Position-sensitive proportional counters using resistance-capacitance position encoding
A new method was developed for encoding the position of individual photons, neutrons, or charged particles in proportional counters by using the distributed RC line characteristics of these counters. The signal processing is described and guidelines for the design and operation of these position sensitive proportional counters (PSPCs) are given. Using these guidelines, several prototypic PSPCs were constructed to improve the spatial resolution and shorten the signal processing time; for example, the intrinsic spatial uncertainty was reduced to 28 $mu$ fwhm for alpha particles and 100 $mu$ fwhm for low-energy x rays (2 to 6 keV). Also, the signal processing time was reduced to 0.6 $mu$sec without seriously degrading the spatial resolution. These results have opened new fields of application of the RC position encoding method in imaging distributions of photons, charged particles, or neutrons in nuclear medicine, physics, and radiography. (auth)
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-33-009322
- OSTI ID:
- 4130048
- Report Number(s):
- ORNL-TM-5083
- Resource Relation:
- Other Information: Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
Similar Records
Line-scanning proportional counter camera
RC-encoding for position-sensitive proportional counters using low-resistance, metal-wire anode and active load capacitance
Related Subjects
440101* -Instrumentation-Radiation Instrumentation- General Detectors & Monitors
*CHARGED PARTICLE DETECTION- POSITION SENSITIVE DETECTORS
*GAMMA DETECTION- POSITION SENSITIVE DETECTORS
*MULTIWIRE PROPORTIONAL CHAMBERS- READOUT SYSTEMS
*NEUTRON DETECTION- POSITION SENSITIVE DETECTORS
*POSITION SENSITIVE DETECTORS- READOUT SYSTEMS
*PROPORTIONAL COUNTERS- READOUT SYSTEMS
*X-RAY DETECTION- POSITION SENSITIVE DETECTORS
CONSTRUCTION
DATA PROCESSING
DESIGN
ELECTRONIC CIRCUITS
ENERGY LOSSES
SPATIAL RESOLUTION