DC and Ramp Magnet Power Supplies
In a particle accelerator, a large number of electromagnets are used to guide,
bend, focus, and steer the beam of charged particles. Various types of constant
current magnet power supplies are required, such as DC or slow varying, ramping
and bipolar power supplies. The requirements of a power supply for these
electromagnets are quite different from conventional DC power supplies. The
power supplies are output current controlled, magnetic field being directly
proportional to the current. Load to the power supply is highly inductive. The
power supply converter should have wide conversion range for wide variation in
output current. The output current stability specification is very stringent
including short-term stability, long term stability and ripple.
A large number of power supplies have been developed for electromagnets of
Indus-1 (450 MeV SRS), Indus-2 (2.5 GeV SRS) and other applications.
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