Saturday Tour: Swiss Synchrotron Light Source SLS

August 23, 2025, from 13:00 to 15:00

Experience the Swiss Synchrotron Light Source SLS!

After a comprehensive 20-month upgrade, the Swiss Synchrotron Light Source SLS will resume operation on August 21. To mark this special occasion, we warmly invite you to an exclusive guided tour of the modernized research facility on Saturday, August 23.

Learn firsthand about the new possibilities the SLS offers for science and industry, and take a behind-the-scenes look at one of the world’s leading large-scale research facilities.

The number of participants is limited – registration is therefore required.

We look forward to your visit!

Exploring ground-breaking research: the new exhibition “Visiting the researchers” has 13 thematic islands that invite you on a journey through the fascinating research at PSI.
Exploring ground-breaking research: the new exhibition “Visiting the researchers” has 13 thematic islands that invite you on a journey through the fascinating research at PSI.
© Paul Scherrer Institute PSI/Markus Fischer
Luftbild
Aerial view of the round building of the Swiss Light Source SLS from spring 2024. One third of the old roof has already been removed.
In the aerial view, you can clearly see that the first third of the roof is currently being renovated. Later, the scaffolding will be moved to the next third, and the next, of the round – or more precisely, doughnut-shaped – building. © Paul Scherrer Institute PSI/Markus Fischer
An over 80-metre tall pneumatic crane towers into the sky next to the SLS building.
An over 80-metre tall pneumatic crane towers into the sky next to the SLS building.
(Photo: Paul Scherrer Institute/Mahir Dzambegovic)
SLS Tunnel 2010
The Swiss Light Source SLS is one of the five large research facilities of PSI.
The Swiss Light Source SLS is one of the five large research facilities of PSI. © Paul Scherrer Institute PSI/Mahir Dzambegovic
Kabel
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The tour starts at 13:00 at the PSI Visitor Center.

Language: German

Our tours are free of charge.

Since the number of participants is limited, we recommend registering early by August 21, 2025.

We look forward to your visit.

Registration

© PSI provides image and/or video material free of charge for media coverage of the content of the above text. Use of this material for other purposes is not permitted. This also  includes the transfer of the image and video material into databases as well as sale by third parties.

PSI Visitor Center
Paul Scherrer Institute PSI
Forschungsstrasse 111
5232 Villigen PSI
Switzerland

+41 56 310 21 00
visitorcenter@psi.ch