The computer center (CC) operates 24x7. The operating is staffed on working days from 8 a.m. to 6 p.m. (Mon-Thu) or 8 a.m. to 4 p.m. (Fri). During this time the CC can be reached via Tel. 5007.

At other times as well as on public holidays the operation is not staffed. In important cases, the computer centre can then be reached via on-call duty. This phone numbers are available at exposed locations at DESY / EXFEL.

During the day, the central DESY IT Helpdesk (UCO) is the first point of contact for users regarding questions and problems relating to central DESY IT services and is available by telephone and e-mail during UCO opening hours (see below).


Phone: +49 (0)40 8998 5005
E-Mail: UCO
Location: 2b / 131d
Link: http://it.desy.de/services/uco


Phone: +49 (0)40 8998 5007
Overview of the Service Hours of the IT Group

UCO Opening Hours

CC Opening Hours

Monday - Thursday


8:00 - 16:30

8:00 - 18:00



8:00 - 16:30

8:00 - 16:00