Improvement of time measurement with the INO-ICAL resistive plate chambers

Bhatt, A.; Datar, V. M.; Majumder, G.; Mondal, N. K.; Pathaleswar, Pathaleswar; Satyanarayana, B.

doi:10.1088/1748-0221/11/11/c11001

Cited by 13 publications

(12 citation statements)

References 6 publications

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“…stem radius 5.1 mm and paddle radius 5.5 mm with its center at X = Y = 40 mm. Similar kind of surface maps were found from experiments also [17,18].…”

Section: Effect Of Geometrical Parameterssupporting

confidence: 84%

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Numerical studies on effect of operating conditions and geometrical components on the timing response and efficiency of RPC

et al. 2019

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A detailed numerical simulation has been performed to investigate the timing properties of a standard RPC geometry in order to optimize its application in INO-ICAL experiment designed for studying atmospheric neutrinos. The timing information provided by the RPC is an important observable in the experiment to determine the direction of the neutrinos. Effects of various operating conditions and design components on the RPC timing response, mainly the average signal arrival time and the time resolution have been studied in this context. The dependence of the detector efficiency on the same parameters has also been presented.

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“…stem radius 5.1 mm and paddle radius 5.5 mm with its center at X = Y = 40 mm. Similar kind of surface maps were found from experiments also [17,18].…”

Section: Effect Of Geometrical Parameterssupporting

confidence: 84%

“…Effect of button spacer on the detection efficiency has been shown by placing a button spacer of stem radius 5.1 mm and paddle radius 5.5 mm with its center at X = Y = 40 mm. Similar kind of surface maps were found from experiments also [17,18].…”

Section: Effect Of Geometrical Parameterssupporting

confidence: 84%

Numerical studies on effect of operating conditions and geometrical components on the timing response and efficiency of RPC

et al. 2019

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“…In the charged-current (CC) interactions of neutrinos, the muon, and hadrons in the final state will be distinguished from their track-like and shower-like features respectively. The time resolution of less than 1 ns for each RPC layer [35][36][37] would enable ICAL to distinguish between upward-going and downward-going events with a high confidence. The direction of bending of the charged muon track will enable the identification of its charge, and hence the identification of whether the original interacting particle was a neutrino or antineutrino.…”

Section: Event Generation At Ical Detectormentioning

confidence: 99%

From oscillation dip to oscillation valley in atmospheric neutrino experiments

et al. 2021

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Atmospheric neutrino experiments can show the “oscillation dip” feature in data, due to their sensitivity over a large L/E range. In experiments that can distinguish between neutrinos and antineutrinos, like INO, oscillation dips can be observed in both these channels separately. We present the dip-identification algorithm employing a data-driven approach – one that uses the asymmetry in the upward-going and downward-going events, binned in the reconstructed L/E of muons – to demonstrate the dip, which would confirm the oscillation hypothesis. We further propose, for the first time, the identification of an “oscillation valley” in the reconstructed ($$E_\mu $$ E μ ,$$\,\cos \theta _\mu $$ cos θ μ ) plane, feasible for detectors like ICAL having excellent muon energy and direction resolutions. We illustrate how this two-dimensional valley would offer a clear visual representation and test of the L/E dependence, the alignment of the valley quantifying the atmospheric mass-squared difference. Owing to the charge identification capability of the ICAL detector at INO, we always present our results using $$\mu ^{-}$$ μ - and $$\mu ^{+}$$ μ + events separately. Taking into account the statistical fluctuations and systematic errors, and varying oscillation parameters over their currently allowed ranges, we estimate the precision to which atmospheric neutrino oscillation parameters would be determined with the 10-year simulated data at ICAL using our procedure.

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“…The upcoming ICAL detector at the India-based Neutrino Observatory (INO) will be composed of 151 layers of magnetized iron plates; the 50 kt iron acting as the target, and around 30,000 glass resistive plate chambers as detection elements. The magnetic field of strength 1.5 Tesla and the time resolution of less than 1 ns [35][36][37] will enable ICAL to distinguish µ − from µ + events in the multi-GeV energy range. In this study, we generate the charged-current interactions of ν µ andν µ , similar to ref.…”

Section: Impact Of Nsi On the Event Distribution At Icalmentioning

confidence: 99%

A new approach to probe non-standard interactions in atmospheric neutrino experiments

Kumar

Khatun

Agarwalla

et al. 2021

J. High Energ. Phys.

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We propose a new approach to explore the neutral-current non-standard neutrino interactions (NSI) in atmospheric neutrino experiments using oscillation dips and valleys in reconstructed muon observables, at a detector like ICAL that can identify the muon charge. We focus on the flavor-changing NSI parameter εμτ, which has the maximum impact on the muon survival probability in these experiments. We show that non-zero εμτ shifts the oscillation dip locations in L/E distributions of the up/down event ratios of reconstructed μ− and μ+ in opposite directions. We introduce a new variable ∆d representing the difference of dip locations in μ− and μ+, which is sensitive to the magnitude as well as the sign of εμτ, and is independent of the value of $$ \Delta {m}_{32}^2 $$ Δ m 32 2 . We further note that the oscillation valley in the (E, cos θ) plane of the reconstructed muon observables bends in the presence of NSI, its curvature having opposite signs for μ− and μ+. We demonstrate the identification of NSI with this curvature, which is feasible for detectors like ICAL having excellent muon energy and direction resolutions. We illustrate how the measurement of contrast in the curvatures of valleys in μ− and μ+ can be used to estimate εμτ. Using these proposed oscillation dip and valley measurements, the achievable precision on |εμτ| at 90% C.L. is about 2% with 500 kt·yr exposure. The effects of statistical fluctuations, systematic errors, and uncertainties in oscillation parameters have been incorporated using multiple sets of simulated data. Our method would provide a direct and robust measurement of εμτ in the multi-GeV energy range.

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Improvement of time measurement with the INO-ICAL resistive plate chambers

Cited by 13 publications

References 6 publications

Numerical studies on effect of operating conditions and geometrical components on the timing response and efficiency of RPC

Numerical studies on effect of operating conditions and geometrical components on the timing response and efficiency of RPC

From oscillation dip to oscillation valley in atmospheric neutrino experiments

A new approach to probe non-standard interactions in atmospheric neutrino experiments

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