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Documentation & figures

Integrated triggers

Updated to 2017/02 - PNG


Study of Ionization Cooling with the MICE Experiment (Preliminary)

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Abstract

The international Muon Ionization Cooling Experiment (MICE) will demonstrate the ionization cooling of muons; the only known technique that can provide high brightness muon beams suitable for applications such as a Neutrino Factory or Muon Collider. MICE is underway at the Rutherford Appleton Laboratory and has recently taken the data necessary to characterise the physical processes that underlie the ionization-cooling effect. Measurements of the change in normalised transverse amplitude are presented in two configurations. The measurements of the ionization-cooling effect are discussed.

Paper

Published in: Forthcoming
arXiv: Forthcoming
RAL Preprint: Forthcoming
DOI: Forthcoming

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References
Source

Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5a Fig. 5b


Direct measurement of emittance using the MICE scintillating fibre tracker (Preliminary)

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Abstract

The Muon Ionization Cooling Experiment (MICE) collaboration will demonstrate the feasibility of ionization cooling, the technique by which it is proposed to cool the moun beam at a future neutrino factory or muon collider. The muon beam emittance is measured on a particle-by-particle basis. Mea- surements are made before and after the cooling cell using a high precision scintillating-fibre tracker in a 4T solenoidal field. A pure muon beam is selected using a particle identification system that can reject efficiently both pions and electrons.
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The emittance of the MICE muon beam has been measured for the first time using the scintillating- fibre tracking system. The performance of the tracking and particle identification detectors and the analysis techniques required for this precision measurement are presented.

Paper

Published in: Forthcoming
arXiv: Forthcoming
RAL Preprint: Forthcoming
DOI: Forthcoming

BibTeX
References
Source


Multiple Coulomb Scattering in Lithium Hydride Absorbers (Preliminary)

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Abstract

Multiple coulomb scattering is a well known electromagnetic phenomenon experienced by charged particles traversing materials. However, from recent measurements by the MuScat experiment it is known that the available simulation codes, specifically GEANT4, overestimate the scattering of muons in low Z materials. This is of particular interest to the Muon Ionization Cooling Experiment (MICE) which has the goal of measuring the reduction of a muon beam emittance induced by energy loss in low Z absorbers. Multiple scattering induces positive changes in the emittance in contrast to the reduction due to ionization energy loss. It therefore is essential that MICE measures multiple scattering for its absorber materials; lithium hydride and liquid hydrogen; and validate the multiple scattering against known simulations. MICE took data with magnetic fields off suitable for multiple scattering measurements in the spring of 2016.

Paper

Published in: Forthcoming
arXiv: Forthcoming
RAL Preprint: Forthcoming
DOI: Forthcoming

BibTeX
References
Source


Energy Loss in Lithium Hydride and Hydrogen Absorbers (Preliminary)

Details

Abstract

The cooling term of the ionization cooling equation is given by the "Bethe equation". A better understanding of the equation in hydrogen and lithium hydride is necessary in order to make more realistic predictions of the emittance reduction.
Data has been taken for several different muon beams traversing the lithium hydride absorber.
MICE measures the momentum upstream and downstream of the absorber using information from the trackers combined with measurements of the time of flight.

Paper

Published in: Forthcoming
arXiv: Forthcoming
RAL Preprint: Forthcoming
DOI: Forthcoming

BibTeX
References
Source

Fig. 1 Fig. 2


Layout of the MICE Demonstration of Muon Ionization Cooling (Including Simplified Design)

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Abstract

Muon beams of low emittance provide the basis for the intense, well-characterised neutrino beams necessary to elucidate the physics of flavour at the Neutrino Factory and to provide multi-TeV lepton-antilepton collisions at the Muon Collider. The international Muon Ionization Cooling Exper iment (MICE) will demonstrate muon ionization cooling, the technique proposed to reduce the phase-space volume occupied by the muon beam at such facilities. In an ionization cooling channel, the muon beam traverses a material (the absorber) loosing energy, which is replaced using RF cavities. The combined effect is to reduce the transverse emittance of the beam (transverse cooling). The configuration of MICE required to deliver the demonstration of ionization cooling was prepared in parallel to the execution of a programme designed to measure the cooling properties of liquid-hydrogen and lithium hydride (Step IV). The design will be presented together with a summary of the projected performance of the experiment.

Paper

Published in: Forthcoming - IPAC17 Proc.
arXiv: Forthcoming
RAL Preprint: Forthcoming
DOI: Forthcoming

BibTeX
References
Source


Liquid hydrogen absorber

Online reconstruction of the mean momentum lost by muons as they pass through the liquid-hydrogen absorber. The data were recorded while the absorber was filling.

PDF


Step-4.ai (1.24 MB) Long, Kenneth, 09 February 2015 21:33

Step-4.eps (665 KB) Long, Kenneth, 09 February 2015 21:33

Step-4-labels.ai (1.3 MB) Long, Kenneth, 10 February 2015 09:35

Step-4-labels.eps (971 KB) Long, Kenneth, 10 February 2015 09:35

Step-4-labels.pdf (83.4 KB) Long, Kenneth, 10 February 2015 09:35

Step-4.pdf (52.2 KB) Long, Kenneth, 10 February 2015 09:35

LH2_filling.pdf (12.2 KB) Franchini, Paolo, 06 October 2017 16:12

IntegratedTriggers_Oct2017.png (66.2 KB) Franchini, Paolo, 01 November 2017 13:41