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CNGS beam monitor with the LVD detector
High Energy Physics - Experiment · Submitted 11 Apr 2003
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim A 3% statistical error can be reached in 7 days.
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The abstract, sentence by sentence
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.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The importance of an adequate CNGS beam monitor at the Gran Sasso Laboratory has been stressed in many papers. | background 1.00 | 0.04 | 0.03 | asserted 0.98 |
| s1 | 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. | background 0.70 | 0.08 | 0.05 | hedged possibility 0.54 |
| s2 | In this study we have investigated the performances of the LVD detector as a monitor for the CNGS neutrino beam. | contribution 1.00 | 0.85 | 0.09 | asserted 0.93 |
| s3 | 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. | result 0.87 | 0.73 | 0.13 | asserted 0.91 |
| s4 | The LVD total mass is $\sim2 kt$. | method 0.87 | 0.37 | 0.03 | asserted 1.00 |
| s5 | 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. | result 0.99 | 0.77 | 0.22 | asserted 0.96 |
| s6 | A 3% statistical error can be reached in 7 days. | result 0.99 | 0.75 | 0.19 | asserted 0.98 |
| s7 | 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. | result 0.95 | 0.65 | 0.10 | asserted 0.92 |
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Original 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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