The exploration of ionizing radiation started in 1895 with Wilhelm Röntgen who performed lots of experiments including taking the first photo of his wife’s hand and skeletal structure with the X-Rays. This discovery was followed in 1896 by Henri Becquerel’s observation that uranium salts gave off similar rays. After These rays was named by Marie Curie as radiation who was awarded Nobel Price twice about radiation. Ernest Rutherford and Paul Villard classified radiation into three categories depending on their influence on the objects and their movement in the magnetic field; alpha, beta, and gamma. In the mean time, theory of the ionization mechanism was formulated by John Sealy Townsend between 1897 and 1901. With the theorical development in ionization radiation, research on gaseous ionization detectors commenced with Hans Geiger under the supervision of Ernest Rutherford, culminating in the development of a device in 1908 which was later called the “Geiger Counter”. However this counter could only detect alpha particles. In 1928, Geiger and Walther Müller improved the counter for detecting any kind of ionizing radiation.Spark chamber, stramer chamber, bubble chamber and cloud chamber are amongst the early gaseous detectors. Gaseous detectors are generally used for tracking charge particles. The curvature of the rajectory of the particle under the magnetic field gives us information about their momenta, and is related to the energy loss and mass of particles. Many of the elementary particles such as positron, muon etc have been found by these early detectors. The greatest revolution about gaseous detectors was in 1968 when Georges Charpak invented the MWPC which earned him the Nobel Prize in 1992. The multiwire proportional chamber can record up to one million tracks per second and its electronic readout allows interfacing directly to the computers. Multi wire chambers, and its follow-ups like drift chambers and time projection chamber become valuable and crucial in high energy physics because of their speed and the precision. New readout techniques were searched for improving the spatial resolution of the MWPC. At the end using a delay line between the cathode wires was chosen for simplifying the data acquisition. That new device was called Delay Wire Chamber, which provides good resolution(~200 micron) at low cost. 


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