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The Calibration and Simulation of the GRB trigger detector of the Ultra Fast Flash Observatory

  • M.-H.A. Huang (a1), S. Ahmad (a2), P. Barrillon (a2), S. Brandt (a3), C. Budtz-Jørgensen (a3), A.J. Castro-Tirado (a4), S.-H. Chang (a5), Y.-Y. Chang (a6), C.R. Chen (a5), P. Chen (a6), H.S. Choi (a7), Y.J. Choi (a8), P. Connell (a9), S. Dagoret-Campagne (a2), C. Eyles (a9), B. Grossan (a10), J.J. Huang (a6), S. Jeong (a11), A. Jung (a11), J.-E. Kim (a11), M.-B. Kim (a12), S.-W. Kim (a13), Y.-W. Kim (a12), A.S. Krasnov (a14), J. Lee (a12), H. Lim (a12), C.-Y. Lin (a5), E.V. Linder (a10), T.-C. Liu (a6), N. Lund (a3), K.W. Min (a8), G.-W. Na (a11), J.-W. Nam (a6), M.I. Panasyuk (a14), I.H. Park (a12), V. Reglero (a9), J. Řípa (a12), J.M. Rodrigo (a9), G.F. Smoot (a10), J.-E. Suh (a11), S. Svertilov (a14), N. Vedenkin (a14), M.-Z. Wang (a6) and I. Yashin (a14)...

Abstract

The UFFO (Ultra-Fast Flash Observatory) is a GRB detector on board the Lomonosov satellite, to be launched in 2013. The GRB trigger is provided by an X-ray detector, called UBAT (UFFO Burst Alarm & Trigger Telescope), which detects X-rays from the GRB and then triggers to determine the direction of the GRB and then alerts the Slewing Mirror Telescope (SMT) to turn in the direction of the GRB and record the optical photon fluxes. This report details the calibration of the two components: the MAPMTs and the YSO crystals and simulations of the UBAT. The results shows that this design can observe a GRB within a field of view of ±35° and can trigger in a time scale as short as 0.2 – 1.0 s after the appearance of a GRB X-ray spike.

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References

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[1] Connell, P., Ahmad, S., Barrillon, P., et al., 2013, for the UFFO collaboration, proc. 2012, Gamma Ray Burst Symposium (Marbella, Spain) (Oct. 8–12, 2012)
[2]Jeong, S., Nam, J.W., Ahn, K.B., et al., 2013, for the UFFO collaboration, Opt. Express, 21, 2263
[3] Kim, J.E., Ahmad, S., Barrillon, P., et al., 2012, for the UFFO collaboration, Proc. SPIE 8443, 84432R; doi:10.1117/12.926348
[4] Park, I.H., Ahmad, S., Barrillon, P., et al., 2013, for UFFO collaboration, submitted to the New J. Phys.
[5] Yeh, P., Athar, A., La Barbera, N., et al., 2004, Mod. Phys. Lett. A., 19, 1117
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European Astronomical Society Publications Series
  • ISSN: 1633-4760
  • EISSN: 1638-1963
  • URL: /core/journals/european-astronomical-society-publications-series
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