arXiv : Study of space charge in the ICARUS T600 detector

Antonello, M.; Gibin, D.; Rappoldi, A.; Wang, H.; Rubbia, C.; Dermenev, A.; Gninenko, S.; Sergiampietri, F.; Vignoli, C.; Spanu, M.; Centro, S.; Sala, P.; Guglielmi, A.; Pietropaolo, F.; Holeczek, J.; Scaramelli, A.; Baibussinov, B.; Meng, G.; Fava, A.; Torti, M.; Tortorici, F.; Boffelli, F.; Kirsanov, M.; Szarska, M.; Varanini, F.; Montanari, C.; Falcone, A.; Zani, A.; Bonesini, M.; Lagoda, J.; Cieslik, K.; Haranczyk, M.; Picchi, P.; Menegolli, A.; Petta, C.; Kisiel, J.; Bubak, A.; Farnese, C.; Ventura, S.; Rossella, M.; Ferrari, A.; Dabrowska, A.; Bellini, V.; Zalewska, A.; Cocco, A.G.; Raselli, G.L.; Yang, X.; Kochanek, I.

doi:10.1088/1748-0221/15/07/P07001

Article
Report number	arXiv:2001.08934
Title	Study of space charge in the ICARUS T600 detector
Author(s)	Antonello, M. (INFN, Milan) ; Baibussinov, B. (INFN, Padua ; Padua U.) ; Bellini, V. (Catania U. ; INFN, Catania) ; Boffelli, F. (INFN, Pavia ; Pavia U.) ; Bonesini, M. (INFN, Milan Bicocca ; Milan Bicocca U.) ; Bubak, A. (Silesia U.) ; Centro, S. (INFN, Padua ; Padua U.) ; Cieslik, K. (Cracow, INP) ; Cocco, A.G. (INFN, Naples ; Naples U.) ; Dabrowska, A. (Cracow, INP) ; Dermenev, A. (Moscow, INR) ; Falcone, A. (INFN, Milan Bicocca ; Milan Bicocca U.) ; Farnese, C. (INFN, Padua ; Padua U.) ; Fava, A. (INFN, Padua ; Padua U. ; Fermilab) ; Ferrari, A. (CERN) ; Gibin, D. (INFN, Padua ; Padua U.) ; Gninenko, S. (Moscow, INR) ; Guglielmi, A. (INFN, Padua ; Padua U.) ; Haranczyk, M. (Cracow, INP) ; Holeczek, J. (Silesia U.) ; Kirsanov, M. (Moscow, INR) ; Kisiel, J. (Silesia U.) ; Kochanek, I. (Gran Sasso) ; Lagoda, J. (NCBJ, Swierk) ; Menegolli, A. (INFN, Pavia ; Pavia U.) ; Meng, G. (INFN, Padua ; Padua U.) ; Montanari, C. (INFN, Pavia ; Pavia U.) ; Petta, C. (Catania U. ; INFN, Catania) ; Pietropaolo, F. (CERN ; INFN, Padua ; Padua U.) ; Picchi, P. (INFN, Pavia ; Pavia U.) ; Rappoldi, A. (INFN, Pavia ; Pavia U.) ; Raselli, G.L. (INFN, Pavia ; Pavia U.) ; Rossella, M. (INFN, Pavia ; Pavia U.) ; Rubbia, C. (Gran Sasso ; CERN ; GSSI, Aquila) ; Sala, P. (INFN, Milan ; CERN) ; Scaramelli, A. (INFN, Pavia ; Pavia U.) ; Sergiampietri, F. (CERN) ; Spanu, M. (INFN, Pavia ; Pavia U.) ; Szarska, M. (Cracow, INP ; Brookhaven) ; Torti, M. (INFN, Milan Bicocca ; Milan Bicocca U.) ; Tortorici, F. (Catania U. ; INFN, Catania) ; Varanini, F. (INFN, Padua ; Padua U.) ; Ventura, S. (INFN, Padua ; Padua U.) ; Vignoli, C. (Gran Sasso) ; Wang, H. (UCLA) ; Yang, X. (UCLA) ; Zalewska, A. (Cracow, INP) ; Zani, A. (INFN, Milan)
Publication	2020-07-02
Imprint	2020-01-24
Number of pages	16
Note	16 pages, 11 figures
In:	JINST 15 (2020) P07001
DOI	10.1088/1748-0221/15/07/P07001
Subject category	hep-ex ; Particle Physics - Experiment ; physics.ins-det ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment	ICARUS T600
Abstract	The accumulation of positive ions, produced by ionizing particles crossing Liquid Argon Time Projection Chambers (LAr-TPCs), may generate distortions of the electric drift field affecting the track reconstruction of the ionizing events. These effects could become relevant for large LAr-TPCs operating at surface or at shallow depth, where the detectors are exposed to a copious flux of cosmic rays. A detailed study of such possible field distortions in the ICARUS T600 LAr-TPC has been performed analyzing a sample of cosmic muon tracks recorded with one T600 module operated at surface in 2001. The maximum track distortion turns out to be of few mm in good agreement with the prediction by a numerical calculation. As a cross-check, the same analysis has been performed on a cosmic muon sample recorded during the ICARUS T600 run at the LNGS underground laboratory, where the cosmic ray flux was suppressed by a factor $\sim 10^6$ by 3400 m water equivalent shielding. No appreciable distortion has been observed, confirming that the effects measured on surface are actually due to ion space charge.
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