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The Level 0 Pixel Trigger System for the ALICE experiment

The ALICE Silicon Pixel Detector contains 1200 readout chips. Fast-OR signals indicate the presence of at least one hit in the 8192 pixel matrix of each chip. The 1200 bits are transmitted every 100 ns on 120 data readout optical links using the G-Link protocol. The Pixel Trigger System extracts and...

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Detalles Bibliográficos
Autores principales: Aglieri-Rinella, G, Kluge, A, Krivda, M
Lenguaje:eng
Publicado: CERN 2007
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/2/01/P01007
https://dx.doi.org/10.5170/CERN-2007-001.361
http://cds.cern.ch/record/1020485
Descripción
Sumario:The ALICE Silicon Pixel Detector contains 1200 readout chips. Fast-OR signals indicate the presence of at least one hit in the 8192 pixel matrix of each chip. The 1200 bits are transmitted every 100 ns on 120 data readout optical links using the G-Link protocol. The Pixel Trigger System extracts and processes them to deliver an input signal to the Level 0 trigger processor targeting a latency of 800 ns. The system is modular and based on FPGA devices. The architecture allows the user to define and implement various trigger algorithms. The system uses advanced 12-channel parallel optical fiber modules operating at 1310 nm as optical receivers. Multi-channel G-Link receivers were realized in programmable hardware and tested. The design of the system and the progress of the ALICE Pixel Trigger project are described in this paper.