The status of VEPP-4

The VEPP-4 accelerator-accumulator complex is designed for carrying out experiments with colliding electron-positron beams with the energy in the range of from 1 to 5 GeV using a VEPP-4M collider equipped with the KEDR magnetic detector. Experiments in the field of high-energy physics (HEP) using the complex in its present state have been being carried out since 2002. Science programs other than HEP programs are carried out in the VEPP-4, including experiments with synchrotron-radiation (SR) beams and studies on nuclear physics with an internal gas target, on verification of the CPT invariance, on accelerator physics, etc. The status of the complex, main results, methods used, new approaches, and long-term plans have been described.

[1]  G. A. Savinov,et al.  Measurement of main parameters of the ψ ( 2 S ) resonance , 2012 .

[2]  A. Skrinsky,et al.  Experiments on the physics of charged particle beams at the VEPP-4M electron-positron collider , 2009 .

[3]  D. Shatilov Beam-beam simulations at large amplitudes and lifetime determination , 1996 .

[4]  A. Shamov Measurement of J/ψ leptonic width with the KEDR detector , 2010 .

[5]  E. al.,et al.  Measurement of D0 and D+ meson masses with the KEDR detector , 2009, 0909.5545.

[6]  G. A. Savinov,et al.  Measurement of Γee(J/ψ)⋅B(J/ψ→e+e−) and Γee(J/ψ)⋅B(J/ψ→μ+μ−) , 2010 .

[7]  G. A. Savinov,et al.  Measurement of \Gamma_{ee}(J/\psi)*Br(J/\psi->e^+e^-) and \Gamma_{ee}(J/\psi)*Br(J/\psi->\mu^+\mu^-) , 2009, 0912.1082.

[8]  G. A. Savinov,et al.  Measurement of ψ(3770) parameters , 2011, 1109.4205.

[9]  R. Thornagel,et al.  Beam diagnostics at the BESSY I electron storage ring with Compton backscattered laser photons: measurement of the electron energy and related quantities , 1997 .

[10]  G. A. Savinov,et al.  Tau mass measurement at KEDR , 2008 .

[11]  V. Bobrovnikov,et al.  Focusing Aerogel RICH for particle identification and momentum measurement , 2011 .

[12]  M. Barbier,et al.  Theory of Cyclic Accelerators , 1966 .

[13]  E. al.,et al.  New precision measurement of the J/ψ- and ψ′-meson masses , 2003, hep-ex/0306050.

[14]  S. A. Zevakov,et al.  Internal polarized deuterium target with cryogenic atomic beam source , 2002 .

[15]  G. A. Savinov,et al.  Measurement of J/ψ → ηcγ at KEDR , 2010 .

[16]  G. A. Savinov,et al.  The KEDR detector , 2013, Physics of Particles and Nuclei.

[17]  S. V. Motygin,et al.  Commissioning feedback systems at VEPP-4M electron-positron collider , 2010 .

[18]  S. A. Zevakov,et al.  Measurement of the two-photon exchange contribution in elastic ep scattering at VEPP-3 , 2011, 1112.5369.

[19]  V. Zhilich,et al.  Review of beam energy measurements at VEPP-4M collider ☆: KEDR/VEPP-4M , 2009 .

[20]  K. Ng Physics of collective beam instabilities , 2000 .