11th Workshop on Electronics for LHC and future Experiments

Session

Parallel session B6

B6

15 Sept 2005, 16:25

Heidelberg

50. A multiplicity trigger based on the Time of Flight detector for the ALICE experiment

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...

54. ALICE TRD Track Matching Unit with 12 Multi-Gigabit Inputs

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...

74. Trigger Region Unit for the Alice PHOS calorimeter

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...

78. Beam Phase and Intensity Monitor for the LHCb experiment

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...