Title of article
An atomic beam polarimeter to measure the nuclear polarization in the HERMES gaseous polarized hydrogen and deuterium target
Author/Authors
Baumgarten، نويسنده , , C. and Braun، نويسنده , , B. V. Court، نويسنده , , G. and Ciullo، نويسنده , , G. and Ferretti، نويسنده , , P. 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 Nass، نويسنده , , A. and Podʹyachev، نويسنده , , S.P. and Reggiani، نويسنده , , D.، نويسنده ,
Pages
13
From page
606
To page
618
Abstract
An atomic beam polarimeter for measurement of the hyperfine population numbers and the absolute polarization of thermal atomic hydrogen (H) and deuterium (D) beams is described. The principle of measurement and the method of calibration are given. The polarimeter measures the 4 (6) relative hyperfine population numbers of a thermal H (D) beam in the region of 1013 atoms s−1 to an absolute error of less than 0.01. The polarimeter has been in continuous operation with the internal polarized hydrogen and deuterium gas target used in the HERMES experiment at DESY since 1996.
Keywords
Spin-polarized hydrogen , Detection of atomic beams , Polarimeters , hyperfine interactions , Polarized targets
Journal title
Astroparticle Physics
Record number
2019028
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