11th Workshop on Electronics for LHC and future Experiments

Services for the read-out of the ATLAS TRT

Not scheduled

1m

Heidelberg

Poster

Speaker

Mr Herve Blampey (CERN)

Description

The read-out of the ATLAS TRT requires about 30000 digital links working at 40 Mbits/s. For cost reasons it was not possible to use fibre optics technology in the tracker volume of ATLAS. LVDS links using very thin twisted pair lins (36 AWG) have been implemented up to a point where a small number of optical Gbits links are used. Complex harnesses, including the small twisted pairs, the low and high voltage cables have been designed and are currently being fabricated. The paper will focus on the difficulties encountered to run high speed links on very thin cables and show how they were specified and validated. Then the production process and its status will be presented.