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Summary
Two low-noise triaxial cables with solid Teflon dielectric offer superior performance for ionization chamber current measurements. These cables minimize noise currents from movement, polarization, and radiation, ensuring accurate data acquisition.
Area of Science:
- Instrumentation and Measurement
- Nuclear Physics
- Electrical Engineering
Background:
- Ionization chambers are crucial for measuring radiation.
- Accurate current measurements are vital for reliable data.
- Cable selection significantly impacts signal integrity in sensitive measurements.
Purpose of the Study:
- To critically evaluate seven coaxial cables for ionization chamber applications.
- To identify cables with optimal performance characteristics for carrying generated currents.
- To compare low-noise triaxial and two-conductor cables.
Main Methods:
- Studied inherent noise currents, movement-induced currents, and polarization currents.
- Assessed electrostatic shielding effectiveness of the central conductor.
- Evaluated radiation-induced cable currents for each cable type.
Main Results:
- Two low-noise triaxial cables demonstrated superior performance.
- Cables with solid Teflon dielectric surrounding the central conductor were most effective.
- Performance was assessed based on noise, shielding, and radiation sensitivity.
Conclusions:
- Low-noise triaxial cables with solid Teflon dielectric are recommended for ionization chamber applications.
- These cables provide the best overall performance for minimizing signal interference.
- Careful cable selection is essential for accurate ionization chamber measurements.