Abstract
The actual position of detector elements in the inner detector (ID) will differ from the design geometry and the perfect description of the nominal position in the simulation software. Several effects can cause detector misalignments. Some activities cause entire detectors to move, such as turning on and off the ATLAS magnetic fields or changes in temperature conditions. Other sources of misalignment, such as limitations in precision during the detector machining process, can affect the relative position of individual detector elements with respect to one another. The purpose of alignment is to correct the position of the detector elements, whatever the cause, to improve the momentum measurements of particles traversing the ID.
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Notes
- 1.
The “perfect geometry” is the description of the detector in the software which assumes that it was constructed to match its exact specifications.
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Brendlinger, K. (2018). Alignment of the TRT. In: Physics with Electrons in the ATLAS Detector . Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-73930-4_4
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DOI: https://doi.org/10.1007/978-3-319-73930-4_4
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