TUBİTAK Adresli Yayınlar Topluluğu
Published January 1, 2020 | Version v1
Journal article Open

A method to determine the electric field of liquid argon time projection chambers using a UV laser system and its application in MicroBooNE

Creators

  • 1. Harvard Univ, Cambridge, MA 02138 USA
  • 2. Kansas State Univ KSU, Manhattan, KS 66506 USA
  • 3. Illinois Inst Technol IIT, Chicago, IL 60616 USA
  • 4. Univ Cambridge, Cambridge CB3 0HE, England
  • 5. Univ Texas Arlington, Arlington, TX 76019 USA
  • 6. MIT MIT, Cambridge, MA 02139 USA
  • 7. Yale Univ, Dept Phys, Wright Lab, New Haven, CT 06520 USA
  • 8. Fermi Natl Accelerator Lab FNAL, Batavia, IL 60510 USA
  • 9. Univ Michigan, Ann Arbor, MI 48109 USA
  • 10. Univ Oxford, Oxford OX1 3RH, England
  • 11. Univ Manchester, Manchester M13 9PL, Lancs, England
  • 12. Brookhaven Natl Lab BNL, Upton, NY 11973 USA
  • 13. TUBITAK Space Technol Res Inst, METU Campus, TR-06800 Ankara, Turkey
  • 14. Syracuse Univ, Syracuse, NY 13244 USA
  • 15. Univ Lancaster, Lancaster LA1 4YW, England
  • 16. Columbia Univ, New York, NY 10027 USA

Description

Liquid argon time projection chambers (LArTPCs) are now a standard detector technology for making accelerator neutrino measurements, due to their high material density, precise tracking, and calorimetric capabilities. An electric field (E-field) is required in such detectors to drift ionization electrons to the anode where they are collected. The E-field of a TPC is often approximated to be uniform between the anode and the cathode planes. However, significant distortions can appear from effects such as mechanical deformations, electrode failures, or the accumulation of space charge generated by cosmic rays. The latter effect is particularly relevant for detectors placed near the Earth's surface and with large drift distances and long drift time. To determine the E-field in situ, an ultraviolet (UV) laser system is installed in the MicroBooNE experiment at Fermi National Accelerator Laboratory. The purpose of this system is to provide precise measurements of the E-field, and to make it possible to correct for 3D spatial distortions due to E-field non-uniformities. Here we describe the methodology developed for deriving spatial distortions, the drift velocity and the E-field from UV-laser measurements.

Files

bib-91ab1981-2ba4-4995-9e88-7392c0a3764a.txt

Files (430 Bytes)

Name Size Download all
md5:4bcfa88366247ee70a8b72d8785e8a89
430 Bytes Preview Download