A fast injection kicker magnet for the Tevatron

Abstract

A new proton injection kicker system is required for the Tevatron in the Run II era. The new system was designed to supply 1.25 kG-m into a magnetic aperture of 48 mm vertical x 71 mm horizontal x 5 m long with a 396 ns bunch spacing. The system is configured to be upgraded to a bunch spacing of 132 ns with additional pulsed power supplies. The design of the magnet incorporated some novel features in order to meet these requirements. These include adjustable bus spacing to set the inductance, balanced positive and negative high voltage buses and an integrated capacitive pickup. This system has been installed in the Tevatron since July 2000.

A fast injection kicker system for the Tevatron

“…Significant money and effort were spent to build prototypes starting three years before operation was required. Since the magnet is covered in a companion paper [4], the remainder of this paper will focus on the power supply.…”

“…We relied on custom, built in capacitive pickups in the magnet [4]. The response of the installed systems, shown in Figure 3, was calculated using a spreadsheet and the measured magnet input and output voltages.…”

Advances of Transmission Line Kicker Magnets

“…This effect has been further described and modelled at TRIUMF in 1989 [11]. More recently, counter-coupling has been successfully applied at FNAL for the Tevatron injection kicker magnets [12] (Fig. 2).…”

“…To gain in filling time by a factor of two compared to a classical C-topology FNAL and KEK used a windowframe topology [12,13] (Fig. 2).…”

“…The dielectric is strontium titanate (4700 ppm/ºC). Because the magnet is insulated with inert liquid, standard epoxy housed capacitors have been used [12]. The NuMi kicker magnet currently under development at FNAL reuses the same principle with 46 cells and about 1.…”