Measurement of the SMC muon beam polarization using the asymmetry in the elastic scattering off polarized electrons

D. Adams, B. Adeva, T. Akdogan, E. Arik, A. Arvidson, B. Badelek, G. Bardin, G. Baum, P. Berglund, L. Betev, R. Birsa, P. Björkholm, B. E. Bonner, N. de Botton, M. Boutemeur, F. Bradamante, A. Bravar, A. Bressan, S. Bültmann, E. BurtinC. Cavata, M. Clocchiatti, D. Crabb, J. Cranshaw, T. Çuhadar, S. Dalla Torre, R. van Dantzig, B. Derro, A. Deshpande, S. Dhawan, C. Dulya, A. Dyring, S. Eichblatt, J. C. Faivre, D. Fasching, F. Feinstein, C. Fernandez, S. Forthmann, B. Frois, A. Gallas, J. A. Garzon, L. Gatignon, T. Gaussiran, H. Gilly, M. Giorgi, E. von Goeler, S. Goertz, I. A. Golutvin, G. Gracia, N. de Groot, M. Grosse Perdekamp, K. Haft, D. von Harrach, T. Hasegawa, P. Hautle, N. Hayashi, C. A. Heusch, N. Horikawa, V. W. Hughes, G. Igo, S. Ishimoto, T. Iwata, E. M. Kabub, T. Kageya, A. Karev, H. J. Kessler, T. J. Ketel, J. Kiryluk, I. Kiryushin, A. Kishi, Yu Kisselev, L. Klostermann, D. Kramer, V. Krivokhijine, W. Kroger, V. Kukhtin, K. Kurek, J. Kyynäräinen, M. Lamanna, U. Landgra, J. M. Le Goff, F. Lehar, A. de Lesquen, J. Lichtenstadt, T. Lindqvist, M. Litmaath, M. Lowe, A. Magnon, G. K. Mallot, F. Marie, A. Martin, J. Martino, T. Matsuda, B. Mayes, J. S. McCarthy, K. Medved, W. Meyer, G. van Middelkoop, D. Miller, Y. Miyachi

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11 Citations (Scopus)

Abstract

A muon beam polarimeter was built for the SMC experiment at the CERN SPS, for beam energies of 100 and 190 GeV. The beam polarization is determined from the asymmetry in the elastic scattering off the polarized electrons of a ferromagnetic target whose magnetization is periodically reversed. At muon energies of 100 and 190 GeV the measured polarization is Pμ = -0.80±0.03 (stat.)±0.02 (syst.) and Pμ = -0.797±0.011 (stat.)±0.012 (syst.), respectively. These results agree with measurements of the beam polarization using a shape analysis of the decay positron energy spectrum.
Original languageEnglish
Pages (from-to)1-19
Number of pages19
JournalNuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume443
Issue number1
DOIs
Publication statusPublished - 21 Mar 2000
MoE publication typeA1 Journal article-refereed

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