Speaker
Description
The buildup of electron clouds (EC) within the beam chamber limits machine performance by causing heating, beam instabilities, and other undesirable effects. Macroparticle simulations show that EC density can be modelled as a smooth curve with superimposed oscillations of a frequency corresponding to the beam bunch spacing. The saturation density and rate of electron cloud buildup can be linked to the best-fit parameters of the mathematical model chosen for the smooth curve. Our work investigates the dependence of each curve parameter on the simulation parameters, looking to reduce the number of simulations necessary to gain a complete picture of EC buildup per machine configuration. Correlations among the parameters can be utilized to formulate predictions using fewer data points.
Funding Agency
This work was performed under the auspices of, and with support from, the Swiss Accelerator Research and Technology (CHART) program (www.chart.ch).
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