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Simulations of the SVOM/ECLAIRs dynamic background: a fast, accurate and general approach for wide-field hard X-ray instruments

  • Sujay MateEmail author
  • Laurent Bouchet
  • Jean-Luc Atteia
  • Arnaud Claret
  • Bertrand Cordier
  • Nicolas Dagoneau
  • Olivier Godet
  • Aleksandra Gros
  • Stéphane Schanne
  • Henri Triou
Original Article
  • 9 Downloads

Abstract

The Space Variable Object Monitor (SVOM) is a forthcoming Chinese - French astrophysics space mission dedicated to the study of Gamma-ray bursts and high-energy transients. ECLAIRs, a wide-field hard X-ray coded mask imager, is the leading instrument for the transient detection and their first localisation. The sensitivity of such instruments is usually limited by the background, either of instrumental or astrophysical origin. Detailed estimations of the background are obtained by simulating the interaction of particles with the matter using, in the present case, the GEANT4 Monte-Carlo toolkit. However, this is a time consuming process, especially when it is needed to carry out all possible geometrical and orbital configurations. Instead, we present a much faster method that allows computing the background in either a static or dynamic (time dependent) way. The method is based on the preliminary calculation of a large particle database using the GEANT4 toolkit followed by a selection process based on the incoming direction and energy of the particles. This approach is as accurate as direct Monte-Carlo methods, while it reduces the computation time by a factor of 103 − 104 for our application. We apply this method to compute the SVOM/ECLAIRs dynamic background.

Keywords

Instrumentation: detectors Methods: numerical (Monte - Carlo) Techniques: miscellaneous Telescopes (SVOM/ECLAIRs) 

Notes

Acknowledgements

We thank the anonymous referee for the detailed and valuable suggestions which have helped us to improve the paper.

