An ion-extraction polarimeter has been developed for internal target experiments in storage rings. Here, we report on the application of such a device for a tensor polarized deuterium gas target internal to a medium-energy electron storage ring. Ions, produced by the stored electron beam, were extracted from a storage cell using electrostatic lenses and a spherical deflector, transported to a mass-analyzer, and subsequently to a H-3((d) over left right arrow,n)alpha tensor polarization analyzer. The method allows determining the density-averaged nuclear polarization of the target gas, independent of spatial and temporal variations. We discuss in detail the systematic uncertainties (< 5%) associated with this technique. (C) 1998 Elsevier Science B.V. All rights reserved.
|Number of pages||11|
|Journal||Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment|
|Publication status||Published - 1 Mar 1998|
- ELECTRON STORAGE-RING
- GAS TARGETS