Experiments with Longitudinally Polarized Electrons in a Storage Ring Using a Siberian Snake

• Published in: Physical review letters Vol. 84; no. 17
• Main Authors: H. R. Poolman, D. J. Boersma, M. Harvey, Douglas W. Higinbotham, I. Passchier, E. Six, Ricardo Alarcon, P. W. van Amersfoort, Th. S. Bauer, H. Boer Rookhuizen, J. F. J. van den Brand, L. D. van Buuren, H. J. Bulten, Rolf Ent, M. Ferro-Luzzi, D. G. Geurts, Peter Heimberg, Kees de Jager, P. Klimin, I. Koop, F. Kroes, J. van der Laan, G. Luijckx, A. Lysenko, B. Militsyn, I. Nesterenko, J. Noomen, Blaine Norum, M. J. J. van den Putte, Yu. Shatunov, J. J. M. Steijger, D. Szczerba, H. de Vries
• Format: Journal Article
• Language: English
• Published: United States 24-04-2000
• Subjects: BACKSCATTERING; DETECTION; DEUTERONS; ELECTRONS; LASERS; LIFETIME; NEUTRONS; NUCLEI; PARTICLE ACCELERATORS; PHASE SPACE; POLARIZATION; PROTONS; SPIN; STORAGE RINGS
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.84.3855

We report on first measurements with polarized electrons stored in a medium-energy ring and with a polarized internal target. Polarized electrons were injected at 442 MeV (653 MeV), and a partial (full) Siberian snake was employed to preserve the polarization. Longitudinal polarization at the interaction point and polarization lifetime of the stored electrons were determined with laser backscattering. Spin observables were measured for electrodisintegration of polarized {sup 3}He, with simultaneous detection of scattered electrons, protons, neutrons, deuterons, and {sup 3}He nuclei, over a large phase space.