Testing and calibrating analogue inputs to the ATLAS Level-1 Calorimeter Trigger

The ATLAS Level-1 Calorimeter Trigger is a hardwarebased system which aims to identify objects with high transverse momentum within an overall latency of 2.5 μs. It is composed of a PreProcessor system (PPr) which digitises 7200 analogue input channels, determines the bunch crossing of the interact...

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Detalles Bibliográficos
Autores principales: Achenbach, R, Adragna, P, Aharrouche, M, Andrei, V, Åsman, B, Barnett, B M, Bauss, B, Bendel, M, Bohm, C, Booth, J R A, Bracinik, J, Brawn, I P, Charlton, D G, Childers, J T, Collins, N J, Curtis, C J, Davis, A O, Eckweiler, S, Eisenhandler, E F, Faulkner, P J W, Fleckner, J, Föhlisch, F, Gee, C N P, Gillman, A R, Goringer, C, Groll, M, Hadley, D R, Hanke, P, Hellman, S, Hidvegi, A, Hillier, S J, Johansen, M, Kluge, E E, Kühl, T, Landon, M, Lendermann, V, Lilley, J N, Mahboubi, K, Mahout, G, Meier, K, Middleton, R P, Moa, T, Morris, J D, Müller, F, Neusiedl, A, Ohm, C, Oltmann, B, Perera, V J O, Prieur, D P F, Qian, W, Rieke, S, Rühr, F, Sankey, D P C, Schäfer, U, Schmitt, K, Schultz-Coulon, H C, Seidler, P, Silverstein, S, Sjölin, J, Staley, R J, Stamen, R, Stockton, M C, Tan, C L A, Tapprogge, S, Thomas, J P, Thompson, P D, Watkins, P M, Watson, A, Weber, P, Wessels, M, Wildt, M
Lenguaje:eng
Publicado: CERN 2008
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.5170/CERN-2008-008.467
http://cds.cern.ch/record/1138900
Descripción
Sumario:The ATLAS Level-1 Calorimeter Trigger is a hardwarebased system which aims to identify objects with high transverse momentum within an overall latency of 2.5 μs. It is composed of a PreProcessor system (PPr) which digitises 7200 analogue input channels, determines the bunch crossing of the interaction, applies a digital noise filter, and provides a fine calibration; and two subsequent digital processors. The PreProcessor system needs various channel dependent parameters to be set in order to provide digital signals which are aligned in time and have proper energy calibration. The different techniques which are used to derive these parameters are described along with the quality tests of the analogue input signals.

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