0000000000398455

AUTHOR

Salvator Roberto Amendolia

showing 3 related works from this author

STUDIES OF WIRE GAIN AND TRACK DISTORTION NEAR THE SECTOR EDGES OF THE ALEPH TIME PROJECTION CHAMBER

1986

Abstract The materials used to hold the wires at the sector edges in a large Time Projection Chamber (TPC) inrtoduce distortions of the electric drift field near those edges. These distortions degrade tracking information and sometimes cause large changes in wire gain near the edge. We have studied these two problems for the ALEPH TPC and have found that both can be greatly reduced by the addition of two field correction strips held at appropriate voltages.

PhysicsNuclear and High Energy PhysicsTime projection chamberField (physics)business.industryTrack (disk drive)STRIPSEdge (geometry)Tracking (particle physics)law.inventionOpticslawDistortionbusinessInstrumentationVoltage
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Management and Control of the Read Out Processors (tpps) of the Aleph Time Projection Chamber

1989

The readout of the Aleph time projection chamber (TPC) relies on a set of 72 time projection processors (TPPs), which are based on a Motorola 68020 microprocessor running a real-time operating system. The advanced processing capabilities of the TPPs allow them to perform in parallel a number of tasks, both during and outside of data acquisition, which are outlined. The management and control of such a large number of intelligent devices is presented. The discussion covers the hardware configuration of the TPPs; the software running the TPPs; their management, status, and control; exception handling and message logging; and the TPP monitoring tasks. >

Nuclear and High Energy PhysicsAlephTime projection chamberComputer sciencebusiness.industryException handlingElectrical engineeringlaw.inventionSet (abstract data type)MicroprocessorData acquisitionSoftwareNuclear Energy and EngineeringlawElectrical and Electronic EngineeringProjection (set theory)businessComputer hardware
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THE FASTBUS READ-OUT SYSTEM FOR THE ALEPH TIME PROJECTION CHAMBER

1989

The readout system for the Aleph central tracking detector, a large time projection chamber (TPC), consists of more than 100 FASTBUS crates with approximately 1000 FASTBUS modules. The detector and its associated electronics are briefly presented, followed by a more detailed description of the readout and control system. The discussion covers the sector readout, electronics calibration, front-end data acquisition, data pipelining, and service request handling. Experiences with the system are discussed. >

PhysicsNuclear and High Energy PhysicsAlephTime projection chamberPhysics::Instrumentation and Detectorsbusiness.industryDetectorAstrophysics::Instrumentation and Methods for AstrophysicsTracking (particle physics)Data acquisitionNuclear Energy and EngineeringNuclear electronicsControl systemElectronic engineeringElectronicsElectrical and Electronic EngineeringbusinessComputer hardware
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