| Article | |
| Report number | AIDA-PUB-2012-003 |
| Title | Characterization of a tagged $\gamma$-ray beam line at the DAFNE Beam Test Facility |
| Author(s) | Cattaneo, P W (INFN, Pavia) ; Argan, A ; Boffelli, F ; Bulgarelli, A ; Buonomo, B ; Chen, A W ; D’Ammando, F ; FoggettA, L ; Froysland, T ; Fuschino, F ; Galli, M ; Gianotti, F ; Giuliani, A ; Longo, F ; Marisaldi, M ; Mazzitelli, G ; Pellizzoni, A ; Prest, M ; Pucella, G ; Quintieri, L ; Rappoldi, A ; Tavani, M ; Trifoglio, M ; Trois, A ; Valente, P ; Vallazza, E ; Vercellone, S ; Zambra, A ; Barbiellini, G ; Caraveo, P ; Cocco, V ; Costa, E ; De Paris, G ; Del Monte, E ; Di Cocco, G ; Donnarumma, I ; Evangelista, Y ; Feroci, M ; Ferrari, A ; Fiorini, M ; Labanti, C ; Lapshov, I ; Lazzarotto, F ; Lipari, P ; Mastropietro, M ; Mereghetti, S ; Morelli, E ; Moretti, E ; Morselli, A ; Pacciani, L ; Perotti, F ; Piano, G ; Picozza, P ; Pilia, M ; Porrovecchio, G ; Rapisarda, M ; Rubini, A ; Sabatini, S ; Soffitta, P ; Striani, E ; Vittorini, V ; Zanello, D ; Colafrancesco, S ; Giommi, P ; Pittori, C ; Santolamazza, P ; Verrecchia, F ; Salotti, L |
| Publication | 2012 |
| Imprint | 2012-05-11 |
| Number of pages | 23 |
| In: | Nucl. Instrum. Methods Phys. Res., A 674 (2012) 55-66 |
| DOI | 10.1016/j.nima.2012.01.049 |
| Subject category | Detectors and Experimental Techniques ; 8: Improvement and equipment of irradiation and test beam lines ; 8.2: Test beams infrastructure at CERN and Frascati |
| 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 difference with the post-bremsstrahlung electron energy [1] and [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. |
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Запись создана 2012-06-20, последняя модификация 2017-02-20
