%0 Journal Article
%T Performance of the Low-Jitter High-Gain/Bandwidth Front-End Electronics of the HADES tRPC Wall
%A Belver, D.
%A Cabanelas, P.
%A Castro, E.
%A Garzon, J. A.
%A Gil, A.
%A Gonzalez-Diaz, D.
%A Koenig, W.
%A Traxler, M.
%J IEEE Transactions on Nuclear Science
%D 2010
%V 57
%N 5
%I Ieee-Inst Electrical Electronics Engineers Inc
%@ 0018-9499
%G English
%F Belver_etal2010
%O ISI:000283440400007
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=349), last updated on Thu, 24 Mar 2011 11:57:59 +0000
%X A front-end electronics (FEE) chain for accurate time measurements has been developed for the new Resistive Plate Chamber (RPC)-based Time-of-Flight (TOF) wall of the High Acceptance Di-Electron Spectrometer (HADES). The wall covers an area of around 8 m(2) divided in 6 sectors. In total, 1122 4-gap timing RPC cells are read-out by 2244 time and charge sensitive channels. The FEE chain consists of 2 custom-made boards: a 4-channel Daughter BOard(DBO) and a 32-channel MotherBOard (MBO). The DBO uses a fast 2 GHz amplifier feeding a dual high-speed discriminator. The time and charge information are encoded, respectively, in the leading edge and the width of an LVDS signal. Each MBO houses up to 8 DBOs providing them regulated voltage supply, threshold values via DACs, test signals and, additionally, routing out a signal proportional to the channel multiplicity needed for a 1st level trigger decision. The MBO delivers LVDS signals to a multi-purpose Trigger Readout Board (TRB) for data acquisition. The FEE allows achieving a system resolution around 75 ps fulfilling comfortably the requirements of the HADES upgrade [1]. The commissioning of the whole RPC wall is finished and the 6 sectors are already mounted in their final position in the HADES spectrometer and ready to take data during the beam-times foreseen for 2010.
%K Charge to width algorithm
%K fast amplifying and digitizing electronics
%K front-end electronics
%K HADES
%K time of flight
%K timing RPC
%R 10.1109/TNS.2010.2056928
%U https://doi.org/10.1109/TNS.2010.2056928
%P 2848-2856