Call for Proposals

General Use Proposals (Short-term and One-year)

Announcement of the J-PARC MLF Call for General Use Proposals (Short-term and One-year)

2024B Call for General Use Proposals (Short-term, and One-year for BL11) to use neutron and muon beamlines is open

from April 17 to May 9, 2024, 17:00 Japan Time [UTC+09:00].

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When you submit your proposals, please use the latest Research Plan template.


J-PARC Center Users’Office

For Experiments Non-Proprietary Use: j_proposal[at]
For Experiments Proprietary Use: j_proposal_p[at]
For General Questions: jimurisoku[at]
* Please replace the [at] with @.

Former General Use Program

New User Promotion

CROSS is now accepting proposals and expressions of interest for access to the neutron Public Beamlines at J-PARC MLF under the 2024B New User Promotion.
New User Promotion is aimed at assisting novice users of neutron-based techniques gain experience and expertise that will allow them to become independent General Use applicants in the future.

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Urgent Access

The Directors of CROSS and MLF may at any time grant beamtime from their discretionary allocation in order to facilitate research that they believe is worthy of expedited access to MLF. To qualify for Urgent Access beamtime, the proposed experiment must be of major scientific, economic or social significance.

Applications to the Urgent Access mechanism can be made at ANY TIME.

If you wish to apply for Urgent Access beamtime, please contact the director of MLF Division of the J-PARC Center.

Toshiya Otomo
Director of Materials and Life Science Division J-PARC Center Tokai-mura,
Naka-gun, Ibaraki-ken, 319-1195, Japan
Tel.:+81-29-284-4333/Fax: +81-29-284-4899
E-mail: toshiya.otomo[at]

Call for Long-Term Proposals

Call for 2024L J-PARC MLF Long-Term Proposals

Application for Long-Term Proposals with beamtime allocations starting from 2024B beamtime period is accepted during the following period:

From March 17 – April 8, 2024 at 17:00 Japan Time (UTC+09:00)

For further information

Former General Use Proposals (Long term)