27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

A novel digital magnet power supply approach

28 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m H2 - Power Supplies and Flux Pumps Mon-Af-Po1.12


Enrico Braidotti (CAEN ELS s.r.l.)


Programmable logic and integrated technologies, as SoC, FPGA and DSP, have became mature enough to be employed in high performance magnet power supply applications. The use of a configurable mixed current and voltage digital control, combined with adaptable complex algorithms for protections (e.g. quench in superconducting magnets) and auxiliary integration (e.g. transverse flux density in a dipole gap) allows obtaining the perfect fit for each specific magnet application. An entire series of power supplies, coming from a background of particle accelerator applications, has been developed for both bipolar and monopolar operation with high bandwidth (fast fields as in corrector magnets and steerers) and high adaptability with a user-friendly interface and an embedded Linux OS that allows users to implement their own applications directly on the power supply. The use of 24-bit Analog-to-Digital converters and state-of-the-art PWM generation (with possible application of dithering techniques to reach 60-65 ps resolution) enables to obtain fields actuations in the ppm-level range. Some power converters, for specific applications (usually dipoles or superconducting), are equipped with closed-loop zero flux transducers that feeds their signals to temperature-stabilized electronics to reach current temperature coefficient values of 1 ppm/K.

Submitters Country ITALY

Primary authors

Jan Marjanovič (CAEN ELS s.r.l.) Denis Molaro (CAEN ELS s.r.l.)


Enrico Braidotti (CAEN ELS s.r.l.) Mitja Guštin (CAEN ELS s.r.l.) Joachim Theiner (CAEN ELS s.r.l.)

Presentation Materials