TY  - JOUR
AU  - Belver, D.
AU  - Cabanelas, P.
AU  - Castro, E.
AU  - Garzon, J. A.
AU  - Gil, A.
AU  - Gonzalez-Diaz, D.
AU  - Koenig, W.
AU  - Traxler, M.
PY  - 2010
DA  - 2010//
TI  - Performance of the Low-Jitter High-Gain/Bandwidth Front-End Electronics of the HADES tRPC Wall
T2  - IEEE Trans. Nucl. Sci.
JO  - IEEE Transactions on Nuclear Science
SP  - 2848
EP  - 2856
VL  - 57
IS  - 5
PB  - Ieee-Inst Electrical Electronics Engineers Inc
KW  - Charge to width algorithm
KW  - fast amplifying and digitizing electronics
KW  - front-end electronics
KW  - HADES
KW  - time of flight
KW  - timing RPC
AB  - 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.
SN  - 0018-9499
UR  - https://doi.org/10.1109/TNS.2010.2056928
DO  - 10.1109/TNS.2010.2056928
LA  - English
N1  - ISI:000283440400007
ID  - Belver_etal2010
ER  -