How to reach PETRA III & FLASH

On the DESY campus in Hamburg

New signpost with map of the DESY campus in front of the CXNS building 94 (Credit: DESY).

New signpost with map of the DESY campus in front of the CXNS building (bldg. 94 with the User office) (Credit: DESY).

The PETRA III experimental hall 'Max von Laue' (Bldg. 47c) in 2023 (Credit: DESY).

The PETRA III experimental hall 'Max von Laue' (bldg. 47c) close to the CFEL building (bldg. 99) and Max-Planck Institut (MPSD, bldg. 900) (Credit: DESY).

Aerial view of the PETRA III and FLASH experimental halls in August 2020

Aerial view of the DESY campus with the PETRA III and FLASH accelerators and experimental halls in August 2020. (Copyright: DESY / Reimo Schaaf / Britta Liebaug)

Due to construction work on the DESY campus, the traffic situation may change from day to day and we apologise for any inconvenience this may cause.

All DESY gatekeepers know the latest status and can help you to find your way on the campus (see: detailed DESY campus map or digital DESY campus map).

Side gate - Luruper Chaussee 149, 22761 Hamburg - this gate is closest to the PETRA III and FLASH experimental halls, is usually open 24 hours a day for pedestrians and cyclists and open from Monday to Friday, 6:00 to 19:00, for cars or lorries (access info).

Main gate - Notkestraße 85, 22607 Hamburg - this gate is open all time. Key for the Hostel rooms and DACHS cards can be obtained only at the DESY main gate.

Bus stops:
Main gate (Notkestraße): 'Zum Hünengrab (DESY)' (No bus service here until summer 2024, nearest bus stops: 'Trabrennbahn Bahrenfeld' or 'Groß Flottbeker Straße' )
Side gate: 'Luruper Chaussee (DESY)'

For detailed public transport times and connections in Hamburg, please check: HVV. (cashless payment is required on buses, available only via HVV app, prepaid card or pre-purchased ticket)

Bikes 'StadtRAD Hamburg' can also be rented in Hamburg. On the DESY campus there are two city bike stations (one near bldg. 25f/25b and 94, close to the PETRA III hall) where bikes can be returned.

Charging stations for e-cars are also available on the DESY campus (see: terms of use and location (near the roundabout)).

The number of parking spaces is, in particular close to the PETRA III experimental halls (bldg. 47c, 48f, 46g), the FLASH halls (bldg. 28c, 28k) and the CXNS building (bldg. 94, with the User Office and DESY NanoLab), often very limited.