Electron Scattering from Polarized Deuterium at VEPP-3
The experiment to measure the tensor analyzing power T 20 of the deuteron using a tensor-polarized internal target at the VEPP-3 electron storage ring in Novosibirsk is currently in its second phase. Tensor-polarized deuterium atoms from an atomic beam source feed an active storage cell in the electron ring, serving as the target for a beam of 2 GeV unpolarized electrons. Analysis of the first Phase 2 data in the kinematic range Q 2 = 0.36 − 0.50 (GeV/c)2 is reported here. Plans for the third phase of the experiment, which will use a high-density, laser-driven polarized deuterium target, are also discussed. The measurement of T20 from the second and third phases of the experiment will cover the kinematic region 0.36 ≤ q ≤ 0.90 (GeV/c)2 where T 20 is particularly sensitive to isoscalar meson exchange currents.
KeywordsForm Factor Impulse Approximation Deuteron Wave Function Charge Form Factor Tensor Analyze Power
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