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燕兵 蔡 (贵州财经大学)重离子物理Poster
The QCD evolution equations serve as both a theoretical cornerstone and an experimental foundation in high-energy nuclear physics, which are powerful for studying quantum chromodynamics, understanding hadron structure and interaction between hadrons. QCD predicts that the gluon density inside hadrons will increase rapidly in high-energy collisions, and eventually form a high gluon density...
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新南 王 (高能所)粒子物理实验技术Poster
BESIII实验的物理目标是对𝜏-粲能区进行精确测量。准确可靠的粒子鉴别系统对于提高信噪比，尤其是K/$\pi$鉴别至关重要。基于塑料闪烁体的飞行时间探测器是BESIII实验用于粒子鉴别的重要工具。测量时间利用BhaBha事例作为刻度样本，通过对依赖于时幅和击中位置的经验公式修正得到，预期时间通过径迹外推得到，测量时间与预期时间差值即为时间差$\Delta...
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雷 张 (中国科学技术大学)粒子物理实验技术Poster
低温高密核物质测量谱仪（CEE）是我国第一台运行于GeV能区的、自主研制的大型核物理实验装置，其中数据获取系统是CEE实验的重要组成部分。在CEE实验中，数据获取系统需要负责传输、处理并存储多个子系统约20000个电子学通道的数据，预期峰值数据率和触发率分别高达36Gbps和10kHz。为此，我们基于自主开发的通用流处理数据获取系统架构：D-Matrix，通过通用流处理节点的级联来构建CEE数据获取系统。
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在硬件架构上，CEE数据获取系统采用两款自主设计的FPGA通用读出板卡，通过光纤通信与PCIe接口负责硬件部分的数据传输，后端的服务器集群通过名为Fabric的全交换通信网络进行数据的定向分发。整个数据处理由FPGA内和服务器集群上的分布式通用流处理模块逐级完成，并在完成事例组装后将数据存入存储集群中。
未来，D-Matrix架构还计划将GPU纳入数据处理框架中，并将架构用于超... -
成洋 刘 (iinstitute of modern physics)粒子物理实验技术Poster
正在建设的CSR外靶实验（CEE）时间投影室（TPC）用于研究高密度核物质的设计和构建。CEE TPC是在CEE进行的实验研究中至关重要的探测器，将用于研究核物质的相结构和超饱和密度下的冷非对称核物质状态方程。TPC的设计旨在为带电粒子提供轨迹信息，包括三维位置、动量、电荷和能量损失。
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TPC是高能和核物理实验中常用的探测器。它由一个充满气体或液体的敏感体积组成，粒子电离产生的电子可以在电场中漂移。通过观察电子到达读出平面的位置，可以确定电离位置的二维信息，而第三维信息（漂移长度）可以通过漂移时间计算得出。CEE TPC计划成为中国迄今为止最大的TPC，体积约为1立方米。
CEE... -
Haoyu SHI (IHEP)粒子物理实验技术Poster
机器-探测器接口（MDI）区域的设计和优化是环形电子正电子对撞机（CEPC）中最复杂和具有挑战性的课题之一。对 MDI 相关问题的全面理解对于实现加速器和探测器的最佳整体性能至关重要。由于机器将在不同的束流能量下运行，因此需要一个灵活的相互作用区设计，以适应大范围的束流能量。该设计必须提供对物理研究所需的高亮度，同时保持探测器可以容忍的辐射背景。这需要在加速器和探测器的需求之间进行仔细的平衡。
本报告将基于CEPC技术设计报告（TDR）的最新CEPC MDI设计，介绍包括束流管在内的整体对撞区设计、、束流引起的背景估算、本底影响的控制和屏蔽方案，以及我们针对CEPC探测器参考技术设计报告（Ref-TDR）的计划和研究进展。
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Dr 恒宇 汪 (中国科学院高能物理研究所)粒子物理实验技术Poster
CEPC量能器采用粒子流算法来准确测量higgs和WZ玻色子，需要具备优秀的三维空间分辨率和能量分辨率。取样型量能器由于能够提供良好的颗粒度和较低的成本，成为CEPC量能器的首选。然而，由于结构限制，与全吸收量能器相比，采样量能器的能量分辨率较差。Shashlik量能器由交替层次的塑料闪烁体和铅组成，能够提供良好的能量分辨率以弥补这一缺点，并已被KOPIO和NICA实验采用。基于这些考虑，我们提出了一种新颖的取样型电磁量能器设计，用于CEPC实验，即液体闪烁体钨片ECAL。该量能器由百微米厚的液体闪烁体和钨片交替排列而成，采用极为精细的取样策略来优化量能器单元结构，使量能器单元具有良好能量分辨性能。为了评估我们提出的量能器方案的性能，我们使用Geant4模拟其物理和光学特性。预计该方案将在1 GeV时实现优于5%的能量分辨率和优于100...
