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Showing 1 to 19 of 19 for “"transition radiation"”.
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Phase-transition radiation of water
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2011-11-20T20:09:30Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Wang_Kuo-Ting.pdf: 1950213 bytes, checksum: efdbf4d6028389ef1af8e53e5e68a050 (MD5)
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Temperature effect of phase transition radiation of water
Phase transition radiation of water revealed in the past provides a possible idea to modify weather predictions nowadays into more accurate ones. With existence, characteristic wavelength, and mechanisms of this phase transition radiation presenting by scientists and engineers, temperature effect …
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Calibrating and recommissioning the ALICE transition radiation detector
… systems at CERN, core software for the ALICE Transition Radiation Detector was updated and migrated to a new version control system. Pipelines were also developed to automatically deploy packages to remote repositories. Secondly, drift velocity and $E times B$ calibration software was …
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A transition radiation detector and gas supply system for AMS
… protons is planned for this signal. A TRD (Transition Radiation Detector) has been designed to achieve these physics goals. Besides the radiator, the TRD is a gaseous detector that needs a gas system providing signal stability to 3%. The design, and construction of the TRD gas supply system …
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Designing an event display for the Transition Radiation Detector in ALICE
… design study for an event display focused on the Transition Radiation Detector (TRD) within A Large Ion Collider Experiment (ALICE) at the European Organisation for Nuclear Research (CERN). Reviews of the fields of particle physics and visualisation are presented to motivate formally designing …
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Common Mode Effect of the ALICE Transition Radiation Detector - Baseline Shift
The Transition Radiation Detector is a sub-detector of the ALICE experiment that is used primarily as an electron detector and a trigger mechanism. The TRD currently has 521 individual chambers distributed over 18 super modules. Each chamber houses a radiator, a drift region and a multi-wire …
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Local Signal Processing of the ALICE Transition Radiation Detector at LHC (CERN)
The transition radiation detector of the heavy ion experiment ALICE at LHC (CERN) integrates parts of the data acquisition and trigger system. Therefore, a multi chip module has been developped which incorporates two microchips. Detector signals are preamplified and shaped (Preamplifier and Shaper …
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The final 20 layer prototype for the AMS transition radiation detector : beamtests, data analysis, MC-studies
… additional supplements to generate and detect transition radiation, first implemented by members of the HERA-B Collaboration, were used to reproduce the beamtest results. The detector characteristics, like the geometry and part of the readout electronics, as well as the beamtest conditions, …
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Performance of a photon conversion trigger in proton-proton collisions using the ALICE Transition Radiation Detector
The study aimed to find the yield of conversion photons in pp √ s = 13 TeV with less uncertainty for high transverse momentum photons through the TRD in ALICE (necessary for π 0 and η cross-sections). The calculation of the yield of conversion photons were successful in replicating their yield from …
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Space qualification of the transition radiation detector of the AMS-02 experiment and indirect search for dark matter
… and the dark matter halo profile. The AMS-02 Transition Radiation Detector (TRD) is designed to provide a positron separation from the proton background with high efficiency in the momentum range of 1 GeV/c upto $leq$ 300 GeV/c. It consists of 20 layers of straw module, proportional counters …
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Machine learning for particle identification & deep generative models towards fast simulations for the Alice Transition Radiation Detector at CERN
… with the ALICE (A Large Ion Collider Experiment) Transition Radiation Detector (TRD), within the Large Hadron Collider (LHC) at CERN (The European Organization for Nuclear Research).
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Development of the Readout Chamber of the ALICE Transition Radiation Detector and Evaluation of its Physics Performance in the Quarkonium Sector
… adoption of an electron-pion separator, like the Transition Radiation Detector (TRD), is of particular importance. This thesis went along with the first real dimension TRD prototype from the first theoretical considerations of its readout chamber over testing it for its mechanical and …
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Towards a precise measurement of the cosmic-ray positron fraction
… by silicon photomultipliers. The second one is a transition radiation detector (TRD) similar to the one built for AMS-02, made of an irregular fleece radiator followed by thin-walled detection tubes. A detailed Monte Carlo simulation of PEBS, based on Geant4,was created to study the expected …
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Machine learning approaches towards tuning ALICE TRD simulations
… real and simulated data pertaining to the ALICE Transition Radiation Detector is carried out as a motivation to tune the necessary parameters in the ALICE Online-Offline simulation software (O2 ). After such exploration a single parameter namely the Xe gas gain is subjected to modification. A …
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Ultra-fast photon and electron beam diagnostics for free electron lasers
… electron bunches, both by probing the near-field transition radiation and by directly sensing the Coulomb field of the electron bunches.<br/><br/>Although the techniques described are not truly single-shot - requiring measurements averaged over a period of a few microseconds - ways in which they …
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Search for cosmic-ray antiparticles with bolloon-borne and space-borne experiments
… an altitude of 40km. The detector consists of a transition radiation detector, a time of flight system, a combined silicon and scintillating fiber tracker and an electromagnetic calorimeter. All detectors are placed in a superconducting magnet which creates a field of 0.8T. Several flights are …
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Entwicklung und Bau eines auf Proportionalkammern basierenden Übergangsstrahlungsdetektors für das AMS-02-Weltraumexperiment
… 1000 up to particle energies of 300 GeV from the Transition Radiation Detector (TRD), which is under construction at RWTH Aachen. The design for safe and reliable operation in space consists of 20 layers, each with 20 mm fleece-radiator and modules of 16 straw tubes (diameter: 6 mm) with a total …
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Electro-Optic Diagnostic Techniques For The CLIC Linear Collider
… are compared with measurements by coherent transition radiation on a streak camera. The measurement on bunch charge dependence is studied. Timing resolution of the bunch profile monitor is studied in both theory and numerical calculation. <br/><br/>This thesis summarises a frequency analysis …
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Electron Beam Diagnostic at the ELBE Free Electron Laser
The radiation source ELBE is a scientific user facility able to generate electromagnetic radiation as well as beams of secondary particles. The figure below shows the layout of the facility. ELBE is based on a superconducting electron linac. The linac consists of two accelerating modules and uses …