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Apply for privileged beam time

Privileged access to high energy X-rays is open to Swedish universities, research organisations and companies for open research. This privileged access is enabled by The Swedish Research Council's (VR) investments in PETRA III, Hamburg which is operated by DESY (Deutsches Elektronen Synchrotron).

DESY clock

Privileged time

Sweden’s privileged access amounts to 5 300 hours of measurement time at PETRA III, Hamburg. These hours can be allocated between different measurement stations. The upper limit of Swedish privileged access is 70% of the total user time at the P21 beam line, and 20% of the total user time at PETRA III's other DESY-operated beamlines.

Some priviledged beam time has been reserved to educate existing and new users of the beamline, develop experimental environments and enable more industry access. (The educational programme is under development and will be published soon on this CeXS education page.)

To gain access to PETRA III, it is necessary to submit a beam time proposal, with Swedish proposals qualifying for privileged access. To be eligible for privileged access, the leader of the beam time project proposal must be affiliated to a Swedish university, research organisation or company. A particular Swedish project proposal then competes with other Swedish project proposals for allocation of privileged beam time access (knocking out slightly higher ranked non-Swedish proposals).

Swedish proposal success rates were greater than 55% in 2019, up almost 20% from autumn 2018.

Apply for privileged access in the DOOR system

Apply for privileged access at DOOR by submitting a beam time proposal if you will publish measurement results.

Procedure for project proposals

The call and review of project proposals is managed by DESY and the stages in their procedure are as follows.

  1. Researchers who are interested in making a proposal must register in the Door system
  2. The Door system then informs registered users when calls are open, provides call information, deadlines and measurement access periods as well as describes the format and criteria for project proposals
  3. Researchers prepare their consortium and project proposal, included their requested beamline and measurement setup, and submit the proposal in the Door system. NOTE. It is important to tick the box "Swedish proposal eligible for privileged access" and the Project Leader must be affiliated to a Swedish organisation
  4. Every proposal, both Swedish and non-Swedish, is then individually evaluated by DESY's Proposal Review Pannels. Evaluations of each proposal are made, based on scientific excellence and project feasibility. Project feasibility includes an assessment of the consortium’s competences in using synchrotron X-ray facilities
  5. Using the evaluation results, by beamline, project proposals are ranked for beam time access, with the cut-off based on the available hours at the particular beamtime.  
  6. asibility includes an assessment of the consortium’s competences in using synchrotron X-ray facilities
  7. Swedish proposals which don't gain privileged access then have a second chance: at each beamline Swedish proposals just below the cut-off basically knock out non-Swedish proposals above the cut-off until all the priviledged access hours are used.

Standard calls are made twice per year, with deadlines typically being 1 March and 1 September.

CeXS protects Swedish interests by i) collecting data about Swedish submissions ii) verifying eligibility for Swedish priviledged access as well as iii) observing the allocation of Swedish priviledged access. Subsequently, we iii) collect data about actual a) Swedish use of all PETRA III beamlines and b) all use of the P21 beamline branches at PETRA III.

Belongs to: Center for X-rays in Swedish Materials Science (CeXS)
Last changed: Apr 01, 2022