A Method to Determine the Electric Field of Liquid Argon Time Projection Chambers Using a UV Laser System and its Application in MicroBooNE
Abstract
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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Cite
@article{arxiv.1910.01430,
title = {A Method to Determine the Electric Field of Liquid Argon Time Projection Chambers Using a UV Laser System and its Application in MicroBooNE},
author = {MicroBooNE collaboration and C. Adams and M. Alrashed and R. An and J. Anthony and J. Asaadi and A. Ashkenazi and S. Balasubramanian and B. Baller and C. Barnes and G. Barr and V. Basque and M. Bass and F. Bay and S. Berkman and A. Bhanderi and A. Bhat and M. Bishai and A. Blake and T. Bolton and L. Camilleri and D. Caratelli and I. Caro Terrazas and R. Carr and R. Castillo Fernandez and F. Cavanna and G. Cerati and Y. Chen and E. Church and D. Cianci and E. O. Cohen and J. M. Conrad and M. Convery and L. Cooper-Troendle and J. I. Crespo-Anadon and M. Del Tutto and D. Devitt and A. Diaz and L. Domine and K. Duffy and S. Dytman and B. Eberly and A. Ereditato and L. Escudero Sanchez and J. J. Evans and R. S. Fitzpatrick and B. T. Fleming and N. Foppiani and D. Franco and A. P. Furmanski and D. Garcia-Gamez and S. Gardiner and V. Genty and D. Goeldi and S. Gollapinni and O. Goodwin and E. Gramellini and P. Green and H. Greenlee and R. Grosso and L. Gu and W. Gu and R. Guenette and P. Guzowski and P. Hamilton and O. Hen and C. Hill and G. A. Horton-Smith and A. Hourlier and E. C. Huang and R. Itay and C. James and J. Jan de Vries and X. Ji and L. Jiang and J. H. Jo and R. A. Johnson and J. Joshi and Y. J. Jwa and G. Karagiorgi and W. Ketchum and B. Kirby and M. Kirby and T. Kobilarcik and I. Kreslo and I. Lepetic and Y. Li and A. Lister and B. R. Littlejohn and S. Lockwitz and D. Lorca and W. C. Louis and M. Luethi and B. Lundberg and X. Luo and A. Marchionni and S. Marcocci and C. Mariani and J. Marshall and J. Martin-Albo and D. A. Martinez Caicedo and K. Mason and A. Mastbaum and N. McConkey and V. Meddage and T. Mettler and K. Miller and J. Mills and K. Mistry and T. Mohayai and A. Mogan and J. Moon and M. Mooney and C. D. Moore and J. Mousseau and M. Murphy and R. Murrells and D. Naples and R. K. Neely and P. Nienaber and J. Nowak and O. Palamara and V. Pandey and V. Paolone and A. Papadopoulou and V. Papavassiliou and S. F. Pate and A. Paudel and Z. Pavlovic and E. Piasetzky and D. Porzio and S. Prince and G. Pulliam and X. Qian and J. L. Raaf and V. Radeka and A. Rafique and L. Ren and L. Rochester and H. E. Rogers and M. Ross-Lonergan and C. Rudolf von Rohr and B. Russell and G. Scanavini and D. W. Schmitz and A. Schukraft and W. Seligman and M. H. Shaevitz and R. Sharankova and J. Sinclair and A. Smith and E. L. Snider and M. Soderberg and S. Soldner-Rembold and S. R. Soleti and P. Spentzouris and J. Spitz and M. Stancari and J. St. John and T. Strauss and K. Sutton and S. Sword-Fehlberg and A. M. Szelc and N. Tagg and W. Tang and K. Terao and R. T. Thornton and M. Toups and Y. -T. Tsai and S. Tufanli and M. A. Uchida and T. Usher and W. Van De Pontseele and R. G. Van de Water and B. Viren and M. Weber and H. Wei and D. A. Wickremasinghe and Z. Williams and S. Wolbers and T. Wongjirad and K. Woodruff and M. Wospakrik and W. Wu and T. Yang and G. Yarbrough and L. E. Yates and G. P. Zeller and J. Zennamo and C. Zhang},
journal= {arXiv preprint arXiv:1910.01430},
year = {2020}
}