General Program Advisory Committee (G-PAC)
The General PAC is an international program advisory committee of GSI and FAIR with external experts as members. The General PAC gives advice to the Directorate on selecting experiment proposals that are submitted by individual users or user groups in the areas of nuclear and atomic physics, currently for the FAIR Phase-0 program. Following periodic calls for proposals, the General PAC meets to evaluate those experiment proposals on the basis of scientific merit and technical feasibility and with regard to the GSI/FAIR strategy, and makes recommendations on the amount of beam time to be allotted by the directorate. The G-PAC also acts as umbrella for the different sub-PACs of GSI/FAIR for various research fields.
Call for proposals for experiments at CRYRING in 'standalone' mode in 2025
We are issuing a call for beamtime proposals regarding physics within FAIR phase 0 at the CRYRING in standalone mode, i.e. with use of internal ion sources only. This beamtime is foreseen for a period within April to June 2025, with an expected total of around 180 shifts of 8 hours each.
After successful commissioning and first experiments in 2024, CRYRING is currently transitioning towards regular operation. In 2025, instrumentation and machine performance on a similar level as in 2024 can be expected, i.e. ion beams will be injected still from the existing 10-GHz ECR ion source. To guide the proposers with expectation values, an overview table of beam parameters from past beam times is given at
For the present call, proposals will be collected by the CRYRING coordinator Michael Lestinsky before August 30th 2024 and discussed at the annual meeting of the SPARC collaboration (21th SPARC Topical Workshop, September 6-10, Münster, Germany) before invited submission via the GATE system can take place in September 2024. Submitted proposals will then be evaluated by an external board of experts, results are expected by the end of November 2024. The guidelines for proposals are identical to those for the G-PAC and can be found on
https://www.gsi.de/g-proposal_structure
please take note of the six-page limit. Future regular calls for beamtime at CRYRING in standalone mode for 2026 and beyond are planned on a yearly basis.
Participants with Russian or Belarussian affiliation are currently exempt from proposing and participating in experiments at GSI/FAIR.
GATE platform
Since 2021 we are using a new platform for proposal and user management: The General Access Tool to the Experimental facilities of GSI / FAIR (GATE).
Registration to GATE under: https://gate.gsi.de.
GATE Short Manual for Users: here
Registration in GATE is possible independant of an open 'Call' at any time and registered users will be informed on new 'Calls'. So it is advisable for interested users to register any time.
All (!) participants of a proposal and experimentalists coming on-site for the experiment need to be registered in GATE (and allow being visible for other users' search in GATE).
Members of the G-PAC
- Sydney Galès (Chair)
IPN Orsay, France
- Toshiyuki Azuma
Riken, Japan
- Jana Bielcikova
Nuclear Physics Institute, The Czech Academy of Sciences, Czech Republic
- Yorick Blumenfeld
IPN Orsay, France
- Philippe Crochet
LPC, Clermont-Ferrand, France
- Paul Greenlees
University of Jyväskylä, Finland
- Magda Kowalska
CERN, Switzerland
- Witold Nazarewicz
FRIB/MSU, USA
- Marek Pajek
Jan Kochanowski University, Kielce, Poland
- Marina Petri
University of York, UK
- Thomas Pfeifer
Max-Planck-Institute for Nuclear Physics, Heidelberg, Germany
- Achim Schwenk
Technical University Darmstadt, Germany
- Tomohiro Uesaka
RIKEN, Japan
- Eberhard Widmann
Stefan Meyer Institute for Subatomic Physics, Vienna, Austria
G-PAC Scientific Secretaries
Next G-PAC Meeting
Date of the next G-PAC Meeting: to be announced
Recent G-PAC Meetings
G-PAC45 on September 28-30, 2022: documents of the meeting (for G-PAC members only)
G-PAC44 on August 26-28, 2020: documents of the meeting (for G-PAC members only); Public Agenda
G-PAC43 on September 19-21, 2017; Public Agenda
G-PAC42 / All-PAC in December 2015 (in writing)
G-PAC41/All-PAC on April 17, 2015
G-PAC40 on November 23/24, 2011
G-PAC39 on November 2/3, 2010
G-PAC38 on April 20/21, 2010
G-PAC37 on October 20/21, 2009
All-PAC01-Meeting on October 21, 2009
User Services
Information for Users on services and beam time can be found on the Users' Webpages.
Central point of contact for associated guests and users on campus is the Welcome Office.
General Data Protection Regulation GDPR (according to Art. 13 and 14 DSGVO): Staff Management Board GDPR english
