Abstract

In this paper, we report the characteristics of the generated beams, the extracted electron beam and the beam of secondary electrons/positrons, of the LPI accelerator complex Pakhra as of November 2019 for testing and calibrating detectors used in large accelerator and astrophysical experiments. At energies of 250–500 MeV of the electron beam ejected into Hall 1 from the S-25R synchrotron, its energy resolution is δ ~ 1% and the intensity can be changed by collimators in the range of 10³–10¹⁰ s^–1. The quasi-monochromatic beam of secondary electrons produced in Hall 2 typically has an energy in the range of 50–300 MeV, a corresponding energy resolution of δ = 14–2%, and an intensity of ~ 10² s^–1. The performed simulation of the characteristics of the secondary positron beam allowed selecting the optimal geometry of the setup and showed good agreement with the experimental data obtained later.

中文翻译：

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LPI加速复杂Pakhra的测试光束

摘要

在本文中，我们报告了截至2019年11月LPI加速器复合体Pakhra的生成束，提取的电子束和二次电子/正电子束的特性，以测试和校准大型加速器和天体实验中使用的探测器。从S-25R同步加速器射入1号厅的电子束能量为250–500 MeV时，其能量分辨率为δ〜1％，并且可以通过准直器在10 ³ –10 ¹⁰ s ^–1范围内改变强度。2号展馆产生的二次电子准单色束的能量通常在50–300 MeV范围内，相应的能量分辨率为δ= 14–2％，强度为〜10 ² s ^–1。对次级正电子束特性进行的模拟可以选择最佳的装置几何形状，并与以后获得的实验数据显示出良好的一致性。