Measurement of through-going particle momentum by means of multiple scattering with the ICARUS T600 TPC |
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| Institution: | (1) Institute of Theoretical Physics, Wrocław University, Wrocław, Poland;(2) Gruppo collegato INFN and Dipartimento di Fisica, Università dell’Aquila, L’Aquila, Italy;(3) Laboratori Nazionali del Gran Sasso (LNGS) INFN, Assergi, Italy;(4) Institute for Particle Physics, ETH H?nggerberg, Zürich, Switzerland;(5) Dipartimento di Fisica, Università di Padova and INFN, Padova, Italy;(6) Dipartimento di Fisica, Università di Milano and INFN, Milano, Italy;(7) Dipartimento di Fisica Nucleare e Teorica, Università di Pavia and INFN, via Bassi 6, 27100 Pavia, Italy;(8) Departamento de Física Teórica y del Cosmos and Centro Andaluz de Física de Partículas Elementales (CAFPE), Universidad de Granada, Granada, Spain;(9) Dipartimento di Scienze Fisiche, Università Federico II di Napoli and INFN, Napoli, Italy;(10) CERN, Genève, Switzerland;(11) Dipartimento di Ingegneria Nucleare, Politecnico di Milano and INFN, Milano, Italy;(12) Department of Physics and Astronomy, University of California, Los Angeles, USA;(13) H. Niewodniczański Institute of Nuclear Physics, Kraków, Poland;(14) Departamento de Investigacion Basica, CIEMAT, Madrid, Spain;(15) Institute of Physics, University of Silesia, Katowice, Poland;(16) Institute of Experimental Physics, University of Warszawa, Warszawa, Poland;(17) A. Sołtan Institute for Nuclear Studies, Warszawa, Poland;(18) Laboratori Nazionali di Frascati (LNF) INFN, Frascati, Italy;(19) Department of Electronics, AGH University of Science and Technology, Kraków, Poland;(20) INFN, Pisa, Italy;(21) Institute of Radioelectronics, University of Warsaw, Warszawa, Poland |
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| Abstract: | The ICARUS collaboration has demonstrated, following the operation of a 600 ton (T600) detector at shallow depth, that the technique based on liquid argon time projection chambers is now mature. The study of rare events, not contemplated in the standard model, can greatly benefit from the use of this kind of detectors. In particular, a deeper understanding of atmospheric neutrino properties will be obtained thanks to the unprecedented quality of the data ICARUS provides. However if we concentrate on the T600 performance, most of the νμ charged current sample will be partially contained, due to the reduced dimensions of the detector. In this article, we address the problem of how well we can determine the kinematics of events having partially contained tracks. The analysis of a large sample of atmospheric muons collected during the T600 test run demonstrates that, in case the recorded track is at least one meter long, the muon momentum can be reconstructed by an algorithm that measures the multiple Coulomb scattering along the particle’s path. Moreover, we show that momentum resolution can be improved by almost a factor two using an algorithm based on the Kalman filtering technique.PACS 29.40.Gx; 29.85.+c |
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