Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2007. / Particle accelerators today have numerous magnets that require controlling. These include
magnets for analysing, beam-path selection, focusing, etc. Also, design specifications are
becoming tighter. A typical modern magnet power supply is expected to have a resolution
of 16-bit and a stability of 10 ppm.
This thesis addresses two research areas. First, various aspects of high-performance
accelerator magnet power supplies are investigated. An isolated dual-stage 3.5 kW converter
is designed. The concept is verified through practical measurements. The control system
and high-resolution pulse-width modulation are implemented within a field-programmable
gate array.
Second, a nuclear-magnetic resonance probe is designed and simulated. It is intended to
provide a measurement of field-strength for feed-back purposes. Some adjustments are made
with existing technology in order to decrease the time between successive measurements to
the order of 10 μs.
Also, the support systems (central processing unit, hardware drivers, etc.) are designed,
implemented in the field-programmable gate array and tested successfully.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/2308 |
| Date | 03 1900 |
| Creators | Taylor, John-Philip |
| Contributors | Mouton, H. du T., Jones, T., Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 13490843 bytes, application/pdf |
| Rights | Stellenbosch University |
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