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梦瑶 刘 (高能所)粒子物理实验技术Poster
环形电子正电子对撞机（CEPC）旨在精确测量希格斯玻色子的性质，研究W和Z玻色子的电弱相互作用，并寻找超出标准模型范围的新物理。作为CEPC第四种概念探测器设计方案的子探测器之一，漂移室有助于精确测量带电粒子的动量和径迹。本次报告将介绍基于Geant4的模拟和径迹重建在CEPC漂移室中的实现，主要包括：
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1. CEPC漂移室的模拟和重建软件的开发。
2. 对漂移室设计进行的详细的探测器模拟。
3. 用于径迹寻找和拟合的专用算法的开发。
4. 分别使用单粒子和物理事件进行性能研究。
结果显示，动量分辨和径迹效率均满足CEPC实验的要求。 -
Dr Yunyun Fan（樊云云） (IHEP)粒子物理实验技术Poster
CEPC的现有气体探测器在1-2 GeV低能区的k/pi、k/p分辨能力下降明显，这将严重影响味物理研究的潜能，模拟发现使用飞行时间探测器提供的飞行时间信息将可极大提高其分辨能力。因此CEPC决定选择基于AC-LGAD技术为粒子提供50皮秒的时间分辨，CEPC将在桶部和端盖处放置飞行时间探测器。设计成条状的单层AC-LGAD还将为粒子提供在Phi方向10微米的位置分辨，z方向1微米位置分辨。即为CEPC提供带电粒子的时间和位置信息的4维探测能力，对CEPC上的味物理研究有重要意义。
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Hadi Mehrabpour (Peking University)重离子物理Poster
In this research, we investigate the influence of nuclear structure parameters on the collective flow observed in symmetric and asymmetric nuclear collisions at ultra-relativistic energies. Our approach involves introducing an approximate yet realistic analytical model for the collision process, which allows us to emphasize the pivotal role played by the structural characteristics of the...
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然 李 (山东大学)重离子物理Poster
Jet interactions with the color-deconfined QCD medium in relativistic heavy-ion collisions are conventionally assessed by measuring the modification of the distributions of jet observables with respect to their proton-proton baselines. Deep learning methods allow us to evaluate the modification of jets on a jet-by-jet basis, and therefore significantly improve the capability of using jets to...
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Xiaocong Ai (Zhengzhou University)粒子物理实验技术Poster
Recently, there has been a growing focus on the search for anomalous objects beyond standard model (BSM) signatures at the Large Hadron Collider (LHC). This study investigates novel signatures involving highly collimated photons, referred to as photon-jets. These photon-jets can be generated from highly boosted BSM particles that decay into two or more collimated photons in the final state....
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Dejing Du (IHEP)粒子物理实验技术Poster
To achieve precise measurements of the Higgs, W, Z bosons, and the top quark, the future electron-positron colliders, such as the Circular Electron Positron Collider (CEPC), require their detector systems to have an unprecedented high jet energy resolution. Based on the particle flow algorithms (PFA), the CEPC team has proposed a new detector concept named “the 4th detector concept”. As one of...