References

  1. 1.
    Agostinelli, S., Allison, J., Amako, K., et al.: GEANT4 - a simulation toolkit. Nucl. Instruments Methods Phys. Res. A 506, 250 (2003).  https://doi.org/10.1016/S0168-9002(03)01368-8 ADSCrossRefGoogle Scholar
  2. 2.
    Ajello, M., Greiner, J., Sato, G., et al.: INTEGRAL hard X-ray spectra of the cosmic X-ray background and Galactic ridge emission. Astrophys. J. 689, 666 (2008).  https://doi.org/10.1086/592595 ADSCrossRefGoogle Scholar
  3. 3.
    Bringer, O., Van Lauwe, A., Goutte, H: Etude de la Validité d’une Hypothèse d’Irradiation Continue dans le Cadre de Calculs d’Activation Rèsiduelle du Détecteur ECLAIRs, Tech. rep (2013)Google Scholar
  4. 4.
    Campana, R., Feroci, M., Del Monte, E., et al.: Background simulations for the Large Area Detector onboard LOFT. Exp. Astron. 36, 451 (2013).  https://doi.org/10.1007/s10686-013-9341-6 ADSCrossRefGoogle Scholar
  5. 5.
    Churazov, E., Sazonov, S., Sunyaev, R., Revnivtsev, M.: Hard X-ray emission of the Earth’s atmosphere: Monte Carlo simulations. Mon. Not. R. Astron. Soc. 385, 719 (2008)ADSCrossRefGoogle Scholar
  6. 6.
    Churazov, E., Sunyaev, R., Revnivtsev, M., et al.: INTEGRAL observations of the cosmic X-ray background in the 5–100 keV range via occultation by the Earth. Astron. Astrophys. 467, 529 (2007).  https://doi.org/10.1051/0004-6361:20066230 ADSCrossRefGoogle Scholar
  7. 7.
    Cordier, B., Desclaux, F., Foliard, J., Schanne, S.: SVOM pointing strategy: How to optimize the redshift measurements?. In: AIP Conference Proceedings, vol. 1000 (AIP), 585–588. http://aip.scitation.org/doi/abs/10.1063/1.2943538 (2008)
  8. 8.
    Cordier, B., Wei, J., Atteia, J. L., Basa, S., Claret, A., Daigne, F., Deng, J., Dong, Y., Godet, O., Goldwurm, A., Götz, D., Han, X., Klotz, A., Lachaud, C., Osborne, J., Qiu, Y., Schanne, S., Wu, B., Wang, J., Wu, C., Xin, L., Zhang, B., Zhang, S. N.: The SVOMgamma-ray burst mission. Proc. Sci.  https://doi.org/10.22323/1.233.0005, arXiv:1512.03323(2014)
  9. 9.
    Cumani, P., Hernanz, M., Kiener, J., Tatischeff, V., Zoglauer, A.: Background for a gamma-ray satellite on a low-Earth orbit. Exp. Astron.  https://doi.org/10.1007/s10686-019-09624-0, arXiv:1902.06944 (2019)ADSCrossRefGoogle Scholar
  10. 10.
    Ferguson, C., Barlow, E.J., Bird, A.J., et al.: The INTEGRAL mass model-TIMM. A&A 411, 19 (2003).  https://doi.org/10.1051/0004-6361:20031403 ADSCrossRefGoogle Scholar
  11. 11.
    Giacconi, R., Gursky, H., Paolini, F.R., Rossi, B.B.: INTEGRAL observations of the cosmic X-ray background in the 5–100 keV range via occultation by the Earth. Phys. Rev. Lett. 9, 439 (1962).  https://doi.org/10.1103/PhysRevLett.9.439 ADSCrossRefGoogle Scholar
  12. 12.
    Ginet, G.P., Madden, D., Dichter, B.K., Brautigam, D.H.: Energetic proton maps for the South Atlantic anomaly. In: 2007 IEEE Radiation Effects Data Workshop (IEEE), pp. 1–8. http://ieeexplore.ieee.org/document/4342532/ (2007)
  13. 13.
    Godet, O., Nasser, G., Atteia, J.L., et al. (2014),  https://doi.org/10.1117/12.2055507
  14. 14.
    Gruber, D.E., Matteson, J.L., Peterson, L.E., Jung, G.V.: The spectrum of diffuse cosmic hard X-rays measured with HEAO 1. Astrophys. J. 520, 124 (1999)ADSCrossRefGoogle Scholar
  15. 15.
    Henderson, M.D.: Shuttle program : Euler angles, quaternions and transformation matrices working relationships, Tech. rep (1977)Google Scholar
  16. 16.
    Howell, J.R., Menguc, M.P., Siegel, R.: Thermal radiation heat transfer, 6th edn. (Taylor & Francis). https://books.google.fr/books?id=4qYprgEACAAJ (2015)
  17. 17.
    Jaubert, J., Morand, V., Jouret, M.: Realistic mission scenarios for satellite power analysis, Tech. rep (2017)Google Scholar
  18. 18.
    Juul, N.H.: Investigation of approximate methods for calculation of the diffuse radiation configuration view factor between two spheres. Lett. Heat Mass Transf. 3, 513 (1976).  https://doi.org/10.1016/0094-4548(76)90006-0 CrossRefGoogle Scholar
  19. 19.
    Lacombe, K., Nasser, G., Amoros, C., et al.: Development of a 32-detector CdTe matrix for the SVOM ECLAIRs X/Gamma camera: preliminary results. Nuclear Instruments and Methods in Physics Research A 732, 122 (2013).  https://doi.org/10.1016/j.nima.2013.07.003 ADSCrossRefGoogle Scholar
  20. 20.
    Lacombe, K., Dezalay, J.P., Houret, B., et al.: Spectral performance of ECLAIRs flight detectors on SVOM mission. Astroparticle Physics 103, 131 (2018).  https://doi.org/10.1016/j.astropartphys.2018.08.002 ADSCrossRefGoogle Scholar
  21. 21.
