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The linac is equiped with two identical modulators, supplying two
klystrons with the power necessary for the two 6 meters accelerating sections,
and for the buncher.
The klystrons are multicavity amplifiers.
The two modulators are “line type”with a Pulse Forming Network (PFN)
short circuited by a thyratron through the primary of a pulse transformer.
The
secondary of this transformer supplies the klystron cathode with a 280kV pulse.
Klystron Heating : In economy mode (standby), the voltage is reduced by 20%.
The heating
time is 15mn (cold cathode) or 7 mn (economy mode).