Linear IFMIF Prototype Accelerator (LIPAc): Installation activities for Phase-B beam commissioning in Rokkasho

Kondo, Keitaro; Ayala, Juan Marcos; Bolzon, B.; Cara, Philippe; Dzitko, Hervé; Ebisawa, Takashi; Fagotti, E.; Gex, Dominique; Heidinger, R.; Hirata, Yoshihiro; Ichimiya, Ryo; Ikeda, Y.; Jiménez, David; Jokinen, Antti; Kasugai, Atsushi; Kikuchi, Takayuki; Knaster, J.; Komata, M.; Maebara, S.; Marqueta, Alvaro; Moya, Iván; Nishimura, Shinobu; O’hira, Shigeru; Okumura, Y.; Pérez, Mario; Phillips, G.; Podadera, I.; Pruneri, Giuseppe; Sakamoto, K.; Scantamburlo, Francesco; Shinya, Takahiro; Sugimoto, M.; Weber, M.

doi:10.1016/j.nme.2018.04.011

Cited by 13 publications

(3 citation statements)

References 5 publications

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“…Nowadays, with the target fusion power reduction of the less ambitious demonstration reactors, the needs of dpa/fpy of a fusion relevant neutron source follows, hence one only accelerator is considered in the proposed facilities [106,108], with a substantial facility simplification and construction cost reduction involved. The success of the IFMIF/ EVEDA phase [64,91] in its assigned tasks in the engineering design of IFMIF [89] and general validation activities of a Li(d,n) neutron source facility [79,92] with the construction and operation of full scale prototypes of all the sub-facilities involved [93][94][95][96][97] and the on-going validation of the accelerator facility [150] allow the accurate anticipation of schedule and cost. Its construction can only be subject of an international collaboration, given that, though the cost is affordable (<5% of a demonstration fusion reactor), the technology involved is not available in a single country to face its construction on a timely manner.…”

Section: Discussionmentioning

confidence: 99%

An assessment of the available alternatives for fusion relevant neutron sources

Knaster¹

2018

Nucl. Fusion

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The discovery of void swelling in neutron-irradiated stainless steels by Cawthorne and Fulton in 1966 showed that radiation effects would seriously affect the lifetime of fission reactors. A few years later, in the early 1970s, serious damage levels were observed in core components of the first commercial fission reactors that had been in operation for one decade. Driven by the harder neutron spectrum, the fusion community was impelled to explore the technical possibilities to make available a fusion relevant neutron source to anticipate the difficulties faced by the fission reactors community and ensure the long-term operation of a fusion reactor. In 1976, the conclusions of the first review published announced the assets and drawbacks of the different possibilities, which today despite the four decades passed and the sound technological advancements, continue being basically the same. A suitable neutron spectrum can be theoretically obtained both from plasma-based or accelerators based facilities with either gas, liquid or solids targets. Needed facilities performances, available irradiation volumes that the concept allow and cost are at stake. In the past, the cost of the most promising facility based on stripping the neutron from a deuteron on a lithium target was misleadingly peered with that of a fusion reactor. A tokamak with sufficient volume to irradiate equipment under fusion relevant conditions will be likely available in the future once commercial fusion reactors have become a reality; unfortunately, this concept does not match the needs timely, and is unrealistic w.r.t. its costs nowadays with worldwide efforts prioritizing ITER. In this article, we will focus on the technical aspects and assess the present maturity of different existing possibilities based on nowadays technologies to count with neutrons at a suitable flux and spectrum to characterize and qualify fusion materials to be timely ready with our world fusion roadmaps.

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Section: Discussionmentioning

confidence: 99%

An assessment of the available alternatives for fusion relevant neutron sources

Knaster¹

2018

Nucl. Fusion

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“…Phase B in 2019 [7]. Since August of 2019, Phase B+ had been started with the new configuration, dismantling the LPBD, installing MEBT Extension Line (MEL) which extended transport line from MEBT to be replaced with SRF LINAC at further beam operation phase, HEBT, a high power beam dump (hereafter BD) and changing the location of D-Plate to between the first triplet and the second doublet quadrupoles in HEBT.…”

Section: Jinst 19 T05013mentioning

confidence: 99%

High beam current operation with beam diagnostics at LIPAc

Kwon,

Abbon,

Akagi

et al. 2024

J. Inst.

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The Linear International Fusion Materials Irradiation Facility Prototype Accelerator (LIPAc) is under commissioning in Rokkasho Fusion Institute in Japan and aims to accelerate 125 mA D+ at 9 MeV in Continuous Wave mode for validating the IFMIF accelerator design. To ensure a fine characterization and tuning of the machine many beam diagnostics are installed spanning from injector to the beam dump. The beam operations in 1.0 ms pulsed D+ at 5 MeV were successfully completed with a low power beam dump in 2019. Despite the challenges posed by the pandemic, the crucial transition to a new LINAC configuration was also finalized to enable operation in 1.0 ms — CW D+ at 5 MeV with the high-power beam dump. The 1st beam operation of the configuration was carried out in 2021. The experiences and challenges encountered during these beam campaigns are described in this paper.

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“…These can be identified in the conceptual schema of Figure 6.23 [J4], [76], [212]. Article [222] illustrate the LIPAc components and layout. For more clear idea, Figure 6.24 shows the critical areas where these components are.…”

Section: Rh Maintenance Proceduresmentioning

confidence: 99%

Methods, strategies and application cases for robotic telemanipulation in hazardous environments

Chacón¹

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Linear IFMIF Prototype Accelerator (LIPAc): Installation activities for Phase-B beam commissioning in Rokkasho

Cited by 13 publications

References 5 publications

An assessment of the available alternatives for fusion relevant neutron sources

An assessment of the available alternatives for fusion relevant neutron sources

High beam current operation with beam diagnostics at LIPAc

Methods, strategies and application cases for robotic telemanipulation in hazardous environments

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