Title :
Data acquisition in TileCal/ATLAS experiment. Design of the optical multiplexer board prototype
Author :
González, V. ; Torres, J. ; Soret, J. ; Sanchis, E. ; Martos, J. ; Castelo, J. ; Castillo, V. ; Cuenca, C. ; Ferrer, A. ; Fullana, E. ; Higón, E. ; Poveda, J. ; Martinez, A.R. ; Salvachua, B. ; Solans, C. ; Valls, J.A. ; Munar, A. ; Iglesias, C. ; Valero,
Author_Institution :
Dept. Ingenieria Electron., Valencia Univ.
Abstract :
The optical multiplexer board is one of the elements present in the read out chain of the tile calorimeter in ATLAS experiment. Due to radiation effects, two optical fibers with the same data come out from the front end boards to this board, which has to decide in real time which one carries good data and pass them to the read out driver motherboard for processing. This paper describes the design and tests of the first prototype, implemented as a 6U VME64x slave module, including both hardware and firmware aspects. In this last, algorithms for cyclic redundancy code checking are used to make the decision. Besides, the board may be used as a data injector for testing purposes of the read out driver motherboard
Keywords :
calorimeters; cyclic redundancy check codes; data acquisition; multiplexing equipment; optical fibres; particle calorimetry; radiation effects; 6U VME64x slave module; TileCal/ATLAS experiment; cyclic redundancy code checking; data acquisition; data injector; front end boards; optical fibers; optical multiplexer board prototype; radiation effects; read out driver motherboard; tile calorimeter read out chain; Data acquisition; Hardware; Microprogramming; Multiplexing; Optical design; Optical fibers; Prototypes; Radiation effects; Testing; Tiles;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2005 IEEE
Conference_Location :
Fajardo
Print_ISBN :
0-7803-9221-3
DOI :
10.1109/NSSMIC.2005.1596354
