1 National Space Institute, Technical University of Denmark2 Astrophysics, National Space Institute, Technical University of Denmark3 National United University4 University of Paris-Sud - University of Paris XI5 Instituto de Astrofísica de Andalucía6 National Space Organization7 National Taiwan University8 Korea Institute of Industrial Technology9 Korea Advanced Institute of Science & Technology10 University of Valencia11 Ewha Womans University12 Sungkyunkwan University13 Yonsei University14 Moscow State University15 National Taiwan University16 Ewha Womans University17 Sungkyunkwan University18 Yonsei University19 Moscow State University
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.
E a S Publications Series, 2013, Vol 61, p. 531-535