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The energy calibration of LEP in the 1993 scan

  • Experimental Physics
  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

This report summarizes the procedure for providing the absolute energy calibration of the LEP beams during the energy scan in 1993. The average beam energy around the LEP ring was measured in 25 calibrations with the resonant depolarization technique. The time variation of this average beam energy is well described by a model of the accelerator based on monitored quantities. The absolute calibration of the centre of mass energies of the off-peak points is determined with a precision of 2 parts in 105 resulting in a systematic error on the Z-mass of about 1.4 MeV and on the Z-width of about 1.5 MeV.

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References

  1. L. Arnaudon et al.: “Measurement of LEP beam energy by resonant spin depolarization”. Phys. Lett. B 284 (1992) 431–439.

    Google Scholar 

  2. L. Arnaudon et al.: “Accurate Determination of the LEP Beam Energy by Resonant Depolarization”. CERN SL/94-71 (BI). To be published in Zeitschrift für Physik C.

  3. R.Billen et al: “LEP accelerator logging system using on-line database” International Conference on Accelerator and Large Experimental Physics Control Systems(ICALEPC 93)- Berlin- October 18–22 1993.

  4. L. Arnaudon et al: “Measurement of the mass of the Z boson and the energy calibration of LEP” Phys. Lett. B 307 (1993) 187–193.

    Google Scholar 

  5. M. Koratzinos: “Electroweak results from LEP”, presented at the La Thuile Conference, 1994

  6. L. Arnaudon et al: “Effects of Terrestrial Tides on the LEP Beam Energy”. CERN SL/94-07 (BI). To be published in Nuclear Instruments and Methods.

  7. L. Arnaudon et al (The working group on LEP Energy): “The Energy Calibration of LEP in 1991”, CERN-PPE/92-125, CERN-SL/92-37 (DI), contributed to the XXVIth International Conference on High Energy Physics, Dallas, July 1992.

  8. L. Arnaudon et al (The working group on LEP Energy) “The Energy calibration of LEP in 1992”. CERN-SL/93-21 (DI).

  9. A.A. Sokolov and I.M. Ternov: “On Polarization and Spin Effects in the Theory of Synchrotron Radiation”. Sov. Phys. Dokl. 8 (1964) 1203.

    Google Scholar 

  10. The Particle Data Group, Phys. Rev. D50 (1994).

  11. R. Assmann et al.: “Polarization Studies at LEP in 1993”. CERN SL/94-08 (AP).

  12. G. Alexander et al: “Measurements of Polarization in LEP”. In “Polarization at LEP”, G. Alexander et al, eds., CERN Yellow report 88-06 (1988) Vol.II,3.

  13. J. Buon: “Interference Effects between Depolarization Resonances and Higher-Order Corrections to Perturbed Spin Motion in Synchrotons and Storage Rings”. LAL-RT 87-09.

  14. I.A. Koop et al.: “Investigation of the Spin Precession Tune Spread in the Storage Ring”. Proc. 8th International Symposium on High Energy Spin Physics, Minneapolis, September 12–17, 1988. AIP Conf. Proc. No. 187, p. 1023.

  15. J.P. Koutchouk: “Spin Tune Shifts due to Solenoids”. CERN-SL/93-26 (AP), 1993.

  16. R. Assmann and J.P. Koutchouk: “Spin Tune Shifts Due To Optics Imperfections”. CERN SL/94-13 (AP).

  17. K.A.Drees: “Energy Difference of Electron and Positron Beam”, CERN SL/Note 94-100 (BI).

  18. M. Placidi et al: “Polarization Results and Future Perspectives”, Proc. of the Third Workshop on LEP performance, ed. J. Poole, CERN SL/93-19.

  19. P. Melchior: “Tidal Interactions in the Earth Moon System”, Communications, Serie B, N0 160, IUG General Assembly, Vienna, August 1991. Fortran code courtesy of P. Melchior, Observatoire Royal de Belgique.

  20. R. Jacobsen: “Observations of Tidal Distortions of the LEP Orbit”. CERN-SL-MD Note 62, May 1993.

  21. J. Wenninger: “Study of the LEP Beam Energy with Beam Orbits and Tunes”. CERN-SL/94-14 (BI), 1994.

  22. R. Jacobsen: “1993 LEP Energy Spread and Variation From Spot Size Measurements”, ALEPH 94-060, April 1994.

  23. D. Strom: “Determination of the LEP energy spread from the longitudinal beam size in OPAL”, Opal Technical Note TN2 64, November 1994.

