Analysis of the kinematic boundaries of the quasielastic neutrino-nucleus cross section in the superscaling model with a relativistic effective mass

This work has been partially supported by the former Spanish Ministerio de Economia y Competitividad and ERDF (European Regional Development Fund) under Contract No. FIS2017-85053-C2-1P, by the Junta de Andalucía Grant No. FQM225, by Contract No. PID2020– 114767 GB-I00 funded by MCIN/ AEI /10.13039/ 501100011033, and by the Russian Science Foundation Grant No. 18-12-00271.In this work we obtain the analytical expressions for the boundaries of the charged current quasielastic (CCQE) double differential cross section in terms of dimensionless energy and momentum transfers, for the Relativistic Fermi Gas (RFG) and the Superscaling approach with relativistic effective mass (SuSAM∗) models, within the scaling formalism. In addition, we show that this double differential cross section in the scaling formalism has very good properties to be implemented in the Monte Carlo (MC) neutrino event generators, particularly because its peak is almost flat with the (anti)neutrino energy. This makes it especially well suited for the event generation by the acceptance-rejection method usually used in the neutrino generators. Finally, we analyze the total CCQE cross section σ(Eν) for both models and attribute the enhancement observed in the SuSAM∗ total cross section to the high-momentum components which are present, in a phenomenological way, in its scaling function, while these are absent in the RFG model.Spanish Ministerio de Economia y CompetitividadEuropean Regional Development FundJunta de AndalucíaRussian Science Foundatio

Letter of interest for a neutrino beam from Protvino to KM3NeT/ORCA

The Protvino accelerator facility located in the Moscow region, Russia, is in a good position to offer a rich experimental research program in the field of neutrino physics. Of particular interest is the possibility to direct a neutrino beam from Protvino towards the KM3NeT/ORCA detector, which is currently under construction in the Mediterranean Sea 40 km offshore Toulon, France. This proposal is known as P2O. Thanks to its baseline of 2595 km, this experiment would yield an unparalleled sensitivity to matter effects in the Earth, allowing for the determination of the neutrino mass ordering with a high level of certainty after only a few years of running at a modest beam intensity of ≈ 90 kW. With a prolonged exposure (≈1500 kWyear), a 2σ sensitivity to the leptonic CP-violating Dirac phase can be achieved. A second stage of the experiment, comprising a further intensity upgrade of the accelerator complex and a densified version of the ORCA detector (Super-ORCA), would allow for up to a 6σ sensitivity to CP violation and a 10º−17º resolution on the CP phase after 10 years of running with a 450 kW beam, competitive with other planned experiments. The initial composition and energy spectrum of the neutrino beam would need to be monitored by a near detector, to be constructed several hundred meters downstream from the proton beam target. The same neutrino beam and near detector set-up would also allow for neutrino-nucleus cross section measurements to be performed. A short-baseline sterile neutrino search experiment would also be possible

Monitoring of multiphase flows for different applications

The report shows experience in implementing two-phase flow-meters for helium, hydrogen, liquefied natural gas (LNG), and oil-salty/formation water mixtures. Two types of such devices are presented. The first type is flow-meters based on combination of a void fraction RF-sensor and a narrowing device. They can be applied for superconducting accelerators cooled with two-phase helium, refueling hydrogen system for space ships and oil production industry. The second one is based on combination of a gamma-densitometer and a narrowing device. These systems can be used for the diagnostics of LNG and oil-formation water flows. A measuring system based on a modular industrial computer is described as well. The metrological characteristics for different flow-meters are presented and the results obtained are discussed. It is also shown that the experience gained allows separationless flow-meters for three-phase oil-gas-formation water flows to be produced.Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016

Letter of interest for a neutrino beam from Protvino to KM3NeT/ORCA

The Protvino accelerator facility located in the Moscow region, Russia, is in a good position to offer a rich experimental research program in the field of neutrino physics. Of particular interest is the possibility to direct a neutrino beam from Protvino towards the KM3NeT/ORCA detector, which is currently under construction in the Mediterranean Sea 40 km offshore Toulon, France. This proposal is known as P2O. Thanks to its baseline of 2595 km, this experiment would yield an unparalleled sensitivity to matter effects in the Earth, allowing for the determination of the neutrino mass ordering with a high level of certainty after only a few years of running at a modest beam intensity of ≈90kW. With a prolonged exposure (≈1500kWyear), a 2 σ sensitivity to the leptonic CP-violating Dirac phase can be achieved. A second stage of the experiment, comprising a further intensity upgrade of the accelerator complex and a densified version of the ORCA detector (Super-ORCA), would allow for up to a 6 σ sensitivity to CP violation and a 10 ∘- 17 ∘ resolution on the CP phase after 10 years of running with a 450 kW beam, competitive with other planned experiments. The initial composition and energy spectrum of the neutrino beam would need to be monitored by a near detector, to be constructed several hundred meters downstream from the proton beam target. The same neutrino beam and near detector set-up would also allow for neutrino-nucleus cross section measurements to be performed. A short-baseline sterile neutrino search experiment would also be possible. © 2019, The Author(s)