Within its first year of operation, the BaBar Silicon Vertex Tracker (SVT) has accomplished its primary design goal, measuring the z vertex coordinate with sufficient accuracy as to allow the measurement of the time-dependent CP asymmetry in the neutral B-meson system. The SVT consists of five layers of double-sided, AC-coupled silicon-strip detectors of 300 μm thickness with a readout strip pitch of 50-210 μm and a stereo angle of 90° between the strips on the two sides. Detector alignment and performance with respect to spatial resolution and efficiency in the reconstruction of single hits are discussed. In the day-to-day operation of the SVT, radiation damage and protection issues were of primary concern. The SVT is equipped with a dedicated system (SVTRAD) for radiation monitoring and protection, using reverse-biased photodiodes. The evolution of the SVTRAD thresholds on the tolerated radiation level is described. Results on the first-year radiation exposure as measured with the SVTRAD system and on the so far accumulated damage are presented. The implications of test-irradiation results and possible future PEP-II luminosity upgrades on the radiation limited lifetime of the SVT are discussed.

Bozzia, C., Carassiti, V., Ramusino, A., Dittongo, S., Folegani, M., Piemontese, L., et al. (2001). First-year experience with the BaBar silicon vertex tracker. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 473(1-2), 7-16 [10.1016/S0168-9002(01)01113-5].

First-year experience with the BaBar silicon vertex tracker

CARPINELLI, Massimo;
2001

Abstract

Within its first year of operation, the BaBar Silicon Vertex Tracker (SVT) has accomplished its primary design goal, measuring the z vertex coordinate with sufficient accuracy as to allow the measurement of the time-dependent CP asymmetry in the neutral B-meson system. The SVT consists of five layers of double-sided, AC-coupled silicon-strip detectors of 300 μm thickness with a readout strip pitch of 50-210 μm and a stereo angle of 90° between the strips on the two sides. Detector alignment and performance with respect to spatial resolution and efficiency in the reconstruction of single hits are discussed. In the day-to-day operation of the SVT, radiation damage and protection issues were of primary concern. The SVT is equipped with a dedicated system (SVTRAD) for radiation monitoring and protection, using reverse-biased photodiodes. The evolution of the SVTRAD thresholds on the tolerated radiation level is described. Results on the first-year radiation exposure as measured with the SVTRAD system and on the so far accumulated damage are presented. The implications of test-irradiation results and possible future PEP-II luminosity upgrades on the radiation limited lifetime of the SVT are discussed.
Articolo in rivista - Articolo scientifico
BaBar experiment; Silicon-strip detector;
English
7
16
10
Bozzia, C., Carassiti, V., Ramusino, A., Dittongo, S., Folegani, M., Piemontese, L., et al. (2001). First-year experience with the BaBar silicon vertex tracker. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 473(1-2), 7-16 [10.1016/S0168-9002(01)01113-5].
Bozzia, C; Carassiti, V; Ramusino, A; Dittongo, S; Folegani, M; Piemontese, L; Abbott, B; Breon, A; Clark, A; Dow, S; Fan, Q; Goozen, F; Hernikl, C; Karcher, A; Kerth, L; Kipnis, I; Kluth, S; Lynch, G; Levi, M; Luft, P; Luo, L; Nyman, M; Pedrali Noy, M; Roe, N; Zizka, G; Roberts, D; Schieck, J; Barni, D; Brenna, E; Defendi, I; Forti, A; Giugni, D; Lanni, F; Palombo, F; Vaniev, V; Leona, A; Mandelli, E; Manfredi, P; Perazzo, A; Re, V; Angelini, C; Batignani, G; Bettarini, S; Bondioli, M; Bosi, F; Calderini, G; Carpinelli, M; Forti, F; Gagliardi, D; Giorgi, M; Lusiani, A; Mammini, P; Morganti, M; Morsani, F; Neri, N; Paoloni, E; Profeti, A; Rama, M; Rampino, G; Rizzo, G; Sandrelli, F; Simi, G; Triggiani, G; Tritto, S; Vitale, R; Walsh, J; Burchat, P; Cheng, C; Kirkby, D; Meyer, T; Roat, C; Bona, M; Bianchi, F; Daudo, F; Di Girolamo, B; Gamba, D; Giraudo, G; Grosso, P; Romero, A; Smol, A; Trapani, P; Zanin, D; Bosisio, L; Della Ricca, G; Rashevskaia, I; Lanceri, L; Pompili, A; Poropat, P; Prest, M; Rastelli, C; Vallazza, E; Vuagnin, G; Hast, C; Potter, E; Sharma, V; Burke, S; Callahan, D; Campagnari, C; Dahmes, B; Eppich, A; Hale, D; Hall, K; Hart, P; Kuznetsova, N; Kyre, S; Levy, S; Long, O; May, J; Richman, J; Verkerke, W; Witherell, M; Beringer, J; Eisner, A; Frey, A; Grillo, A; Grothe, M; Johnson, R; Kroeger, W; Lockman, W; Pulliam, T; Rowe, W; Schmitz, R; Seiden, A; Spencer, E; Turri, M; Walkowiak, W; Wilder, M; Charles, E; Elmer, P; Nielsen, J; Orejudos, W; Scott, I; Zobernig, H
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390065
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