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Design, modeling and simulations of a Cabinet Safe System for a linear particle accelerator of intermediate-low energy by optimization of the beam optics.

机译:通过优化光束光学系统,对中低能量线性粒子加速器的内阁安全系统进行设计,建模和仿真。

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摘要

As part of an accelerator based Cargo Inspection System, studies were made to develop a Cabinet Safe System by Optimization of the Beam Optics of Microwave Linear Accelerators of the IAC-Varian series working on the S-band and standing wave pi/2 mode. Measurements, modeling and simulations of the main subsystems were done and a Multiple Solenoidal System was designed.; This Cabinet Safe System based on a Multiple Solenoidal System minimizes the radiation field generated by the low efficiency of the microwave accelerators by optimizing the RF waveguide system and by also trapping secondaries generated in the accelerator head. These secondaries are generated mainly due to instabilities in the exit window region and particles backscattered from the target.; The electron gun was also studied and software for its right mechanical design and for its optimization was developed as well. Besides the standard design method, an optimization of the injection process is accomplished by slightly modifying the gun configuration and by placing a solenoid on the waist position while avoiding threading the cathode with the magnetic flux generated.; The Multiple Solenoidal System and the electron gun optimization are the backbone of a Cabinet Safe System that could be applied not only to the 25 MeV IAC-Varian microwave accelerators but, by extension, to machines of different manufacturers as well. Thus, they constitute the main topic of this dissertation.
机译:作为基于加速器的货物检查系统的一部分,已经进行了研究,以通过优化工作在S波段和驻波pi / 2模式下的IAC-Varian系列的微波线性加速器的光束光学系统来开发内阁安全系统。对主要子系统进行了测量,建模和仿真,并设计了多电磁系统。这种基于多重螺线管系统的内阁安全系统通过优化RF波导系统并捕获加速器头中产生的次级气体,将微波加速器效率低下产生的辐射场最小化。这些二次粒子的产生主要是由于出射窗区域的不稳定性以及从目标向后散射的粒子。还对电子枪进行了研究,并开发了正确的机械设计和优化软件。除了标准的设计方法外,还可以通过略微修改喷枪的配置并在腰部位置放置一个螺线管,同时避免将产生的磁通量穿入阴极来实现注射工艺的优化。多重螺线管系统和电子枪优化是机柜安全系统的基础,该系统不仅可以应用于25 MeV IAC-Varian微波加速器,而且还可以应用于不同制造商的机器。因此,它们构成了本论文的主题。

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