Transverse phase space tomography and comparison with Allison scanner data in the RAON heavy ion accelerator

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-09-09 DOI:10.1016/j.nima.2025.171005

Dong-O Jeon , Ji-Ho Jang , Jean-Baptiste Lallement , Veliko Dimov

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引用次数: 0

Abstract

Tomographic phase space reconstruction method based on the beam dynamics code Travel is applied to the RAON linear accelerator in the LEBT and in the MEBT. Due to the low beam energy and the two dipoles in the LEBT, it matters to include the space charge effect and the second-order effects of dipoles. When compared with the Allison scanner emittance data in the LEBT, the phase space tomography demonstrates a very good agreement even though the actual beam is far from Gaussian. The method of fitting rms beam sizes of wire scanners is also compared with the phase space tomography method. The method of fitting rms beam sizes produces a very good agreement when the actual beam is close to Gaussian, because the beam size fitting method uses Gaussian input beam in the simulation.

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RAON重离子加速器横向相空间层析成像及与艾利森扫描仪数据的比较

将基于束动力学代码Travel的层析相空间重构方法应用于LEBT和MEBT中的RAON直线加速器。由于束流能量较低，且LEBT中存在双偶极子，因此考虑空间电荷效应和偶极子的二阶效应很重要。当与LEBT中的艾利森扫描仪发射度数据进行比较时，相空间层析成像显示出非常好的一致性，即使实际光束远离高斯。本文还比较了相空间层析成像法与线扫描仪光束均方根尺寸的拟合方法。由于光束尺寸拟合方法在模拟中使用的是高斯输入光束，因此在实际光束接近高斯的情况下，光束均方根尺寸拟合方法的一致性非常好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.