Title :
Development of the Optical Multiplexer Board Prototype for Data Acquisition in the TileCal System
Author :
González, V. ; Sanchis, E. ; Soret, J. ; Torres, J. ; Castelo, J. ; Castillo, V. ; Cuenca, C. ; Ferrer, A. ; Fullana, E. ; Higón, E. ; Poveda, J. ; Ruiz, A. ; Salvachua, B. ; Solans, C. ; Valls, J.A. ; Munar, A. ; Iglesias, C. ; Valero, A.
Author_Institution :
Dept. of Electron. Eng., Univ. of Valencia
Abstract :
This paper describes the development of the optical multiplexer board (OMB), also known as PreROD board, for the TileCal readout system in the ATLAS experiment. The aim of this board is to overcome the problems that may arise in the integrity of data due to radiation effects. The solution adopted has been to add redundancy to data transmission and so two optical fibers with the same data come out from the detector front end boards. The OMB has to decide in real time which fiber, eventually, carries data with no errors switching it to the output link connected to the read out driver (ROD) motherboard where data processing takes place. Besides, the board may be also used as a data injector for testing purposes of the ROD motherboard. The paper describes the design and tests of the first prototype, implemented as a 6U VME64x slave module, including both hardware aspects, focusing on signal integrity problems, and firmware aspects, dealing with the cyclic redundancy code algorithms used to check data consistency used to make the decision
Keywords :
calorimeters; cyclic redundancy check codes; data acquisition; fault tolerance; field programmable gate arrays; firmware; high energy physics instrumentation computing; multiplexing equipment; nuclear electronics; optical fibre networks; particle calorimetry; position sensitive particle detectors; readout electronics; 6U VME64x slave module; ATLAS experiment; OMB; PreROD board; TileCal readout system; cyclic redundancy code algorithms; data acquisition; data injector; data processing; data transmission; detector front end boards; fault tolerance; field programmable gate arrays; firmware aspects; integrated circuit radiation effects; optical fibers; optical multiplexer board prototype; read out driver motherboard; signal integrity problems; Data acquisition; Data communication; Data processing; Multiplexing; Optical fiber testing; Optical fibers; Prototypes; Radiation effects; Redundancy; Signal design; Data acquisition; fault tolerance; field programmable gate arrays; integrated circuit radiation effects;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2006.877861