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Chengwei Wang (IHEP)粒子物理实验技术Poster
The ATLAS experiment is planning a complete replacement of its inner detector with a new all-silicon inner tracker (ITk), consisting of a pixel detector in the region closest to the beam pipe, and a strip detector at higher radii for the high luminosity phase of the LHC.
In order to facilitate a multi-site construction effort, the ITk strip detector employs a highly modular design: the...
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Dr Minghua Wei (Fudan University)重离子物理Poster
The measurement of the magnetic field created in high-energy heavy-ion collisions is challenging, due to the fact that the magnetic field decays so drastically that in a thermalized quark-gluon plasma the field strength becomes rather weak. By incorporating the weak magnetic effect into the medium, and especially into the production formalism of dileptons from the quark-gluon plasma, the...
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坦 路 (中国科学院近代物理研究所)重离子物理Poster
In non-central heavy ion collisions, large angular momentum is generated, leading to the creation of significant vorticity and subsequent spin polarization of particles with finite spin. The global polarization of $\Lambda$ hyperons ($P_\Lambda$) measured along the direction of global angular momentum can serve as an effective probe of vorticity as well as spin degrees of freedom. Recently,...
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志军 李强子物理与味物理Poster
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辰艳 李 (山东大学), 震宇 陈 (山东大学)重离子物理Poster
The observation of hyperon polarization along beam direction ($P_z$) in nucleus-nucleus collisions has opened a new way to study the complex vortical structures of the QGP. With the high-statistics data collected by the CMS experiment, we present the first $P_z$ results for $\Lambda$ and $\bar{\Lambda}$ particles in pPb collision at $\sqrt{s_{NN}}= 8.16$ TeV over a wide transverse momentum and...
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飞 李 (复旦大学现代物理研究所)重离子物理Poster
The production of light nuclei in isobaric $^{96}_{44}$Ru + $^{96}_{44}$Ru and $^{96}_{40}$Zr + $^{96}_{40}$Zr collisions, ranging from $\sqrt{s_{NN}}=$7.7 to 200 GeV, are studied using the string melting version of A Multi Phase Transport (AMPT) model combined with a coalescence approach to light nuclei production. From the calculated yields, transverse momentum ($p_{T}$) spectra, and...
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行阳 孙 (Nanjing University)粒子物理实验技术Poster
Lumical 是 CEPC 的亮度探测器Y用于探测朝前区小角度散射的正负电子Y在这个 poster
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中我们将会介绍我们对 Lumical 探测器的几何设计方案Y以及通过 bhabha 事例的产生子模
拟矫正的重建算法设计?同时Y对称的正负 z 轴探测器也可以进一步提高重建算法精度?我
们希望通过这样的设计Y使得 Lumical 的精度能够达到 0.01%以上?通过设计一款这样的高
精度 Lumical 探测器Y希望能够有助于确定对撞机的综合光度?准确的光度数据对于研究电
弱过程?测试标准模型和探索潜在的新物理至关重要Y使 Lumical 成为 CEPC 中电弱点精确
物理研究的重要组成部分。
Lumical is a luminosity detector of CEPC Y used to detect positive and negative... -
Dongshuo Du (USTC)粒子物理实验技术Poster
In order to cope with the High-Luminosity Large Hadron Collider, the current ATLAS Muon system foresees a significant upgrade during the Long Shutdown-3. For the muon trigger, three layers of thin-gap Resistive Plate Chambers (RPC) will be added to the BI (Barrel Inner) region. This new generation of RPC benefits from the thin-gap structure to achieve the required higher rate capability.
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At... -
t fang (Central China Normal University)重离子物理Poster
Measurements of the production of heavy-flavour hadrons in proton–proton (pp) collisions provide an important test of quantum chromodynamics (QCD).
