| Paper |
Title |
Page |
| WEO4LR03 |
Noise and Entropy in Non-Equipartitioned Particle Beams |
309 |
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- I. Hofmann, O. Boine-Frankenheim
GSI, Darmstadt, Germany
- O. Boine-Frankenheim
TEMF, TU Darmstadt, Darmstadt, Germany
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The numerical noise generated in particle-in-cell simulation of 3D high intensity bunched beams is studied with the TRACEWIN code and compared with the analytical entropy model by Struckmeier. In this model the logarithm of the six-dimensional rms emittance is shown to qualify as rms-based entropy. We confirm the dependence of this growth on the bunch temperature anisotropy as predicted by Struckmeier, but also find modifications not predicted by theory. Our findings are applicable in particular to high current linac simulation, where they can help to estimate noise effects and find an effective balance between the number of simulation particles and the grid resolution. In principle, they can also be generalized to bunches in circular machines.
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Slides WEO4LR03 [2.946 MB]
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| FRO1AU02 |
WG B- Beam Dynamics in High Intensity Linacs |
446 |
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- D. Raparia
BNL, Upton, Long Island, New York, USA
- Y. He
IMP, Lanzhou, People's Republic of China
- I. Hofmann
GSI, Darmstadt, Germany
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Summary of Working Group B
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