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Yayınlanmış 1 Ocak 2017 | Sürüm v1
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Measurement of cosmic-ray reconstruction efficiencies in the MicroBooNE LArTPC using a small external cosmic-ray counter

Yazarlar/Oluşturanlar

  • 1. Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
  • 2. IIT, Chicago, IL 60616 USA
  • 3. Univ Cambridge, Cambridge CB3 0HE, England
  • 4. Univ Texas Arlington, Arlington, TX 76019 USA
  • 5. Univ Bern, CH-3012 Bern, Switzerland
  • 6. Yale Univ, New Haven, CT 06520 USA
  • 7. Univ Michigan, Ann Arbor, MI 48109 USA
  • 8. Univ Oxford, Oxford OX1 3RH, England
  • 9. TUBITAK Space Technol Res Inst, METU Campus, TR-06800 Ankara, Turkey
  • 10. Brookhaven Natl Lab, Upton, NY 11973 USA
  • 11. Univ Lancaster, Lancaster LA1 4YW, England
  • 12. Kansas State Univ, Manhattan, KS 66506 USA
  • 13. Columbia Univ, New York, NY 10027 USA

Açıklama

The MicroBooNE detector is a liquid argon time projection chamber at Fermilab designed to study short-baseline neutrino oscillations and neutrino-argon interaction cross-section. Due to its location near the surface, a good understanding of cosmic muons as a source of backgrounds is of fundamental importance for the experiment. We present a method of using an external 0.5 m (L) x 0.5 m (W) muon counter stack, installed above the main detector, to determine the cosmic-ray reconstruction efficiency in MicroBooNE. Data are acquired with this external muon counter stack placed in three different positions, corresponding to cosmic rays intersecting different parts of the detector. The data reconstruction efficiency of tracks in the detector is found to be epsilon(data) = (97.1 +/- 0.1 (stat) +/- 1.4 (sys)) %, in good agreement with the Monte Carlo reconstruction efficiency epsilon(MC) = (97.4 +/- 0.1)%. This analysis represents a small-scale demonstration of the method that can be used with future data coming from a recently installed cosmic-ray tagger system, which will be able to tag approximate to 80% of the cosmic rays passing through the MicroBooNE detector.

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