  24. E. Rossa: “Real Time Single Shot Three-Dimensional Measurement of Picosecond Photon Bunches”, CERN SL/94-79 (BI). K. Hanke: “Measurement of the bunch length at LEP with a streak camera and comparison with results from LEP experiments”, Diploma work, PITHA 94/1, May 1994, RWTH Aachen, Germany.

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Author notes

  1. R. Assmann

    Present address: Stanford Linear Accelerator Center (SLAC), Stanford Univ., P.O. Box 4349, 94309, Stanford, CA, USA

  2. R. Jacobsen

    Present address: Dept. of Physics, Univ. of California, 94720, Berkeley, CA, USA

  3. R. Veenhof

    Present address: Laboratório de Instrumentacão e Física Experimental de Partículas, Av. E. Garcia 14-1, P-1000, Lisboa, Portugal

Authors and Affiliations

  1. Max-Plank-Institut für Pysik, Werner-Heisenberg-Institut, D-80805, München, Germany

    R. Assmann

  2. European Laboratory for Particle Physics (CERN), CH-1211, Geneva 23, Switzerland

    A. Beuret, J. Billan, R. Billen, F. Bordry, H. Burkhardt, B. Dehning, P. Grosse-Wiesmann, H. Grote, C. M. Hawkes, K. Henrichsen, A. Hofmann, R. Jacobsen, M. Jonker, J. P. Koutchouk, J. Miles, S. Myers, E. Peschardt, M. Placidi, D. Plane, L. Rolandi, R. Schmidt, R. Veenhof, M. Vadon, H. Wachsmuth & J. Wenninger

  3. Laboratoire de Physique Nucléaire et des Hautes Energies, Ecole Polytechnique, IN2P3-CRNS, F-91128, Palaiseau Cedex, France

    A. Blondel

  4. NIKHEF, National Institute for High Energy Physics, NL-1009 DB, Amsterdam, The Netherlands

    G. J. Bobbink

  5. Fachbereich Physik, University of Wuppertal, Postfach 100 127, D-42097, Wuppertal, Germany

    A. Drees

  6. Laboratoire de Physique Nucléaire, Université de Montréal, H3C3J7, Montréal, Quebec, Canada

    J. Gascon

  7. Physics Department, University of Oslo, Blindern, N-1000, Oslo 3, Norway

    M. Koratzinos

  8. Institut für Physik, Universität Mainz, D-55099, Mainz, Germany

    G. Quast

  9. Department of Physics, University of Oxford, Keble Road, OX1 3RH, Oxford, UK

    P. Renton

  10. Dept. of Physics, University of Oregon, 97403, Eugene, Oregon, USA

    D. Strom

  11. Department of Physics, Schuster Laboratory, The University, M139PL, Manchester, UK

    T. Wyatt

Authors
  1. R. Assmann
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  2. A. Beuret
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  3. A. Blondel
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  4. J. Billan
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  5. R. Billen
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  6. G. J. Bobbink
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  7. F. Bordry
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  8. H. Burkhardt
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  9. B. Dehning
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  10. A. Drees
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  11. J. Gascon
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  12. P. Grosse-Wiesmann
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  13. H. Grote
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  14. C. M. Hawkes
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  15. K. Henrichsen
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  16. A. Hofmann
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  17. R. Jacobsen
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  18. M. Jonker
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  19. M. Koratzinos
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  20. J. P. Koutchouk
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  21. J. Miles
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  22. S. Myers
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  23. E. Peschardt
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  24. M. Placidi
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  25. D. Plane
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  26. G. Quast
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  27. P. Renton
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  28. L. Rolandi
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  29. R. Schmidt
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  30. D. Strom
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  31. R. Veenhof
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  32. M. Vadon
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  33. H. Wachsmuth
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  34. J. Wenninger
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  35. T. Wyatt
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The working group on LEP energy

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The working group on LEP energy., Assmann, R., Beuret, A. et al. The energy calibration of LEP in the 1993 scan. Z. Phys. C - Particles and Fields 66, 567–582 (1995). https://doi.org/10.1007/BF01579631

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  • DOI: https://doi.org/10.1007/BF01579631

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