Central Detectors

Wagner, A.

doi:10.1088/0031-8949/23/4a/015

Cited by 14 publications

(3 citation statements)

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“…Cylindrical drift chambers have found wide acceptance at intersecting storage rings. Wagner [11] separates the chambers that have been built so far into "classical" and "pictorial" categories. The classical chambers are defined to have 15 -20 planes of wires, approximately half of which are oriented parallel to the magnetic field axis.…”

Section: Constructionmentioning

confidence: 99%

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Drift chambers

2023

Introduction to Experimental Particle Physics

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Drift chambersA drift chamber is a particle tracking device that uses the drift time of ionization electrons in a gas to measure the spatial position of an ionizing particle [1-3]. Drift chambers can achieve spatial resolutions an order of magnitude smaller than MWPCs. A typical timing measurement accuracy of 2 ns and a drift velocity of 4 cm/l1,5 corresponds to a theoretical spatial accuracy of 80 11m. Drift chambers have found wide acceptance as charged particle tracking detectors in spectrometer systems. When covering large solid angles, drift chambers provide resolution equal to MWPCs at a much lower cost.A typical drift chamber arrangement is shown in Fig. 10.1. A region of approximately uniform field is set up between the anode and cathode wires. A charged particle traversing the chamber liberates electrons that drift toward the anodes. The passage of the particle also generates a fast pulse in the scintillation counter that can be used to define a reference time to. The electrons drift for a time ~ t, after which they are collected at the anode, thereby providing a signal that a particle has passed. The position where the particle traversed the chamber is then given by i 1o+.11 X = w(t) dt 10 (10.1 ) where w(t) is the drift velocity. 10.1Properties of drift chamber gases The passage of ionizing radiation through the gas in a drift chamber cell leaves behind a trail of electrons and positive ions. In order to use the electron arrival times to accurately locate the position in the chamber that was traversed by the incoming particle, we must have an

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Section: Constructionmentioning

confidence: 99%

“…Pictorial drift chambers measure the drift time and signal charge using fast electronics capable of responding to more than one hit [11]. This can be done using an analog storage device, such as a CCD, which samples the input signal at a rate determined by an external clock.…”

Section: Readout Electronicsmentioning

confidence: 99%

Drift chambers

2023

Introduction to Experimental Particle Physics

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“…Of course in my selection I have been guided by a specific image of detectors, which are quite conventional and fall into the class of projection or imaging drift chambers [4]. Electrons are produced along charged particle trajectories (Fig.…”

Section: Introductionmentioning

confidence: 99%