Author/Authors :
Ball، نويسنده , , J and Baum، نويسنده , , G and Berglund، نويسنده , , P and Daito، نويسنده , , I and Doshita، نويسنده , , N and Gautheron، نويسنده , , F and Goertz، نويسنده , , St. and Harmsen، نويسنده , , J and Hasegawa، نويسنده , , T and Heckmann، نويسنده , , J and Horikawa، نويسنده , , N and Iwata، نويسنده , , T and Kisselev، نويسنده , , Yu and Koivuniemi، نويسنده , , J and Kondo، نويسنده , , K and Le Goff، نويسنده , , J.M. and Magnon، نويسنده , , A and Meier، نويسنده , , A and Meyer، نويسنده , , W and Radtke، نويسنده , , E and Reicherz، نويسنده , , G and Takabayashi، نويسنده , , N، نويسنده ,
Abstract :
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 6LiD in 2001. Deuteron polarizations of +54.2% and −47.1% were achieved in a 3He/4He dilution refrigerator at a magnetic field of 2.5 T. The equal spin temperature (EST) concept was found to hold among the deuteron, the 6Li and the 7Li 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.
Keywords :
PT , NA58 , Polarized target , DNP , Lithium deuteride , COMPASS
