Last Update : 2023/04/19

How to obtain or update PHITS (Latest version is PHITS3.31)

New export control policy from April 2019.

The latest version of PHITS, version 3.31, is distributed to outside Japan* directly from JAEA upon your request. Please fill out the application form, insert your electronic signature, and send it to us via "contact" page by selecting "Submission of application form". You can download a sample application form here. Submission of the application form is required for all users, no matter you are a registered user or not. If you cannot insert your electronic signature in the form, please send the edited application form without your signature and a scanned copy of the signed form. You can also find the instruction on how to add a signature to a PDF file here.

If you are a resident in a member country of the EU, Iceland, Liechtenstein, or Norway, please submit the Notes for General Data Protection Regulation (GDPR) in addition to the application form.

The JAEA International Office reviews your request in terms of the peaceful use of the code. Your request may be declined if you belong to institutes involving weapon developments, or if you live in a non-NPT-member state (Non-signatories to the Treaty on the Non-Proliferation of Nuclear Weapons) or state of concern. If your request is approved, we will send
  • Email with the download link to the PHITS package to applicants whose Email address is NOT a free account,
  • DVD of the PHITS pacakge to applicants whose Email address is a free account such as
It may take up to a few weeks for the screening and delivery processes. If you are a current user, but you need the full package of PHITS, please write your request in the message box in the contact page.

A former version of PHITS, version 2.88, is available from RSICC (for USA and Canada) and OECD/NEA databank.

* Researchers belonging to Japanese institute do not have to submit this application form. Please read the Japanese instruction, regardless of your nationality.
** No charge of handling/administration fee for requesting PHITS

For bug & future update information on PHITS, please subscribe to the PHITS mailing list

If you wish to keep PHITS updated, please register PHITS mailing list.
For registration, please go to "contact" page, and select "(Un) Subscription to mailing list".