Speaker
Ganesh Jagannath Tambave
(University of Bergen (NO))
Description
ALICE experiment at the LHC studies high-energy heavy-ion collisions (Pb-Pb) to characterize the
strongly interacting matter at extreme energy densities. After the long shutdown of LHC in 2018,
RUN3 of ALICE experiment is planned where the Pb-Pb collision rate of 50 kHz is expected. To cope
with this high collision rate, the present Multi-Wire Proportional Chamber based TPC will be replaced
with the high rate capable Gas Electron Multiplier (GEM) based TPC and continuous readout system
will replace the conventional triggered readout.
In the continuous TPC readout, the current signals from the GEM detector pads will be processed using
the Front-End Cards (FECs). In the FECs, five custom-made SAMPA ASICs, will process the data
from its 160 readout channels (32 channels/each). The SAMPA contains most of the Front-End
Electronics such as charge-sensitive preamplifier, shaper, 10 bit 10 MHz digitizer and digital signal
processing part. The data from the SAMPA will then be multiplexed and transmitted using GigaBit
Transceiver (GBT) via optical links to a Common Readout Unit (CRU). The CRU is an interface to the
on-line farm, trigger and detector control system. The first version of the SAMPA chip (MPW1) has
been produced in 2014. In the presentation, the performance test results of MPW1 with the GEM
detector prototype (10 x 10 cm²) will be reported.
| On behalf of collaboration: | ALICE |
|---|
Primary author
Ganesh Jagannath Tambave
(University of Bergen (NO))
