@Article{Belver_etal2010,
author="Belver, D.
and Cabanelas, P.
and Castro, E.
and Garzon, J. A.
and Gil, A.
and Gonzalez-Diaz, D.
and Koenig, W.
and Traxler, M.",
title="Performance of the Low-Jitter High-Gain/Bandwidth Front-End Electronics of the HADES tRPC Wall",
journal="IEEE Transactions on Nuclear Science",
year="2010",
publisher="Ieee-Inst Electrical Electronics Engineers Inc",
volume="57",
number="5",
pages="2848--2856",
optkeywords="Charge to width algorithm; fast amplifying and digitizing electronics; front-end electronics; HADES; time of flight; timing RPC",
abstract="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.",
optnote="ISI:000283440400007",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=349), last updated on Thu, 24 Mar 2011 11:57:59 +0000",
issn="0018-9499",
doi="10.1109/TNS.2010.2056928",
opturl="https://doi.org/10.1109/TNS.2010.2056928",
language="English"
}