The readout system for the LHCb outer tracker

Authors :: Wiedner, D.
Albrecht, J.
Bachmann, S.
Deissenroth, M.
Dubitzki, R.
Eisele, F.
Haas, T.
Ketel, T.
Knopf, J.
Rausch, A.
Rusnyak, R.
Schwemmer, R.
Stange, U.
Trunk, U.
Uwer, U.
Apeldorn, G.
Bagaturia, I.
Bauer, T.
Berkien, A.
Blouw, J.
Bos, E.
Merk, M.
Nardulli, J.
Nedos, M.
Pellegrino, A.
Simoni, E.
Sluijk, T.
Spelt, J.
Jeroen van Tilburg
Tuning, N.
Vankow, P.
Guz, Y.
Spaan, B.
Warda, K.
Hommels, Bart
Source :: INSPIRE-HEP
Abstract: The LHCb Outer Tracker is composed of 55 000 straw drift tubes. The requirements for the OT electronics are the precise (1 ns) drift time measurement at 6 % occupancy and 1 MHz readout. Charge signals from the straw detector are amplified, shaped and discriminated by ATLAS ASDBLR chips. Drift-times are determined and stored in the OTIS TDC and put out to a GOL serializer at L0 accept. Optical fibres carry the data 90 m to the TELL1 acquisition board. The full readout chain performed well in an e- test beam.