Hedderman, Paul; Pliego, S.; Xiong, Hao; Campana, R.; Monte, E. Del; Feroci, M.; Ceraudo, Francesco; Gevin, O.; Kuvvetli, I.; Tcherniak, Dmitri; Skup, Konrad; Michalska, Małgorzata; Nowosielski, W.; Hormaetxe, Ander; Gálvez, José-Luis; Ferrés, Patrícia; Patruno, A.; Bonvicini, W.; Antonelli, M.; Boezio, M.; Cirrincione, D.; Munini, R.; Rachevski, A.; Vacchi, A.; Zampa, N.; Rashevskaya, I.; Argan, A.; Turhan, Onur; Bozkurt, Ayhan; Onat, Ahmet Mesut; Bozzo, E.; Santangelo, A.; Zhang, Shuang‐Nan; Xu, Yupeng

doi:10.1117/12.2628335

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…Italy, under the coordination of the ASI, holds the PI-ship of the Large Area Detectors (LAD) and contributes to the three Wide Field Monitors (WFM) (see Figure 6). In the framework of a European contribution, currently not confirmed, the scientific payload of the mission consists of the following: The technological breakthrough of eXTP detection instrument relies on LAD [38] and WFM [39] large-area SDDs (derived form those of the ALICE experiment at CERN and optimized for space) and capillary plate collimators, able to guarantee high efficiency in few mm thickness and reduced weight with respect to proportional counters and mechanical collimators used in the past generation of large-area instruments.…”

Section: Extpmentioning

confidence: 99%

X-ray Technologies for Astrophysics Missions Supported by the Italian Space Agency

Miliucci,

Volpe,

Fabiani

et al. 2024

Condensed Matter

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The Italian Space Agency plays a key role in the fulfillment of space missions, contributing to the scientific, technological and economic progress in Italy. The agency accomplishes space experiments by collaborating with scientific and industrial entities, supporting them in the realization of new projects able to achieve, over the last two decades, unprecedented results and obtention of fundamental information on the birth and evolution of the universe. The paper describes a selection of X-ray technologies developed by the synergy between the Italian Space Agency and its principal collaborators which contributed to the main scientific results achieved over the years, together with the latest advances addressed to the next astrophysics missions.

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Section: Extpmentioning

confidence: 99%

X-ray Technologies for Astrophysics Missions Supported by the Italian Space Agency

Miliucci,

Volpe,

Fabiani

et al. 2024

Condensed Matter

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“…It exhibits sensitivity in the energy range from 2 to 8 keV with a total effective area of 300 cm 2 at 3 keV. The Wide-Field Monitor (WFM) is a coded-aperture instrument with a total field of view of 90°× 180°, tasked with the monitoring of the X-ray sky and identification of transient sources in the 2-50 keV energy range [3].…”

Section: Introductionmentioning

confidence: 99%

Characterization of the eXTP-LAD collimators

Zhao,

Luo,

Ceraudo

et al. 2024

Preprint

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The enhanced X-ray Timing and Polarimetry mission (eXTP) is a nextgeneration flagship X-ray astronomy satellite currently in phase-B study. The large Area Detector (LAD) on board eXTP contains 40 modules, each consisting of a set of 4×4 large area SDDs and 4×4 collimators, and has a designed effective area of 3.0 m2 at 8 keV and a Field of View (FoV) of 1°. To achieve such a large effective area, the collimator’s Open Area Ratio (OAR) should be greater than 70%. In this paper, we introduce the measurement methods used to determine the OAR and the rocking curve (angular response) of the LAD collimator at the 100-m X-ray Test Facility (100XF) of the Institute of High Energy Physics (IHEP) in Beijing, and report the results of the collimators manufactured under different conditions. The measured OARs of the collimators are usually smaller than the theoretical values by a few percent, which is due to the non-uniformity and irregularity of the pores. The measured rocking curves are usually broader than the theoretical triangular curves, and the lower the energy of the incident X-ray the broader the rocking curve. This broadening of the rocking curve is the result of reflection on the inner wall of the pores. Our results also show that increasing the etching time in the manufacturing of the collimators can increase the OARs but does not change significantly the shape of the rocking curves.

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“…An update on the details of the instrument and its scientific capability will be presented within these proceedings. 6 The processing hardware (see §2) resides in the Instrument Control Unit (ICU) of the WFM. The ICU (actually two units in cold redundancy) is located inside the spacecraft platform cabin (service module).…”

Section: Introductionmentioning

confidence: 99%

The instrument control unit processing hardware and software of the wide field monitor on eXTP

Kalemci

Turhan

Kuvvetli³

et al. 2022

Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray

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The eXTP (enhanced X-ray Timing and Polarimetry) mission is a joint large mission of the Chinese Academy of Sciences (CAS) and European partners designed to study the state of matter under extreme conditions of density, gravity and magnetism. One of the four major instruments on eXTP is the Wide Field Monitor (WFM) which consist of 3 pairs of coded mask cameras with a total combined Field of View (FoV) of 90×180 degrees at zero response. With its enormous FoV, a source localization accuracy of 1 arcmin and an energy range of 2-50 keV the primary objective of the WFM is to provide triggers for the pointing instruments on the eXTP with less than one day reaction time. Its large area and resolution will be enough to detect state changes in compact objects as well.The WFM instrument is controlled by the Data Handling Unit located inside the Instrument Control Unit. The challenging requirement of broadcasting time and end-position of the triggering event to end-users in 30s necessitates special on-board data processing software (the eXTP burst online trigger, or XBOT), a hardware that can perform such processing and associated control software that would feed the raw data from the cameras into the XBOT and relaying alerts to the on-board data handling unit on the spacecraft side. Moreover, the WFM software performs several tasks related to the science data preparation, telecommand and telemetry management, and control of the cameras utilizing four LEON4 processing cores of E698 PM SoC from OCE Technology. This presentation discusses the details of the processing hardware and the interaction between different software components of the WFM on eXTP.

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The wide field monitor onboard the Chinese-European x-ray mission eXTP

Cited by 8 publications

References 10 publications

X-ray Technologies for Astrophysics Missions Supported by the Italian Space Agency

X-ray Technologies for Astrophysics Missions Supported by the Italian Space Agency

Characterization of the eXTP-LAD collimators

The instrument control unit processing hardware and software of the wide field monitor on eXTP

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