Program Advisory Committees of GSI

In GSI/FAIR's Program Advisory Committees external reviewers as internationally recognised experts in their fields give advice to the Directorate on selecting experiment proposals to grant beamtime.


General Program Advisory Committee (G-PAC) - an international program advisory committee of GSI, evaluating experiment proposals in the fields of nuclear and atomic physics. This General PAC also acts as umbrella for the different sub-PACs like:

Biophysics & Radio-Biology Program Advisory Committee (Bio-PAC) - evaluates experiment proposals in the areas of biophysics and radio-biology.

Materials Research Program Advisory Committee (Mat-PAC) - evaluates experiment proposals in the area of materials research.

PHELIX and Plasmaphysics Program Advisory Committee (PPAC) - evaluates experiment proposals on plasmaphysics using ions and/or the Petawatt High-Energy Laser for Heavy Ion Experiments (PHELIX).


Information for Users on services and beam time can be found on the Users' Webpages

Call for Proposals for beamtime in 2023/2024

Experimentalists are invited to submit experiment proposals in the framework of FAIR Phase-0, which offers beamtime for experiments at GSI until the start of FAIR. This includes proposals on technical improvements. Scientific experiment proposals will be evaluated by the Program Advisory Committees. The FAIR Phase-0 program will exploit the facilities of GSI, which have been upgraded to meet the requirements as FAIR injectors, plus the FAIR CRYRING storage ring and the PHELIX laser. Moreover, FAIR Phase-0 will be an opportunity to use detectors developed for FAIR.

The present 'Calls for Proposals' to all four Program Advisory Committees are foreseen to offer a total user beamtime in 2023 and 2024 of roughly

  • 350 shifts at UNILAC,
  • 350 shifts at SIS18,
  • 380 shifts at ESR, HITRAP and CRYRING,
  • 100 shifts at PHELIX.

Proposals must be submitted by 30th of June 2022 (30th of June for Mat-PAC) - Submission is closed!

For details on the different Program Advisory Committees please refer to their individual websites given above.

Submission of Beamtime Proposals

From 2021 on, submission of beamtime proposals is done via the platform GATE (General Access Tool to the Experimental infrastructures of GSI). With a personal or GSI web-login users can submit proposals as Proposers, organize the experiment on site (Responsible Experimentalist) or participate in an experiment on the campus (Experimentalist).

Login to GATE at:

GATE Short Manual for Users: here.

Links zu Short Manuals for GATE for different roles in GATE are given here, and are linked in GATE, visible only  for the respective roles User, Internals, Referee.

GATE Short Manual for Users: here.

GATE Short Manual for Internal GATE User: here.

GATE Short Manual for Referees: here

GATE Glossary: here


Next PAC Meetings

Date of the next Meeting of G-PAC:  September 28-30, 2022

Date of the last Meeting of Mat-PAC: September 20-21, 2022

Date of the next Meeting of Bio-PAC: September 26-27, 2022

Date of the next Meeting of PPAC: September 12-13, 2022.


PAC Scientific Secretaries


Dr. Manuel Vogel

GSI, Darmstadt

Phone: +49-6159-71 2046

contact by E-Mail to: M.Vogel(at)



Dr. Karin Füssel

GSI, Darmstadt

Phone: +49-6159-71 1441

contact by E-Mail to: PPAC-Secretary



Dr. Ina Schubert

GSI, Darmstadt

Phone: +49-6159-71 2033

contact by E-Mail to: I.Schubert(at)



Dr. Karin Füssel

GSI, Darmstadt

Phone: +49-6159-71 1441

contact by E-Mail to: Bio-PAC-Secretary


Users Mailinglist

Through the mailinglist of our users information will be spread on, e.g. on calls for beam time applications, on calls for contributions to the yearly scientific report, on the yearly summer student program, etc.

For registering to this mailinglist please click here. If you do not own a password for Listserv yet, please get one under this link and confirm it upon reception of the respective E-mail. This password is valid for all Listserv mailinglists to which you are subscribed. Once you have a password, please login to register to the users mailinglist (as regular subscriber). You will receive an E-mail with a link to confirm your registration. Upon finalization of the registration process you will receive a confirmation mail, incl. a link where in thre future you can remove your contact from the mailinglist yourself. For removal from the mailinglist, you can also contact Karin Füssel.

For information on mails sent to the users' mailinglist in the past you can check its archive.


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