Title of article :
The HERMES polarized atomic beam source
Author/Authors :
Nass، نويسنده , , A. and Baumgarten، نويسنده , , C. and Braun، نويسنده , , B. and Ciullo، نويسنده , , G. S. Court، نويسنده , , G. and Dalpiaz، نويسنده , , P.F. and Golendukhin، نويسنده , , A. and Graw، نويسنده , , G. and Haeberli، نويسنده , , W. and Henoch، نويسنده , , M. and Hertenberger، نويسنده , , R. and Koch، نويسنده , , N. and Kolster، نويسنده , , H. and Lenisa، نويسنده , , P. and Marukyan، نويسنده , , H. and Raithel، نويسنده , , M. and Reggiani، نويسنده , , D. and Rith، نويسنده , , K. and Simani، نويسنده , , M.C. and Steffens، نويسنده , , E. and Stewart، نويسنده , , J. and Tait، نويسنده , , P. H. Wise، نويسنده , , T.، نويسنده ,
Pages :
12
From page :
633
To page :
644
Abstract :
The HERMES atomic beam source is used to provide nuclear polarized hydrogen or deuterium atoms for the HERMES target. The setup including the dissociator, the sextupole magnet system and the high-frequency transitions is described. Measurements of the hydrogen intensity of up to 6.4×1016 atoms/s in two hyperfine substates and of the deuterium intensity of up to 5.8×1016 atoms/s in three hyperfine substates are presented. A degree of dissociation of 92.8% for H (94.5% for D) at the entrance of the storage cell and a nuclear polarization of around 0.97 (H) and 0.92 (D) have been found constant within a couple of percent over the whole running period of the HERMES experiment.
Keywords :
Internal target , High frequency transitions , Polarization , Hydrogen , Deuterium , Atomic beam source
Journal title :
Astroparticle Physics
Record number :
2022543
Link To Document :
https://search.isc.ac/dl/search/defaultta.aspx?DTC=10&DC=2022543
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