Japan Proton Accelerator Research Complex
J-PARC is a Japanese government-funded high-intensity proton accelerator complex in Tokai Village, Ibaraki, jointly operated by JAEA and KEK. It uses a Linac–RCS–Main Ring chain to produce neutron, muon, neutrino, and K-meson beams for university, government, and industry researchers worldwide.
- Company typePrivate
- Founded2009
- HeadquartersNaka, Japan
- Headcount501–1,000
- GTM typeB2B
- OfferingServices
What Japan Proton Accelerator Research Complex does
J-PARC (Japan Proton Accelerator Research Complex) is a high-intensity proton accelerator research facility located in Tokai Village, Naka District, Ibaraki Prefecture, Japan. It operates a three-stage accelerator chain — a Linear Accelerator (Linac), a Rapid Cycling Synchrotron (RCS, 3 GeV), and a Main Ring (MR, 50 GeV) — to deliver high-intensity proton beams that produce secondary particle beams (neutrons, muons, neutrinos, and K mesons). These beams feed four experimental facilities: the Hadron Experimental Facility, the Neutrino Experimental Facility (the source of the world-highest-intensity neutrino beam sent 295 km to Super-Kamiokande for the T2K experiment), the Materials and Life Science Experimental Facility (MLF), and a Proton Beam Irradiation Facility for applied transmutation-system research.
The facility is jointly operated by two Japanese public research corporations — the Japan Atomic Energy Agency (JAEA) and the High Energy Accelerator Research Organization (KEK) — and was established under a governmental framework with operations beginning in 2009. Users access beam time through a formal application and review process administered by the J-PARC Users Office, drawing from university researchers, national research institutes, and private companies pursuing materials, hydrogen storage, fuel cell, life science, and particle-physics research. The Neutron Science Center, operated by partner organization CROSS, supports materials and life-science use.
J-PARC is funded primarily through Japanese government appropriations and does not generate commercial revenue. Its go-to-market is community-led science-outreach: the official website, YouTube channel, Twitter/X, and LinkedIn profile disseminate research news; recurring programs (annual symposia, J-PARC Hello Science events, lecture tours, and facility open houses) engage both scientific users and the public. Distribution of research access occurs through the Users Office under a professional-services / beam-time allocation model; beam time is allocated rather than sold, with pricing not publicly disclosed. The active user base spans academia (primary), national research institutes, and industrial R&D labs developing next-generation energy and functional materials.
Japan Proton Accelerator Research Complex firmographics
Firmographics- Name
- Japan Proton Accelerator Research Complex
- Legal name
- J-PARCセンター (Japan Proton Accelerator Research Complex)
- Website
- https://j-parc.jp
- Company type
- Private
- Founded year
- 2009
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- J-PARC is a Japanese government-funded high-intensity proton accelerator complex in Tokai Village, Ibaraki, jointly operated by JAEA and KEK. It uses a Linac–RCS–Main Ring chain to produce neutron, muon, neutrino, and K-meson beams for university, government, and industry researchers worldwide.
- Ownership category
- akta.pro rank
Japan Proton Accelerator Research Complex industry classification
Industry- Product category
- Scientific Research Infrastructure
- akta.pro primary industry
- Research & Test Reactor Operations (Non-Commercial Power) (EUACADAH)
Keywords
Where Japan Proton Accelerator Research Complex is headquartered
LocationHeadquarters
- HQ city
- Naka
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
Japan Proton Accelerator Research Complex business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Personnel, Technology or R&D, Operations
Revenue model
- Beam Time Allocation: J-PARC provides beam time to researchers from universities, research institutes, and private companies. The facility operates as a national research infrastructure with funding primarily from the Japanese government through JAEA and KEK. Access is provided through application and review processes managed by the Users Office.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels8 records
Japan Proton Accelerator Research Complex product offering
Product offeringCore offering
J-PARC operates a multi-stage high-intensity proton accelerator complex (Linear Accelerator, Rapid Cycling Synchrotron, and Main Ring) that produces intense secondary particle beams including neutrons, muons, neutrinos, and K mesons. These beams are delivered through dedicated experimental facilities to support fundamental particle and nuclear physics research, materials science analysis, life science studies, and applied proton beam research for researchers from universities, national institutes, and private companies.
