This report describes the physics case, the resulting detector requirements, and the evolving
detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC …

The High Intensity γ-ray Source (HIγS) is a joint project between the Triangle Universities
Nuclear Laboratory (TUNL) and the Duke Free Electron Laser Laboratory (DFELL). This …

The instrumentation in Hall A at the Thomas Jefferson National Accelerator Facility was
designed to study electro-and photo-induced reactions at very high luminosity and good …

This article reviews the physics and technology of producing large quantities of highly spin-
polarized He 3 nuclei using spin-exchange (SEOP) and metastability-exchange (MEOP) …

A unified presentation is given on the use of dispersion relations in the real and virtual
Compton scattering processes off the nucleon. The way in which dispersion relations for …

We report on measurements of the neutron spin asymmetries A 1, 2 n and polarized
structure functions g 1, 2 n at three kinematics in the deep inelastic region, with x= 0.33 …

After the initial discovery of the so-called “spin crisis in the parton model” in the 1980s, a
large set of polarization data in deep inelastic lepton–nucleon scattering was collected at …

The duality between partonic and hadronic descriptions of physical phenomena is one of the
most remarkable features of strong interaction physics. A classic example of this is in …

We review the present understanding of the spin structure of protons and neutrons, the
fundamental building blocks of nuclei collectively known as nucleons. The field of nucleon …

We present a first attempt to experimentally extract an effective strong coupling constant that
we define to be a low Q2 extension of a previous definition by S. Brodsky et al. following an …