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Magnetic pulse compression circuits for plasma devices

Abstract

Two magnetic pulse compression circuits (MPCC), for two different plasma devices, are presented. The first is a 20 J/pulse, 3-stage circuit designed to trigger a low pressure discharge. The circuit has 16-18 kV working voltage, and 200 nF in each stage. The saturable inductors are realized with toroidal 25 {mu}m strip-wound cores, made of a Fe-Ni alloy, with 1.5 T saturation induction. The total magnetic volume is around 290 cm{sup 3}. By using a 25 kV/1 A thyratron as a primary switch, the time compression is from 3.5 {mu}s to 450 ns, in a short-circuit load. The second magnetic pulser is a 200 J/pulse circuit, designed to drive a high average power plasma focus soft X-ray source, for X-ray microlithography as the main application. The 3-stage pulser should supply a maximum load current of 100 kA with a rise-time of 250 - 300 ns. The maximum pulse voltage applied on the plasma discharge chamber is around 20 - 25 kV. The three saturable inductors in the circuit are made of toroidal strip-wound cores with METGLAS 2605 CO amorphous alloy as the magnetic material. The total, optimized mass of the magnetic material is 34 kg. The maximum repetition rate is limited  More>>
Authors:
Georgescu, N; Zoita, V; Presura, R [1] 
  1. Inst. of Physics and Technology of Radiation Devices, Bucharest (Romania)
Publication Date:
Dec 31, 1996
Product Type:
Conference
Report Number:
INIS-CZ-0002; CONF-960610-
Reference Number:
SCA: 700390; PA: AIX-28:056048; EDB-97:114563; SN: 97001835028
Resource Relation:
Conference: BEAMS `96: 11. international conference on high-power particle beams, Prague (Czech Republic), 10-14 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of Beams `96. Proceedings of the 11th international conference on high power particle beams. Vol. I; Jungwirth, K.; Ullschmied, J. [eds.]; PB: [684] p.
Subject:
70 PLASMA PHYSICS AND FUSION; PLASMA FOCUS DEVICES; MAGNETIC CIRCUITS; COMPRESSION; MAGNET CORES; METALLIC GLASSES; THYRATRONS; TRIGGER CIRCUITS
OSTI ID:
511244
Research Organizations:
Ceskoslovenska Akademie Ved, Prague (Czech Republic). Ustav Fyziky Plazmatu
Country of Origin:
Czech Republic
Language:
English
Other Identifying Numbers:
Other: ON: DE97637662; ISBN 80-902250-3-9; TRN: CZ9726779056048
Availability:
INIS; OSTI as DE97637662
Submitting Site:
INIS
Size:
pp. 591-594
Announcement Date:

Citation Formats

Georgescu, N, Zoita, V, and Presura, R. Magnetic pulse compression circuits for plasma devices. Czech Republic: N. p., 1996. Web.
Georgescu, N, Zoita, V, & Presura, R. Magnetic pulse compression circuits for plasma devices. Czech Republic.
Georgescu, N, Zoita, V, and Presura, R. 1996. "Magnetic pulse compression circuits for plasma devices." Czech Republic.
@misc{etde_511244,
title = {Magnetic pulse compression circuits for plasma devices}
author = {Georgescu, N, Zoita, V, and Presura, R}
abstractNote = {Two magnetic pulse compression circuits (MPCC), for two different plasma devices, are presented. The first is a 20 J/pulse, 3-stage circuit designed to trigger a low pressure discharge. The circuit has 16-18 kV working voltage, and 200 nF in each stage. The saturable inductors are realized with toroidal 25 {mu}m strip-wound cores, made of a Fe-Ni alloy, with 1.5 T saturation induction. The total magnetic volume is around 290 cm{sup 3}. By using a 25 kV/1 A thyratron as a primary switch, the time compression is from 3.5 {mu}s to 450 ns, in a short-circuit load. The second magnetic pulser is a 200 J/pulse circuit, designed to drive a high average power plasma focus soft X-ray source, for X-ray microlithography as the main application. The 3-stage pulser should supply a maximum load current of 100 kA with a rise-time of 250 - 300 ns. The maximum pulse voltage applied on the plasma discharge chamber is around 20 - 25 kV. The three saturable inductors in the circuit are made of toroidal strip-wound cores with METGLAS 2605 CO amorphous alloy as the magnetic material. The total, optimized mass of the magnetic material is 34 kg. The maximum repetition rate is limited at 100 Hz by the thyratron used in the first stage of the circuit, the driver supplying to the load about 20 kW average power. (author). 1 tab., 3 figs., 3 refs.}
place = {Czech Republic}
year = {1996}
month = {Dec}
}