- Adams, D
- Alekou, A
- Apollonio, M
- Asfandiyarov, R
- Barber, G
- Barclay, P
- De Bari, A
- Bayes, R
- Bayliss, V
- Bertoni, R
- Blackmore, VJ
- Blondel, A
- Blot, S
- Bogomilov, M
- Bonesini, M
- Booth, CN
- Bowring, D
- Boyd, S
- Brashaw, TW
- Bravar, U
- Bross, AD
- Capponi, M
- Carlisle, T
- Cecchet, G
- Charnley, C
- Chignoli, F
- Cline, D
- Cobb, JH
- Colling, G
- Collomb, N
- Coney, L
- Cooke, P
- Courthold, M
- Cremaldi, LM
- Demello, A
- Dick, A
- Dobbs, A
- Dornan, P
- Drews, M
- Drielsma, F
- Filthaut, F
- Fitzpatrick, T
- Franchini, P
- Francis, V
- Fry, L
- Gallagher, A
- Gamet, R
- Gardener, R
- Gourlay, S
- Grant, A
- Greis, JR
- Griffiths, S
- Hanlet, P
- Hansen, OM
- Hanson, GG
- Hart, TL
- Hartnett, T
- Hayler, T
- Heidt, C
- Hills, M
- Hodgson, P
- Hunt, C
- Iaciofano, A
- Ishimoto, S
- Kafka, G
- Kaplan, DM
- Karadzhov, Y
- Kim, YK
- Kuno, Y
- Kyberd, P
- Lagrange, JB
- Langlands, J
- Lau, W
- Leonova, M
- Li, D
- Lintern, A
- Littlefield, M
- Long, K
- Luo, T
- Macwaters, C
- Martlew, B
- Martyniak, J
- Mazza, R
- Middleton, S
- Moretti, A
- Moss, A
- Muir, A
- Mullacrane, I
- Nebrensky, JJ
- Neuffer, D
- Nichols, A
- Nicholson, R
- Nugent, JC
- Oates, A
- Onel, Y
- Orestano, D
- Overton, E
- Owens, P
- Palladino, V
- Pasternak, J
- et al.
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 < 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. π