Performance simulation of BaBar DIRC bar boxes in TORCH

K. Föhl; N. Brook; L. Castillo García; D. Cussans; R. Forty; C. Frei; R. Gao; T. Gys; N. Harnew; D. Piedigrossi; J. Rademacker; A. Ros García; M. van Dijk

doi:10.1016/j.nima.2017.02.078

Performance simulation of BaBar DIRC bar boxes in TORCH

K. Föhl, N. Brook, L. Castillo García, D. Cussans, R. Forty, C. Frei, R. Gao, T. Gys, N. Harnew, D. Piedigrossi, J. Rademacker, A. Ros García, M. van Dijk

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Abstract

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.

Original language	English
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Early online date	27 Feb 2017
DOIs	https://doi.org/10.1016/j.nima.2017.02.078
Publication status	E-pub ahead of print - 27 Feb 2017

Keywords

Cherenkov light
DIRC
Elsarticle.cls
Time-of-flight

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2017.02.078Licence: CC BY

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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. (2017). Performance simulation of BaBar DIRC bar boxes in TORCH. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Advance online publication. https://doi.org/10.1016/j.nima.2017.02.078

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 2017, 'Performance simulation of BaBar DIRC bar boxes in TORCH', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. https://doi.org/10.1016/j.nima.2017.02.078

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abstract = "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.",

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doi = "10.1016/j.nima.2017.02.078",

language = "English",

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AU - Föhl, K.

AU - Brook, N.

AU - Castillo García, L.

AU - Cussans, D.

AU - Forty, R.

AU - Frei, C.

AU - Gao, R.

AU - Gys, T.

AU - Harnew, N.

AU - Piedigrossi, D.

AU - Rademacker, J.

AU - Ros García, A.

AU - van Dijk, M.

PY - 2017/2/27

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N2 - 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.

AB - 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.

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KW - DIRC

KW - Elsarticle.cls

KW - Time-of-flight

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JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Performance simulation of BaBar DIRC bar boxes in TORCH

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