Power Supplies for Precooler Ring Page: 1 of 12
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7 Note No. 106
December 12, 1980
Power Supplies for Precooler Rin
Raymond Fuja and Walter Praag
light power supplies will energize the antiproton Precooler
ring. There will be two series connected supplies per quadrant.
These supplies will power 32 dipole and 19 quadrupole magnets.
The resistance and inductance per quadrant is R - 1.4045 Ohms and
L - 0.466 lenries. Each power supply will have 12-phase series
bridge rectifiers and will be energized from the 480 V 3-phase
The total of eight power supplies are numbered IA, IIA,
IIIA, IVA, and IN, II, 1III, and IVE. Each quadrant will
contain one "A" and one 02" supply. A block diagram of the
Precooler ring with its power supplies is shown in Fig. 1.
1. Colinm yeC e
During the cooling cycle, Fig. 2, only the "A" supplies will
be used. The RBM supplies will be bypassed.
1.1 94 A (0.2 GeV) Flattop (Bunch and transfer to ECR)
The injection current level of 94 A, (0.2 GeV) (8.2% of
peak current), requires a voltage of 130 V, (8.9% of
peak voltage), per quadrant. This level can be
maintained by either charging the power supply filter
capacitors with current spikes or by bypassing most of
the power supplies in the other quadrants. We also
could consider operating half the power supplies as
rectifiers and half as inverters.
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Fuja, Raymond & Praeg, Walter. Power Supplies for Precooler Ring, report, December 12, 1980; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1012463/m1/1/: accessed March 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.