Induction cell breakdown experiments for the Dual-Axis Radiographic Hydrotest (DARHT) Facility

Conference · Tue Jan 01 00:00:00 EST 1991

DOI:https://doi.org/10.1109/PPC.1991.733427· OSTI ID:5759345

Earley, L M; Barnes, G A; Eversole, S A; Kauppila, T J; Keel, G; Liska, D J; Moir, D C; Parsons, W M; Rader, D C

Linear induction cells for the Dual-Axis Radiographic Hydrotest (DARHT) Facility have been tested to determine their high-voltage breakdown characteristics. A variety of full scale insulators were tested both in actual cells and in fixtures simulating induction cells. All insulators were constructed using cross-linked polystyrene (Rexolite). High-voltage pulses up to 550 kV were applied to the insulators using both a 60-ns pulse Blumlein and a 200-ns pulse cable Marx. Two different vacuum gaps were used in these tests, 1.46 and 1.91 cm. The tests were performed at various vacuum levels ranging from 1 {times} 10{sup {minus}6} to 5 {times} 10{sup {minus}8} torr. Breakdown tests of the insulators were also performed with an electron beam generated in the vacuum gap through the use of a velvet emitter. The gap voltage and current were measured using calibrated E-dot and B-dot probes. 15 refs., 7 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5759345
• Report Number(s): LA-UR-91-2051; CONF-910640-20; ON: DE91014603
• Resource Relation: Conference: 8. IEEE pulsed power conference, San Diego, CA (United States), 17-19 Jun 1991
• Country of Publication: United States
• Language: English

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CAVITY RESONATORS
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HIGH-VOLTAGE PULSE GENERATORS
INDUCTION
LINEAR ACCELERATORS
POLYSTYRENE
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430302* - Particle Accelerators- Injection & Extraction Systems