Infrastructure Be always well informed with our PSI pocket web application. https://pocket.psi.ch/home Further information on the PSI infrastructure can be found under the various links within the navigation menu to the left. Sidebar Contact Phone: +41 56 310 32 22 Email: hostel@psi.ch Office hours: Mon-Fri: 07:45 - 12:00, 13:00 - 17:00 Otherwise please contact us per email. Directions to PSI How to get to the Paul Scherrer Institute (description and map)