Search results for "KAOS"

showing 5 items of 5 documents

Vēsture: Latvijas Universitātes Žurnāls, 2018, Nr.6

2019

Aleksandrs Gavriļins (15.07.1953.–20.06.2019.) - Nekrologs“Senlatvijas” vardarbīga pakļaušana krusta kaos - mīts“monarhisma” mīts Latvijas Republikā (1920-1940)Eiropas un Amerikas Savienoto Valstu jauno laiku vēstureĒvalds Mugurēvičs (06.04.1931.–23.11.2018.) - NekrologsRīgas kinostudijas spēlfilmaslatviešu jūrlietu vēstures izpēte“Sarkanie” partizāni (Kurzeme) 1919–1920Latvijas zemessardzes rotu dumpis (1918)Kultūras un mākslas sovjetizācija - Latvija (1940-1941)Recenzijas:HUMANITIES and RELIGION::History and philosophy subjects::History subjects::History [Research Subject Categories]Bermonta karaspēka uzbrukuma pirmās dienas Rīgā 1919. gada 8.-11. oktobris - vēstures avotiLatvijas preses korespondenti - Spānijas pilsoņu karš1905. gada revolūcija (Liepāja)Nekrologi
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Future use of silicon photomultipliers for Kaos at MAMI and P¯ANDA at FAIR

2009

A characterisation of scintillating fibres with silicon photomultiplier read-out was performed in view of their possible application in fibre tracking detector systems. Such a concept is being considered for the Kaos spectrometer at the Mainz Microtron MAMI and as a time-of-flight start detector for the hypernuclear physics programme at the PANDA experiment of the FAIR project. Results on particle detection effciency and time resolution are discussed. In summary, the silicon devices are very suitable for the detection of the low light yield from scintillating fibres insofar a trigger scheme is found to cope with the noise rate characteristics.

Fibre trackingPhysicsNuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsSiliconSpectrometerPhysics::Instrumentation and Detectorsbusiness.industryDetectorFOS: Physical scienceschemistry.chemical_elementTime resolutionInstrumentation and Detectors (physics.ins-det)OpticsSilicon photomultiplierchemistryNuclear Experiment (nucl-ex)KAOSNuclear ExperimentbusinessNuclear ExperimentInstrumentationMicrotronNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Prospects for hypernuclear physics at Mainz: From KAOS@MAMI to PANDA@FAIR

2013

Abstract At the Mainz Microtron hypernuclei are produced by ( e , e ′ K ) reactions. A dedicated kaon spectrometer located at 0° with respect to the electron beam is used to detect kaons emitted in forward direction thus tagging events involving strangeness production. By measuring the momenta of pions from two body weak decays using high resolution magnetic spectrometers one gains direct access to the ground state masses of the produced hyperfragments. At FAIR the PANDA Collaboration intends to produce double-hypernuclei by numbers with an antiproton beam and study their high resolution γ -spectroscopy thus providing for the first time precise information on the level structure of these nu…

PhysicsNuclear and High Energy PhysicsParticle physicsSpectrometerNuclear TheoryStrangeness productionHypernucleusNuclear physicsPionAntiproton beamhypernuclei; weak decay; spectroscopyKAOSGround stateNuclear ExperimentMicrotron
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Front-End Electronics for the KAOS Spectrometer at MAMI

2009

A new front-end electronics system has been developed for the electron arm tracking detectors in the Kaos spectrometer at the Mainz microtron MAMI. The signals of multi-anode photomultipliers are collected by 96-channel front-end boards, digitized by double-threshold discriminators and the signal time is picked up by F1 TDC chips. The system was designed to process more than 4,000 channels and to cope with the high electron flux in the spectrometer and the high count rate requirement of the detectors. A subset of 288 channels was installed and successfully used in the 2008 data taking period of the Kaos spectrometer.

PhysicsNuclear and High Energy PhysicsPhotomultiplierSpectrometerbusiness.industryDetectorElectrical engineeringTracking (particle physics)Signaldouble-threshold discriminator; front-end electronics; multi-anode photomultiplier; microtronNuclear Energy and EngineeringNuclear electronicsElectrical and Electronic EngineeringKAOSbusinessMicrotronIEEE Transactions on Nuclear Science
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Kaon Tagging at 0° Scattering Angle for High-Resolution Decay-Pion Spectroscopy

2014

At the Mainz Microtron hypernuclei can be studied by (e,e'K) reactions. By detecting the kaon which is emitted in forward direction, with the KAOS spectrometer placed at 0 scattering angle, reactions involving open strangeness production are tagged. High-resolution magnetic spectrometers are then used to coincidentally detect the mono- energetic decay-pions from mesonic two-body weak decays of light hypernuclei at rest. As a pioneering experiment has confirmed, the KAOS spectrometer is exposed to a large flux of background particles, mostly positrons from bremsstrahlung pair production. In order to increase the e ciency of kaon identification the KAOS spectrometer was modi- fied to suppress…

PhysicsParticle physicsSpectrometerScatteringPhysicsQC1-999Nuclear TheoryBremsstrahlungStrangeness productionNuclear physicsMomentumPionPair productionElectron Scattering; Hypernuclei; MAMI; KAOS; Decay-Pion SpectroscopyHigh Energy Physics::ExperimentNuclear ExperimentMicrotronEPJ Web of Conferences
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