Author/Authors :
Baumgarten، نويسنده , , C. and Braun، نويسنده , , B. and Brunn، نويسنده , , I. and 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. an، نويسنده ,
Abstract :
Atomic beam devices are frequently equipped with sextupole magnets to focus the beam or to act as spin filters in combination with RF-transitions for manipulating the hyperfine population within the atomic beam. A useful tool for the analysis of sextupole systems, the application of time-of-flight (TOF) measurements is presented. TOF measurements are enabled without mechanical beam chopper by utilizing adiabatic radio frequency transitions to select atoms within a certain time interval. This method is especially interesting for the use in atomic beam devices that are already equipped with RF-transitions and sextupole magnets and where space limitations or the required quality of the vacuum do not allow the installation of a mechanical chopper. The measurements presented here were performed with the atomic beam polarimeter of the HERMES polarized deuterium target and the results have been used to optimize the sextupole system of the polarimeter.
Keywords :
Polarimeters , Detection of atomic beams , Spin-polarized hydrogen , hyperfine interactions , Polarized targets
