An experimental proton linear accelerator using a helix structure
| Autor: | D. R. Chick, D. P. R. Petrie, H. Longley, D. G. Keith-Walker, R. Bailey |
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| Rok vydání: | 1961 |
| Předmět: |
Physics
Waveguide (electromagnetism) Proton business.industry Electrical engineering Linear particle accelerator Computational physics Power (physics) law.invention Acceleration Triode law Physics::Accelerator Physics General Earth and Planetary Sciences business Alpha helix General Environmental Science Voltage |
| Zdroj: | Proceedings of the IEE Part C: Monographs. 108:424 |
| ISSN: | 0369-8904 |
| DOI: | 10.1049/pi-c.1961.0057 |
| Popis: | The paper describes the design and construction of a short experimental length of linear accelerator using a helical waveguide as the slow-wave structure to accelerate protons from 2.5 MeV to 4 MeV. Factors influencing the design of the helix structure are considered; these include the maximum voltage between turns which can be tolerated and the available power and frequency of the r.f. supply. The theory of a helix supported on a dielectric tube is given, and from the results the variations of pitch are determined to give the required acceleration. The accelerator was driven by a push-pull triode oscillator operating under 6?s pulsed conditions at 300Mc/s with a peak output of 600 kW. The oscillator and r.f. components are described in detail. The beam-energy spectrum at the output of the accelerator was measured for a variety of working conditions, changes being made in beam-energy input and power and frequency of the r.f. supply. The results obtained confirm the theory and show that with certain restrictions a helix slow-wave structure of the type described provides a convenient me hod of proton acceleration. |
| Databáze: | OpenAIRE |
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