New corrector system for the Fermilab Booster
We present an ambitious ongoing project to build and install a new corrector system in the Fermilab 8 GeV booster. The system consists of 48 corrector packages, each containing horizontal and vertical dipoles, normal and skew quadrupoles, and normal and skew sextupoles. Space limitations in the machine have motivated a unique design, which utilizes custom wound coils around a 12 pole laminated core. Each of the 288 discrete multipole elements in the system will have a dedicated power supply, the output current of which is controlled by an individual programmable ramp. This paper describes the physics considerations which drove the design, as well as issues in the control of the system.
Design and Fabrication of a Multi-Element Corrector Magnet for the Fermilab Booster
A new package of six corrector elements has been designed to better control the beam position, tune, and chromaticity in the Fermilab Booster synchrotron. It incorporates both normal and skew orientations of dipole, quadrupole, and sextupole magnets. These new corrector magnets will be installed in the Fermilab Booster ring in place of old style corrector elements. A severe space restriction and rapid slew rate have posed special challenges. The magnet design, construction, and performance are presented.
Combined AC corrector magnets
Conceptual designs have been made for two types of multipole corrector magnets for use in TRIUMF's proposed KAON Booster ring which operates at 50 Hz. The lack of space in the synchrotron lattice makes it attractive to combine dipole, quadrupole and sextupole correctors in the same yoke structure. A conventional constant current density winding design is compared with an alternative magnet with twelve poles and windings distributed in slots and at the pole faces. The problem of induced voltages in the windings is discussed.<<ETX>>