27 September 2012 On-ground calibration of AGILE-GRID with a photon beam: results and lessons for the future
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Abstract
At the core of the AGILE scientific instrument, designed to operate on a satellite, there is the Gamma Ray Imaging Detector (GRID) consisting of a Silicon Tracker (ST), a Cesium Iodide Mini-Calorimeter and an Anti-Coincidence system of plastic scintillator bars. The ST needs an on-ground calibration with a γ-ray beam to validate the simulation used to calculate the energy response function and the effective area versus the energy and the direction of the γ rays. A tagged γ-ray beam line was designed at the Beam Test Facility (BTF) of the INFN Laboratori Nazionali of Frascati (LNF), based on an electron beam generating γ rays through bremsstrahlung in a position-sensitive target. The γ-ray energy is deduced by the difference with the post-bremsstrahlung electron energy1-.2 The electron energy is measured by a spectrometer consisting of a dipole magnet and an array of position sensitive silicon strip detectors, the Photon Tagging System (PTS). The use of the combined BTF-PTS system as tagged photon beam requires understanding the efficiency of γ-ray tagging, the probability of fake tagging, the energy resolution and the relation of the PTS hit position versus the γ-ray energy. This paper describes this study comparing data taken during the AGILE calibration occurred in 2005 with simulation.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. W. Cattaneo, P. W. Cattaneo, A. Rappoldi, A. Rappoldi, A. Argan, A. Argan, B. Buonomo, B. Buonomo, A. Bulgarelli, A. Bulgarelli, A. W. Chen, A. W. Chen, F. D'Ammando, F. D'Ammando, L. Foggetta, L. Foggetta, F. Fuschino, F. Fuschino, M. Galli, M. Galli, F. Gianotti, F. Gianotti, A. Giuliani, A. Giuliani, F. Longo, F. Longo, M. Marisaldi, M. Marisaldi, G. Mazzitelli, G. Mazzitelli, A. Pellizzoni, A. Pellizzoni, M. Prest, M. Prest, G. Pucella, G. Pucella, L. Quintieri, L. Quintieri, M. Tavani, M. Tavani, M. Trifoglio, M. Trifoglio, A. Trois, A. Trois, P. Valente, P. Valente, E. Vallazza, E. Vallazza, S. Vercellone, S. Vercellone, G. Barbiellini, G. Barbiellini, P. Caraveo, P. Caraveo, E. Costa, E. Costa, G. De Paris, G. De Paris, E. Del Monte, E. Del Monte, G. Di Cocco, G. Di Cocco, I. Donnarumma, I. Donnarumma, Y. Evangelista, Y. Evangelista, A. Ferrari, A. Ferrari, M. Feroci, M. Feroci, M. Fiorini, M. Fiorini, M. Giusti, M. Giusti, C. Labanti, C. Labanti, I. Lapshov, I. Lapshov, F. Lazzarotto, F. Lazzarotto, P. Lipari, P. Lipari, F. Lucarelli, F. Lucarelli, S. Mereghetti, S. Mereghetti, E. Morelli, E. Morelli, E. Moretti, E. Moretti, A. Morselli, A. Morselli, L. Pacciani, L. Pacciani, F. Perotti, F. Perotti, G. Piano, G. Piano, P. Picozza, P. Picozza, M. Pilia, M. Pilia, M. Rapisarda, M. Rapisarda, A. Rubini, A. Rubini, S. Sabatini, S. Sabatini, P. Soffitta, P. Soffitta, E. Striani, E. Striani, V. Vittorini, V. Vittorini, D. Zanello, D. Zanello, S. Colafrancesco, S. Colafrancesco, P. Giommi, P. Giommi, C. Pittori, C. Pittori, P. Santolamazza, P. Santolamazza, F. Verrecchia, F. Verrecchia, L. Salotti, L. Salotti, } "On-ground calibration of AGILE-GRID with a photon beam: results and lessons for the future", Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84434D (27 September 2012); doi: 10.1117/12.926445; https://doi.org/10.1117/12.926445
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