Product overview
J-PARC (Japan Proton Accelerator Research Complex) is a research facility, not a commercial product company. It operates a multi-stage proton accelerator system comprising a Linear Accelerator (linac), Rapid Cycling Synchrotron (RCS), and Main Ring (MR) to produce high-intensity proton beams. These beams generate secondary particle beams (neutrons, muons, neutrinos, kaons) used in three main experimental facilities: the Hadron Experimental Facility for particle physics research, the Neutrino Experimental Facility for the T2K experiment, and the Materials and Life Science Experimental Facility (MLF) for neutron and muon beam research. The facility also includes a Proton Beam Irradiation Facility for applied research.
Differentiator
Problem solved
Functional benefit
Products and services
- Linear Accelerator (Linac) Initial accelerator stage that brings protons to injection energy before handoff to the Rapid Cycling Synchrotron; used to produce high-intensity proton beams for downstream research facilities.
- Rapid Cycling Synchrotron (RCS) Accelerates protons from linac energy to 3 GeV for injection into the Main Ring and supplies pulsed neutron beams to the Materials and Life Science Experimental Facility (MLF).
- Main Ring (MR) Final accelerator stage that boosts protons from 3 GeV to 30 GeV (later 50 GeV) for delivery to the Hadron and Neutrino experimental facilities.
- Hadron Experimental Facility Experimental facility providing K-meson and other secondary hadron beams for particle and nuclear physics experiments, including studies of strange and charmed hadrons and searches for physics beyond the Standard Model.
- Neutrino Experimental Facility Generates a world-highest-intensity neutrino beam directed 295 km to Super-Kamiokande for the T2K long-baseline neutrino oscillation experiment, enabling studies of neutrino properties and CP violation.
- Materials and Life Science Experimental Facility (MLF) Provides neutron and muon beamlines for materials structure analysis, hydrogen storage research, battery development, protein structure studies, and cultural property analysis, serving materials and life science researchers from universities, national institutes, and industry.
- Proton Beam Irradiation Facility (Accelerator-Driven Transmutation Experimental Facility) Provides proton beam application research capabilities including experiments on accelerator-driven transmutation systems for nuclear waste treatment and related applied studies.
Companies that use Japan Proton Accelerator Research Complex
Customer profileNamed customers3 records
Segments2 records
Ideal customer profiles3 records
Japan Proton Accelerator Research Complex technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Japan Proton Accelerator Research Complex partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered minor and core.
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)minorMEXT (文部科学省) is listed as a supporting organization for the J-PARC 2024 International Symposium public lecture, indicating government support for J-PARC activities.
- Ibaraki PrefectureminorIbaraki Prefecture (茨城県) is listed as a supporting organization for the J-PARC 2024 International Symposium, indicating local government support for the facility.
- Tokai VillageminorTokai Village (東海村) is listed as a supporting organization for the J-PARC 2024 International Symposium, indicating community support for the facility.
- Japan Atomic Energy Agency (JAEA)coreJAEA (国立研究開発法人 日本原子力研究開発機構) is the primary operating partner of J-PARC. The J-PARC Center is established as a joint research center under JAEA's jurisdiction, with JAEA providing the primary institutional framework and operational support for the facility located at the Tokai campus.
- High Energy Accelerator Research Organization (KEK)coreKEK (大学共同利用機関法人 高エネルギー加速器研究機構) is the co-operating partner of J-PARC. As a inter-university research institute corporation, KEK contributes scientific expertise and collaborates on accelerator development and particle physics experiments, particularly neutrino research.
- Comprehensive Research Organization for Science and Society (CROSS)minorCROSS (一般財団法人 総合科学研究機構 中性子科学センター) operates the Neutron Science Center and collaborates with J-PARC on neutron science research, providing user support and promoting neutron beam utilization for materials and life science research.
Scale indicators1 record
Recent moves6 records
Expansion highlights5 records
Japan Proton Accelerator Research Complex competitors and assessment
Company assessmentDirect peers
- DESY (Deutsches Elektronen-Synchrotron): German national accelerator center operating synchrotron and free-electron laser facilities for particle physics and photon science research. Comparable as a multi-purpose accelerator research facility serving broad scientific user communities.
- CERN (European Organization for Nuclear Research): Operates the world's largest particle physics complex, including the LHC and associated accelerator chain producing high-intensity proton beams for fundamental physics research. Directly comparable to J-PARC as a multi-stage proton accelerator facility serving international research communities.
