CERN Accelerating science

Article
Report number	arXiv:1409.5592
Title	Experimental observation of an extremely high electron lifetime with the ICARUS-T600 LAr-TPC
Author(s)	Antonello, M ; Baibussinov, B ; Benetti, P ; Boffelli, F ; Bubak, A ; Calligarich, E ; Centro, S ; Cesana, A ; Cieslik, K ; Cline, D B ; Cocco, A G ; Dabrowska, A ; Dermenev, A ; Dolfini, R ; Falcone, A ; Farnese, C ; Fava, A ; Ferrari, A (CERN) ; Fiorillo, G ; Gibin, D ; Gninenko, S ; Guglielmi, A ; Haranczyk, M ; Holeczek, J ; Kirsanov, M ; Kisiel, J ; Kochanek, I ; Lagoda, J ; Mania, S ; Menegolli, A ; Meng, G ; Montanari, C ; Otwinowski, S ; Picchi, P ; Pietropaolo, F ; Plonski, P ; Rappoldi, A ; Raselli, G L ; Rossella, M ; Rubbia, C (CERN) ; Sala, P ; Scaramelli, A ; Segreto, E ; Sergiampietri, F ; Stefan, D ; Sulej, R ; Szarska, M ; Terrani, M ; Torti, M ; Varanini, F ; Ventura, S ; Vignoli, C ; Wang, H ; Yang, X ; Zalewska, A ; Zani, A ; Zaremba, K
Publication	2014
Imprint	19 Sep 2014
Note	Comments: to be submitted to JINST
In:	JINST 9 (2014) P12006
DOI	10.1088/1748-0221/9/12/P12006
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CNGS ; ICARUS
Abstract	The ICARUS T600 detector, the largest liquid Argon Time Projection Chamber (LAr-TPC) realized after many years of RD activities, was installed and successfully operated for 3 years at the INFN Gran Sasso underground Laboratory. One of the most important issues was the need of an extremely low residual electronegative impurity content in the liquid Argon, in order to transport the free electrons created by the ionizing particles with a very small attenuation along the drift path. The solutions adopted for the Argon re-circulation and purification systems have permitted to reach impressive results in terms of Argon purity and a free electron lifetime exceeding 15 ms, corresponding to about 20 parts per trillion of equivalent O2 contamination, a milestone for any future project involving LAr-TPC's and the development of higher detector mass scales.
Copyright/License	publication: © 2014-2024 CERN (License: CC-BY-3.0)

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