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自旋极化的正电子在高能物理，材料物理和实验室天体物理等领域具有广泛的用途。目前，传统极化正电子源是基于Bethe-Heitler机制通过圆偏振伽马光或纵向极化电子轰击高Z固体靶实现的，但是单发的正电子产额只有飞库量级（10-15库仑），难以满足未来正负电子对撞机所需的纳库（10-9库仑）以及极化正负电子等离子体物理研究中的要求。如何获得大电量和高密度的极化正电子仍然是一个巨大的挑战。
科研人员利用次级束装置研究电子俘获致核激发现象（图）
次级束装置 电子俘获 核激发
2022/9/14
基于兰州重离子加速器装置（HIRFL）的放射性束流线RIBLL1，中国科学院近代物理研究所与合作者创造性地利用同核异能态束流探究了电子俘获致同核异能态激发现象。该实验工作大幅提升了测量精度和可靠性，首次提供了与理论预期相符的测量结果。6月17日，相关研究成果发表在《物理评论快报》上。
北京谱仪III开创探索正反物质不对称性的新方法（图）
北京谱仪III 正反物质 不对称性 新方法
2022/6/28
北京谱仪III合作组实现了一种创新实验方法，为研究物质和反物质不对称性提供了极其灵敏的实验探针。相关研究成果于6月2日在《自然》杂志上正式刊发。
高能物理实验径迹系统流式数据获取框架的研究
高能物理实验 径迹系统探测器 数据获取系统 Hadoop大数据框架 流式数据处理
2022/3/22
高能物理实验研究基本粒子及其相互作用，需要获取和分析大量的实验数据以发现新粒子或测量已知粒子的特性。随着高能物理实验规模的不断扩大以及加速器能量和亮度的不断提升，海量数据的获取、处理及分析将更具挑战性。在高能物理实验中，径迹系统探测器的通道数和数据量尤为巨大，为了读出和在线处理径迹系统探测器产生的海量数据，本文结合Hadoop大数据框架，引入主流开源的大数据处理组件，研究实现了一种流式数据获取框架...
测量二次电子空间分布特征矩阵法的有效性分析
二次电子发射 空间分布 测量结构 模拟计算
2021/1/22
为了准确测量不同材料在实际环境中的二次电子空间分布，设计了一种新型的二次电子发射空间分布测量结构，给出了实验测量原理，用求解特征矩阵的方法对实验结果进行处理，得到了所需的二次电子空间分布。通过模拟计算对该测量方法进行了校验，模拟结果与假设二次电子空间分布函数相吻合，表明该测量方法可靠、测量精度高，为后续样机研制奠定了理论基础。
Multi bunch GMMA Ray generation experiment at ATF
Multi bunch GMMA Ray generation experiment ATF Instrumentation and Detectors
2012/5/29
We construct a new detector to monitor $\gamma$ yields in bunch by bunch basis for the Laser Compton experiment at the KEK ATF which is capable to separate $\gamma$ rays in 5.6ns-spacing multi-bunch o...
Low-Background Monitoring Cameras for the Daya Bay Antineutrino Detectors
Detector control systems Detector design construction technologies Liquid detectors
2012/4/27
The Daya Bay Reactor Neutrino Experiment is designed to measure the neutrino mixing angle theta13 to world-leading precision. The experiment deploys identical antineutrino detectors at distances of 40...
Studies of Vertex Tracking with SOI Pixel Sensors for Future Lepton Colliders
Monolithic pixel sensor SOI technology Vertex reconstruction High Energy Physics - Experiment
2012/4/24
This paper presents a study of vertex tracking with a beam hodoscope consisting of three layers of monolithic pixel sensors in SOI technology on high-resistivity substrate. We study the track extrapol...
The Long Baseline Neutrino Experiment (LBNE) Water Cherenkov Detector (WCD) Conceptual Design Report (CDR)
LBNE WCD CDR
2012/4/20
Conceptual Design Report developed for the Water Cherenkov Detector (WCD) option for the far detector of the Long Baseline Neutrino Experiment.
Variable $G$ Correction for Dark Energy Model in Higher Dimensional Cosmology
Variable $G$ Correction Dark Energy Model Higher Dimensional Cosmology General Physics
2012/4/19
In this work, we have considered $N (=4+d)$-dimensional Einstein field equations in which 4-dimensional space-time which is described by a FRW metric and that of the extra $d$-dimensions by an Euclide...
Affine.m - Mathematica package for computations in representation theory of finite-dimensional and affine Lie algebras
Mathematica Lie algebra ane Lie algebra Kac-Moody algebra root system weights irreducible modules CFT Integrable systems
2011/9/19
Abstract: In this paper we present Affine.m - program for computations in representation theory of finite-dimensional and affine Lie algebras and describe implemented algorithms. Algorithms are based ...
Abstract: This manuscript was originally created for and printed in the "Proceedings of seminar on unified theories of elementary particles" held in Feldafing Germany from July 5 to 16 1965 under the ...
On the depth of quantum space
depth quantum space quantum gravity research group field theory
2011/8/11
Abstract: We focus on the question: "Is space fundamentally discrete or continuous?" in the context of current quantum gravity research. In particular, we paint a scenario based on the idea that 'quan...
The use of statistical methods for the search for new physics at the LHC (in Russian)
statistical methods search new physics LHC
2011/8/5
Abstract: We review statistical methods used for the search for new physics at LHC.
BCS-BEC crossover in spatially modulated fermionic condensates
BCS-BEC spatially modulated fermionic condensates
2011/7/20
Several novel multi-component fermionic condensates show universal behavior under imbalance in the number of fermionic species.