Simulation of effects of incident beam condition in p-p elastic scattering

YU Lei; ZHANG Gao-Long; LE Xiao-Yun

doi:10.1088/1674-1137/38/2/024001

Chinese Physics C> 2014, Vol. 38> Issue(2) : 024001 DOI: 10.1088/1674-1137/38/2/024001

Simulation of effects of incident beam condition in p-p elastic scattering

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The simulation is performed for the monitors of beam direction and beam position for p-p elastic scattering. We set several variables to simulate the monitors of incident beam condition changes: beam positions at the quadrupole magnet and target in beam line polarimeter (BLP2), distance between quadrupole magnet and target, size of plastic scintillators, distance between the target in BLP2 and the centers of plastic scintillators, and beam polarization. Through the rotation of the coordinate system, the distributions of scattered and recoiled protons in the laboratory system were obtained. By analyzing the count yields in plastic scintillators at different beam positions, we found that the beam incident angular change (0.35°) could be detected when the asymmetry of geometries of left and right scintillators in BLP2 was changed by 6%. Therefore, the scattering angle measured in the experiment can be tracked by these monitors.

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YU Lei, ZHANG Gao-Long and LE Xiao-Yun. Simulation of effects of incident beam condition in p-p elastic scattering[J]. Chinese Physics C, 2014, 38(2): 024001. doi: 10.1088/1674-1137/38/2/024001

YU Lei, ZHANG Gao-Long and LE Xiao-Yun. Simulation of effects of incident beam condition in p-p elastic scattering[J]. Chinese Physics C, 2014, 38(2): 024001. doi: 10.1088/1674-1137/38/2/024001 shu

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Received: 2013-01-28
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Simulation of effects of incident beam condition in p-p elastic scattering

Corresponding author: ZHANG Gao-Long,

Received Date: 2013-01-28
Accepted Date: 1900-01-01
Available Online: 2014-02-05

Abstract: The simulation is performed for the monitors of beam direction and beam position for p-p elastic scattering. We set several variables to simulate the monitors of incident beam condition changes: beam positions at the quadrupole magnet and target in beam line polarimeter (BLP2), distance between quadrupole magnet and target, size of plastic scintillators, distance between the target in BLP2 and the centers of plastic scintillators, and beam polarization. Through the rotation of the coordinate system, the distributions of scattered and recoiled protons in the laboratory system were obtained. By analyzing the count yields in plastic scintillators at different beam positions, we found that the beam incident angular change (0.35°) could be detected when the asymmetry of geometries of left and right scintillators in BLP2 was changed by 6%. Therefore, the scattering angle measured in the experiment can be tracked by these monitors.