Elastic scattering polarimeter for a polarized antiproton beam at U-70 accelerator of IHEP

16th Workshop on High Energy Spin Physics

Bogdanov, A.A.^1 ; Chetvertkov, M.A.^2 ; Chetvertkova, V.A.^2 ; Garkusha, V.I.^3 ; Meschanin, A.P.^3 ; Mochalov, V.V.^1,3 ; Nurusheva, M.B.^2 ; Nurushev, S.B.^1,3 ; Ridiger, A.V.^2 ; Rykov, V.L.^1 ; Semenov, P.A.^1,3 ; Strikhanov, M.N.^1 ; Vasiliev, A.N.^1,3 ; Zapolsky, V.N.^3

National Research Nuclear University, Moscow Engineering Physics Institute, Moscow

115409, Russia^1

Federal State Budget Organization State Center Interphyzika, Ministry of Education and Science, Moscow

115409, Russia^2

Institute for High Energy Physics National Research Centre Kurchatov Institute, Protvino

142284, Russia^3

关键词: Analyzing power;    Antiproton beams;    Beam polarization;    Physics programs;    Polarized targets;    Proton synchrotrons;    Scattering polarimeters;    Statistical errors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/678/1/012034/pdf
DOI  :  10.1088/1742-6596/678/1/012034

来源: IOP

【 摘 要 】

The absolute polarimeter based on the elastic pp-scattering in the diffraction kinematic regions with the total momentum transfer squared coverage of 0.1 2is proposed for the polarized antiproton beam at the U-70 proton synchrotron of IHEP. It is shown that it would take ∼200-400 hours for measuring the beam polarization at the statistical errors of ΔPB/PB10-15%. These time estimates include also the time which is necessary for the measurements of an analyzing power AN, using a polarized target. Besides the measurements of beam polarizations, the proposed polarimeter provides an opportunity for carrying out the experimental studies of the small momentum transfers physics which would be a valuable enrichment of the SPASCHARM experiment capabilities and its physics program.