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If two drift chambers are used with the wires of one orthogonal to the wires of the other, both orthogonal to the beam direction, a more precise detection of the position is obtained. If an additional simple detector (like the one used in a veto counter) is used to detect, with poor or null positional resolution, the particle at a fixed ...
In particle physics there have been many devices used for tracking. These include cloud chambers (1920–1950), nuclear emulsion plates (1937–), bubble chambers (1952–), [ 3 ] spark chambers (1954-), multi wire proportional chambers (1968–) and drift chambers (1971–), [ 4 ] including time projection chambers (1974–).
There are two aspects of the muon detectors: the planar drift chambers and scintillators. There are four layers of planar drift chambers, each with the capability of detecting muons with a transverse momentum p T > 1.4 GeV/c. [9] These drift chambers work in the same way as the COT. They are filled with gas and wire.
A time projection chamber consists of a gas-filled detection volume in an electric field with a position-sensitive electron collection system. The original design (and the one most commonly used) is a cylindrical chamber with multi-wire proportional chambers (MWPC) as endplates.
The DRIFT detector's target material is a 1 m 3 cubical drift chamber filled with a low pressure mixture of carbon disulfide (CS 2) and carbon tetrafluoride (CF 4) gases (30 and 10 torrs (4.0 and 1.3 kPa), respectively). It is predicted that WIMPs will occasionally collide with the nucleus of a sulfur or carbon atom in the carbon disulfide gas ...
A new drift chamber, DR2, was built to replace the original drift chamber. The new drift chamber had the same outer radius as the original one so that it could be installed before the rest of the CLEO II upgrades were ready. DR2 was a 51 layer detector, with a 000+000- axial/stereo layer arrangement.
Schematic diagram of ion chamber, showing drift of ions. Electrons typically drift 1000 times faster than positive ions due to their much smaller mass. [2] Ionization chambers operate at a low electric field strength, selected such that no gas multiplication takes place. The ion current is generated by the creation of "ion pairs", consisting of ...
Therefore, chambers to detect muons are placed at the very edge of the experiment where they are the only particles likely to register a signal. To identify muons and measure their momenta, CMS uses three types of detector: drift tubes (DT), cathode strip chambers (CSC), resistive plate chambers (RPC), and Gas electron multiplier (GEM).
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