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A Method to Determine the Electric Field of Liquid Argon Time Projection Chambers Using a UV Laser System and its Application in MicroBooNE

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arxiv 1910.01430 v2 pith:6FBWTPHP submitted 2019-10-03 physics.ins-det

MicroBooNE collaboration: C. Adams , M. Alrashed , R. An , J. Anthony , J. Asaadi , A. Ashkenazi , S. Balasubramanian , B. Baller
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C. Barnes G. Barr V. Basque M. Bass F. Bay S. Berkman A. Bhanderi A. Bhat M. Bishai A. Blake T. Bolton L. Camilleri D. Caratelli I. Caro Terrazas R. Carr R. Castillo Fernandez F. Cavanna G. Cerati Y. Chen E. Church D. Cianci E.O. Cohen J.M. Conrad M. Convery L. Cooper-Troendle J.I. Crespo-Anadon M. Del Tutto D. Devitt A. Diaz L. Domine K. Duffy S. Dytman B. Eberly A. Ereditato L. Escudero Sanchez J.J. Evans R.S. Fitzpatrick B.T. Fleming N. Foppiani D. Franco A.P. Furmanski D. Garcia-Gamez S. Gardiner V. Genty D. Goeldi S. Gollapinni O. Goodwin E. Gramellini P. Green H. Greenlee R. Grosso L. Gu W. Gu R. Guenette P. Guzowski P. Hamilton O. Hen C. Hill G.A. Horton-Smith A. Hourlier E.C. Huang R. Itay C. James J. Jan de Vries X. Ji L. Jiang J.H. Jo R.A. Johnson J. Joshi Y.J. Jwa G. Karagiorgi W. Ketchum B. Kirby M. Kirby T. Kobilarcik I. Kreslo I. Lepetic Y. Li A. Lister B.R. Littlejohn S. Lockwitz D. Lorca W.C. Louis M. Luethi B. Lundberg X. Luo A. Marchionni S. Marcocci C. Mariani J. Marshall J. Martin-Albo D.A. Martinez Caicedo K. Mason A. Mastbaum N. McConkey V. Meddage T. Mettler K. Miller J. Mills K. Mistry T. Mohayai A. Mogan J. Moon M. Mooney C.D. Moore J. Mousseau M. Murphy R. Murrells D. Naples R.K. Neely P. Nienaber J. Nowak O. Palamara V. Pandey V. Paolone A. Papadopoulou V. Papavassiliou S.F. Pate A. Paudel Z. Pavlovic E. Piasetzky D. Porzio S. Prince G. Pulliam X. Qian J.L. Raaf V. Radeka A. Rafique L. Ren L. Rochester H.E. Rogers M. Ross-Lonergan C. Rudolf von Rohr B. Russell G. Scanavini D.W. Schmitz A. Schukraft W. Seligman M.H. Shaevitz R. Sharankova J. Sinclair A. Smith E.L. Snider M. Soderberg S. Soldner-Rembold S.R. Soleti P. Spentzouris J. Spitz M. Stancari J. St. John T. Strauss K. Sutton S. Sword-Fehlberg A.M. Szelc N. Tagg W. Tang K. Terao R.T. Thornton M. Toups Y.-T. Tsai S. Tufanli M.A. Uchida T. Usher W. Van De Pontseele R.G. Van de Water B. Viren M. Weber H. Wei D.A. Wickremasinghe Z. Williams S. Wolbers T. Wongjirad K. Woodruff M. Wospakrik W. Wu T. Yang G. Yarbrough L.E. Yates G.P. Zeller J. Zennamo C. Zhang
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classification physics.ins-det
keywords e-fielddriftdistortionsmeasurementssystemtimeacceleratoranode
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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 ionized electrons to the anode to be 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 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.

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  1. The UV Laser Calibration System for measuring the Electric field in the SBND

    physics.ins-det 2025-05 conditional novelty 4.0 of 10

    A UV laser calibration system for the SBND liquid argon TPC has been installed and its mirror positioning repeatability measured, intended to map electric field distortions.

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