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Vol. 10 No. 2 (2019)
Vol 10, Núm. 2 (2019): Julio - Diciembre

Artículos de investigación / Research papers

Construction and characterization of a multiwire proportional chamber detector

https://doi.org/10.19053/01217488.v10.n2.2019.8304

Published 2019-07-23

  • Hector Fabio Castro Serrato
    • ,
  • Maritza Juliette Delgado Gonzalez

Hector Fabio Castro Serrato
Universidad Nacional de Colombia, sede Bogota

Maritza Juliette Delgado Gonzalez
Universidad Nacional de Colombia, sede Bogota

Abstract

We have built and characterized a gaseous particle detector of the type “multiwire proportional chamber”, known as MWPC. The detector consists of an electronic circuit inside a hermetically sealed acrylic box, in an appropriate atmosphere of gas. Once the mechanical and electrical operation was verified, we performed the characterization as a particle detector. We measured the characteristic curve, consisting of the electrical charge collected at the electrodes, as function of applied voltage. Then we measured the count rate, for muons from cosmic radiation, versus voltage, known as “Plateau curve”. These measurements were performed with different mixtures of gases: 100%Air, 100% Ar, 100% CH4 and 90% Ar+10% CH4 (P10). In the results we discuss the operation of the detector at different voltages, for these gas mixtures. The best performance was obtained with the P10 mixture, for which, the detector works in the proportional region, for voltages between 3700 V to 4000 V, with an optimal operating voltage of 3850 V.

Keywords

Particle detectors, multiwire proportional chamber, ionization chamber, proportional counter, characteristic curve

PDF (Español)

Author Biography

Hector Fabio Castro Serrato

Profesor Asociado, 20018 - 

Departamento de Fisica

Universidad Nacional de Colombia

 

Profesor Asociado, 2005 - 2008

Departamento de Física

Universidad de los Andes

Bogotá - Colombia

 

Investigador Asociado, 1998 - 2004

Instituto de Fisica y Astronomia

Universidad de Tel Aviv, Israel

 

Investigador Asociado, 2006 - 2008

Instituto de Fisica Experimental

Universidad de Lausana, Suiza

 

Investigador Asociado

Centro Europeo de Investigación Nuclear - CERN

Ginebre - Suiza

 

ESTUDIOS

PhD, 1991 - 1995

Universidad de  Lausana, Suiza

 

Fisico, 1982 - 1987

Universidad de los Andes

Bogotá - Colombia

 

Ingeniero Electrico, 1980 - 1985

Universidad de los Andes

Bogotá - Colombia

Maritza Juliette Delgado Gonzalez

2015 - Estudiante Doctorado, Universidad Antonio Nariño, Bogotá

2011-2014 - Maestría en Fisica, Universidad nacional de Colombia

2005 - 2010 - Pregrado en Fisica, Universidad Pedagogica de Colombia

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