DocumentCode :
1596666
Title :
Refurbishment of low jitter trigger system for a Marx generator
Author :
Hughes, Murray J.
Author_Institution :
Pulsed Power Group, AWE, Aldermaston, UK
fYear :
2013
Firstpage :
1
Lastpage :
1
Abstract :
This paper will detail the refurbishment and testing of a generic trigger unit design for installation on several Marx generators, which was originally designed and built in 1990. The purpose of the refurbishment is to remove all obsolete components, update the design to meet modern wiring standards and safety practices, and the design is required to be installed on different Marx generators. The basic structure of the design is that a High Voltage supply charges a capacitor to 15kV, then a 300V pulse triggers a thyristor to break the spark gap to discharge the capacitor into a pulse autotransformer (which has an output up to 500kV). This design is compact, has low jitter (~2ns), is invulnerable to self triggering and the majority of the system operates in air (except for the oil-filled pulse autotransformer). Safety features that will be introduced to the design will be two voltage monitoring lines (local and at control point), a dedicated bleed resistor chain (for the 112.5J stored energy) and will be inside an earthed container that can be accessed by key only. When power is removed, the two monitor resistor chains and bleed resistor chain will give a RC discharge of 20-30 seconds (100-150 seconds full discharge).
Keywords :
autotransformers; power capacitors; pulse generators; pulse transformers; pulsed power supplies; spark gaps; thyristors; trigger circuits; Marx generator; dedicated bleed resistor chain; energy 112.5 J; generic trigger unit refurbishment; low jitter trigger system; oil-filled pulse autotransformer; spark gap; time 100 s to 150 s; time 20 s to 30 s; voltage 15 kV; voltage 300 V; voltage monitoring line; Capacitors; Discharges (electric); Generators; Jitter; Monitoring; Resistors; Safety;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science (ICOPS), 2013 Abstracts IEEE International Conference on
Conference_Location :
San Francisco, CA
ISSN :
0730-9244
Type :
conf
DOI :
10.1109/PLASMA.2013.6635001
Filename :
6635001
Link To Document :
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