Top » Announcement of the J-PARC MLF 2020A General Use (Short Term) Proposal Round Call for Proposals

Announcement of the J-PARC MLF 2020A
General Use (Short Term) Proposal Round Call for Proposals(Closed)

Major changes in 2020A General Use (Short Term) Proposal Round:
  • Experiment period is from April to July 2020
  • Categories of research fields that you will choose when submitting the proposal are changed
  • BL11 (PLANET) starts acceptance of one-year proposals

Details are shown below.

The J-PARC MLF is pleased to announce the opening of the 2020A General Use (Short Term) proposal round from Thursday, 17 October 2019.

Researchers wishing to conduct experiments at any of the MLF neutron or muon beamlines during 2020A (April - July 2020) are invited to submit proposals via the J-PARC Proposal Submission System following the instructions below.

1. Deadline

17:00 Thursday, 7 November 2019 (Japan Standard Time)

* 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



  • Obtain the consent of the person before registering him/her as a collaborator (The proposal may be rejected if the collaborator's name is written without his/her consent.)
  • It is recommended to consult the instrument scientist prior to proposal submission on the sample environment, experiment condition, etc.
    The contact information, sample environment, specs of the instrument, etc. can be found in the page of the instrument.
  • Please write the application form in Enlgish. (Application written in Japanese is accepted limited to P7 Industrial Applications and P9 New User Promotion.)

One-year proposal (BL11 PLANET)

BL11 (PLANET: High-Pressure Neutron Diffractometer) starts acceptance of one-year proposals of which experiment period is one year (two terms). Conditions for applicaion and how to write the application form are here.

3. Experiment period and estimation of beam time

Experiment period

April – July 2020

* Please note that the last month of 2020A is July.

Estimation of beamtime

Estimate the beamtime with beam power of 500 kW.

4. Eligibility to apply

  1. Researchers belonging to a university, private company, public research institute, etc.
  2. Graduate students (masters and PhD students)*

* Instructions for the proposal by a graduate student

  • Graduate students intending to make an application as a Principal Investigator are required to contact the instrument scientists before submitting the proposal.
  • Enter "Graduate Student" in the field of the applicant's job title.
  • The applicant's academic supervisor must be registered as a Collaborator. In the field of job title, add "AS" after his/her job title.
  • An academic staff member of the applicant's university, which includes his/her academic supervisor, or a research collaborator (not including graduate students) is required to attend and supervise the experiment (experiment supervisor). The experiment supervisor must be included as a Collaborator. In the field of job title, add "ES" after his/her job title.
  • If AS and ES are not entered on the form, the application is not received.
  • If the proposal is approved, the academic supervisor is required to submit the specified pledge for implementing the experiment.

With regard to applicants belonging to the organizations listed in the Foreign End User Listof METI or the nationals of non-NPT countries, eligibility to apply is decided in consultation with MEXT etc.

5. Instruments available in 2020A

Please contact the instrument scientist for the specification of the instrument.

Neutron Instruments

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

Muon Instruments

Muon Spectroscopy

Click here for the sample environment.

6. Choose the review field

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

Neutron (* Categories of research fields are changed in 2020A)

P1 Structural Science (Crystal, Amorphous and Liquid)
P2 Energy Science and High-Pressure Science
P3 Soft Matter and Biological Matter
P4 Magnetic Material and Strongly Correlated Electron System (Structure)
P5 Magnetic Material and Strongly Correlated Electron System (Dynamics)
P6 Fundamental Physics, Nuclear Physics, Instrumentation, Imaging
P7 Industrial Application (*1)
P8 Materials Engineering
P9 New User Promotion (*2)

(*1) Application for P7 "Industrial Applications" is limited to the proposals from PIs belonging to private companies.

(*2) Application for P9 "New User Promotion" is limited to the proposals for which pre-application has been submitted.


Q1 Electronic Properties of Matter & Hydrogen in Matter
Q2 General Applications

List of keywords for each sub-committee.

7. Evaluation criteria

  • Submitted proposals are assessed and selected based on the evaluation criteria.
  • The scientific value of the proposal and the appropriateness of the requested beamtime will be taken into consideration when deciding the beamtime.

8. Please Note

  1. The use of samples including nuclear fuel materials/elements as a sample is prohibited. Only RI samples permitted by the MLF may be used.
  2. Be sure to consult the instrument scientist prior to proposal submission if special sample environment (magnet etc.) is required.
  3. If the sub-committee decided that a different beamline is more suitable for the experiment than the beamline you have chosen, the beamline may be changed.
  4. Users who intend 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.
  5. KEK beamlines (refer to "Instruments available") cannot accept undergraduate students as Collaborators. However, they can participate in the research as interns. If a graduate student participates as a Collaborator, write "Graduate Student" in the field of the job title.
  6. Experiment is not allowed to be implemented if it is attended only by students (including graduate students).
  7. If researchers belonging to a private company want to use a muon instrument, please contact us at the email address indicated at the bottom in advance.
  8. J-PARC also welcomes Preliminary (P-type) proposals to use the muon instruments at the MLF. For the details, please click here. If submitting a P-type proposal, please designate it as such within the online system when prompted.
  9. For using Ibaraki Neutron Beamline (BL03,BL20) for industrial purposes or in the framework of the Innovative Research Proposal (Overseas academic user program), please apply for the proposal call by Ibaraki Prefecture. The prefecture accepts the industrial application proposal throughout the year. For the details, please click here.

9. Element Strategy Initiative and Complementary Use

  • Again in the 2020A 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 (HPCI with 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.

10. Charge for use

  • For Non-Proprietary Use, charge for use is exempted by publishing the results.
  • Proprietary Use Charge is 2,983,000 JPY / day

11. Publication of results (Non-Proprietary Use)

  • 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.

12. Disclosure of information

  • 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

13. Contact Us

J-PARC Center Users'Office

For Non-Proprietary Use:
For Proprietary Use:
For General Questions: