High Performance Power Supplies
  • 3 Cyclotron Power Supply
    Driver Amplifier
  • 4 MOSAIC System
    Modular CIME HPPS
  • 2 RF Final Amplifier
    Anode Power Supply
  • 1 Transformers
    Resistors
  • 5 High current rectifier
    7V – 6500A

NEWS

23/04/2012

Job offer : Offer

21/02/2012

JEMA was involved in the project of the Vega Launcher which first launch successfully took place on February 12th. As a partner of SABCA (leading Belgian Aerospace company), the responsible of the thrust Vector Control System, JEMA is proud to announce that we were congratulated for our participation in this major event!

12/02/2012

JEMA has just been awarded - jointly by the CNRS and CERN - by the contract for the manufacturing of the 14 Klystron Modulators of the new CERN linear accelerator LINAC4. LINAC4 will replace LINAC2 as primary injector of the LHC which will eventually yield to an increase of the LHC performances. On a longer term, LINAC4 is also intended to serve as the first part of a high-power Superconducting Proton Linac.

19/12/2011

Merry Christmas and best wishes for 2012 from all the team of JEMA

17/11/2011

JEMA has received several major orders :

-CEGELEC(Belgium)

5 cabinets battery charger for export

-SHI(Sumitomo Heavy Industries - Japan)

4 supplies to equip a particle accelerator (RF final amplifier, RF drive amplifier, ION source, Harmonic coil)

-IBA has gratified us with an order for multiple DC power supplies to equip in 2012, the accelerator and a part of the Beam Proton Therapy center line of Dimitrovgrad in Russia.

03/10/2011

On September 30, the contract for the development and manufacturing the new Power converter for the Dipole D3D3P of the GANIL (Grand Accélérateur d'ions lourds) in Caen (France) has been awarded to JEMA

A long road from transformers to high performance DC power supplies


Founded in 1937 in Brussels (Belgium) the company JEMA first specialised in the production of coil-based products such as transformers and resistors. JEMA then turned very quickly to specific coil-based products fully adapted for the particular needs of its clients.

With time and the evolution of electrical components, JEMA evolved towards the production of electric cables with complex topologies based on its coil-based products.  From then on, production has been directed towards rectifiers, inverters and even battery chargers. Finally, thanks to its growing mastery of electromagnetism and associated technology, JEMA has specialised in power electronics intended principally for direct current applications.

The end of the 70s marks an important turning point in the company's history. It was at this time the JEMA studied, developed and supplied the various power supplies required by the particle accelerator in the Centre de Recherche du Cyclotron at the Université Catholique de Louvain-la-Neuve (CRC-UCL). From that moment on, JEMA has definitively specialised in the development of high performance power supplies.

In 1990, JEMA relocated to the Louvain-la-Neuve science park. This move allowed it to be close to centres of excellence like the faculty of applied sciences and the CRC and thus to breathe new life into the development of its high performance products. It also allowed JEMA to move closer to one of its principal clients, a global leader in the development of particle accelerators and proton therapy systems.

Currently, activities linked to high performance power supplies represent 75% of JEMAs revenues.  Power supplies produced under the name JEMA or JEMA ELEC are installed in numerous research centres, medical institutions and leading industrial companies around the world.

In 2008, the Belgian private equity company JEMA declared its desire to reposition itself internationally as a major player in the field of high performance DC power supplies. To this end, its team of experienced engineers has been given a boost with new resources which contribute daily to the improvement of its systems, the development of new products and the expansion of JEMAs range of services. 

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