    Moretti, A., Pagani, C., Cusumano, G., et al.: A new measurement of the cosmic X-ray background. Astron. Astrophys. 493, 501 (2009)ADSCrossRefGoogle Scholar
  22. 22.
    Odaka, H., Asai, M., Hagino, K., et al.: Modeling of proton-induced radioactivation background in hard X-ray telescopes: Geant4-based simulation and its demonstration by Hitomi’s measurement in a low Earth orbit. Nucl. Instruments Methods Phys. Res. Sect. A Accel. Spectrometers, Detect. Assoc. Equip. 891, 92 (2018).  https://doi.org/10.1016/J.NIMA.2018.02.071 ADSCrossRefGoogle Scholar
  23. 23.
    Perry, K.L., Ginet, G., Quigley, S., Madden, D.: Energetic proton maps for the South Atlantic anomaly. In: Am. Geophys. Union, Fall Meet. 2008, Abstr. id.SM11A-1584. http://adsabs.harvard.edu/abs/2008AGUFMSM11A1584P (2008)
  24. 24.
    Sauvageon, A.: Count-rates and spectra from simulations. Tech. rep (2009)Google Scholar
  25. 25.
    Sazonov, S., Churazov, E., Sunyaev, R., Revnivtsev, M.: Hard X-ray emission of the Earth’s atmosphere: Monte Carlo simulations. Mon. Not. R. Astron. Soc. 377, 1726 (2007)ADSCrossRefGoogle Scholar
  26. 26.
    Schanne, S., Provost, H. L., Kestener, P., et al. (2014),  https://doi.org/10.1109/NSSMIC.2013.6829408
  27. 27.
    Shaw, S.E., Westmore, M.J., Bird, A.J., et al.: A mass model for estimating the gamma ray background of the burst and transient source experiment. Astron. Astrophys. 398, 391 (2003).  https://doi.org/10.1051/0004-6361:20021668 ADSCrossRefGoogle Scholar
  28. 28.
    Sizun, P.: Synthesis of ECLAIRs Geant4 Simulations, Tech. rep. (2011)Google Scholar
  29. 29.
    Sizun, P.: Status of model and simulations Other background components, Tech. rep. (2015)Google Scholar
  30. 30.
    Türler, M., Chernyakova, M., Courvoisier, T.J.-L., et al.: INTEGRAL hard X-ray spectra of the cosmic X-ray background and Galactic ridge emission. Astron. Astrophys. 512, A49 (2010).  https://doi.org/10.1051/0004-6361/200913072 CrossRefGoogle Scholar
  31. 31.
    Usoskin, I.G., Alanko-Huotari, K., Kovaltsov, G.A., Mursula, K.: Heliospheric modulation of cosmic rays: Monthly reconstruction for 1951–2004. J. Geophys. Res. 110, A12108 (2005).  https://doi.org/10.1029/2005JA011250 ADSCrossRefGoogle Scholar
  32. 32.
    Watts, R.G.: Radiant heat transfer to earth satellites. J. Heat Transfer 87, 369 (1965).  https://doi.org/10.1115/1.3689118 CrossRefGoogle Scholar
  33. 33.
    Wei, J., Cordier, B., Antier, S., Antilogus, P., Atteia, J.-L., Bajat, A., Basa, S., Beckmann, V., Bernardini, M. G., Boissier, S., Bouchet, L., Burwitz, V., Claret, A., Dai, Z.-G., Daigne, F., Deng, J., Dornic, D., Feng, H., Foglizzo, T., Gao, H., Gehrels, N., Godet, O., Goldwurm, A., Gonzalez, F., Gosset, L., Götz, D., Gouiffes, C., Grise, F., Gros, A., Guilet, J., Han, X., Huang, M., Huang, Y.-F., Jouret, M., Klotz, A., La Marle, O., Lachaud, C., Le Floch, E., Lee, W., Leroy, N. , Li, L.-X. , Li, S. C., Li, Z., Liang, E.-W., Lyu, H., Mercier, K., Migliori, G., Mochkovitch, R., O’Brien, P., Osborne, J., Paul, J., Perinati, E., Petitjean, P., Piron, F., Qiu, Y., Rau, A., Rodriguez, J., Schanne, S., Tanvir, N., Vangioni, E., Vergani, S., Wang, F.-Y., Wang, J., Wang, X.-G., Wang, X.-Y., Watson, A., Webb, N., Wei, J. J., Willingale, R., Wu, C., Wu, X. -F., Xin, L.-P., Xu, D., Yu, S., Yu, W.-F., Yu, Y.-W., Zhang, B., Zhang, S.-N., Zhang, Y., Zhou, X. L.: The deep and transient Universe in the SVOM Era: New challenges and opportunities - scientific prospects of the SVOM mission. arXiv:1610.06892, https://ui.adsabs.harvard.edu/abs/2016arXiv161006892W (2016)
  34. 34.
    Weidenspointner, G., Kiener, J., Gros, M., et al.: First identification and modelling of SPI background lines. Astron. Astrophys. 411, L113 (2003).  https://doi.org/10.1051/0004-6361:20031209 ADSCrossRefGoogle Scholar
  35. 35.
    Zhao, D., Cordier, B., Sizun, P., et al.: Influence of the Earth on the background and the sensitivity of the GRM and ECLAIRs instruments aboard the Chinese-French mission SVOM. Exp. Astron. 34, 705 (2012).  https://doi.org/10.1007/s10686-012-9313-2 ADSCrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Sujay Mate
    • 1
    Email author
  • Laurent Bouchet
    • 1
  • Jean-Luc Atteia
    • 1
  • Arnaud Claret
    • 2
  • Bertrand Cordier
    • 2
  • Nicolas Dagoneau
    • 2
  • Olivier Godet
    • 1
  • Aleksandra Gros
    • 2
  • Stéphane Schanne
    • 2
  • Henri Triou
    • 2
  1. 1.IRAP, Université de Toulouse, CNES, CNRS, UPSToulouseFrance
  2. 2.CEA Paris Saclay, IRFU/Département d’Astrophysique - AIMGif sur YvetteFrance

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