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The heavy-flavour production cross section can be calculated using the factorisation approach as a convolution of three factors: the parton distribution functions (PDFs), the partonic cross section calculated with perturbative QCD calculations,... -
德勇 段 (中国科学技术大学)粒子物理实验技术Poster
基于声子探测的新型荧光-热量两维读出低温晶体量热器技术，具有高能量分辨率和独特粒子鉴别能力，在低本底测量、稀有核衰变寻找等领域极具竞争力。
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报告主要介绍以BGO为核心吸收体的光-热两维读出晶体量热器研制，通过mK深冷低温测试，介绍针对BGO低温晶体量热器的最佳工作点的选取，基线的稳定性修正以及光热符合分析等；结果给出BGO晶体内Po210等alpha放射性污染含量、探测器能量分辨、以及alpha v.s. beta/gamma粒子鉴别能力。 -
xialei Jiang (C)重离子物理Poster
Heavy-ion collisions offer a new way to understand hypernuclei structure and hyperon-nucleon ($Y$-$N$) interaction. Recent hypernuclei measurements have focused on lifetime, binding energy, production yield, and collective flow in heavy-ion collisions. These measurements have increased interest in studying the structure of hypernuclei and their production mechanisms.
Meanwhile, femtoscopy...
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李昂 张 (华中师范大学)重离子物理Poster
Two-particle correlation analyses are often used to study the spatial and temporal extension of particle-emitting source in high-energy nuclear collisions. Precise information on the final state interactions amongst the particles under study can also be extracted from the measurement. It is particularly interesting to study the energy dependence of the extracted source size at the moment of...
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博洋 付 (Central China Normal University)重离子物理Poster
Femtoscopy is a powerful technique used to investigate the emission source and interaction potential between pairs of particles. The two-particle correlation function, which reveals valuable information about the space-time evolution of the emitting source and final state interaction, is the primary observable of interest. A detailed knowledge of hyperon-nucleon (Y-N) interaction is important...
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猷全 綦 (Central China Normal University)重离子物理Poster
Femtoscopic measurements are sensitive to the spatial and temporal characteristics of the particle emitting-source, allowing us to probe the properties of the matter created in heavy-ion collisions. In case of a first-order phase transition, the duration of pion emission is expected to increase. Therefore, measuring the energy dependence of the pion femtoscopy will help us to understand the...
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鹏辉 胡 (Central China Normal University)重离子物理Poster
We carry out a detailed study of medium modifications on momentum and angular correlations between a large transverse momentum hadron and a Z/γ trigger in relativistic heavy-ion collisions within a perturbative QCD parton model improved by the Sudakov resummation technique. The total energy loss of a hard parton propagating inside the medium is employed to modify the fragmentation function,...
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云阳 罗 (University of Science and Technology of China)粒子物理实验技术Poster
WIMP是最热门的暗物质候选粒子之一，近年来国际上有多个大型深地探测实验致力于WIMP的直接探测，包括位于我国四川锦屏地下实验室的PandaX。PandaX-4T是基于吨量级的氙的两相型TPC探测器，其低阈值、低本底、大灵敏体积、高探测效率等特点，使之跻身于WIMP探测前列。本报告将介绍PandaX-4T实验在WIMP暗物质的搜寻中信号响应模型，讨论模型的构建以及应用。
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Xin Xia (IHEP)粒子物理实验技术Poster
A pico-second timing (PIST) front-end electronic chip has been developed using $55~\mathrm{nm}$ CMOS technology for future electron-positron collider experiments (namely Higgs factories). Extensive tests have been performed to evaluate the timing performance of a dedicated SiPM-readout system equipped with a PIST chip. The results show that the system timing resolution can achieve...
