Beam polarimetry at the SPASCHARM experiment at IHEP U-70 accelerator

[摘要] We describe the absolute polarimeters for the beam channel intended to transport polarized proton and antiproton beam at U70 accelerator. The circulating proton beam of 60 GeV/c and intensity 1013p/cycle is slowly extracted from accelerator. It strakes the external an aluminum target of one interaction length. The emitted on forward direction Λ and hyperons by parity violating process serve as the source of the polarized protons and antiprotons. In this case we expect to get the polarized antiproton beams in the momentum range 10-40 GeV/c with intensity, approximately 104- 4x105antiprotons/cycle, 106protons/cycle.

[发布机构] National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow; 115409, Russia^1;State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, Russia^2;MD Anderson Cancer Center, Department of Radiation Physics, Unit 1420, 1515 Holcombe Blvd, Houston; TX; 77030, United States^3;GSI Helmholtz Centre for Heavy Ion Research, Plankstrasse 1, Darmstadt; 64291, Germany^4;Kashirskoe highway 31, Moscow; 115409, Russia^5

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Aluminum target;Antiproton beams;Interaction length;Momentum range;Polarized protons