Crossing integer spin resonance at VEPP-4M with conservation of beam polarization

physics.acc-ph

/ Authors

A. K. Barladyan, A. Yu. Barnyakov, V. E. Blinov, S. A. Glukhov, S. E. Karnaev, E. B. Levichev, S. A. Nikitin, I. B. Nikolaev, I. N. Okunev, P. A. Piminov

and 2 more authors

A. G. Shamov, A. N. Zhuravlev

/ Abstract

A method proposed to preserve the electron beam polarization at the VEPP-4M collider during acceleration with crossing the integer (imperfection) spin resonance at energy E=1763 MeV has been successfully applied. It is based on full decompensation of the $ 0.6\times3.3$ Tesla$\times$meter integral of the KEDR detector longitudinal magnetic field due to the anti-solenoids 'switched-off'.