RESUMO
This Letter reports the successful use of feedback from a spin polarization measurement to the revolution frequency of a 0.97 GeV/c bunched and polarized deuteron beam in the Cooler Synchrotron (COSY) storage ring in order to control both the precession rate (≈121 kHz) and the phase of the horizontal polarization component. Real time synchronization with a radio frequency (rf) solenoid made possible the rotation of the polarization out of the horizontal plane, yielding a demonstration of the feedback method to manipulate the polarization. In particular, the rotation rate shows a sinusoidal function of the horizontal polarization phase (relative to the rf solenoid), which was controlled to within a 1 standard deviation range of σ=0.21 rad. The minimum possible adjustment was 3.7 mHz out of a revolution frequency of 753 kHz, which changes the precession rate by 26 mrad/s. Such a capability meets a requirement for the use of storage rings to look for an intrinsic electric dipole moment of charged particles.
RESUMO
The article deals with the occupational problems of pharmacies, discloses the main limitations in the organization of prophylactic measures, stresses the basic trends for the practice of physicians-hygienists. The authors propose to enhance the efficiency of the current control regarding the personnel. Besides all it is necessary to made an object classification of all military pharmacies, and estimate the hygienic and sanitary conditions of personnel. The article stands for the unique method which could estimate these conditions and proposes to make the analysis of the health state of personnel, taking into account age specific rates, sex, conditions of daily life and job performance.
