학술논문
Pion contamination in the MICE muon beam
Document Type
article
Author
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, J-B; 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
Source
Journal of Instrumentation. 11(03)
Subject
Language
Abstract
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 fπ < 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.