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In this paper, we present the physics performance of the ESSnuSB experiment in the standard three flavor scenario using the updated neutrino flux calculated specifically for the ESSnuSB configuration and updated migration matrices for the far detecto r. Taking conservative systematic uncertainties corresponding to a normalization error of $5%$ for signal and $10%$ for background, we find that there is $10sigma$ $(13sigma)$ CP violation discovery sensitivity for the baseline option of 540 km (360 km) at $delta_{rm CP} = pm 90^circ$. The corresponding fraction of $delta_{rm CP}$ for which CP violation can be discovered at more than $5 sigma$ is $70%$. Regarding CP precision measurements, the $1sigma$ error associated with $delta_{rm CP} = 0^circ$ is around $5^circ$ and with $delta_{rm CP} = -90^circ$ is around $14^circ$ $(7^circ)$ for the baseline option of 540 km (360 km). For hierarchy sensitivity, one can have $3sigma$ sensitivity for 540 km baseline except $delta_{rm CP} = pm 90^circ$ and $5sigma$ sensitivity for 360 km baseline for all values of $delta_{rm CP}$. The octant of $theta_{23}$ can be determined at $3 sigma$ for the values of: $theta_{23} > 51^circ$ ($theta_{23} < 42^circ$ and $theta_{23} > 49^circ$) for baseline of 540 km (360 km). Regarding measurement precision of the atmospheric mixing parameters, the allowed values at $3 sigma$ are: $40^circ < theta_{23} < 52^circ$ ($42^circ < theta_{23} < 51.5^circ$) and $2.485 times 10^{-3}$ eV$^2 < Delta m^2_{31} < 2.545 times 10^{-3}$ eV$^2$ ($2.49 times 10^{-3}$ eV$^2 < Delta m^2_{31} < 2.54 times 10^{-3}$ eV$^2$) for the baseline of 540 km (360 km).
The Double Triple Bend Achromat (DTBA) lattice~cite{DTBAipac16} is a novel lattice design for a next generation 3 GeV Synchrotron Light Source. Starting from a modification of the Hybrid Multi Bend Achromat (HMBA) lattice~cite{ESRF} developed at ESRF and inspired by the Double-Double Bend Achromat (DDBA) lattice~cite{Diamond1, Diamond2} developed at Diamond, DTBA combines the advantages of both cells. The typical MBA lattice cells have one straight section dedicated to an insertion device, whereas this new cell layout has two such drifts, thus increasing the fraction of available space for the installation of insertion devices. The DTBA lattice achieves an emittance of $simmathrm{132~pm}$, a dynamic aperture of $mathrm{simpm10pm1~mm}$ (calculated at the injection point), an injection efficiency of $mathrm{simmathrm88pm5%}$ and a lifetime of $mathrm{1.4pm0.2~h}$ with errors. The characteristics of DTBA, the methodology and results of the linear and non-linear optics optimisations, with and without the presence of errors, are presented in detail.
The international Muon Ionization Cooling Experiment (MICE) will perform a systematic investigation of ionization cooling with muon beams of momentum between 140 and 240,MeV/c at the Rutherford Appleton Laboratory ISIS facility. The measurement of io nization cooling in MICE relies on the selection of a pure sample of muons that traverse the experiment. To make this selection, the MICE Muon Beam is designed to deliver a beam of muons with less than $sim$1% contamination. To make the final muon selection, MICE employs a particle-identification (PID) system upstream and downstream of the cooling cell. The PID system includes time-of-flight hodoscopes, threshold-Cherenkov counters and calorimetry. The upper limit for the pion contamination measured in this paper is $f_pi < 1.4%$ at 90% C.L., including systematic uncertainties. Therefore, the MICE Muon Beam is able to meet the stringent pion-contamination requirements of the study of ionization cooling.
The Muon Ionization Cooling Experiment (MICE) will perform a detailed study of ionization cooling to evaluate the feasibility of the technique. To carry out this program, MICE requires an efficient particle-identification (PID) system to identify muo ns. The Electron-Muon Ranger (EMR) is a fully-active tracking-calorimeter that forms part of the PID system and tags muons that traverse the cooling channel without decaying. The detector is capable of identifying electrons with an efficiency of 98.6%, providing a purity for the MICE beam that exceeds 99.8%. The EMR also proved to be a powerful tool for the reconstruction of muon momenta in the range 100-280 MeV/$c$.
The next generation of lepton flavor violation experiments need high intensity and high quality muon beams. Production of such beams requires sending a short, high intensity proton pulse to the pion production target, capturing pions and collecting t he resulting muons in the large acceptance transport system. The substantial increase of beam quality can be obtained by applying the RF phase rotation on the muon beam in the dedicated FFAG ring, which was proposed for the PRISM project.This allows to reduce the momentum spread of the beam and to purify from the unwanted components like pions or secondary protons. A PRISM Task Force is addressing the accelerator and detector issues that need to be solved in order to realize the PRISM experiment. The parameters of the required proton beam, the principles of the PRISM experiment and the baseline FFAG design are introduced. The spectrum of alternative designs for the PRISM FFAG ring are shown. Progress on ring main systems like injection and RF are presented. The current status of the study and its future directions are discussed.
The International Design Study for the Neutrino Factory (the IDS-NF) was established by the community at the ninth International Workshop on Neutrino Factories, super-beams, and beta- beams which was held in Okayama in August 2007. The IDS-NF mandate is to deliver the Reference Design Report (RDR) for the facility on the timescale of 2012/13. In addition, the mandate for the study [3] requires an Interim Design Report to be delivered midway through the project as a step on the way to the RDR. This document, the IDR, has two functions: it marks the point in the IDS-NF at which the emphasis turns to the engineering studies required to deliver the RDR and it documents baseline concepts for the accelerator complex, the neutrino detectors, and the instrumentation systems. The IDS-NF is, in essence, a site-independent study. Example sites, CERN, FNAL, and RAL, have been identified to allow site-specific issues to be addressed in the cost analysis that will be presented in the RDR. The choice of example sites should not be interpreted as implying a preferred choice of site for the facility.
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