Performance simulation of BaBar DIRC bar boxes in TORCH

TORCH is a large-area precision time-of-flight detector based on the DIRC principle. The DIRC bar boxes of the BaBar experiment at SLAC could possibly be reused to form a part of the TORCH detector time-of-flight wall area, proposed to provide positive particle identification of low momentum kaons i...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2017-12, Vol.876, p.202-205
Main Authors: Föhl, K., Brook, N., Castillo García, L., Cussans, D., Forty, R., Frei, C., Gao, R., Gys, T., Harnew, N., Piedigrossi, D., Rademacker, J., Ros García, A., van Dijk, M.
Format: Article
Language:English
Subjects:
Cherenkov light
DIRC
elsarticle.cls
Time-of-flight
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Summary:TORCH is a large-area precision time-of-flight detector based on the DIRC principle. The DIRC bar boxes of the BaBar experiment at SLAC could possibly be reused to form a part of the TORCH detector time-of-flight wall area, proposed to provide positive particle identification of low momentum kaons in the LHCb experiment at CERN. For a potential integration of BaBar bar boxes into TORCH, new imaging readout optics are required. From the several designs of readout optics that have been considered, two are used in this paper to study the effect of BaBar bar optical imperfections on the detector reconstruction performance. The kaon-pion separation powers obtained from analysing simulated photon hit patterns show the performance reduction for a BaBar bar of non-square geometry compared to a perfectly rectangular cross section.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2017.02.078