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| Bachelor Thesis | GSI-2024-00530 |
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2024
Forschungszentrum Jülich
Jülich
Abstract: The Engels polarization method, invented in September 2022 by Dr. R. Engels,offers an easy and reliable way to produce hyperpolarization in particle beams, e.g.,hydrogen, deuterium, $^3He^+$, etc.. This method draws inspiration from the Sonamethod proposed by P. G. Sona in 1967. It consists of two opposing magnetic fieldsto alter the total angular projection of pure states in hydrogen-like atoms. In thecase of the Engels method, the longitudinal magnetic field forms a sinusoidal, whichprovides a quantization axis and a zero crossing for the spin. Generating this fieldrequires two solenoids with mirrored currents, which must be placed in front ofeach other. Ramping their magnetic field leads to oscillations in the photomultipliersignal. These oscillations correlate to a change in the occupation numbers of theZeeman states and have been the subject of investigation at the Institute for NuclearPhysics (IKP) at the Research Center Jülich (FZJ) for the past few years. Theyare caused by transitions between the hyperfine sub-states related to the radialmagnetic field oscillations of the unit. This magnetic field component is proportionalto the radial distance from the symmetry axis of the coils and the derivative ofthe longitudinal component. In order to study the effects of this orthogonal fieldcomponent, a new transition device has been proposed. The new device needs tohave a proper sinusoidal waveform, so two coil pairs with opposite currents will beused. The offset for each coil to the beam pipe, as well as the relative distancebetween the coil pairs, can be changed in the new device. Details regarding thedevice’s operation and the methods for constructing a transverse transition unit areprovided in this thesis, along with simulated data to approximate its behavior.
Note: Bachelorarbeit, Fachhochschule Aachen, 2024
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Appears in the scientific report 2024
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