First results of the large COMPASS Li-6_D polarized target

The COMPASS (NA58) experiment at CERN operates with a large solid polarized target (PT) to study the spin structure of the nucleon. The COMPASS PT system started its operation with the target material 6 LiD in 2001. Deuteron polarizations of +54.2% and −47.1% were achieved in a 3 He / 4 He dilution refrigerator at a magnetic field of 2.5 T . The equal spin temperature (EST) concept was found to hold among the deuteron, the 6 Li and the 7 Li nuclei during the dynamic nuclear polarization (DNP) process. The agreement with the EST concept allows the permanent monitoring of only one nuclear species by the nuclear magnetic resonance (NMR) method.

89.20.+a
COMPASS
NA58
Polarized target
PT
DNP
Lithium deuteride
muon nucleus: deep inelastic scattering
deuteron: polarized target
lithium: deuterium

References(33)

Figures(0)

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