The MYRRHA project introduced by SCK-CEN (Belgium) proposes the installation, on its site of Mol, of a system ADS (Accelerator Driven System) intended for the studies and  the demonstration of the transmutation of the High Level Nuclear Waste. At first, within the framework of the European projects EURATOM (FP7 and H2020) and for the past 3 years with direct contracts with the SCK. ACS is actively taking part in the high-intensity-proton accelerator studies. It is particularly involved in the field of the superconductivity and associated cryogenic systems.

Activities 2017/2018

Technical support on general aspects of the project: cost estimate of investments and of functioning.

Study of industrialization for the elements of the LINAC linked to cryogenic systems and to cavities.

Thesis on the development of the artificial intelligence dedicated to particle accelerators.

Modelling of “Spoke” cavities for the optimization of the control system.

Studies of valve boxes for the prototype of the “Spoke” cryomodule – Specification and Design.

Prototype :


FREIA is an infrastructure of test situated in Uppsala, Sweden. FREIA is equipped with RF sources and dedicated diagnostic equipment, helium liquefier, 2 K cryostats, pumping systems, test areas in a 1000 m ² experimentation hall.

The horizontal test cryostat -HNOSS- is used for the test of superconducting cavities for the ESS (European Spallation Source) accelerator in Lund. Since 2012, ACS worked on the design studies of the horizontal test cryostat HNOSS. Having assured its production monitoring, the cryostat was installed at the end of 2014. In 2018, a new vertical cryostat – GERSIMI – was installed in Uppsala in cooperation with the ACS team, responsible for commissioning tests : installation, cooling down, command & control tests

HNOSS : Horizontal cryostat for the test of superconducting cavities
Gersemi installation
Gersemi magnet insert


FRIB is an installation dedicated for the production and the use of rare isotope beams , situated in the university of Michigan State.


ACS developed for MSU the cryogenic and mechanical design for typical FRIB FSQ5 Q-poles (Dewar Box)

This study was realized at the end of 2017 and included the details drawings as well as the calculation notes.


Within the Framework Contract (reference F4E-OFC-433) “Integration Design of Diagnostics into the ITER Ports”, different management and engineering services are required and will be performed by IDOM as the main contractor. The work to be developed by ACS, as a subcontractor, concerned the “Electromagnetic (EM) Studies for the Integration Design of Diagnostics into the ITER Ports”.

During the first contract covering the period from October 2014 to March 2016, ACS developed EM analysis activities to assess the methodology, initially proposed by F4E, to analyze the modeling feasibility and to perform different benchmarking tasks.

During the second contract covering the period from April 2016 to end March 2017. ACS achieved detailed EM analysis for 5 Diagnostic Ports in order to reach an intermediate maturity level called Preparatory Design. The last project phase is part of the F4E specific contract SC04. It consists to continue the calculation on the 5 Diagnostic Ports until reaching the Preliminary Design Review (PDR).

Locations of the Diagnostic Ports (Upper Equatorial and Lower)
Magnetic field in EP01 Equatorial diagnostic Port, inside ITER

European program - topic NFRP-09-2015

European program from October 01st, 2016 to 31 March 2019-topic NFRP-09-2015

MYRTE project is coordinated by SCK.CEN. The consortium includes 27 European organizations including Research Institutes, Universities, and industries.

Having participated in the European projects MAX and MARISA, ACS contributes to the project MYRTE on 3 particular subjects:

  • Test of Spoke cavities in the Institute of Nuclear Physics of Orsay: preparation of cavities, cryogenic tests and result analysis.
  • Cost estimation for the construction of the MYRRHA LinAc.
  • Contribution to the design and the preliminary study of the cryogenic control systems.


The market fits within the framework of the agreement of collaboration signed on April 25th, 2015 between CEA (ATOMIC ENERGY COMMISSION) and Soreq Nuclear Research Center in Tel Aviv (Israel) for the realization of phase 2 of the accelerator project SARAF.

Soreq Nuclear Research Center is an entity of the IAEC (Israeli Atomic Energy Committee(Commission)) and is situated in Yavne (Israel).

According to the terms of this agreement, CEA (ATOMIC ENERGY COMMISSION) was responsible for the design, the realization and the assembly of this accelerator. ACS and AITR won in December 2017 all design studies of the ECTS cryostat for the SARAF accelerator.

Vertical Cryostat

July 2017

The contract consisted of the realization of the vertical test cryostat and of the final assembly of all the components. ACS was in charge of developing the assembly files and instrumentation for the vertical cryostat for SPOKE cavity test as well as the production monitoring.

From Design Validation ...
... to Production

European Spallation Source

ESS (European Spallation Source) is under construction in the city of Lund, Sweden. ESS will have a powerful accelerator of protons. In the beginning of 2022, the first instruments will be put into service.

In May 2018, ACS, in association with AITR, won a contract for the manufacturing follow-up and technical consulting for the production of 13 valves boxes for the cryogenic SPOKE section of the LINAC.

Valve Box (section view)
SPOKE ESS section