Test Beams at DESY

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         (DESY internal only)


Luftbild mit DESY-Beschleunigern
Foto: Copyright: © DESY 2013

Foto: Marcel Stanitzki

DESY operates a test beam facility with three test beam lines (21, 22 and 24). These electron or positron beams are converted bremsstrahlung beams from carbon fibre targets in the electron-positron synchrotron DESY II with up to 1000 particles per cm² and energies from 1 to 6 GeV, an energy spread of ~5% and a divergence of ~1mrad. 

More detailed information on:

Ralf Diener (FTX-TBT), Norbert Meyners (MEA1) and Marcel Stanitzki (FTX-TBT) are in charge of coordination of the DESY Test Beam. Beam time can be requested by the test beam coordinators via email, but please read first the test beam rules!

Be aware that the German and DESY regulation forces all participants to attend a briefing about general, special and radiation safety before you can start to work at the Test Beam (each Monday at 13.00). To document the compliance with these requirements,  all users will be invited to register via INDICO as soon as the requested beam time has been fixed. The INDICO registration is also nessesary to issue a valid access card to work in the test beam areas secured by the access control system DACHS (DESY Access Handling System).  Short after the INDICO-registration the DACHS card can be obtained at DESY, in bldg. 6/ R110 (Mon-Thu 8:00-12:00 and 13:00-16:00, Fri 8:00-12:00 and 13:00-14:00).


Video on the DESY II Test Beam Facility
(2017, created for the AIDA-2020 Transnational Access program)

NOTE: The Transnational Access (TA) program has been succesfully finished in 2020


The General Acknowledgement

The following note is expected to appear in the acknowledgements of publications based in total or in part on measurements at the DESY II Test Beam Facility:

"The measurements leading to these results have been performed at the Test Beam Facility at DESY Hamburg (Germany), a member of the Helmholtz Association (HGF)".

A similar acknowledgement should be included in conference presentations, proceedings and any other public presentation of your results.

Test Beam Reference

As reference for the DESY II Test Beam Facility the following publication should be used:

”The DESY II test beam facility”  ( https://doi.org/10.1016/j.nima.2018.11.133 )
NIMA, Volume 922, 1 April 2019, Pages 265-28


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