CERN Accelerating science

Article
Report number	hep-ex/0304018 ; LNGS-EXP-2003-05
Title	CNGS beam monitor with the LVD detector
Author(s)	Aglietta, M (IFSI, Turin ; INFN, Turin) ; Antonioli, P (INFN, Bologna ; Bologna U.) ; Bari, G (INFN, Bologna ; Bologna U.) ; Castagnoli, C (IFSI, Turin ; INFN, Turin) ; Fulgione, W (IFSI, Turin ; INFN, Turin) ; Galeotti, P (IFSI, Turin ; INFN, Turin) ; Garbini, M (INFN, Bologna ; Bologna U.) ; Ghia, P L (IFSI, Turin ; INFN, Turin) ; Giusti, P (INFN, Bologna ; Bologna U.) ; Kemp, E (Campinas State U.) ; Malguin, A S (Moscow, INR) ; Menghetti, H (INFN, Bologna ; Bologna U.) ; Pesci, A (INFN, Bologna ; Bologna U.) ; Pless, I A (MIT) ; Porta, A (IFSI, Turin ; INFN, Turin) ; Ryasny, V G (Moscow, INR) ; Ryazhskaya, O G (Moscow, INR) ; Saavedra, O (IFSI, Turin ; INFN, Turin) ; Sartorelli, G (INFN, Bologna ; Bologna U.) ; Selvi, M (INFN, Bologna ; Bologna U.) ; Vigorito, C (IFSI, Turin ; INFN, Turin) ; Votano, L (Frascati) ; Yakushev, V F (Moscow, INR) ; Zatsepin, G T (Moscow, INR) ; Zichichi, A (INFN, Bologna ; Bologna U.)
Publication	2004
Imprint	11 Apr 2003
Number of pages	15
Note	Comments: 15 pages, 11 figures, submitted to Nucl. Instr. Meth. Phys. Res. A
In:	Nucl. Instrum. Methods Phys. Res., A 516 (2004) 96-103
DOI	10.1016/j.nima.2003.07.068
Subject category	Detectors and Experimental Techniques
Abstract	The importance of an adequate CNGS beam monitor at the Gran Sasso Laboratory has been stressed in many papers. Since the number of internal $\nu_\mu$ CC and NC interactions in the various detectors will not allow to collect statistics rapidly, one should also be able to detect the $\nu_\mu$ CC interactions in the upstream rock. In this study we have investigated the performances of the LVD detector as a monitor for the CNGS neutrino beam. Thanks to its wide area ($13 \times 11 m^2$ orthogonal to the beam direction) LVD can detect about 120 muons per day originated by $\nu_\mu$ CC interactions in the rock. The LVD total mass is $\sim2 kt$. This allows to get 30 more CNGS events per day as internal $(NC + CC)$ $\nu_\mu$ interactions, for a total of $\sim 150$ events per day. A 3% statistical error can be reached in 7 days. Taking into account the time characteristics of the CNGS beam, the cosmic muon background can be reduced to a negligible level, of the order of 1.5 events per day.

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