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1. User application framework for MLF use 2. Proposal submission and assessment procedures 3. Procedures for conducting experiment

Procedures before conducting experiments at MLF

1. Documentation to be submitted

Users must complete and submit the following documents to the J-PARC Users Office before or at the time of arrival.
  • Letter of Agreement for Experiments: the principal investigator is required to submit a completed Letter of Agreement. In this form, the principal investigator asserts that he/she is familiar with regulations and related rules of J-PARC/MLF and ensures all collaborators understand them thoroughly.
  • Consent: Each collaborator must have a copy of this form signed by their supervisor or manager at their home institution verifying that he/she has permission to engage in research activity at MLF.
  • User agreement for MLF use: If the users conduct proprietary experiment or if additional expenses are necessary to conduct the experiment, the principal investigator is additionally required to submit this form which is signed by their supervisor or manager at their home institution.
Users who are planning to bring chemicals and equipment(s) necessary for conducting experiments at MLF are required to submit documents for safety review. Details of this procedure will be announced on the web site.

2. Insurance

All users must, at their own or their home institutionfs expense, be insured against injuries incurred from unforeseen accidents that may occur during the experiment. However, this requirement is waived for users that are employees of any of the following legal organizations or entities within Japan.
  • public or private colleges, universities, and institutions of higher education
  • public or not-for-profit research organizations
  • private companies


Procedures requested after completion of experiments at MLF


3 Notification of completion of experiment

Users are asked to submit a beamtime completion form as soon as the experiment at MLF is completed. The beamtime used for the experiment and the amount of gas consumed during the experiment should be reported in the beamtime completion form. The users must receive a certification of completion from the person responsible (or from an equivalent substitute) for the experimental instrument.
The date certified by the person responsible for the instrument will be the official completion date of the experiment.

4. Experimental reports

Nonproprietary users are obliged to submit an experimental report for each experiment conducted at MLF within 60 days from the day after the completion date.

The experimental report should include a description of the methods used to perform the MLF experiment as well as the results that were obtained. The final conclusions and data analysis should also be included if possible. If the users could not conduct the experiment as proposed, the reason(s) should be reported in the experimental report. Note that submitted reports will be included and published in the MLF annual report.

If the experimental report is not submitted until the deadline, the next proposal of the user may be rejected.

5. Publishing your research

Any publications from experiments at MLF should contain an acknowledgement of the support received from MLF. For example, gExperiments were carried out using the neutron (muon) instrument at the MLF Pulsed Neutron and Muon Source at J-PARC.h It is also expected that you will include the person(s) responsible for the MLF instrument(s) that was used, as well as any MLF/J-PARC members that provided significant input to the experiment, as co-author(s) on your publication. You should discuss this with the person(s) responsible for the MLF instrument(s) during the experiment.

Once the results have been published, users should notify MLF via the registration form which is available through the website or E-mail in which the proposal number, the instrument number, the name of the principal investigator and the publications list are shown.

E-mail: j-uo@ml.j-parc.jp
Maximum size of attachment: 4MB

5. Data access policy

The experimental data taken by the non-proprietary experiments will be stored in the data storage system of MLF. After three years of storage period for which the experimental group is expected to publish in an open literature, the J-PARC center shall provide those experimental with the user upon the condition that he or she applied for the use of the data in prior and its purpose was approved through a review of J-PARC Center.

1. User application framework for MLF use 2. Proposal submission and assessment procedures 3. Procedures for conducting experiment


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