Status of the BNL muon (g-2) experiment

Ralf Prigl, H. N. Brown, G. Bunce, R. M. Carey, P. Cushman, G. T. Danby, P. T. Debevec, H. Deng, W. Deninger, S. K. Dhawan, V. P. Druzhinin, L. Duong, W. Earle, E. Efstathiadis, F. J M Farley, G. V. Fedotovich, S. Giron, F. Gray, M. Grosse Perdekamp, A. GrossmannU. Haeberlen, M. Hare, E. S. Hazen, D. W. Hertzog, V. W. Hughes, M. Iwasaki, K. Jungmann, D. Kawall, M. Kawamura, B. I. Khazin, J. Kindern, F. Krienen, I. Kronkvist, R. Larsen, Y. Y. Lee, W. Liu, I. Logashenko, R. McNabb, W. Meng, J. L. Mi, D. Miller, J. P. Miller, W. M. Morse, P. Neumayer, C. J G Onderwater, Y. Orlov, C. Pai, C. Polly, J. Pretz, G. Zu Putlitz, S. I. Redin, O. Rind, B. L. Roberts, N. Ryskulov, R. Sanders, S. Sedykh, Y. K. Semertzidis, S. Serednyakov, Yu M. Shatunov, E. Solodov, M. Sossong, A. Steinmetz, L. R. Sulak, M. Tanaka, C. Timmermans, A. Trofimov, D. Urner, D. Warburton, D. Winn, A. Yamamoto, D. Zimmerman

Research output: Contribution to journalArticlepeer-review


The union (g-2) experiment at Brookhaven completed a first run in June and July 1997. The main components of the experiment, which include the superconducting inflector, the superferric storage ring, the electrostatic quadrupoles and the lead-scintillating fiber electron calorimeters, have been commissioned satisfactorily. Our first measurement of the ratio R of the spin precession frequency of the positive muon relative to that of a free proton, R =(3.707 219±0.000 048)×10-3, is in good agreement with the previous CERN measurements for μ+ and μ-, and has approximately the same uncertainty as each of these measurements. In spring 1998 a muon kicker was installed and successfully tested in the storage ring magnet and a significant improvement in the knowledge of the muon g-factor is expected from upcoming runs in August 1998 and January 1999.

Original languageEnglish (US)
Pages (from-to)182-185
Number of pages4
JournalIEEE Transactions on Instrumentation and Measurement
Issue number2
StatePublished - 1999

Bibliographical note

Funding Information:
Manuscript received July 2, 1998. This work was supported in part by the U.S. Department of Energy, U.S. National Science Foundation, the German Bundesminister für Bildung und Forschung, the Russian Ministry of Science, and the U.S.–Japan Agreement in High Energy Physics. R. Prigl, H. N. Brown, G. Bunce, G. T. Danby, R. Larsen, Y. Y. Lee, W. Meng, J.-L. Mi, W. M. Morse, C. Pai, R. Sanders, Y. K. Semertzidis, M. Tanaka, and D. Warburton are with the Brookhaven National Laboratory, Upton, NY 11973 USA (e-mail: R. M. Carey, W. Earle, E. Efstathiadis, M. Hare, E. S. Hazen, F. Krienen, J. P. Miller, O. Rind, B. L. Roberts, L. R. Sulak, and A. Trofimov are with the Department of Physics, Boston University, Boston, MA 02215 USA. Y. Orlov is with the Newman Laboratory, Cornell University, Ithaca NY 14853 USA. D. Winn is with Fairfield University, Fairfield, CT 06430 USA. A. Grossmann, K. Jungmann, P. Neumayer, and G. zu Putlitz are with the Physikalisches Institut der Universität Heidelberg, 69120 Heidelberg, Germany. U. Haeberlen is with MPI für Med. Forschung, 69120 Heidelberg, Germany. P. T. Debevec, W. Deninger, F. Gray, D. W. Hertzog, C. J. G. Onderwater, C. Polly, S. Sedykh, M. Sossong, and D. Urner are with the Department of Physics, University of Illinois, Urbana, IL 61820 USA. P. Cushman, L. Duong, S. Giron, J. Kindem, I. Kronkvist, R. McNabb, D. Miller, C. Timmermans, and D. Zimmermann are with the Department of Physics, University of Minnesota, Minneapolis, MN 55455 USA. V. P. Druzhinin, G. V. Fedotovich, B. I. Khazin, I. Logashenko, N. Ryskulov, S. Serednyakov, Yu. M. Shatunov, and E. Solodov are with the Budker Institute of Nuclear Physics, Novosibirsk, Russia. A. Yamamoto is with KEK, Japan. M. Iwasaki and M. Kawamura are with the Tokyo Institute of Technology, Tokyo, Japan. H. Deng, S. K. Dhawan, F. J. M. Farley, M. Grosse Perdekamp, V. W. Hughes, D. Kawall, W. Liu, J. Pretz, S. I. Redin, and A. Steinmetz are with the Department of Physics, Yale University, New Haven, CT 06511 USA. Publisher Item Identifier S 0018-9456(99)02863-6.


  • G-factor
  • Muon storage ring
  • Nuclear magnetic resonance
  • Spin precession
  • Standard model
  • Superconducting coils
  • Supersymmetry


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