Announcement of the J-PARC MLF 2019A

General Use (Short Term) Proposal Round Call for Proposals

The J-PARC Center and CROSS are pleased to announce the opening of the 2019A General Use (Short Term) proposal round from Wednesday 17 October 2018.

Researchers wishing to conduct experiments at any of the MLF neutron or muon beamlines during 2019A (April – November 2019) are invited to submit proposals via the J-PARC Proposal Submission System by the following deadline:

1. Deadline:

17:00 (Japan Time) Wednesday 7 November, 2018

* Demand on the Proposal Submission System is typically very high on the closing day. You are strongly recommended to submit your proposal well in advance of the deadline.

2. How to submit

3. Please Note

  • Expected beam power in 2019A is 500 kW.
  • Be sure to consult the instrument scientist prior to proposal submission if special sample environment (magnet etc.) is required. (more infromation)
  • The use of samples including nuclear fuel materials/elements as a sample is prohibited. Only RI samples permitted by the MLF may be used
  • Users who wish to bring in electrical equipment whose power output rating is 7.5kW and above/7.5kVA and above or equipment whose current rating is 30A and above must include the detailed equipment specifications in the research plan.
  • Graduate students (master’s and doctor’s course) can apply as a Principal Investigator (PI) from the 2018B round.

    Points to consider relevant to the proposal by a graduate student

    • Contact the instrument scientists before submitting the proposal.
    • Enter “Graduate Student” in the field of the applicant’s job position.
    • The applicant’s academic supervisor and the supervisor of the experiment must be included as Collaborators . Add “AS” for Academic Supervisor or “SE” for Supervisor of the Experiment in the field of the respective job positions.
    • The supervisor of the experiment is required to attend and supervise the experiment. In principle, the supervisor of the experiment must be an academic staff member of the applicant’s university including the academic supervisor or a research collaborator (a graduate student is not acceptable).
    • The academic supervisor is required to submit the specified pledge for implementing the experiment, when the proposal is approved.
  • KEK beamlines (refer to “Instruments available”) cannot accept undergraduate students as Collaborators . However, it accepts their participation in the research as interns. If a graduate student participates as a Collaborator, write “Graduate Student” in the field of the job position.
  • Within 60 days after the end of the proposal term of your experiment, the PI (except those of proprietary proposals) is required to submit an Experimental Report. (deadline of report is here) These reports will be open to public on the J-PARC Web site.
  • Intent to Publish: As a condition of performing nonproprietary research, the J-PARC MLF requires users to publish results from their research within 3 years after the completion of the experiment. Authorship of publications based on research from the facility should reflect the normal considerations of recognizing collaborations. It is also important to take into account the considerable efforts of the instrument scientists in their role of designing, constructing, and/or operating the instrument and related facilities. Proprietary users are not required to publish.
  • The assessment of proposals will take into account whether Experiment Reports for previous beamtime allocations have been submitted as required.
  • The web publication of the extract of the approved and conducted proposals shall contain the following information. (Non-proprietary Use, Proprietary Use)

    Post-Proposal Review

    Proposal number, PI’s name, Affiliation, Nationality of the PI’s affiliation, Beamline number, Assigned beamtime.


    Title of Proposal, Allocated beamtime

  • Again in the 2019A proposal round, applicants will be asked to indicate if their research has affinity with the Japanese national priority research areas as identified in the Elements Strategy Initiative. Similarly, applicants will be asked if their proposed research includes, or is likely to include in the future, the complementary use of other major research facilities such as, but not limited to, synchrotron radiation sources (SPring-8, SACLA, PF etc.), supercomputer (K computer etc.), or other quantum beam facilities. If either of the above applies to your proposal, please indicate by marking the relevant check box and adding a brief description as requested. The data is used only to survey current trends in research proposals at the MLF.
  • Proprietary Use Charge is 2,983,000 JPY / day

4. Other important information

5. Contact Us

J-PARC Center Users’ Office
For Non-Proprietary Use: j_proposal[at]
For Proprietary Use: j_proposal_p[at]
For General Questions: jimurisoku[at]
Please replace the [at] with “@”.

6. Instruments available in 2018B at a glance…

Neutron Instruments

Neutron Diffraction
Inelastic Neutron Scattering
SANS and Neutron Reflectometry
Other Neutron Instruments

7. Proposal Review committee

Please choose the appropriate category from the list below. The proposal is reviewed by the subcommittee of the category.


  • P1 Materials Science and Engineering
  • P2 Energy Science and High-Pressure Science
  • P3 Soft Matter, Biomaterials and Liquids
  • P4 Magnetism and Strongly Correlated Electron Systems Elastic Scattering
  • P5 Magnetism and Strongly Correlated Electron Systems Inelastic Scattering
  • P6 Fundamental and Nuclear Physics, Instrumentation, Imaging
  • P7 Industrial Applications(*1)
  • P8 -
  • P9 New User Promotion(*2)

List of keywords for each sub-committee.

(*1)Principle Investigators wishing to apply for the Industrial Application (P7) review field must belong to private companies.

(*2)Users who have previously applied for the new user promotion access system of CROSS are able to select the New Use Promotion (P9) review field