Č. Zupančič Created 2026-10-18 Updated 2026-11-05
Coauthored tests of multiwire proportional chambers in which wires spaced apart operated as independent proportional counters, enabling electronic localization of charged-particle tracks.[ref]
The Use of Multiwire Proportional Counters to Select and Localize Charged Particles by Georges Charpak and others. Abstract: independent wires at 0.1 cm separation
Georges Charpak Created 2026-10-18 Updated 2026-11-05
Georges Charpak developed the multiwire proportional chamber, replacing repeated photographic recording with electronic measurements of charged-particle passages. Ionization electrons drift through a gas toward thin wires; the strong local electric field produces avalanches and readable pulses. Knowing which wires respond supplies spatial information, while the electrical output permits rapid processing of many events. This connects microscopic ionization with the practical rate and position resolution of a particle detector.[ref]
The Use of Multiwire Proportional Counters to Select and Localize Charged Particles by Georges Charpak and others. 1968, multiwire counter construction, localization and proportional response
A physicist who developed electronic particle detectors at CERN.[ref]
Professional profile of Georges Charpak. Independent professional identity
Portrait of Georges Charpak
. Photographe de la Ville de Saint-Dié-des-Vosges, dans le cadre de sa mission ; scan par Ji-Elle. CC BY-SA 4.0, via Wikimedia Commons. Source. J. Favier Created 2026-10-18 Updated 2026-11-05
Coauthored tests of multiwire proportional chambers in which wires spaced apart operated as independent proportional counters, enabling electronic localization of charged-particle tracks.[ref]
The Use of Multiwire Proportional Counters to Select and Localize Charged Particles by Georges Charpak and others. Abstract: independent wires at 0.1 cm separation
Multiwire proportional chamber experiment Created 2026-10-18 Updated 2026-10-20
The original apparatus used stainless-steel wires between meshes away, flowing argon with organic vapor, negative mesh voltage and individual electronic amplifiers. A X-ray source calibrated pulse height while voltage was varied.[ref]
A coincidence circuit defined a narrow proton or pion beam. Scanning it across wires tested localization; the response edge matched the beam width, limiting the inference. Distant counts were attributed to accidental coincidences. Separate electron scans measured pulse delay versus position, comparing gas mixtures and pulse-height-dependent electronics.[ref]
Thresholds rejected small pulses, reducing detection efficiency. Wire-independence tests did not establish unlimited separation of overlapping tracks.[ref]
R. Bouclier Created 2026-10-18 Updated 2026-11-05
Coauthored tests of multiwire proportional chambers in which wires spaced apart operated as independent proportional counters, enabling electronic localization of charged-particle tracks.[ref]
The Use of Multiwire Proportional Counters to Select and Localize Charged Particles by Georges Charpak and others. Abstract: independent wires at 0.1 cm separation
T. Bressani Created 2026-10-18 Updated 2026-11-05
Coauthored tests of multiwire proportional chambers in which wires spaced apart operated as independent proportional counters, enabling electronic localization of charged-particle tracks.[ref]
The Use of Multiwire Proportional Counters to Select and Localize Charged Particles by Georges Charpak and others. Abstract: independent wires at 0.1 cm separation
