A high electric field RFQ device was developed and tested to investigate the design requirements needed for such a device to effectively cool and confine ions in gaseous environments. Segmented cylindrical quadrants placed 1mm apart were used to create axially confining fields similar to present trapping systems. High Q air-cored resonating coils were designed to drive the RFQ device at 4.76 MHz and place up to 5.4 kV between adjacent electrodes in vacuum. By removing the transformer cores from the resonating circuit and using a 1 kW RF amplifier it was found that up to 15 kV of RF potential could be achieved across adjacent quadrants at helium pressures of up to 80 Pa. / The main limiting factor associated to the device's function was found to be the power losses in the transformer coupling the resonant circuit to the RF amplifier. These results show that with a proper RF power supply RFQ confinement of ions severaI hundred times stronger than in present devices is indeed possible.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.78367 |
| Date | January 2002 |
| Creators | Gianfrancesco, Omar |
| Contributors | Moore, Robert B. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Physics.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001982859, proquestno: AAIMQ88202, Theses scanned by UMI/ProQuest. |
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