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Jin-Wen Kang (Central China Normal University)重离子物理Poster
This work presents a phenomenological study on the angle between the Standard and the Winner-Take-All (WTA) jet axes ($\Delta R$) in high-energy nuclear collisions. Our theoretical results calculated by the LBT model show that the $\Delta R$ distribution in Pb+Pb at $\sqrt{s}=5.02$ TeV is narrower than that in p+p, which agrees well with the recent ALICE measurements. The narrowing of $\Delta...
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Dr Ze-Fang Jiang (Hubei Engineering University)重离子物理Poster
The directed flow in asymmetric collisions, such as Cu+Au, offers a valuable window into understanding the energy deposition mechanisms in heavy ion collisions, yet this remains an open challenge. In this work, we delve into the directed flow of charged hadrons in Cu+Au collisions at a center-of-mass energy of $\sqrt{s_{NN}}=200$ GeV. We develop a refined three-dimensional (3D) TRENTo initial...
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宜萱 金 (华中师范大学)重离子物理Poster
The production mechanism of light (anti-)nuclei in heavy-ion collisions can be either by the thermal model or the coalescence model. By studying the yields and ratios of light (anti-)nuclei, we can gain insight into their production mechanism and physical properties of the expanding system at freeze-out. Furthermore, the enhancement in the light nuclei compound ratios such as $\rm N_t \times...
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Hui Liu (Central China Normal University)重离子物理Poster
Light nuclei are loosely bound objects with a few MeV binding energies. The systematic measurement of light nuclei production in heavy-ion collisions across a wide energy range is a valuable tool to probe the QCD phase structure and gain insight into the underlying production mechanism. In 2018, RHIC started the second phase of the beam energy scan program (BES-II). The STAR Fixed Target (FXT)...
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Dr 瑞芹 王重离子物理Poster
We extend an analytical coalescence model to include the hyperon coalescence besides the nucleon coalescence to simultaneously study production properties of light nuclei and hyper-nuclei in heavy ion collisions at the LHC. We derive the formula of the momentum distribution of two baryons coalescing into deuteron-like states and that of three baryons coalescing into triton-like states. We...
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利娜 程强子物理与味物理Poster
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Zhiyu Zhao (TDLI/SJTU)粒子物理实验技术Poster
DarkSHINE, a fixed-target experiment leveraging the SHINE facility for light dark matter (LDM) detection, utilizes an 8 GeV electron beam with a 1-10 MHz repetition rate. Dark SHINE ECAL plays a crucial role in the precise measurement of recoil electron energies. This ECAL, featuring a homogeneous LYSO crystal scintillator structure, is designed for exceptional energy resolution, rapid...
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一飞 赵 (清华大学)粒子物理实验技术Poster
中微子-原子核相干弹性散射（CEvNS）是标准模型预言的物理过程，对反应堆中微子 CEvNS 过程的精确测量是对现有中微子实验的良好补充。反应堆中微子液氙相干散射实验（RELICS）计划基于 50 kg 量级液氙探测器（LXeTPC），借助反应堆的高中微子流强，在地面实现对反应堆中微子 CEvNS 信号的探测。为验证 RELICS 实验原理和技术，我们搭建了一个灵敏体积包含 0.56 kg 液氙的探测器原型机，并配备了制冷、纯化和数据采集等实验系统。此次报告将介绍 RELICS 原型机的开发、运行和测试工作，尤其是近期测试的 Ar-37、Kr-83m 等低能区信号特性，以及原型机单电子读出的进展和对 RELICS 低阈值探测原理的验证。这些进展有助于探索 RELICS 实验在低能区的响应特性，也可以用于测量低能区电子反冲情形下液氙和气氙的闪烁与电离参数。
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永华 詹强子物理与味物理Poster
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雪吟 刘强子物理与味物理Poster
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Zhiyu Zhao (TDLI/SJTU)粒子物理实验技术Poster
The future Circular Electron-Positron Collider (CEPC) is envisioned as a large-scale Higgs factory. For the CEPC detector system, a highly granular crystal electromagnetic calorimeter has been proposed to provide 5D information, incorporating x, y, z, E, and t dimensions. This calorimeter features a homogeneous structure with long crystal scintillator bars as the active material, with BGO and...
