Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · 1996 · 10 citations · 14 references
Natural SciencesNuclear EngineeringPhysicsNuclear PhysicsParticle PhysicsSpectroscopyAccelerator PhysicsCollider PhysicsDetector SystemsHeavy-ion PhysicsParticle DetectorsRadiation SpectroscopyDetector ConstructionElectron-positron CollisionsPositron Annihilation SpectroscopyRelativistic Heavy-ion CollisionsSolenoid Magnetic FieldSpectrometer Design
A new solenoidal spectrometer, designed to study the production mechanism of electrons and positrons in heavy-ion collisions, has been constructed at Argonne National Laboratory. The spectrometer uses a 300 G magnetic field to transport the leptons to two highly segmented silicon arrays that are centered on the solenoid axis, 1.2 m from the target. Positrons are identified by detecting their annihilation radiation with two arrays of position sensitive NaI(Tl) crystals that surround the silicon arrays. A novel design feature of the spectrometer is the ability to measure the angles of emission of the leptons relative to the solenoid axis. The measured response of the apparatus to electrons and positrons is in very good agreement with the calculated response obtained from Monte Carlo simulations.
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Observation of a Peak Structure in Positron Spectra from U+Cm Collisions
J.E. Schweppe, A. Gruppe, H. Bokemeyer et al. · Physical Review Letters · 1983 · 329 citations
Anomalous Positron Peaks from Supercritical Collision Systems
T. E. Cowan, H. Backe, Marianne H. Begemann et al. · Physical Review Letters · 1985 · 298 citations
Narrow positron lines from U-U and U-Th collisions
M. Clemente, E. Berdermann, P. Kienle et al. · Physics Letters B · 1984 · 268 citations