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h1. Pion contamination in the MICE muon beam 

h2. Abstract

bq. 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 ionization 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 ~ 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.

h2. Paper

Published in:  Forthcoming

arXiv: "1511.00556":http://arxiv.org/pdf/1511.00556v2.pdf

RAL Preprint: RAL-P-2015-009

DOI: Forthcoming

"BibTeX":http://micewww.pp.rl.ac.uk/attachments/5576/pion_contamination.bib

"References":http://micewww.pp.rl.ac.uk/attachments/5586/Pion-paper.bbl

"Source":http://micewww.pp.rl.ac.uk/attachments/5587/1511.00556v2.tar

h2. Figures