Conceptual design of proton beam transport system for ADS facilities at J-PARC

Meigo, Shin-ichiro

doi:10.1016/j.jnucmat.2013.11.020

Cited by 5 publications

(6 citation statements)

References 13 publications

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“…To eliminate the H 0 * particles, we performed laser injection and beam bending in one magnet [7], as shown in Fig. 1 (b).…”

Section: Lce Device In the Bending Magnetmentioning

confidence: 99%

“…The laser charge exchange (LCE) technique, which is one non-contact beam extraction technique, was originally developed to measure proton beam profiles [5] and has been applied to beam forming devices [6]. To apply the LCE technique to the beam extraction device for the TEF-P, a new type of LCE device to eliminate the background protons that are not removed by the LCE technique was devised [7]. It is also important to evaluate the conversion efficiency and the long-term power stability of the low power proton beam in order to keep the thermal power of the critical assembly constant.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, the results of the LCE experiment are presented. Figure 1 illustrates the concept of the LCE device for the TEF-P [7]. When a laser beam is injected into a negative hydrogen (H − ) beam with an energy of 400 MeV from the J-PARC linac, the charge of the H − ion crossed with the Fig.…”

Section: Introductionmentioning

confidence: 99%

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

Takei

Hirano

Tsutsumi³

et al. 2018

Plasma and Fusion Research

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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.

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“…To eliminate the H 0 * particles, we performed laser injection and beam bending in one magnet [7], as shown in Fig. 1 (b).…”

Section: Lce Device In the Bending Magnetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Takei

Hirano

Tsutsumi³

et al. 2018

Plasma and Fusion Research

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“…This article focuses on the design of a spallation target in the electron accelerator system [1][2][3]. Monte Carlo simulations have been carried out with targets at varying thicknesses and diameters, bombarded by electron source particles with energy of (18 MeV).…”

Section: Introductionmentioning

confidence: 99%

Neutron ﬂux distribution in (Pb, Ta and W) target using accelerator of 18 MeV electron beam

Didi

Dadoucha

Jaï

et al. 2018

Eurasian j. phys. funct. mater.

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The production of neutrons can be carried out with the bombardment of the nuclei of heavy atoms, with accelerated and energetic particles (generally electrons). The electron collides with the target nuclei, so, 20 to 30 neutrons are produced by a process called "spallation". Several countries begin to develop neutron sources especially in the United States, Europe and Japan. The development of new measuring instruments and methods has generally increased the demand for neutron utilization in several areas, such as accelerator proton-based, where protons bombard a heavy metal target. The atoms of the target are excited, resulting in neutron emission.

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“…LFR (Lead alloy-cooled Fast Reactor) with leadbismuth (Pb-Bi) eutectic (LBE) as a coolant is one of the future nuclear reactors in the world (Generation IV reactors) [1][2][3][4][5]. Liquid Pb-Bi eutectic is also a spallation target material and a coolant for ADS (Accelerator Driven Transmutation System) [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Nano-Channels Early Formation Investigation on Stainless Steel 316Ti after Immersion in Molten Pb-Bi

Rivai

Mardiyanto

Heinzel

2017

MST

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Development of fuel cladding and structural materials in Pb-Bi environment, especially at high temperature, is a critical issue for the deployment of LFR (Lead alloy-cooled Fast Reactor) and ADS (Accelerator Driven Transmutation System). This is because of the corrosive characteristic of Pb-Bi to metals as constituent materials of fuel cladding and structural of the reactors. Corrosion test of a high-chromium austenitic stainless steel i.e. SS316Ti in molten Pb-Bi at 550 ºC has been carried out for about 300 hours continuously. The characterization using SEM-EDS (Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy) showed that an iron oxide as the outer layer and a chromium oxide as the inner layer on the surface of the specimen were formed which in general have protected the steel specimen from corrosion and dissolution attack of Pb-Bi. However, small amount of Pb could penetrate into the iron oxide layer through ultra-narrow channels. Atomic Force Microscopy (AFM) with Electrostatic Force Microscopy (EFM) mode was employed to investigate the phenomena of the nano-channels early formation. The results of the nano-scale investigation showed clearly the formation of the channels at the early time of corrosion as the way of Pb to penetrate into iron oxide outer layer. Abstrak Investigasi Pembentukan Awal Saluran-Nano pada Baja SS316Ti Setelah Pembenaman di Cairan Pb-Bi Pengembangan material kelongsong bahan bakar dan struktur reaktor nuklir di lingkungan Pb-Bi terutama pada temperatur tinggi merupakan isu penting bagi penyiapan LFR (reaktor cepat berpendingin paduan timbal) dan ADS (sistem transmutasi yang digerakkan oleh akselerator). Hal ini karena karakteristik korosif Pb-Bi pada logam bahan penyusun dari kelongsong bahan bakar dan struktur reaktor. Pengujian korosi baja austenitik kromium tinggi yaitu SS316Ti dalam cairan Pb-Bi pada temperatur 550 ºC telah dilakukan selama sekitar 300 jam secara kontinu. Hasil analisis SEM-EDS (Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy) menunjukkan bahwa oksida besi sebagai lapisan luar dan oksida kromium sebagai lapisan dalam pada permukaan spesimen telah terbentuk yang secara umum melindungi spesimen baja dari korosi dan serangan disolusi Pb-Bi. Namun, sejumlah kecil Pb dapat menembus ke dalam lapisan oksida besi melalui saluran ultra-celah sempit. Atomic Force Microscopy (AFM) dengan mode EFM (Electrostatic Force Microscopy) telah digunakan untuk menyelidiki fenomena pembentukan awal saluran tersebut. Hasil penyelidikan skala nano menunjukkan dengan jelas pembentukan saluran tersebut pada saat awal proses korosi yang menjadi jalan bagi Pb untuk menembus lapisan luar oksida besi.

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Conceptual design of proton beam transport system for ADS facilities at J-PARC

Cited by 5 publications

References 13 publications

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

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

Neutron ﬂux distribution in (Pb, Ta and W) target using accelerator of 18 MeV electron beam

Nano-Channels Early Formation Investigation on Stainless Steel 316Ti after Immersion in Molten Pb-Bi

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