A5050068096- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Muon and positron interactions and applications
- Particle accelerators and beam dynamics
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Electrostatic Discharge in Electronics
- Spacecraft and Cryogenic Technologies
- High-Energy Particle Collisions Research
- Particle Accelerators and Free-Electron Lasers
Imperial College London
2012-2024
Vector (United States)
2023
Geneva College
2012
A facility that can deliver beams of electron and muon neutrinos from the decay a stored beam has potential to unambiguously resolve issue evidence for light sterile arises in short-baseline neutrino oscillation experiments estimates effective number flavors fits cosmological data. In this paper, we show nuSTORM facility, with muons $3.8\text{ }\mathrm{GeV}/\mathrm{c}\text{ }\ifmmode\pm\else\textpm\fi{}\text{ }10%$, will be able carry out conclusive appearance search test LSND MiniBooNE...
A novel single-particle technique to measure emittance has been developed and used characterise seventeen different muon beams for the Muon Ionisation Cooling Experiment (MICE). The beams, whose mean momenta vary from 171 281 MeV/c, have emittances of approximately 1.5--2.3 \pi mm-rad horizontally 0.6--1.0 vertically, a horizontal dispersion 90--190 mm momentum spreads about 25 MeV/c. There is reasonable agreement between measured parameters results simulations. are found meet requirements MICE.
The pion-production target that serves the MICE Muon Beam consists of a titanium cylinder is dipped into halo ISIS proton beam. design and construction system are described along with quality-assurance procedures, electromagnetic drive control systems, readout electronics, data-acquisition system. performance presented together particle rates delivered to Beam. Finally, beam loss in generated by operation evaluated as function rate, operating parameters derived.
The nuSTORM facility has been designed to deliver beams of electron and muon neutrinos from the decay a stored beam with central momentum 3.8 GeV/c spread 10%. is unique in that it will: serve future long- short-baseline neutrino-oscillation programmes by providing definitive measurements electron-neutrino- muon-neutrino-nucleus cross sections percent-level precision; allow searches for sterile exquisite sensitivity be carried out; constitute essential first step incremental development...
The Muon Ionization Cooling Experiment (MICE) will perform a detailed study of ionization cooling to evaluate the feasibility technique. To carry out this program, MICE requires an efficient particle-identification (PID) system identify muons. Electron-Muon Ranger (EMR) is fully-active tracking-calorimeter that forms part PID and tags muons traverse channel without decaying. detector capable identifying electrons with efficiency 98.6%, providing purity for beam exceeds 99.8%. EMR also proved...
The international Muon Ionization Cooling Experiment (MICE) will perform a systematic investigation of ionization cooling with muon beams momentum between 140 and 240\,MeV/c at the Rutherford Appleton Laboratory ISIS facility. measurement in MICE relies on selection pure sample muons that traverse experiment. To make this selection, Beam is designed to deliver beam less than $\sim$1\% contamination. final employs particle-identification (PID) system upstream downstream cell. PID includes...
Abstract Accelerated muon beams have been considered for the next-generation studies of high-energy lepton–antilepton collisions and neutrino oscillations. However, high-brightness not yet produced. The main challenge acceleration storage stems from large phase-space volume occupied by beam, derived production mechanism muons through decay pions. beam can be decreased ionization cooling. Here we show that cooling leads to a reduction in transverse emittance traverse lithium hydride or liquid...
The Muon Ionization Cooling Experiment (MICE) will demonstrate the principle of muon beam phase-space reduction via ionization cooling. cooling be required for proposed Neutrino Factory or Collider. before and after cell must measured precisely. This is achieved using two scintillating-fibre trackers, each placed in a solenoidal magnetic field. paper describes software reconstruction fibre trackers: GEANT4 based simulation; implementation geometry; digitisation; space-point reconstruction;...
