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Commissioning of a multi-purpose offline ion source at the TITAN experiment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment ( IF 1.5 ) Pub Date : 2021-05-04 , DOI: 10.1016/j.nima.2021.165399
Jake A.D. Flowerdew , Ish Mukul , Anna A. Kwiatkowski , Michael E. Wieser , Robert I. Thompson , Jens Dilling

The controlled focusing and transport of ion beams is of paramount importance in particle accelerators, high energy beamlines, and detector systems, as it determines the sensitivity and resolution of the instruments. Therefore, it is essential to model the beam dynamics before the commissioning of new instruments in order to optimise properties such as transmission and energy spread. In this paper, a commercial Plasma Ion Source (PIS), comprised of a heated filament and anode followed by its collimating optics, was modelled using Monte Carlo simulations run with the commercial software SIMION. The simulations were performed for the integration of the source within the existing ion transport optics of TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN). Optimising the voltage configurations using these simulations proved successful in the commissioning of the PIS operated in surface ionisation mode at the TITAN experiment. A Time-of-Flight (TOF) mass spectroscopy method was developed which allowed for the identification of species ionised by the source. The integration of a flexible ion source into the TITAN experiment will open up new opportunities to perform Isotopic Ratios Mass Spectrometry (IRMS) measurements at TITAN.



中文翻译:

在TITAN实验中调试多功能离线离子源

离子束的受控聚焦和传输在粒子加速器,高能束线和检测器系统中至关重要,因为它决定了仪器的灵敏度和分辨率。因此,在调试新仪器之前必须对光束动力学进行建模,以优化诸如传输和能量扩散之类的特性。在本文中,使用商业软件SIMION运行的蒙特卡洛模拟对商业化的等离子源(PIS)进行了建模,该离子源由加热的灯丝和阳极以及其准直光学元件组成。进行了仿真,以将离子源整合到TRIUMF原子与核科学离子阱(TITAN)的现有离子传输光学系统中。在TITAN实验中,使用这些模拟优化电压配置证明在以表面电离模式运行的PIS的调试中是成功的。飞行时间(TOF)质谱方法被开发出来,该方法可以识别由源电离的物质。将柔性离子源集成到TITAN实验中将为在TITAN上进行同位素比质谱(IRMS)测量提供新的机会。

更新日期:2021-05-07
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