- European Spallation Source (ESS): Next-generation European spallation neutron source under construction in Sweden, designed to be the world's most powerful linear accelerator-driven neutron facility. Closest direct competitor and capability benchmark to J-PARC's neutron science program.
- Fermi National Accelerator Laboratory (Fermilab): U.S. Department of Energy national laboratory operating the Tevatron legacy complex and main injector producing high-intensity proton beams, with a major neutrino program (DUNE) closely parallel to J-PARC's T2K/Hyper-Kamiokande work.
- Paul Scherrer Institute (PSI): Swiss national laboratory operating a high-intensity proton cyclotron producing neutron and muon beams for materials science, particle physics, and life sciences. Directly comparable to J-PARC's MLF neutron/muon program and serves an analogous international user community.
- Brookhaven National Laboratory: DOE national laboratory operating the Relativistic Heavy Ion Collider and other accelerator facilities for nuclear physics and applied research. Functions as a comparable multi-user national accelerator research complex.
- TRIUMF: Canada's particle accelerator center operating the world's largest cyclotron for nuclear physics, materials science, and isotope production. Comparable to J-PARC in scope of multi-disciplinary accelerator-based research and user services.
- SLAC National Accelerator Laboratory: Stanford-operated DOE national accelerator laboratory with linear accelerator heritage, conducting particle physics and photon science research. Operates comparable large-scale research infrastructure serving international scientific user communities.
- Oak Ridge National Laboratory (Spallation Neutron Source): Operates the SNS, a leading pulsed spallation neutron source for materials science research. Directly comparable to J-PARC's MLF facility for neutron-based materials characterization serving international users.
Broad incumbents
- Argonne National Laboratory: DOE national laboratory operating the ATLAS linear accelerator for nuclear physics research plus broader materials and life science programs. Functions as a comparable multi-purpose accelerator-based research facility under government auspices.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Japan Proton Accelerator Research Complex social profiles
Digital presenceJapan Proton Accelerator Research Complex financial estimates
Financial estimateRevenue estimate
Valuation estimate
Japan Proton Accelerator Research Complex leadership team
Management profileNumber of profiles
Profiles1 record
Japan Proton Accelerator Research Complex funding detail
Funding detailFunding overview
Funding rounds
Investors
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Japan Proton Accelerator Research Complex M&A and investment
M&A and investmentM&A
Investments
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Frequently asked questions about Japan Proton Accelerator Research Complex
What does Japan Proton Accelerator Research Complex do?
J-PARC operates a multi-stage high-intensity proton accelerator complex (Linear Accelerator, Rapid Cycling Synchrotron, and Main Ring) that produces intense secondary particle beams including neutrons, muons, neutrinos, and K mesons. These beams are delivered through dedicated experimental facilities to support fundamental particle and nuclear physics research, materials science analysis, life science studies, and applied proton beam research for researchers from universities, national institutes, and private companies.
Is Japan Proton Accelerator Research Complex a public or private company?
Japan Proton Accelerator Research Complex is a private company. It is classified as state government owned and is currently operating.
When was Japan Proton Accelerator Research Complex founded?
Japan Proton Accelerator Research Complex was founded in 2009. It employs 501 to 1,000 people.
Where is Japan Proton Accelerator Research Complex based?
Japan Proton Accelerator Research Complex is headquartered in Naka, Japan, in the Asia region.
How does Japan Proton Accelerator Research Complex make money?
One revenue line is on record: beam Time Allocation.
Who are Japan Proton Accelerator Research Complex's main competitors?
Direct peers on record are DESY (Deutsches Elektronen-Synchrotron), CERN (European Organization for Nuclear Research), European Spallation Source (ESS), Fermi National Accelerator Laboratory (Fermilab), Paul Scherrer Institute (PSI), Brookhaven National Laboratory, TRIUMF, SLAC National Accelerator Laboratory and Oak Ridge National Laboratory (Spallation Neutron Source). Argonne National Laboratory is listed as a broad incumbent.
Does Japan Proton Accelerator Research Complex have an API?
No public API is recorded for Japan Proton Accelerator Research Complex.
What industry is Japan Proton Accelerator Research Complex in?
Japan Proton Accelerator Research Complex's product category is Scientific Research Infrastructure. Its primary akta.pro industry code is EUACADAH, Research & Test Reactor Operations (Non-Commercial Power).