Measurement of the longitudinal diffusion of ionization electrons in the MicroBooNE detector

Accurate knowledge of electron transport properties is vital to understanding the information provided by liquid argon time projection chambers (LArTPCs). Ionization electron drift-lifetime, local electric field distortions caused by positive ion accumulation, and electron diffusion can all signific...

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Veröffentlicht in:	Journal of instrumentation 2021-09, Vol.16 (9)
Hauptverfasser:	Abratenko, P., Anthony, J., Ashkenazi, A., Basque, V., Bathe-Peters, L., Berkman, S., Bhanderi, A., Bhat, A., Bishai, M., Bolton, T., Caratelli, D., Caro Terrazas, I., Cerati, G., Cianci, D., Convery, M., Cooper-Troendle, L., Crespo-Anadón, J. I., Del Tutto, M., Dennis, S. R., Dorrill, R., Evans, J. J., Fine, R., Fiorentini Aguirre, G. A., Franco, D., Furmanski, A. P., Goodwin, O., Gramellini, E., Gu, W., Hagaman, L., Horton-Smith, G. A., Ji, X., Jo, J. H., Johnson, R. A., Jwa, Y. -J., Karagiorgi, G., Kirby, M., Kobilarcik, T., Kreslo, I., LaZur, R., Lepetic, I., Li, K., Li, Y., Lin, K., Littlejohn, B. R., Louis, W. C., Manivannan, K., Martinez Caicedo, D. A., Mastbaum, A., Meddage, V., Mettler, T., Miller, K., Mogan, A., Moon, J., Mooney, M., Moor, A. F., Mora Lepin, L., Mousseau, J., Naples, D., Neely, R. K., Nowak, J., Nunes, M., Paolone, V., Papadopoulou, A., Papavassiliou, V., Pate, S. F., Paudel, A., Ponce-Pinto, I. D., Qian, X., Raaf, J. L., Radeka, V., Rafique, A., Reggiani-Guzzo, M., Ren, L., Rice, L. C.J., Rochester, L., Ross-Lonergan, M., Schukraft, A., Shaevitz, M. H., Sinclair, J., Spentzouris, P., Spitz, J., Stancari, M., St. John, J., Strauss, T., Sutton, K., Szelc, A. M., Thorpe, C., Toups, M., Usher, T., Van De Pontseele, W., Viren, B., Weber, M., Williams, Z., Wongjirad, T., Wright, N., Yandel, E., Yarbrough, G., Yates, L. E., Zeller, G. P., Zhang, C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Nuclear Particle physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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Zusammenfassung:	Accurate knowledge of electron transport properties is vital to understanding the information provided by liquid argon time projection chambers (LArTPCs). Ionization electron drift-lifetime, local electric field distortions caused by positive ion accumulation, and electron diffusion can all significantly impact the measured signal waveforms. This paper presents a measurement of the effective longitudinal electron diffusion coefficient, DL, in MicroBooNE at the nominal electric field strength of 273.9 V/cm. Historically, this measurement has been made in LArTPC prototype detectors. This represents the first measurement in a large-scale (85 tonne active volume) LArTPC operating in a neutrino beam. This is the largest dataset ever used for this measurement. Using a sample of ~70,000 through-going cosmic ray muon tracks tagged with MicroBooNE's cosmic ray tagger system, we measure DL = 3.74+0.28-0.29 cm2/s.
ISSN:	1748-0221 1748-0221