Search results for "Fast Interaction Trigger"

showing 4 items of 4 documents

ALICE forward rapidity upgrades

2017

Two forward rapidity upgrades of the ALICE apparatus at the LHC are presented: the Muon Forward Tracker (MFT) and the Fast Interaction Trigger (FIT). Their designs are driven by physics performance studies, which have been done using MC simulations. Several prototypes have been tested. Currently the detector design phase has ended. The final layouts, geometries and expected performance figures are presented. The latest developments from the test of the prototypes are discussed. The MFT will improve the performance of the ALICE Muon Spectrometer by adding vertexing capabilities to the system. The elementary component of the MFT is a Monolithic Active Pixel Sensor (MAPS), using the TowerJazz …

CMOS sensorLarge Hadron ColliderMuon Forward TrackerInteraction pointta114Computer sciencebusiness.industryCherenkov detectorFast Interaction TriggerPhysics::Instrumentation and DetectorsMonte Carlo methodDetectorALICE apparatuslaw.inventionOpticslawMicrochannel plate detectorDetectors and Experimental TechniquesbusinessCherenkov radiation
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New Fast Interaction Trigger for ALICE

2017

The LHC heavy-ion luminosity and collision rate from 2021 onwards will considerably exceed the design parameters of the present ALICE forward trigger detectors and the introduction of the Muon Forward Tracker (MFT) will significantly reduce the space available for the new trigger detectors. To comply with these conditions a new Fast Interaction Trigger (FIT) will be built. FIT will be the main forward trigger, luminometer, and interaction-time detector. It will also determine multiplicity, centrality, and reaction plane of heavy-ion collisions. FIT will consist of two arrays of Cherenkov quartz radiators with MCP-PMT sensors and of a plastic scintillator ring. By increasing the overall acce…

Nuclear and High Energy PhysicsPhysics::Instrumentation and DetectorsFast Interaction TriggerScintillatorALICE upgrade01 natural sciencesPLANACON XP85012Nuclear physics0103 physical sciencesRedundancy (engineering)MCP-PMT010306 general physicsInstrumentationCherenkov radiationCollision ratePhysicsLarge Hadron ColliderMuonta114010308 nuclear & particles physicsbusiness.industryDetectorElectrical engineeringbusinessCentralityHL-LHCdetector R&DNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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New ALICE detectors for Run 3 and 4 at the CERN LHC

2020

Abstract Run 3 at the CERN LHC is scheduled to start in March 2021. In preparation for this new data taking period the ALICE experiment is making major modifications to its subsystems and is introducing three new detectors: the new Inner Tracking System, the Muon Forward Tracker, and the Fast Interaction Trigger. The new detectors will enhance tracking, especially at low transverse momenta, improve vertexing, provide the required triggering, fast timing, luminosity, and forward multiplicity functionality. For instance, it will be possible to measure beauty from displaced J/ ψ vertices down to transverse momenta p T ∼ 0 and improve precision for the ψ (2S) measurements. The upgraded ALICE wi…

PhysicsNuclear and High Energy PhysicsParticle physicsMuonLuminosity (scattering theory)Large Hadron Colliderbusiness.industryPhysics::Instrumentation and DetectorsDetectortutkimuslaitteetMultiplicity (mathematics)Tracking systemhiukkasfysiikkaTracking (particle physics)ALICE upgradeinner tracking systemmuon forward trackerALICE (propellant)businessInstrumentationHL-LHCfast interaction trigger
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Performance of the cost-effective Planacon ® MCP-PMTs in strong magnetic fields

2020

We present the behavior of the cost-effective Planacon MCP-PMTs with pore diameter in the presence of axial magnetic fields up to 0.5 T. Having a batch of 62 devices of the same type, two MCP-PMTs were selected and their gain variation measured in different magnetic fields. These two otherwise identical devices satisfied the selection criteria by requiring the lowest (1.15 kV) and one of the highest (1.4 kV) bias voltage values to achieve a given gain. Both MCP-PMTs have a nearly identical tolerance of the strong magnetic field despite the significant difference in the bias voltage. This clarifies the mechanism of the B-field influence on the MCP-PMT gain, emphasizing the importance of the …

ilmaisimetPIDtutkimuslaitteetMCP-PMTmagnetic fieldhiukkasfysiikkamagneettikentätmicrochannel platefast interaction trigger
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