Paul Scherrer Institute (PSI)
User Office
5232 Villigen PSI

Main telephone number: +41 56 310 46 66
Main e-mail address:

Please note our contact page.

PSI User Office wants its website to be user-friendly. We welcome your feedback. Please send your suggestions to

Our Web content is subject to change without warning.

PSI will investigate any evidence of potential violations of laws, instructions, directives or third-party rights caused by content on PSI pages, and will instigate measures as necessary.