Dr
Eugenio Scapparone
(infn - Bologna)
15/09/2005, 16:25
Oral
The goal of the ALICE Time of Flight detector, based on MRPC technology, is to
perform charged particle identification at |eta|<1. This large area (150 m^2),
finely segmented detector (~160,000 channels), provides fast signals which will
contribute to the L0 and L1 trigger decisions.
Hits from the TOF detector are used to determine the multiplicity and topology
of the events. This...
Mr
Jan de Cuveland
(University of Heidelberg)
15/09/2005, 16:50
Triggering
Oral
The ALICE TRD trigger demands for high-speed computation and low-latency
transmission of event data along the complete data path.
The module presented here is being developed for the detector's global
online tracking unit which contributes to the L1 trigger of the experiment. It is
an FPGA-based system utilizing PCI and 12 fibre-optical SFP transceiver interfaces,
realized as a...
Mrs
Alexandra Oltean
15/09/2005, 17:15
Oral
The electromagnetic Photon Spectrometer (PHOS) of ALICE measures electromagnetic
showers up to 100 GeV with PbWO4 crystals and APD's placed a cold zone of -25 C.
Readout regions of 448 crystals are combined as coherent trigger regions via analog
signals which are processed by one FPGA-based, Trigger Region Unit (TRU). The
signals are 2*2 analog sums with 100 ns shaping time, connected...
Dr
Richard Jacobsson
(CERN)
15/09/2005, 17:40
Oral
The LHC RF clock is transmitted over kilometres of fibre to the experiments
where it is distributed to thousands of front-end electronics boards. In order to
ensure that the detector signals are sampled properly, its long-term stability
with respect to the bunch arrival times must be monitored with a precision of
<100ps. In addition it is important to monitor the LHC bunch structure...