High-brightness muon beams of energy comparable to those produced by state-of-the-art electron, proton and ion accelerators have yet be realised. Such the potential carry search for new phenomena in lepton-antilepton collisions extremely high also provide uniquely well-characterised neutrino beams. A beam may created through decay pions interaction a with target. To produce high-brightness from such source requires that phase space volume occupied muons reduced (cooled). Ionization cooling...
The Muon Ionization Cooling Experiment (MICE) collaboration seeks to demonstrate the feasibility of ionization cooling, technique by which it is proposed cool muon beam at a future neutrino factory or collider. emittance measured from an ensemble muons assembled those that pass through experiment. A pure selected using particle-identification system can reject efficiently both pions and electrons. position momentum each are high-precision scintillating-fibre tracker in 4 T solenoidal...
The Muon Ionization Cooling Experiment (MICE) collaboration has developed the MICE Analysis User Software (MAUS) to simulate and analyze experimental data. It serves as primary codebase for experiment, providing offline batch simulation reconstruction well online data quality checks. software provides both traditional particle-physics functionalities such track particle identification, accelerator physics functions, calculating transfer matrices emittances. code design is object orientated,...
Muon beams of low emittance provide the basis for intense, well-characterised neutrino necessary to elucidate physics flavour at a factory and lepton-antilepton collisions energies up several TeV muon collider. The international Ionization Cooling Experiment (MICE) aims demonstrate ionization cooling, technique by which it is proposed reduce phase-space volume occupied beam such facilities. In an ionization-cooling channel, passes through material in loses energy. energy lost then replaced...
The international Muon Ionisation Cooling Experiment (MICE) is designed to demonstrate the principle of muon ionization cooling, for application a future Neutrino Factory or Collider. In order measure change in emittance, MICE equipped with pair high precision scintillating fibre trackers. trackers are required 10% emittance 1% accuracy (giving an overall 0.1%).
Muon beams of low emittance provide the basis for intense, well-characterised neutrino a factory and multi-TeV lepton-antilepton collisions at muon collider. The international Ionization Cooling Experiment (MICE) has demonstrated principle ionization cooling, technique by which it is proposed to reduce phase-space volume occupied beam such facilities. This paper documents performance detectors used in MICE measure muon-beam parameters, physical properties liquid hydrogen energy absorber...
The Muon Ionization Cooling Experiment (MICE) at the Rutherford Appleton Laboratory aims to demonstrate 10% ionization cooling of a muon beam by its interaction with low-Z absorber materials followed restoration longitudinal momentum in RF linacs. MICE Step IV, including rst LH 2 or LiH cell sandwiched between two particle tracking spectrometers, is collaboration's near-term goal. Two large superconducting spectrometer solenoids and one focus coil solenoid will provide magnetic eld 4 T...
The MICE experiment will provide the first measurement of ionisation cooling, a technique suitable for reducing transverse emittance tertiary muon beam in future neutrino factory accelerator facility. is presently final stages commissioning its line. luminosity monitor has proved an invaluable tool throughout this process, providing independent measurements particle rate from target, normalisation line detectors and verification simulation codes.
Multiple Coulomb Scattering (MCS) is a well known phenomenon occurring when charged particles traverse materials. Measurements of muons traversing low $Z$ materials made in the MuScat experiment showed that theoretical models and simulation codes, such as GEANT4 (v7.0), over-estimated scattering. The Muon Ionization Cooling Experiment (MICE) measured cooling muon beam liquid hydrogen or lithium hydride (LiH) energy absorber part programme to develop accelerator facilities, Neutrino Factory...
The results of LSND and MiniBooNE, along with the recent papers on a possible reactor neutrino flux anomaly, give tantalizing hints new physics. Models beyond nSM have been developed to explain these involve one or more additional neutrinos that are non-interacting “sterile. Neutrino beams produced from decay muons in racetrack-like ring provide powerful way study this potential In talk, I will describe facility, nuSTORM, an appropriate far detector for oscillation searches at short...