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CEBAF upgrade bunch length measurements.

机译:CEBAF升级束长测量。

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摘要

Many accelerators use short electron bunches and measuring the bunch length is important for efficient operations. CEBAF needs a suitable bunch length because bunches that are too long will result in beam interruption to the halls due to excessive energy spread and beam loss. In this work, bunch length is measured by invasive and non-invasive techniques at different beam energies. Two new measurement techniques have been commissioned; a harmonic cavity showed good results compared to expectations from simulation, and a real time interferometer is commissioned and first checkouts were performed. Three other techniques were used for measurements and comparison purposes without modifying the old procedures. Two of them can be used when the beam is not compressed longitudinally while the other one, the synchrotron light monitor, can be used with compressed or uncompressed beam.
机译:许多加速器使用短的电子束,测量束的长度对于有效运行很重要。 CEBAF需要合适的束长度,因为束太长会由于过度的能量扩散和束流损失而导致对大厅的束流中断。在这项工作中,束长是通过有创和无创技术在不同的束能量下测量的。两种新的测量技术已经投入使用;与仿真期望值相比,谐波谐振腔显示出良好的结果,并且调试了实时干涉仪并进行了首次检出。在不修改旧程序的情况下,使用了其他三种技术进行测量和比较。当光束没有被纵向压缩时,可以使用其中两个,而同步加速器光监控器中的另一个可以用于压缩或未压缩的光束。

著录项

  • 作者

    Ahmad, Mahmoud Mohamad Ali.;

  • 作者单位

    Old Dominion University.;

  • 授予单位 Old Dominion University.;
  • 学科 High energy physics.;Theoretical physics.
  • 学位 Ph.D.
  • 年度 2016
  • 页码 127 p.
  • 总页数 127
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 古生物学;
  • 关键词

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