Hadron beam test of a scintillating fibre tracker system for elastic scattering and luminosity measurement in ATLAS
- 1 July 2007
- journal article
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 2 (7) , P07004
- https://doi.org/10.1088/1748-0221/2/07/p07004
Abstract
A scintillating fibre tracker is proposed to measure elastic proton scattering at very small angles in the ATLAS experiment at CERN. The tracker will be located in so-called Roman Pot units at a distance of 240 m on each side of the ATLAS interaction point. An initial validation of the design choices was achieved in a beam test at DESY in a relatively low energy electron beam and using slow off-the-shelf electronics. Here we report on the results from a second beam test experiment carried out at CERN, where new detector prototypes were tested in a high energy hadron beam, using the first version of the custom designed front-end electronics. With a spatial resolution of 25 μm an adequate tracking performance was obtained, under conditions which are similar to the situation at the LHC. In addition, the alignment method using so-called overlap detectors was studied and shown to have the expected precision.Keywords
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