Design and preliminary results for a fast bipolar resonant discharge pulser using SCR switches for driving the injection bump magnets at the ALS

Author

Stover, Greg ; Reginato, Lou

Author_Institution

Lawrence Berkeley Lab., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

1351

Abstract

A fast (4.0 μs half period) resonant discharge pulser using SCRs has been designed and constructed to drive the injection bump magnet system at the Advanced Light Source (ALS). The pulser employs a series-parallel arrangement of Silicon Controlled Rectifiers (SCRs) that creates a bipolar high voltage (+/-10 KV), high peak current (6600 amps.) and a high di/dt (6000 amp/μs) switch network that discharges a capacitor bank into the magnet load. Fast recovery diodes in series with the SCRs significantly reduces the SCR turn-off time during the negative current cycle of the magnet. The SCR switch provides a very reliable and stable alternative to the gas filled Thyratron. A very low impedance transmission system allows the pulser system to reside completely outside the storage ring shielding wall

Keywords

beam handling equipment; electron accelerators; storage rings; 10 kV; 4 mus; 6600 A; ALS; Advanced Light Source; SCR switches; SCR turn-off time; bipolar high voltage; capacitor bank; fast bipolar resonant discharge pulser; fast recovery diodes; gas filled Thyratron; half period resonant discharge pulser; injection bump magnets; magnet load; negative current cycle; peak current; series-parallel Silicon Controlled Rectifiers; storage ring shielding wall; switch network; very low impedance transmission system; Diodes; Drives; Fault location; Light sources; Magnetic resonance; Magnetic shielding; Magnetic switching; Switched capacitor networks; Switches; Thyristors;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308598

Filename

308598