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Designer and properties of a multianode, cylindrical proportional counter for position sensing at high count rates.

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RC-encoding for position-sensitive proportional counters using low-resistance, metal-wire anode and active load

¹Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.

The Review of Scientific Instruments

|March 1, 1979

Summary

This study introduces a new method for using metal-wire anodes in position-sensitive proportional counters (PSPCs). This innovation offers improved ruggedness and stability, matching the performance of traditional anodes.

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Area of Science:

Physics
Instrumentation
Particle Detectors

Background:

Position-sensitive proportional counters (PSPCs) traditionally use carbon-coated quartz anodes.
Metal-wire anodes offer potential advantages in ruggedness and cost but face challenges with stability and signal processing.

Purpose of the Study:

To develop a feedback-stabilized active load capacitance system for utilizing low-resistance metal-wire anodes in PSPCs.
To evaluate the performance of metal-wire anodes in PSPCs for applications requiring high count rates and stability.

Main Methods:

A feedback-stabilized active load capacitance was designed and implemented.
An experimental 12-cm-long PSPC with a Nichrome metal-wire anode and a 21 pF active load capacitance was constructed and tested.

Main Results:

The metal-wire anode PSPC demonstrated spatial sensitivity and resolution comparable to PSPCs with carbon-coated quartz anodes.
The system exhibited enhanced ruggedness, ease of handling, and superior stability at high count rates.

Conclusions:

Feedback-stabilized active load capacitance enables the effective use of metal-wire anodes in PSPCs.
Metal-wire anodes represent a viable and advantageous alternative for PSPC construction, particularly in demanding applications.