Infrastructures and Transnational Access (TNA)

ChETEC-INFRA is happy to provide transnational access to the 13 infrastructures networked in the project. New and outside users are especially welcome!

Monthly TNA event (Zoom)

You are invited to attend our monthly TNA event on Zoom, which features one of the ChETEC-INFRA facilities and allows users to ask any question they may have on transnational access.

The first two TNA events presented:

The third edition of this event is scheduled for Monday, 25.10.2021, at 15:30 (Brussels time) and will feature a presentation of the IANAO Rozhen Observatory, as well as a general overview on transnational access and time for questions and answers.

Brief definition of transnational access (TNA)

Transnational access by scientific users

  • crosses national borders (i.e. users must use an installation located outside the country where they work),
  • is free of charge to the users (access fees to the facilities are paid by the European Union),
  • may include travel support for the users, again funded by the EU,
  • should generally foresee to publish the scientific results,
  • is open to scientists of all nationalities and based in all countries (with limits on the amount of access given to users outside the EU and associated countries),
  • is allocated by an independent user selection panel, solely based on scientific merit.

Details on the transnational access scheme are shown in this presentation (4 May 2021). The detailed eligibility and scoring criteria are given on this page.

Facilities offering access

Facilities with transnational access include Astronuclear Laboratories (), Astronuclear High-Performance Computing () and Astronuclear Telescopes ():

Felsenkeller underground ion accelerator (Dresden, DE)

5 MV Pelletron accelerator for nuclear cross section measurements in a shallow-underground laboratory, shielded from cosmic radiation.

Pelletron-Beschleuniger im Felsenkeller-Labor (Credit: HZDR/André Wirsig)
(Credit: HZDR/André Wirsig)


State-of-the-art AMS facility with a 6 MV tandem accelerator, dedicated AMS beamlines and dedicated ion sources.

Accelerator Tank for DREAMS at HZDR
(Credit: Oliver Killig/HZDR)

Vienna Environmental Research Accelerator (VERA)

Dedicated facility for AMS based on a 3-MV tandem accelerator, with a scientific focus on the advancement of ultra-trace analysis of long-lived radionuclides.

(Credit: P. Steier)

IANAO Rozhen observatory

Observational facility located in Rodopa mountain, with three telescopes for optical observations of comets, asteroids, stars, star clusters and galaxies and a telescope for observations of the Sun.

(Credit: IANAO / Pencho Markishki)

The Perek 2-m Telescope at ASU in Ondřejov

Telescope located south-west of Prague, equipped with a single-order spectrograph and an echelle spectrograph.

(Credit: Zdeněk Bardon)

Nordic Optical Telescope (NOT)

2.56m telescope owned and operated in collaboration at the Observatorio del Roque de los Muchachos (La Palma, Spain).

(Credit: Bob Tubbs)

Frankfurt Van de Graaff accelerator

Accelerator facility for proton or alpha beam at 1 – 2.5 MeV, with the capability of neutron production via 7Li(p,n).

(Credit: Christian Schwarz)

PTB Ion Accelerator Facility (PIAF)

Facility with two low-energy ion accelerators, a variable-energy isochronous cyclotron and a tandetron, providing DC or pulsed beams for time-of-flight experiments.

(Credit: PTB)

FN Tandem accelerator at the University of Cologne (UoC)

10 MV FN tandem accelerator for nuclear physics and astrophysics research, connected to a fully-equipped target laboratory.

(Credit: Uni Köln/IKP)

Cyclotron of the Atomki Accelerator Centre

MGC-20 cyclotron capable of proton, deuteron, 3He and alpha beams.

(Credit: Atomki / Tamás Szücs)

Molėtai Astronomical Observatory (MAO) of Vilnius University (UNIVIL)

Observatory with a 1.65 m Ritchey-Chretien telescope with VUES spectrograph, located 70 km north of Vilnius.

Tandetrons of Institutul National de Fizica si Inginerie Nucleara “Horia Hulubei” (IFIN-HH)

Facility with three tandem accelerators for nuclear astrophysics and AMS, and connected target laboratory.

Viper HPC facility at the University of Hull (UHULL)

High Performance Compute (HPC) cluster with compute, GPU and high-memory nodes.

Call for Proposals

Proposals can be submitted through the GATE server. Calls for proposals open every three months. The currently open call for proposals will close August 17, 2021 and covers user time at the facilities from December 2021 to February 2022.

How to Apply

Details on eligibility and the application process can be found here.