Polarised targets for 4π detectors at MAMI
Polarised targets for 4π detectors at MAMI
复制标题
MAMI 4π 探测器的偏振目标
DOI：
10.1140/epjst/e2011-01489-8
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
A. Thomas
中科院分区：
文献类型：
--
作者：
A. Thomas
摘要自旋作为粒子的基本性质，是近几十年来粒子和核物理研究的主要对象。因此，对偏振观测的研究变得越来越重要。如今，高占空比的连续波束是标准技术。与此同时，具有完全角度接受能力的探测器，即所谓的4π探测器的发展与加速器技术保持同步，从而能够精确地确定所研究的反应的最终状态。高速数据采集系统的出现使亮度增加了几个数量级。
对于完整的自旋研究，除了偏振光束和反冲偏振器外，还需要一个偏振目标。先进的光束和大接受探测器技术的出现推动了高度极化、全角接受目标的发展。
AbstractThe spin, as a fundamental property of a particle, has been a main object of investigation in particle and nuclear physics research in recent decades. Consequently, the investigation of polarisation observables has become more and more important. Nowadays cw beams with high duty cycles are standard technology. In parallel, the development of detectors with full angular acceptance, so called 4π detectors, has kept pace with the accelerator technology to allow for precise determination of the final state of the reaction under investigation. The availability of high speed data acquisition systems has enabled an increase in the luminosities by orders of magnitude.
For complete spin investigation, one requires a polarised target in additon to polarised beams and recoil polarimeters. The advent of advanced beam and large acceptance detector technologies has driven the development of highly polarised, full angular acceptance targets.