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Thesis

An Off-Axis Electron Gun for a Compact Electron Beam Ion Trap

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Bücking,  Thore Mainart
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society,;

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Citation

Bücking, T. M. (2013). An Off-Axis Electron Gun for a Compact Electron Beam Ion Trap. Master Thesis, Imperial College, Blackett Laboratory, London, UK.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-F885-7
Abstract
An Electron Beam Ion Trap (EBIT) called table-top EBIT (ttEBIT) was completed and put into operation within the context of this work. The ttEBIT uses permanent magnets to produce a peak magnetic field of about 0:7 T. Its small size facilitates its use as a diagnostic tool in laser spectroscopy as well as its utilisation with free-electron lasers and synchrotronstrahlung. A mounting for an electron gun, an electron collector, as well as other components were designed and installed. Thus the first commissioning of the apparatus and characterisation of the electron beam was achieved. Furthermore, a novel off-axis electron gun was developed, which allows for a coaxial merging of a photon beam and the electron beam. The design was tested using simulation software and promises good control over the beam characteristics. This was achieved among other measures by placing sagittal and meridional cuts on the electrodes, which allows for the steering of the electron beam into the desired direction.