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Prof. Yang Liu (Sun Yat-sen University)粒子物理实验技术Poster
The tau lepton is the heaviest known lepton with a relatively long lifetime and approximately 65% hadronically decays, including undetectable neutrinos, leaving characteristic displacement, multiplicity, and kinematic properties, making the reconstruction, identification, and calibration very challenging. But the final states with hadronically decaying tau leptons play an important part in the...
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Dr 力 赵 (Shanghai Jiao Tong University)粒子物理实验技术Poster
The next generation liquid xenon detector will have about ~50T liquid xenon, the new designed powerful cryogenics and purificaton will be introduced, the results of the prototype will be given.
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Mr 康 刘 (Shanghai Jiao Tong University)粒子物理实验技术Poster
The DarkSHINE experiment proposes a novel approach to single-electron-on-fixed-target exploration, focusing on the search for dark photons through its invisible decay to dark matter particles. Central to its design is the tracker detector, engineered to deliver exceptional sensitivity in detecting light dark matter candidates. Leveraging advancements in detector technology, particularly the...
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Jingshu Li (Sun Yat-Sen (Zhongshan) University)粒子物理实验技术Poster
In high-energy physics experiments, visualization software is essential for tasks such as detector design, offline data processing, and enhancing physics analysis. Detailed detector geometries and architectures, formatted in GDML or ROOT, are integrated into platforms like Unity for three-dimensional modeling. In this study, focusing on the BESIII spectrometer, Unity is used to display BESIII...
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欣跃 巨 (中国科学技术大学)重离子物理Poster
With the extreme temperatures and energy densities generated by ultra-relativistic heavy-ion collisions, a new state of matter—Quark-Gluon-Plasma (QGP), with surprising fluid properties will be cr sions can generate a large initial angular momentum, resulting in strong vorticity of $\omega \approx (9 \pm 1)× 10^{21} s^{-1}$ in the fluid, estimated from the global $\Lambda$ hyperon polarization...
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YuJie Zeng (Sun Yat-Sen University)粒子物理实验技术Poster
