Publication Details:
Journal or Publication Title:
Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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Title:
LONGITUDINALLY AND TRANSVERSELY POLARIZED TARGETS IN THE HERMES EXPERIMENT
Creator:
Corporate Creators:
A. I. Alikhanyan National Scientific Laboratory, Yerevan, Armenia
Subject:
Physics ; Quantum mechanics, field theories, and special relativity ; Physics of elementary particles
Coverage:
Abstract:
The nuclear-polarized hydrogen and deuterium targets have been used in HERMES experiment since the year 1996 until the end of the year 2005 with the polarized positron or electron beams of HERA electron storage ring at DESY to study the spin structure of the nucleon. The main characteristics and the performance of these targets during different periods of their operation are presented. The different mechanisms of gas depolarization active in the cell are presented and an evaluation of their effect on the final target polarization is given.