Last Update : 2023/10/18

How to obtain PHITS (Latest version is PHITS3.33)

The procedure for obtaining PHITS depends on the country where your affiliation is located, regardless of your nationality.
If you belong to a Japanese institute, please read Japanese instruction.
If you belong to an institute in the pre-approved countries, please read "From OECD/NEA Data Bank" section.
For other cases, please read "From JAEA" section.

List of pre-approved countries:
Argentina, Austria, Belgium, Bulgaria, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Netherlands, Norway, Poland, Portugal, Republic of Korea, Spain, Sweden, Switzerland, United Kingdom.

These countries satisfies two conditions:
1. OECD/NEA Data Bank participating country (see here in detail)
2. Group A country in the Japanese export control rule (see here in detail)

From OECD/NEA Data Bank (Recommended)
If you belong to an institute in the pre-approved countries, you can obtain the latest version of PHITS anytime you need through OECD/NEA GitLab. Please read instruction and send your request through your institute. The PHITS page in OECD/NEA databank is here.

If you DO NOT belong to an institute in the pre-approved countries, you can obtain the latest version of PHITS through JAEA. 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. 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
No charge of handling/administration fee for requesting PHITS, but it takes roughly a month for the approval process.

How to update PHITS

Update information is announced via PHITS mailing list. If you are currently using an older version of PHITS and would like to update it, please select "upgrade patch request" in contact page and send the request with your information. If you obtained PHITS through OECD/NEA GitLab, you can update PHITS anytime you need.