| Paper |
Title |
Other Keywords |
Page |
| TUPPT005 |
Temperature Stability of the TRIUMF Cyclotron RF Controls |
controls, cyclotron, TRIUMF, monitoring |
162 |
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- M.P. Laverty, K. Fong, Q. Zheng
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
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Factors which contribute to ambient temperature sensitivity in the TRIUMF cyclotron RF control system are examined and characterized. Seasonal temperature variations together with air conditioning system limitations can give rise to unwanted temperature variations in the rack space housing the control system. If these are large enough, they can cause excursions in the cyclotron accelerating voltage. The critical components responsible are characterized and some possible remedies outlined.
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| TUPPT011 |
Measurement of Turn Structure in the Central Region of TRIUMF Cyclotron |
resonance, cyclotron, TRIUMF, extraction |
177 |
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- T. Planche, R.A. Baartman, Y.-N. Rao
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
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To get the most out of the existing beam diagnostics in the TRIUMF cyclotron, we started in 2011 to developed new data processing and visualization tools. The main advantage of these Matlab-based tools, compared to old VMS-based tools, is that they can benefit from a much larger library of modern data processing and visualization algorithms. This effort has already shown itself very useful to highlight essential features of the beam dynamics which remained unnoticed before. In this paper we present measurements results displaying beam dynamics process, and in particular space charge related process, happening in the central region of the TRIUMF cyclotron.
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Poster TUPPT011 [32.212 MB]
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| TUPPT026 |
The Design and Testing of an Automatic RF Conditioning System for the Compact Medical Cyclotron |
multipactoring, cyclotron, controls, vacuum |
209 |
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- Y. Lei, B. Ji, P.Z. Li, C. Wang, J.Y. Wei, Z.G. Yin, T.J. Zhang
CIAE, Beijing, People's Republic of China
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The multipacting phenomenon for a compact medical cyclotron is induced by the fringing magnet field inside the accelerating structure. And it will become more interesting, when the vacuum system is equipped with diffusion pump. A method used for CYCIAE-14 cavity conditioning is reported together with the testing results of an automatic conditioning circuit designed on such basis. Apart from traditional Low Level RF control, in which close-loop regulation plays an important role, the automatic conditioning system emphasizes on the cavity startup process. It takes advantage of the modern digital signal processing technique, combined with the direct digital synthesizer to accurately limit the reflection, will condition the cavity by means of sweeping frequency, using the low RF driven power, in continuous wave mode. The electronics are designed and tested first; it will be used later in the RF system commissioning of other compact medical cyclotrons built by BRIF division of CIAE.
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| TUPSH012 |
The Development of High Stability Magnet Power Supply |
controls, power-supply, EPICS, high-voltage |
245 |
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- K.-H. Park, H.S. Han, Y.-G. Jung, D.E. Kim, S.-C. Kim, H.-G. Lee, H.S. Suh
PAL, Pohang, Kyungbuk, Republic of Korea
- J.-S. Chai, Y.S. Lee
SKKU, Suwon, Republic of Korea
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This paper presents the magnet power supply (MPS) for the beam correction magnet. The required current to energize the magnet was ±20 A. The MPS has been implemented using the digital signal processing technology and shows the high stability and other good responses. The stability of the MPS was about ~10 ppm in short and long term, respectively. Various experimental results such as stability, bandwidth and simulation are given in this paper
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