断层扫描技术在束流发射度测量中的应用
Applications of CT in measuring beam transverse-phase-space density
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摘要: 断层扫描技术可为束流诊断提供一种与束流模型无关的新方法，该方法至少能够提高一个量级的束流发射度测量精度，而且可以得到足够分辨率的束流横向四维相空间分布。为此建立了迭代重建算法（ART）程序，作为例子重建了一个二维相空间束流图像，获得了很有意义的结果，表明该技术可以为研究束流传输、验证束流动力学理论提供可靠的束流相空间参数。Abstract: The application of CT can supply a new method of diagnosing beam independent of the beam model. By using this technology a precise two dimensions transverse-phase-space density(2D-TPSD) satisfying for a variety of applications could be obtained. This paper presents a code for the iteration rebuild algorithm (ART) of the method. As an example, the 2D-TPSD image by using this method was obtained. It is proved t hat this method could improve the measuring precision of the beam emittance that will provide a new checking for transport beam theories and beam dynamic theor ies.
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Key words:
- transverse-phase-space density /
- tomography /
- iteration rebuild algorithm
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