Improving the jitter of the 150 kJ experiments solid dielectric switches
The 150 kJ experiment has four capacitor modules that are individually switched into a central transmission line. Each switch must carry a peak current of 2 MA, have an inductance of under 5 nH, a resistance of under 1 mil, a jitter of 25 nS and be able to hold off 60 kV. We determined that a metal to metal contact solid dielectric switch (SDS) that uses the force from an exploding bridge foil (EBF) to rupture the dielectric would meet these specifications given that we were able to improve its jitter performance. The jitter reported by other experimenters on EBF triggers is in the 100 nS range. To develop a low jitter trigger we designed and tested triggers on an experimental test stand built to simulate a 150 kJ capacitor module. On this test stand we developed an EBF trigger with jitter under 25 nS and a new type of trigger we called the magnetic push trigger also with jitter under 25 nS. The magnetic push trigger uses the magnetic expansion of a stripline due to the Lorentz force to rupture the dielectric. We found that our magnetic push trigger did less damage to switch components and was easier to apply than EBF trigger.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10136915
- Report Number(s):
- UCRL-ID-112497; ON: DE93009459
- Resource Relation:
- Other Information: PBD: Jan 1993
- Country of Publication:
- United States
- Language:
- English
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