The ITER Intranet site is available only to authorised users.
Unauthorised users will find a technical overview description (in ~700 pages) of the ITER design here.
Participation in ITER is only possible under the auspices of one of the existing ITER Participants. If you need deeper access to the background information, you can direct a request to gain access to the ITER Baseline web site, with permission and access information, to the Leader of the Participant Team for your country. The Team Leaders can be found here.
If you are working with the ITER Project Team (International Team) to develop the project documentation, then you need a sponsor from within the Project Team to arrange access for you.