Abstract
The primary and secondary triggers of the KEDR detector operating at the VEPP-4M electron-positron collider of the Budker Institute of Nuclear Physics since 2000 are considered. The detector systems generating the signals, the design of the triggers, the timing characteristics of their operation, and their communication with the data acquisition system are described. The average rates of triggering of the primary and secondary triggers are 3.5 kHz and 50 Hz, respectively. The total efficiency of the data acquisition system and the triggers is 91.45%, and the efficiency of event selection is 98%. A number of results of world importance have been obtained using the KEDR detector. In particular, the masses of J/ψ, ψ”, and ψ(3770) mesons and a τ lepton have been measured in the experiments with the KEDR detector with accuracies surpassing the values attained worldwide.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Anashin, V. V., Anchugov, O. V., Bondar, A. E., et al., VEPP-4M Collider: Status and Plans, Proc. 6th European Particle Accelerator Conference (EPAC 98), Stockholm, 1998, vol.1, pp. 400–402.
Anashin, V. V., Aulchenko, V. M., Baibusinov, B. O., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 2002, vol. 478, nos. 1–2, p. 420.
Anashin, V. V., Aulchenko, V. M., Baldin, E. M., et al., Nuclear Physics B, 2008, vols. 181–182 (Proc. Suppl.), p. 353.
Anashin, V. V., Aulchenko, V. M., Baldin, E. M., et al., Phys. Letters B, 2010, vol. 686, nos. 1–2, p. 84.
Anashin, V. V., Aulchenko, V. M., Baldin, E. M., et al., Nucl. Phys. B Proc. Suppl., 2007, vol. 169, p. 125.
Aulchenko, V. M., Baru, S. E., and Savinov, G. A., Abstract of Papers, Proc. Int. Sym. on Coordinate Detectors for High Energy Physics, Dubna: JINR, 1988, p. 371.
Baru, S. E., Kirichenko, V. S., Savinov, G. A., et al., Preprint of Inst. Nucl. Phys., Novosibirsk, 1988, no. 88-26.
Aulchenko, V. V., Baibusinov, B. U., Baru, S. E., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 1998, vol. 409, no. 1, p. 639.
Aulchenko, V. M., Baibusinov, B. O., Baldin, E. M., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 1996, vol. 379, p. 502.
Shvarts, B. A., Development of CSI Crystal Based Calorimeters and Their Application in Experiments on Counter e + e − Beams, Doctoral (Phys.-Math.) Dissertation, Novosibirsk: Inst. Nucl. Phys. Siberian Branch Russ. Acad. Sci., 2004.
Aulchenko, V. M., Barladyan, A. K., Bondar, A. E., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 1996, vol. 379, p. 475.
Aulchenko, V. M., Chilingarov, A. G., Kolachev, G. M., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 1989, vol. 283, p. 528.
Baru, S. E., Blinov, V. E., Groshev, V. R., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 1998, vol. 409, p. 23.
Baru, S. E., Blinov, V. E., Groshev, V. R., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 2002, vol. 494, p. 251.
Aulchenko, V. M., Kuznetsov, S. G., and Usov, Yu. V., Preprint of Inst. of Nucl. Phys, Novosibirsk, 1998, no. 98-13.
Aulchenko, V. M., Baibusinov, B. O., Chilingarov, A. G., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 1988, vol. 265, p. 137.
Aulchenko, V.M., Bondarev, D.V., Bondar’, A.E., et al., Preprint of Inst. Nucl. Phys., Novosibirsk, 2000, no. 2000-48.
Aulchenko, V. M., Baibusinov, B. O., Baru, S. E., et al., Nucl. Instrum. Methods Phys. Res., Sect. A, 1996, vol. 379, p. 360.
Aulchenko, V. M., Vaibusinov, V. O., Baru, S. E., et al., Preprint of Inst. Nucl. Phys., Novosibirsk, 1991, no. 91-49.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © S.E. Baru, A.A. Talyshev, V.I. Telnov, Yu.G. Ukraintsev, Yu.V. Usov, L.I. Shamanaeva, A.G. Shamov, 2011, published in Pribory i Tekhnika Eksperimenta, 2011, No. 3, pp. 46–61.
Rights and permissions
About this article
Cite this article
Baru, S.E., Talyshev, A.A., Telnov, V.I. et al. Trigger of the KEDR detector. Instrum Exp Tech 54, 335–349 (2011). https://doi.org/10.1134/S002044121103002X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S002044121103002X