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  • Aarhus University
  • ISA, Aarhus University, Ny Munkegade 120, Building 1520
  • DK-8000 Aarhus , Denmark
  • Visit ASTRID2 Website »
  • Tel. +45 871 55593
  • Fax. +45 8612 0740




The call for proposals for beam time in 2018 is now closed.

However if you are interested in applying for beam time on one of the ASTRID2 beam lines, then it may still be possible.

Please read the information contained in the link below and contact the relevant beam line scientist to see if there is time available. 


Please visit the ISA website for more information.



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ASTRID2 is the new third-generation low-emittance light source at Aarhus University, Denmark. Commissioned in 2013, the new facility provides state-of-the-art high-brilliance light from the low-emittance electron beam, operating in top-up mode to give an infinite beam lifetime.


The ASTRID storage ring was a second generation synchrotron radiation source, which started operation in the early nineties and is now used solely as a booster for the new ASTRID2 ring. Many of the beam lines from ASTRID have been upgraded and transferred to ASTRID2 and two completely new beam lines have been designed and are in the construction phase.


Photons are available from the infrared to soft x-ray regime, and beam lines and end-stations cover use in areas from biology to physics. Techniques include, for example, linear/circular dichroism for molecular biology and angular resolved photo emission spectroscopy.


The ISA laboratory, which amongst other things operates the ASTRID2 facility, is part of Aarhus University. Around 150 scientists use the light source annually with about half coming from abroad. A user selection panel assigns beam time to selected proposals once per year, based on scientific merit.

Storage ring specificationsASTRID2ASTRID
Energy [GeV]0.580.58
Current at top-up/Current [mA]200200
Circumference [m]45.740
Number of bending magnets124
Number of straight sections of use41
Operative beamlines57
Beamlines under construction20
Average beam lifetime [h]top-up> 100
Energy loss per turn (without IDs) [keV]68
Beam size in insertion device [μm]30 vert. x 200 horz.100 vert. x 2000 horz.
Beam size in bending magnets [μm]80 vert. x 100 horz.100 vert. x 2000 horz.
last update by ITELETTRA on 2/21/2018 6:05:16 PM



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