Measurement of the SMC muon beam polarisation using the asymmetry in the elastic scattering off polarised electrons

被引：15

作者：

Adams, D

Adeva, B

Akdogan, T

Arik, E

Arvidson, A

Badelek, B

Bardin, G

Baum, G

Berglund, P

Betev, L

Birsa, R

Björkholm, P

Bonner, BE

de Botton, N ^{[1
]}

Boutemeur, M

Bradamante, F

Bravar, A

Bressan, A

Bültmann, S

Burtin, E

Cavata, C

Clocchiatti, M

Crabb, D

Cranshaw, J

Çuhadar, T

Dalla Torre, S

van Dantzig, R

Derro, B

Deshpande, A

Dhawan, S

Dulya, C

Dyring, A

Eichblatt, S

Faivre, JC

Fasching, D

Feinstein, F

Fernandez, C

Forthmann, S

Frois, B

Gallas, A

Garzon, JA

Gatignon, L

Gaussiran, T

Gilly, H

Giorgi, M

von Goeler, E

Goertz, S

Golutvin, IA

Gracia, G

de Groot, N

机构：

[1] CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France

[2] Rice Univ, Bonner Lab, Houston, TX 77251 USA

[3] Univ Santiago, Dept Particle Phys, Santiago De Compostela 15706, Spain

[4] Bogazici Univ, Istanbul, Turkey

[5] Istanbul Tech Univ, TR-80626 Istanbul, Turkey

[6] Univ Uppsala, Dept Radiat Sci, S-75121 Uppsala, Sweden

[7] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

[8] Warsaw Univ, PL-00681 Warsaw, Poland

[9] Univ Bielefeld, Dept Phys, D-33501 Bielefeld, Germany

[10] Helsinki Univ Technol, Low Temp Lab, Espoo, Finland

[11] Helsinki Univ Technol, Inst Particle Phys, Espoo, Finland

[12] Univ Munich, Dept Phys, D-80799 Munich, Germany

[13] Ist Nazl Fis Nucl, I-34127 Trieste, Italy

[14] Univ Trieste, Dept Phys, I-34127 Trieste, Italy

[15] Yale Univ, Dept Phys, New Haven, CT 06511 USA

[16] Univ Mainz, Inst Nucl Phys, D-55099 Mainz, Germany

[17] Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA

[18] Delft Univ Technol, NL-1009 AJ Amsterdam, Netherlands

[19] NIKHEF, NL-1009 AJ Amsterdam, Netherlands

[20] FOM, NL-1009 AJ Amsterdam, Netherlands

[21] Free Univ Amsterdam, NL-1009 AJ Amsterdam, Netherlands

[22] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90024 USA

[23] Northwestern Univ, Dept Phys, Evanston, IL 60208 USA

[24] Univ Houston, Dept Phys, Houston, TX 77204 USA

[25] Univ Houston, Inst Beam Particle Dynam, Houston, TX 77204 USA

[26] GKSS, D-21494 Geesthacht, Germany

[27] CERN, CH-1211 Geneva 23, Switzerland

[28] Univ Freiburg, Dept Phys, D-79104 Freiburg, Germany

[29] Ruhr Univ Bochum, Dept Phys, D-44780 Bochum, Germany

[30] Joint Inst Nucl Res Dubna, RU-141980 Dubna, Russia

[31] Nagoya Univ, CIRSE, Chikusa Ku, Nagoya, Aichi 464, Japan

[32] Nagoya Univ, Dept Phys, Chikusa Ku, Nagoya, Aichi 464, Japan

[33] Tel Aviv Univ, Sch Phys, IL-69978 Tel Aviv, Israel

[34] Univ Mons, Fac Sci, B-7000 Mons, Belgium

[35] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

[36] Miyazaki Univ, Fac Engn, Miyazaki 88921, Japan

[37] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[38] RIKEN, Inst Phys & Chem Res, Wako, Saitama 35101, Japan

[39] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[40] Kek Nat Lab High Energy Phys, Tsukuba, Ibaraki 305, Japan

[41] Univ Buenos Aires, Dept Phys, RA-1428 Buenos Aires, DF, Argentina

[42] American Univ, Washington, DC 20016 USA

[43] Brookhaven Natl Lab, Upton, NY 11973 USA

[44] Warsaw Univ Technol, Warsaw, Poland

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 443卷 / 01期

关键词：

muon beam; polarisation measurement; polarised muon; polarised electron; polarised scattering; magnetised target;

D O I：

10.1016/S0168-9002(99)01017-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A muon beam polarimeter was built for the SMC experiment at the CERN SPS, for beam energies of 100 and 190 GeV. The beam polarisation is determined from the asymmetry in the elastic scattering off the polarised electrons of a ferromagnetic target whose magnetisation is periodically reversed. At muon energies of 100 and 190 GeV the measured polarisation is P-mu = -0.80 +/- 0.03 (stat.) +/- 0.02 (syst.) and P-mu = - 0.797 +/- 0.011 (stat.) +/- 0.012 (syst.), respectively. These results agree with measurements of the beam polarisation using a shape analysis of the decay positron energy spectrum. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 19

页数：19

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