Elettra – Sincrotrone Trieste S.C.p.A. (Elettra) has begun an upgrade program, named “Elettra 2.0”, for the storage ring, and planned a revision of the magnet power supplies for the accelerators that deliver the electrons into the ring. 

 As one of the first steps, Elettra required the design, fabrication, testing, delivery, and acceptance of four 900 A DC Magnet Power Supplies for the dipole magnets of the Booster to Storage Ring Transfer Line.

 Previously, a single power supply delivered all necessary current to the series-connected dipole magnets (or “bending magnets”) in the transfer line, used to route electrons from the source (pre-injector and booster) into the storage ring,

 The new power supplies are going to replace the existing single unit, energizing the magnets individually and allowing greater flexibility in the configuration and use of the transfer line

 OCEM was contracted for this task and has designed the four power supplies according to the demanding technical specification. Each power supply is required to have a DC output of 900 A and 30 V, with a total output power of 27 kW.

 To minimize the downtime and MTTR (Mean Time To Repair) in the event of a failure, the design has been conceived using groups of 3 NGPS in parallel connection (NGPS – High-Stability Digital Power Supply Series – up to 10 kW – OCEM Power Electronics).

 The project is now complete: the power supplies have been built, tested, delivered on-site, commissioned, and switched on at the new Elettra facility.

The four groups of 3 NGPS connected in parallel inside two racks (dedicated PDU – Power Distribution Units, not provided by OCEM, distribute the AC mains to each group).
Photo courtesy of Elettra – Sincrotrone Trieste S.C.p.A. (Elettra)