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AbstractAbstract
[en] In the framework of this thesis the intense low energy ion beam transport was investigated. Especially, the beam transport in toroidal magnetic field configurations was discussed, as it may allow the accumulation of high intensive beams in the future. One of the specific tasks is to design an injection system that can be used for the proposed low energy accumulator ring. A simulation code (TBT) was written to describe the particle motion in curved segments. Particle in Cell techniques were utilized to simulate a multi particle dynamics. A possibility of reading an external data file was made available so that a measured distribution can be used to compare simulation results with measured ones. A second order cloud in cell method was used to calculate charge density and in turn to solve Poisson's equation. Further simulations were performed to study the self field effects on beam transport. Experiments were performed to compare the simulation results and gain practical experience. The preparatory experiments consisted of building and characterization of the ion source in a first step. Along with the momentum spectrometer and emittance scanner the beam properties were studied. Low mass ion beams He+ and mixed p, H2+, H3+ beams were analyzed. In the second stage, beams were transported through a solenoid and the phase space distribution was measured as a function of the magnetic field for different beam energies. The phase-space as distributions measured in a first stage were simulated backward and then again forward transported through the solenoid. The simulated results were then compared with the measured distribution. The LINTRA transport program was used. The phase-space distribution was further simulated for transport experiments in a toroidal magnetic field. The transport program that was used to simulate the beam in the toroid was also used to design the injection system. The injection system with its special field configurations was designed to perform experiments with room temperature segments. (orig.)
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Source
25 Aug 2009; 133 p; Diss. (Dr.rer.nat.)
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
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BEAM DYNAMICS, BEAM TRANSPORT, CHARGE DENSITY, COMPUTERIZED SIMULATION, CROSSED FIELDS, ELECTRIC FIELDS, ION BEAM INJECTION, ION BEAMS, MAGNETIC FIELDS, MILLI AMP BEAM CURRENTS, NUMERICAL SOLUTION, POISSON EQUATION, PROTON BEAMS, SELF-CONSISTENT FIELD, SPATIAL DISTRIBUTION, STORAGE RINGS, T CODES, TEMPERATURE RANGE 0273-0400 K, TOROIDAL CONFIGURATION
ANNULAR SPACE, BEAM CURRENTS, BEAM INJECTION, BEAMS, CLOSED CONFIGURATIONS, COMPUTER CODES, CONFIGURATION, CURRENTS, DIFFERENTIAL EQUATIONS, DISTRIBUTION, DYNAMICS, EQUATIONS, MAGNETIC FIELD CONFIGURATIONS, MATHEMATICAL SOLUTIONS, MECHANICS, NUCLEON BEAMS, PARTIAL DIFFERENTIAL EQUATIONS, PARTICLE BEAMS, SIMULATION, SPACE, TEMPERATURE RANGE
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