1. Polarization of the large COMPASS14NH3target
- Author
-
C. Hess, W. Meyer, Y. Kisselev, Fabrice Gautheron, G. Reicherz, K. Kondo, J.H. Koivuniemi, T Michigami, Norihiro Doshita, and T. Iwata
- Subjects
Physics ,History ,Polarization rotator ,Elliptical polarization ,Polarization (waves) ,Deep inelastic scattering ,Computer Science Applications ,Education ,Dipole ,COMPASS experiment ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Hyperpolarization (physics) ,Atomic physics ,Nuclear Experiment ,Microwave cavity - Abstract
The COMPASS experiment in the CERN M2 beam line is using 1508 cm3 granular solid 14NH3 as polarized proton target material to study the nuclear spin with deep inelastic scattering of polarized muons. The target consists of 2.5 T solenoid and 0.63 T dipole magnets, microwave cavity and large dilution cryostat. Continuous wave NMR is used to determine the polarization of the nuclei that are polarized with dynamic nuclear polarization method using 4 mm microwaves. Determination of the target proton polarization with thermal equilibrium NMR signals at temperatures 1.0 - 1.6 K is discussed.
- Published
- 2009