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Beam Extraction by the Laser Charge Exchange Method Using the 3-MeV LINAC in J-PARC

机译：在J-PARC中使用3-MeV LINAC通过激光电荷交换方法提取光束

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The Accelerator-driven System (ADS) is one of the candidates for transmuting long-lived nuclides, such as minor actinide (MA), produced by nuclear reactors. For the efficient transmutation of MA, a precise prediction of the neutronics of the ADS is required. To obtain neutronics data for the ADS, the Japan Proton Accelerator Research Complex (J-PARC) has a plan to build the Transmutation Physics Experimental Facility (TEF-P), in which a 400-MeV positive proton (H+) beam will be delivered from the J-PARC linac. Because the TEF-P requires a stable and low background proton beam with a power of less than 10 W, a stable and meticulous beam extraction method is required to extract the low power proton beam from the high power negative hydrogen (H?) beam of 250 kW. To fulfill this requirement, a new type of Laser Charge Exchange (LCE) device was developed. A feature of this LCE device is the elimination of the background protons that are not extracted by the LCE technique. To demonstrate the charge exchange of H?, an LCE experiment was conducted using a linac with an energy of 3 MeV in J-PARC. As a result of the experiment, a charge-exchanged H+ beam with a power of 7.99 ± 0.22 W equivalent was obtained under the J-PARC linac beam condition, and this value nearly satisfied the power requirement of the proton beam for the TEF-P.
机译：加速器驱动系统（ADS）是用于long变核反应堆生产的长寿命核素（例如次act系元素（MA））的候选者之一。为了有效地进行MA的trans变，需要对ADS中子的精确预测。为了获得ADS的中子学数据，日本质子加速器研究中心（J-PARC）计划建造build变物理实验设施（TEF-P），其中将交付400 MeV的正质子（H +）束。来自J-PARC直线加速器。由于TEF-P要求功率小于10 W的稳定且低背景质子束，因此需要一种稳定而细致的束提取方法，以从高功率负氢（H2）束中提取低功率质子束。 250千瓦为了满足此要求，开发了一种新型的激光电荷交换（LCE）设备。该LCE设备的一个特点是消除了LCE技术无法提取的背景质子。为了证明H 2的电荷交换，在J-PARC中使用具有3MeV能量的线性加速器进行了LCE实验。实验的结果是，在J-PARC直线加速器束条件下，获得了等效功率为7.99±0.22 W的电荷交换H +束，该值几乎满足了TEF-P质子束的功率要求。 。

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