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Physics > Instrumentation and Detectors

arXiv:1008.5185 (physics)
[Submitted on 30 Aug 2010]

Title:Calibration of the TWIST high-precision drift chambers

Authors:A. Grossheim, J. Hu, A. Olin
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Abstract:A method for the precise measurement of drift times for the high-precision drift chambers used in the TWIST detector is described. It is based on the iterative correction of the space-time relationships by the time residuals of the track fit, resulting in a measurement of the effective drift times. The corrected drift time maps are parametrised individually for each chamber using spline functions. Biases introduced by the reconstruction itself are taken into account as well, making it necessary to apply the procedure to both data and simulation. The described calibration is shown to improve the reconstruction performance and to extend significantly the physics reach of the experiment.
Comments: 8 pages, 5 figures
Subjects: Instrumentation and Detectors (physics.ins-det); High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:1008.5185 [physics.ins-det]
  (or arXiv:1008.5185v1 [physics.ins-det] for this version)
  https://doi.org/10.48550/arXiv.1008.5185
Journal reference: Nucl.Instrum.Meth.A623:954-959,2010
Related DOI: https://doi.org/10.1016/j.nima.2010.08.105

Submission history

From: Alexander Grossheim [view email]
[v1] Mon, 30 Aug 2010 23:29:05 UTC (528 KB)
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