Weber, Michele; Ereditato, Antonio; Kreslo, Igor; Chen, Yifan; Lorca Galindo, David; Mettler, Thomas Josua; Sinclair, James Robert (2020). A method to determine the electric field of liquid argon time projection chambers using a UV laser system and its application in MicroBooNE. Journal of instrumentation, 15(07), P07010-P07010. Institute of Physics Publishing IOP 10.1088/1748-0221/15/07/P07010
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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.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Weber, Michele, Ereditato, Antonio, Kreslo, Igor, Chen, Yifan, Lorca Galindo, David, Mettler, Thomas Josua, Sinclair, James Robert |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1748-0221 |
Publisher: |
Institute of Physics Publishing IOP |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
07 Jun 2021 17:29 |
Last Modified: |
02 Mar 2023 23:34 |
Publisher DOI: |
10.1088/1748-0221/15/07/P07010 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt |
BORIS DOI: |
10.48350/155603 |
URI: |
https://boris.unibe.ch/id/eprint/155603 |
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