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Development of a PYTHON-based emittance calculator at Fermilab Accelerator Science and Technology (FAST) facility

机译：在费米实验室加速器科学技术（FAST）设施中开发基于PYTHON的发射率计算器

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摘要

Beam emittance is an important characteristic describing charged particle beams. In linear accelerators (linac), it is critical to characterize the beam phase space parameters and, in particular, to precisely measure transverse beam emittance. The quadrupole scan (quad-scan) is a well-established technique used to characterize transverse beam parameters in four-dimensional phase space, including beam emittance. A computational algorithm with PYTHON scripts has been developed to estimate beam parameters, in particular beam emittance, using the quad-scan technique in the electron linac at the Fermilab Accelerator Science and Technology (FAST) facility. This script has been implemented in conjunction with an automated quad-scan tool (also written in PYTHON) and has decreased the time it takes to perform a single quad-scan from an hour to a few minutes. From the experimental data, the emittance calculator quickly delivers several results including: geometrical and normalized transverse emittance, Courant-Snyder parameters, and plots of the beam size versus quadrupole field strength, among others. This paper will discuss the details of the techniques used, the results from several quad-scans preformed at FAST during the electron injector commissioning, and the PYTHON code used to obtain the results.
机译：射束发射率是描述带电粒子束的重要特征。在线性加速器（直线加速器）中，表征光束相空间参数，尤其是精确测量横向光束发射率至关重要。四极扫描（quad-scan）是一种成熟的技术，用于表征四维相空间中的横向光束参数，包括光束发射率。已经开发了一种具有PYTHON脚本的计算算法，可以使用费米实验室加速器科学与技术（FAST）设施中的电子直线加速器中的四扫描技术估算束参数，特别是束发射率。该脚本已与自动四扫描工具（也用PYTHON编写）结合实现，并将执行单四扫描的时间从一小时减少到了几分钟。根据实验数据，发射率计算器可以快速提供几个结果，包括：几何和归一化横向发射率，Courant-Snyder参数以及束大小与四极场强度的关系图等。本文将讨论所用技术的细节，在电子注入器调试期间在FAST上执行的几次四次扫描的结果以及用于获得结果的PYTHON代码。

著录项

  • 作者

    Green, A. T.;

  • 作者单位

    Northern Illinois University.;

  • 授予单位 Northern Illinois University.;
  • 学科 Physics.;Molecular physics.
  • 学位 M.S.
  • 年度 2016
  • 页码 89 p.
  • 总页数 89
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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