Magnetic pulsed septa for the synchrotron “Pakhra”

Author

Bashmakov, Yu.A. ; Karpov, V.A.

Author_Institution

P.N. Lebedev Phys. Inst., Acad. of Sci., Moscow, Russia

Volume

30

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

2597

Lastpage

2599

Abstract

Slow extraction system of the Synchrotron “Pakhra” contains two pulsed septum magnets. They are located inside the synchrotron vacuum chamber. Both the soft and the hard septum magnets have similar mechanical construction. They consist of four magnetic blocks split by three copper brackets. The dimensions of the magnetic gap are 1.2 cm height and 3.6 cm width. The soft septum thickness is 0.1 cm. The septum is cooled indirectly by the copper brackets. The fringing field is less than 2% of the field in the core gap. To generate the maximum field of 0.08 T in an one-turn winding 800 A current is required. The second septum is water cooled and it is 0.5 cm thick. The field strength of this magnet can be raised up to 0.4 T at 4000 A. The septa are fed by current pulsers. The leading edge of the pulses is 1 msec and their flat peaks range from 2 msec to 3 msec. Repetition rate is 50 Hz

Keywords

beam handling equipment; beam handling techniques; electron accelerators; synchrotrons; 0.08 T; 0.1 cm; 0.4 T; 0.5 cm; 1.2 cm; 3.6 cm; 4000 A; 50 Hz; 800 A; Cu brackets; Pakhra; core gap; current pulsers; fringing field; hard septum magnets; magnetic pulsed septa; one-turn winding; pulsed septum magnets; slow extraction system; soft septum magnets; synchrotron; synchrotron vacuum chamber; water cooled septum; Apertures; Cooling; Copper; Current density; Electron beams; Magnetic cores; Magnets; Resonance; Strips; Synchrotrons;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.305810

Filename

305810