A new method of modeling the working mode of the multipurpose isochronous cyclotron |
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Authors: | I N Kiyan |
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Institution: | 1.Joint Institute for Nuclear Research,Dubna,Russia |
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Abstract: | The method of modeling the working mode is based on the selection of currents in concentric trim coils of the multipurpose isochronous cyclotron for the formation of the required magnetic field at a certain level of the main coil current. The traditional method of selecting currents is based on finding the solution for all concentric trim coils simultaneously. As a rule, after setting the calculated working mode, it is necessary to perform control measurement of the magnetic field and repeat the calculation to obtain the desired working mode. The new method of selecting currents is based on finding the solution for each separate concentric trim coil. The concentric trim coils are taken in turn in a specified order. A number of experiments on handling the proton beam in the range of working acceleration radii with an output energy between 45 and 60 MeV, performed using the multipurpose isochronous cyclotron AIC144 at the Institute of Nuclear Physics of the Polish Academy of Sciences in Krakov showed that the new method of obtaining the desired working mode does not require control measurements of magnetic fields, which testifies the high accuracy of the calculation. |
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