Use of B-dot current probes in an intense bremsstrahlung environment
Special B-dot current probes are being developed to measure the anode and cathode currents in Sandia's Particle Beam Fusion Accelerator II. These probes are designed to measure the 4 MA current in an intense radiation field as high as 300 krad. This radiation will induce large signals on coaxial signal cables making measurement with conventional B-dot probes difficult. A double B-dot probe has been designed for this purpose and utilizes thick-film printing techniques to place two loops of identical geometry but opposite polarity on a single ceramic substrate. The signals from these loops are appropriately added at the receiving end of the transmission cables to provide common-mode rejection of bremsstrahlung induced noise. Coaxial cables with small cross sections have been incorporated for signal transmission near the radiation source. The design of these probes is presented with data from the first PBFA II shots. 4 refs., 7 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6091102
- Report Number(s):
- SAND-85-1575C; CONF-860384-5; ON: DE86007819
- Country of Publication:
- United States
- Language:
- English
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ACCELERATORS
CABLES
CALIBRATION
COAXIAL CABLES
CONDUCTOR DEVICES
DESIGN
ELECTRIC CABLES
ELECTRIC PROBES
ELECTRICAL EQUIPMENT
EQUIPMENT
PARTICLE BEAM FUSION ACCELERATOR
PROBES
WAVE FORMS