Proposal for SPS beam time for the baby MIND and TASD neutrino detector prototypes

The design, construction and testing of neutrino detector prototypes at CERN are ongoing activities. This document reports on the design of solid state baby MIND and TASD detector prototypes and outlines requirements for a test beam at CERN to test these, tentatively planned on the H8 beamline in the North Area, which is equipped with a large aperture magnet. The current proposal is submitted to be considered in light of the recently approved projects related to neutrino activities with the SPS in the North Area in the medium term 2015-2020

Совершенствование элементов теории кавитационной диспергации торфа

Humic fertilizers production technologies based on alkaline extraction of humic substances from peat with the subsequent their extraction and cleaning are widely known. Acoustic cavitation to an intensification of processes of crystallization, diffusion, extraction was actively applied in recent 10 years. Technological processes of operation of the ultrasonic generator and a cavitation dispergator are considered. Technical distinctions between them at impact on firm particles of two-component mixes are defined. Theoretical definitions of ultrasonic and hydrodynamic extraction were specified. Mechanism of extraction and its mathematical equation are considered. Features of the hydrodynamic mode of extraction of target components from porous materials what peat is are revealed. It is defined that vortex extraction, extraction in the mode of vacuum boiling and explosive boiling up of an extraction agent, application of mechanical oscillations of suspension, pressure pulsations have the greatest impact on speed of an intensification of diffusion process. It is necessary to improve the diffusive and convective extraction theory by input in mathematical calculations of the additional coefficients considering increase influence of peat suspension temperature in the course of cavitation and activation of a liquid component of suspension on efficiency of diffusive and convective process. It is noted that it is also necessary to enter coefficient of activation of liquid during cavitational processing of peat suspension. A difference of pH indicators before and after activation can be a basis for mathematical calculation of this coefficient. A scientific hypothesis of extraction of humic substances from peat which is used when development of an equipment and technological process for humic fertilizers production on a basis of cavitation was suggested.Технологии производства гуминовых удобрений, основанные на щелочной экстракции гуминовых веществ из торфа с последующим их экстрагированием и очисткой, широко известны. Но в последнее десятилетие активно применяют акустическую кавитацию для интенсификации процессов кристаллизации, диффузии, экстракции. Рассмотрели технологические процессы работы ультразвукового генератора и кавитационного диспергатора. Определили их технические различия при воздействии на твердые частицы двухкомпонентных смесей. Уточнили теоретические определения ультразвуковой и гидродинамической экстракции. Рассмотрели механизм экстрагирования и его математическое уравнение. Выявили особенности гидродинамического режима экстрагирования целевых компонентов из пористых материалов, каким является торф. Определили, что наибольшее влияние на скорость процесса диффузии оказывают вихревое экстрагирование, экстрагирование в режиме вакуумного кипения и взрывного вскипания экстрагента, механические колебания суспензии, пульсация давления. Показали необходимость усовершенствования теории диффузионно-конвективного экстрагирования путем ввода в математические расчеты дополнительных коэффициентов, учитывающих влияние повышения температуры суспензии торфа в процессе кавитации и активации жидкого компонента суспензии на эффективность диффузионно-конвективного процесса. Отметили, что необходимо также ввести коэффициент активации жидкости в процессе кавитационной обработки суспензии торфа. В основу математического расчета данного коэффициента может быть положена разность показателей pH до и после активации. Предложили научную гипотезу экстракции гуминовых веществ из торфа, которая использована при разработке оборудования и технологического процесса по производству гуминовых удобрений на основе кавитаци

Baby MIND Experiment Construction Status

Baby MIND is a magnetized iron neutrino detector, with novel design features, and is planned to serve as a downstream magnetized muon spectrometer for the WAGASCI experiment on the T2K neutrino beam line in Japan. One of the main goals of this experiment is to reduce systematic uncertainties relevant to CP-violation searches, by measuring the neutrino contamination in the anti-neutrino beam mode of T2K. Baby MIND is currently being constructed at CERN, and is planned to be operational in Japan in October 2017.Comment: Poster presented at NuPhys2016 (London, 12-14 December 2016). 4 pages, LaTeX, 7 figure

Baby MIND: A magnetised spectrometer for the WAGASCI experiment

The WAGASCI experiment being built at the J-PARC neutrino beam line will measure the difference in cross sections from neutrinos interacting with a water and scintillator targets, in order to constrain neutrino cross sections, essential for the T2K neutrino oscillation measurements. A prototype Magnetised Iron Neutrino Detector (MIND), called Baby MIND, is being constructed at CERN to act as a magnetic spectrometer behind the main WAGASCI target to be able to measure the charge and momentum of the outgoing muon from neutrino charged current interactions.Comment: Poster presented at NuPhys2016 (London, 12-14 December 2016). Title + 4 pages, LaTeX, 6 figure

Synchronization of the Distributed Readout Frontend Electronics of the Baby MIND Detector

Baby MIND is a new downstream muon range detector for the WGASCI experiment. This article discusses the distributed readout system and its timing requirements. The paper presents the design of the synchronization subsystem and the results of its test

Baby MIND: A magnetized segmented neutrino detector for the WAGASCI experiment

T2K (Tokai-to-Kamioka) is a long-baseline neutrino experiment in Japan designed to study various parameters of neutrino oscillations. A near detector complex (ND280) is located 280~m downstream of the production target and measures neutrino beam parameters before any oscillations occur. ND280's measurements are used to predict the number and spectra of neutrinos in the Super-Kamiokande detector at the distance of 295~km. The difference in the target material between the far (water) and near (scintillator, hydrocarbon) detectors leads to the main non-cancelling systematic uncertainty for the oscillation analysis. In order to reduce this uncertainty a new WAter-Grid-And-SCintillator detector (WAGASCI) has been developed. A magnetized iron neutrino detector (Baby MIND) will be used to measure momentum and charge identification of the outgoing muons from charged current interactions. The Baby MIND modules are composed of magnetized iron plates and long plastic scintillator bars read out at the both ends with wavelength shifting fibers and silicon photomultipliers. The front-end electronics board has been developed to perform the readout and digitization of the signals from the scintillator bars. Detector elements were tested with cosmic rays and in the PS beam at CERN. The obtained results are presented in this paper.Comment: In new version: modified both plots of Fig.1 and added one sentence in the introduction part explaining Baby MIND role in WAGASCI experiment, added information for the affiliation