PARTICLE ACCELERATORS


The technological knowledge and the references acquired over the years, combined with a business vocation always devoted to the development of highly customized solutions, makes, EEI the ideal partner for the realization of power systems in the fields of BIG SCIENCE.

EEI design and manufacture a complete range of Power Supplies for magnets to be used in particle accelerators. They are available in different solutions: free-standing cabinet or 19” rack unit.

EEI power supplies find multiple applications in the fields of scientific research and medicine for cancer treatments, specifically in hadrontherapy.





DMPS

For the power supply of dipole magnets of big size in the field of particle accelerators, EEI designed and built converters of EEI-DMPS series. EEI-DMPS series power supplies offer the very high precision features that characterize the drives manufactured by EEI for physics sector, with the ability to provide a highly stabilized output current up to 4000A +- 1500 V in a modular cabinet.

Main application

  • Dipole magnets for particle accelerator

In their standard version cabinets have a DC-link busbar fed by a AFE (regenerative inverter) rectifying stage.
DC output stage is composed of IGBT boosters with modular architecture, in order to enable a better energy quality output. For a further reduction of output voltage ripple, linear regulation stage is available upon request.

OPTIONS

  • Active Front End/ Diode-Thyristor bridge rectifier
  • Multipulse input
  • Dynamic breaking module
  • Increased DC-link capacitor bank size
  • Output crowbar
  • Earth fault detection circuit
  • Customer regulation boards
  • Customer transducers
  • Local/remote control

CMPS

For the power supply of magnets of larger size in the field of particle accelerators, EEI designed and built converters of EEI-CMPS series.
EEI-CMPS series power supplies offer the very high precision features that characterize the drives manufactured by EEI for physics sector, with the ability to provide a highly stabilized output current up to 4000A in a single cabinet.

Main application

  • Dipole, quadrupole and sixsth-pole magnets for particle accelerator
  • Ultra high stable laboratory magnets

EEI-CMPS : Cabinet Magnet Power Supplies

For Higher output currents EEI can offer cabinets of EEI-CMPS series: power supplies belonging to this series are equipped with the main drive and with all the electromechanics for protection and disconnection.
In their standard version cabinets have a DC-link busbar fed by a SCR rectifying stage: upon request solution with IGBT regenerative inverter.
DC output stage is composed of IGBT boosters with modular architecture, in order to enable a better energy quality output.
For a further reduction of output voltage ripple, linear regulation stage is available upon request.


SMPS

Dynamics and precision characterize the best of EEI’s low voltage power supplies, the power supplies for the scanning magnets, which provide very high performance for the “VOXEL” and “PAINTING” functions required in oncological hadron therapy applications.

EEI-SMPS : Scanning Magnet Power Supplies

A set of 4 quadrant power supplies, 600A-600V in switched mode was designed and delivered in 2015 to EBG MED AUSTRON. The power supplies feed the scanning magnets, support the “VOXEL MODE” and “PAINTING MODE” functions with variable current ramps, complete excursions of the voltage set in 30 µs and stabilization of the current flap top in less than 200 µs.


RMPS

Drives of series EEI-RMPS are the most reliable and effective solution for the power supply of magnets used in particle accelerators for physics research and medical application EEI drives supply DC output current with extraordinary precision and stability, to ensure proper functioning of research equipment.

Main application

  • Corrections magnets for particle accelerator
  • Ultra high stable laboratory magnets

EEI-RMPS series
EEI-RMPS series power supplies are based on a 19” rack architecture that ensure an easy installation, inspection and maintainability of equipment. Each unit is composed by a rectifying stage for the power supply of a H-bridge converter. DC-link is equipped with proper thin-film filter capacitors for an improved energy stability output. The additional output filter improves current stability. Output current is measured through high precision embedded DCCT-DC or through external probes EEI-RMPS series drives can be assembled together in a cabinet that includes incoming line section together with auxiliaries and unit monitoring and control. Connection to the main cabinet is made with fast connectors for a simpler and more reliable joining.


SPECIAL PROJECTS

The technical staff and R & D are perfectly able to support clients in the development of special drives for the physical sector, competently and effectively, providing the best solution for every problem.
The structure and the flexibility of EEI allows maximum customization of its systems.

The main technical features that systems EEI for the field of Physics and Research fails to meet are:

  • Current ratings up to 20000
  • Rated power up to 3MW
  • Ripple current of less than 5ppm
  • Resolution: up to 5ppm
  • Repeatability of output current: up to ± 2.5ppm
  • Technology: IGBT, MOSFET, SIC

COMPLETE PRODUCT CUSTOMIZATION

The EEI team is always available to provide tailor-made solutions based on technical specification requested.

EEI also has the ability to integrate control cards and transducers developed by its customers into its systems.

Customizations:

  • Active Front End/ Diode-Thyristor bridge rectifier
  • Multi-pulse input
  • Dynamic breaking module
  • Increased DC-link capacitor bank
  • Output crowbar
  • Earth fault detection circuit
  • Local/remote control
  • Others on request