ABSTRACT

The Japan Atomic Energy Agency (JAEA) has designed a Transmutation Physics Experimental Facility (TEF-P) as an experimental facility in the Japan Proton Accelerator Research Complex (J-PARC). The TEF-P is a critical assembly driven by a low-power proton beam, a maximum of 10 W, which is extracted from a high-power beam source, such as 250 kW of 400 MeV proton beam of the J-PARC linac. To extract such a low-power proton beam from the high-power proton beam, we developed a laser charge exchange (LCE) device and employed its technique, which is one of the non-contact beam extraction techniques. To confirm the performance of the LCE device, a low-power proton beam was extracted using a negative-hydrogen linac having an energy of 3 MeV, and a bright continuous laser. A 0.57 mW proton beam was successfully extracted with a laser stripping efficiency of $2.3\times {10}^{-5}$. These values obtained are in good agreement with the estimated values.

摘要

日本原子能机构（JAEA）设计了一种Trans变物理实验设施（TEF-P），作为日本质子加速器研究中心（J-PARC）的实验设施。TEF-P是由最大功率为10 W的低功率质子束驱动的关键组件，该功率是从高功率束源中提取的，例如250 kW的J-PARC直线加速器的400 MeV质子束。为了从高功率质子束中提取出这种低功率质子束，我们开发了一种激光电荷交换（LCE）装置并采用了其技术，这是非接触束提取技术之一。为了确认LCE装置的性能，使用能量为3 MeV的负氢线性加速器和明亮的连续激光提取了低功率质子束。0.57 mW的质子束被成功提取，激光剥离效率为$2.3\times {10}^{-5}$。获得的这些值与估计值非常一致。