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  • Open Access

Estimation of synchrotron-radiation background based on a real beam orbit

Tetsuo Abe*

Hitoshi Yamamoto

  • Accelerator Laboratory, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan

  • Research Center for Neutrino Science (RCNS), Tohoku University, Sendai, Miyagi 980-8578, Japan

  • *Email address: tetsuo.abe@kek.jp

Phys. Rev. ST Accel. Beams 7, 072802 – Published 23 July, 2004

DOI: https://doi.org/10.1103/PhysRevSTAB.7.072802

Abstract

Some high-energy experiments have suffered from bitter experience on synchrotron-radiation background. As a measure, we have developed a new calculation method of synchrotron radiation based on a real beam orbit, aiming at quantitative estimations of synchrotron-radiation backgrounds, and the construction of a possible alarm system for the background. An explanation and a demonstration of our method are given.

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References (17)

  1. KEK Report No. 95-7, edited by N. Toge, 1995.
  2. Belle SVD Group, G. Alimonti et al., Nucl. Instrum. Methods Phys. Res., Sect. A 453, 71 (2000).
  3. SAD is a computer program for accelerator designs; http://acc-physics.kek.jp/SAD/sad.html.
  4. F. James, computer code MINUIT, version 94.1, 1994 (CERN Program Library Long Writeup D506).
  5. F. James and M. Roos, Comput. Phys. Commun. 10, 343 (1975).
  6. J. S. Schwinger, Phys. Rev. 75, 1912 (1949).
  7. S. Kawabata, Comput. Phys. Commun. 88, 309 (1995).
  8. Typically, it takes 10 hours to obtain a wattage distribution per a magnet using SAD; while using our program, shorter than 1 s.

  9. SAD can calculate electric field produced by a point charge according to the Feynman- Heaviside formula which is derived from Maxwell’s equations without any approximation.

  10. W. R. Nelson, H. Hirayama, and D. W. O. Rogers, SLAC Report No. SLAC-0265, 1985.
  11. Y. Namito, S. Ban, and H. Hirayama, Nucl. Instrum. Methods Phys. Res., Sect. A 349, 489 (1994).
  12. Y. Namito, H. Hirayama, and S. Ban, in Proceedings of the International Workshop on EGS4, Tsukuba, Japan, 1997 (KEK, Tsukuba, 1997).
  13. Y. Namito, H. Hirayama, and S. Ban, Radiat. Phys. Chem. 53, 283 (1998).
  14. H. Hirayama, Y. Namito, and S. Ban, KEK Internal Report No. 2000-3, 2000.
  15. Y. Namito and H. Hirayama, KEK Internal Report No. 2000-4, 2000.
  16. M. Yokoyama et al., IEEE Trans. Nucl. Sci. 48, 440 (2001).
  17. Belle SVD Group, Belle SVD2 Upgrade Technical Design Report (unpublished).

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