Title :
Transverse polarization beyond the Z energy at LEP
Author :
Blondel, A. ; Böge, M. ; Bravin, E. ; Dehning, B. ; Placidi, M. ; Tecker, E. ; Wenninger, J.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
Experimental results on transverse polarization obtained at LEP at a beam energy of 50 GeV are shown. The application of the refined orbit correction procedure known as harmonic spin matching, implemented to compensate for depolarizing effects originating from orbit errors and misalignments of the machine elements, is described. Prospects and plans to improve the transverse polarization level at higher energies to extend the range of application of the direct and precise calibration with resonant depolarization are reported
Keywords :
beam handling techniques; electron accelerators; particle beam dynamics; polarimetry; storage rings; LEP; calibration; depolarizing effects; harmonic spin matching; machine elements; misalignments; orbit errors; refined orbit correction; resonant depolarization; transverse polarization; Calibration; Energy measurement; Error correction; Extrapolation; Magnetic field measurement; Magnetic resonance; Performance evaluation; Polarization; Storage rings; Time measurement;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749644
