Multimegavolt voltage measurements in a PBFA II prototype water line using the electro-optic Kerr effect

Conference · Tue Jan 01 00:00:00 EST 1985

OSTI ID:5665210

Allen, G R; Davis, H P; Turman, B N; Bloomquist, D D; Chang, J; Neyer, B T; Hebner, R E

We have developed a highly accurate, non-perturbing, non-invasive voltage monitor for multimegavolt measurements in water using the electro-optic Kerr effect. Measurements have been made in various geometries at approx.2.5 MV in the water transmission line of the DEMON (PBFA-II demonstration) accelerator at Sandia. In each geometry, including flat parallel plates, tapered flat plates, coaxial line, and intermediate store capacitor, the Kerr voltage measurements are compared with those of standard V-dot probes. The accuracy of the Kerr measurements is approx.+-4%, improvable to < +-2%. The technique can be used to calibrate V-dot probes under full-voltage operating conditions. Moreover, in the presence of streamers or voltage nonuniformities (induced by switching feeds, e.g.), the Kerr measurements are more reliable and accurate than probes. In order to replace V-dot probes in a routine, multi-channel application, we are implementing the Kerr monitor on the streak-camera-based High Speed Multichannel Data Recorder.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA); National Bureau of Standards, Washington, DC (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5665210
• Report Number(s): SAND-84-2480C; CONF-850616-49; ON: DE85013781
• Resource Relation: Conference: 5. IEEE pulsed power conference, Washington, DC, USA, 10 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PARTICLE BEAM FUSION ACCELERATOR
POWER SUPPLIES
POWER TRANSMISSION
ELECTRIC POTENTIAL
KERR EFFECT
MONITORING
STREAK PHOTOGRAPHY
WATER
ACCELERATORS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
EQUIPMENT
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOTOGRAPHY
PHYSICAL PROPERTIES
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