Physics

Magnetic Field Characterisation of a Bitter Magnet Undulator (2006) - Report

Magnetic Field Characterisation of a Bitter Magnet Undulator (2006) - Presentation

Abstract: An analysis of prospective undulating magnetic fields was performed. The magnetic profile of a non-undulating Bitter magnet (peak 0.37T ± 0.04T) and an undulating helical wire magnet (peak 0.14T ± 0.03T) were investigated using search (induction) coils and a Hall probe. Both magnets were charged with a 0.53kV potential in trials. A strong linearity was observed between charging voltage and magnetic field strength in the helical magnet up to 1kV. An attempt was made at producing an undulating Bitter magnet; however the design failed to produce an undulating field. A more durable variation on the helical magnet was determined an appropriate undulator.

Solar Radiation (2005)

Abstract: Solar radiation is scattered and absorbed in different ways and in different layers of the atmosphere. Solar flux sensors were used to confirm the optical depth, u of clear skies to be 0 < u < 1 and the optical depth of heavier cloudy skies to be 1 < u < 2. The flux measured off different surfaces (grass, concrete and water) confirmed that rural albedo measurements are much larger than that measured off urban surfaces.