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Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression
Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression
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机译:在束长度压缩过程中控制相干同步辐射驱动的光束质量下降的方法
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摘要
A method of avoiding CSR induced beam quality defects in free electron laser operation by a) controlling the rate of compression and b) using a novel means of integrating the compression with the remainder of the transport system: both are accomplished by means of dispersion modulation. A large dispersion is created in the penultimate dipole magnet of the compression region leading to rapid compression; this large dispersion is demagnified and dispersion suppression performed in a final small dipole. As a result, the bunch is short for only a small angular extent of the transport, and the resulting CSR excitation is small.
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