Intial characterization fo a commerical electron gun for profiling high intensity proton beams in Project X
Intial characterization fo a commerical electron gun for profiling high intensity proton beams in Project X
复制标题
X 项目中用于分析高强度质子束的商用电子枪的初步表征
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
W. Blokland
中科院分区：
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作者：
R. Thurman;A. Johnson;A. Lumpkin;J. Thangaraj;D. Zhang;W. Blokland
测量高强度质子束的轮廓是有问题的，因为传统的侵入性技术，如飞线，无法在与束的接触中幸存下来。一种替代方法是使用电子束作为质子束中电荷分布的探测器，就像在ORNL的Spiral中子源所做的那样。在这里，我们提出了一个初步的表征光束从商业电子枪从金博尔物理，打算用于费米实验室的主注入器的项目X。尽管在高电流测量中水平光斑尺寸异常大，但在测量偏转的情况下，下游交叉点X2处的光斑尺寸是合理的。薄箔OTR将有助于光束加热，应该尝试。本实验的下一阶段是用一对载流导线模拟质子束，并设计和建造一个快速偏转器。要考虑的一些剩余问题包括确定观察给定扫描时间的偏转束所需的最小束流以及束团电荷密度纵向变化的影响。
Measuring the profile of a high-intensity proton beam is problematic in that traditional invasive techniques such as flying wires don't survive the encounter with the beam. One alternative is the use of an electron beam as a probe of the charge distribution in the proton beam as was done at the Spallation Neutron Source at ORNL. Here we present an initial characterization of the beam from a commercial electron gun from Kimball Physics, intended for use in the Fermilab Main Injector for Project X. Despite the fact that the horizontal spot size is abnormally large in the high current measurement, the spot size at the downstream cross X2 is reasonable in the context of measuring the deflection. A thin foil OTR would help with the beam heating and should be tried. The next phase of this experiment is to simulate the proton beam with a pair of current carrying wires and to design and construct a fast deflector. Some of the remaining issues to be considered include determining the minimum beam current needed to observe the deflected beam for a given sweep time and the impact of longitudinal variations in the charge density of the bunch.