Call for Proposals for beam time in 2024/2025

FAIR Phase-0

Call for Experiment Proposals at PHELIX

We hereby invite you to submit experiment proposals in the framework of FAIR Phase-0 for the high-energy/high-power laser PHELIX. Subject of this ‘Call’ are experiment runs in the time between autumn 2024 and summer 2025. The ‘Call’ is open until November 07, 2023.

Experiments at our laser facility Petawatt High-Energy Laser for Heavy Ion EXperiments (PHELIX) cover a variety of research fields, e.g. atomic physics, plasma physics, extreme matter physics, laser-particle acceleration. In the present call, experiments with the laser are accepted and a total of approx. 170 shifts of PHELIX beamtime can be offered corresponding to roughly 8 to 9 experiments. This call does not include experiments with ions!

Experiments granted before 2021 have to be submitted in an updated version and will be re-evaluated by the PPAC.


Time Schedule & Evaluation

The ‘Call’ for beamtime proposals is open until November 07, 2023.

Should questions on technical feasibility, safety issues etc. arise after the submission, our staff will contact the spokesperson (proposer) by E-mail to clarify these points before the advisory committee meeting. In their meeting on February 5-6, 2024, the PHELIX and Plasma Physics Program Advisory Committee (PPAC) will discuss the received proposals with a clear focus on scientific excellence and strategic issues. Should questions arise in those discussion the proposal’s spokesperson will be asked to response within days. Accordingly, the PPAC will formulate their evaluation and recommend granting beamtime to the proposed experiments to the directorate. Experiments granted([1]) in this round will run in the above-mentioned period. Granted shifts will expire after this period.


Application Procedure

Processes of user beamtime are managed in the platform GATE: “General Access Tool to the Experimental Infrastructures of GSI”. Here, registered users can see for example all their proposals and experiments - unsubmitted, active and finished ones – and get information on their open tasks, on which they are informed also by Email.

Weblink to GATE:

Note: All participants of a proposal need to register([2]) in GATE, mark in their settings that they agree appearing in other users’ search results, and need to be included in the proposal as so-called Co-Proposers. Information on all participants of a proposal is urgently needed for statistics given to our funding agencies as justification for running our facilities.

Proposal Submission:

Editing a proposal can be interrupted at any time and continued later. Please follow the instructions in the system and in the short GATE manual carefully. The proposal text to be uploaded is to be structured as explained under: Should you encounter any problems, please contact GATE-Help(at)

We urgently ask you to consult your Link Scientist (to be chosen in form “Technical requirements”) on your entries in the forms and on details of your planned experiment well before submitting the application (e.g. one month before deadline): After submission, correcting your request is not possible. Please consider that close to submission deadline the Link Scientists might not be available.


Please note that GSI does not cover the consumables and investments necessary for running an experiment.


For additional or updated information, please consult the web page of PPAC ( and its sub-page “Info PHELIX”. Further details on the process from application until running the experiment are given here:

Applicants eligible to the European funding program 'Laserlab-Europe' are encouraged to submit a funding applications additionally to Laserlab-Europe ( for obtaining financial support. Indicating during proposal submission your interest in this funding serves as internal information only and does not replace a dedicated funding application at Laserlab-Europe. Note that Laserlab offers financial support for researchers from Europe, and for users from non-EU countries to some extent.


Technical Information & Contacts

PHELIX can provide access for laser experiments in the PHELIX hall, and alternatively at the Z6 target station at UNILAC and at HHT at SIS18. For information on current PHELIX and experimental parameters, please refer to or contact the respective person responsible for the target station of interest:

petawatt target area (PTA): V. Bagnoud (v.bagnoud(at), P. Neumayer (p.neumayer(at)

x-ray laboratory:  V. Bagnoud (v.bagnoud(at), P. Neumayer (p.neumayer(at)

Z6 target area: A. Blazevic (a.blazevic(at), D. Schumacher (de.schumacher(at)

HHT target area: P. Neumayer (p.neumayer(at)


Further contacts:

Details on the laser and laser diagnostics: Vincent Bagnoud (v.bagnoud(at);

Access and support through Laserlab-Europe: Diana Lang (d.lang(at);

PPAC Scientific Secretary: Karin Füssel (k.fuessel(at);


[1] Beamtime is granted at no charge within the framework of the Helmholtz Association: “Rahmenrichtlinie über die Nutzung von Forschungsanlagen der Helmholtz-Zentren durch Dritte” (1.3.2000), §II. 1.2. GSI/FAIR need to report to funding agencies on user operation and user communities in form of statistical data.

[2] General Data Protection Regulation GDPR (according to Art. 13 and 14 DSGVO): Staff Management Board GDPR english