DIAMOND STORAGE RING DIPOLE

Particle – Diamond Particle – Diamond Storage Ring Dipole PS

Main characteristics:

Maximum current rating 1500 A

Nominal voltage rating 531 V

Current control range 50-1500 A

Current resolution 18 bit = 3.81ppm (f.s.)

Current accuracy ± 50 ppm ( + 75 mA)

Current ripple  < ± 10 ppm (± 15 mA)

Current reproducibility ± 10 ppm ( ± 15 mA)

Technology Modular, IGBTs

Other features Hot swap; Redundant

Main features

11 kV power distribution system and will require a step-down transformer, which is part of the contract. The step-down transformer must be oil cooled and housed in an outdoor transformer pen. The other power converters will be fed at 400 V.

For the storage ring dipole magnet power converter reproducibility is defined as the difference between the load current measured with an independent current transducer after 8 hours operation and the same load current measured one hour after the resumption of operation following a 16 hour break. The control and measurement electronics may remain energised throughout the period.

Resolution is defined as a change in the input reference signal that is followed by the output current.

Current ripple is defined  as the peak-to-peak variation in the output current at frequencies from 5 Hz to 10 MHz, with a dc output current. The ripple must be achieved over the full current control range for the storage ring dipole power converter and up to the maximum dc output achievable with the booster power converters.