DD4hep是一个通用的探测器描述工具包，已被推荐用于下一代高能物理实验中的离线软件开发。FBX是一种流行的3D建模文件格式，广泛应用于工业3D建模与可视化软件中。我们研究了一种新方法，能够自动将复杂的高能物理探测器描述从DD4hep格式自动转化为FBX格式的3D建模文件。该方法经测试可用于紧凑型直线对撞机CLIC、超级陶粲装置STCF、环形正负电子对撞机CEPC等多个未来实验中基于DD4hep的探测器描述。自动的DD4hep-FBX探测器转换接口为下一代高能物理实验中的应用开发提供了便利，如探测器设计、模拟、可视化、数据监控和科普宣传等。
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明萱 薛 (University of Science and Technology of China)粒子物理实验技术Poster
中子嬗变掺杂锗NTD-Ge是通过中子辐照及相应的嬗变掺杂过程产生具有十分均匀掺杂分布的锗半导体，在极低温度下其电阻对温度变化十分灵敏，且具有信号读出相对简单、大动态范围等独特优势，广泛应用于低温晶体量热器的热传感器。我们在中国先进研究堆对一批10N 纯度的高纯锗进行了热中子辐照，经过放射性冷却之后，对NTD-Ge的热中子辐照剂量、中子辐照缺陷以及载流子浓度等关键特性进行了测量研究。探索制定了NTD-Ge热传感器的电极制备流程，涉及表面抛光、离子注入、真空镀膜等多种微纳加工工艺，并解决了NTD-Ge金属电极粘附性差的问题。利用搭建的NTD-Ge极低温测试系统，对制备的NTD-Ge热传感器的极低温电阻-温度性能进行了测量，得到最低~20 mK低温下NTD-Ge的R-T特性符合理论预期的优良结果。
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Mr 宇靖 黄重离子物理Poster
早期的相对论重离子碰撞模拟程序通常忽略原子核的复杂内部结构，但先前的研究表明原子核形变显著影响椭圆流和带电粒子多重数分布。为了深入理解初态核结构的影响，我们在模拟中加入了核子-核子关联效应。在碰撞能量为3Gev的条件下，我们发现初态的核子-核子关联对快度、横动量分布以及各向异性流的影响并不显著，且这些物理量与初态核子关联的类型之间相关性较弱。为了进一步揭示影响末态分布的关键因素，我们采用点云神经网络学习核碰撞末态粒子间的关联和多事件的统计信息，从末态粒子分布提取初态核结构信息，并利用可解释性分析来识别对神经网络预测结果有显著影响的特征。
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宇 王 (华中师范大学)重离子物理Poster
对手征磁场效应(Chiral Magnetic Effect, CME)的测量在近十年的高能核物理实验领域是一个热门方向。通常的实验手段包括寻找带电粒子及其来源的部分子(parton)由于受磁场影响而产生的各向异性运动，尤其是在相对于碰撞反应平面(Reaction Plane, RP)垂直方向。为此需要分离CME驱动的信号和作为相对背景的集体事件流(flow)尤其是其二阶部分即椭圆流(elliptic...
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博 王 (山东大学)粒子物理实验技术Poster
伴随着SiPM探测器在PET探测器发展中的应用越来越广泛，PET对读出电子学的小型化和低能耗提出了新的要求。我们提出了一个可以提供128通道的多极性电荷数字转换器(dQDC)的前端电子学方案。整个前端板包括模拟电路板和数字电路板，其中每一个通道仅包含模拟电路板中两个电阻，一个运算放大器，一个电容，数字电路板中一个电压输入和放电的两个FPGA I/O接口。数字电路板采用了一个低功耗的FPGA作为整个电子学的数据采集系统，使用SSTL...
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子崴 赵 (Northwestern Polytechnical University)粒子物理实验技术Poster
正在我国进行建设的超级陶粲装置（STCF）中需要实现一种全新的、具有较好时间测量能力的电磁量能器（ECAL），以满足背景噪声抑制、中子-γ甄别等物理需求。对时间测量电子学的需求包括：不低于100-ps的分辨率、2-μs以上的动态范围以及可多通道集成。因此，我们提出了一种3级量化结构的时间数字转换器（TDC），其中粗量化由可达到较大动态范围的计数器实现；细量化则是基于一种改进的游标延迟环，利用两种延迟锁相环实现了亚门级延迟的高分辨率。所提出的游标延迟环采用了自动复位机制来实现连续事件的测量，还可利用滑动尺度测量原理显著提高其测量线性度。采用180-nm标准CMOS工艺实现了该TDC原型芯片，共集成了8个测量通道，在100-MHz参考时钟频率下可实现41.7-ps的分辨率和2.56-μs的动态范围。测试结果显示，该TDC的单射精度可达到46.0-ps，DNL不超过0.5-LSB，INL不...
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Xiaocong Ai (Zhengzhou University)粒子物理实验技术Poster
为了提高LHC的物理研究潜力，LHC将升级为高亮度大型强子对撞机（HL-LHC），束流亮度的提高将使质子-质子碰撞的堆积度提高到约200。由于高亮度导致的辐射损伤，ATLAS探测器中内径迹探测器（ITk）的最内两层硅像素探测器将在积分亮度达到2000...
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楠 李 (山东大学)粒子物理实验技术Poster
直流超导量子干涉仪（DC-SQUID）作为一种低噪声前放，利用磁通锁定的原理线性放大信号，广泛应用于超导边沿探测器（TES）信号的低温读出。为了分析信号，低温放大的信号需要在室温端进一步放大。本工作中，介绍了可以用于TES信号读出的多级串联SQUID阵列（SSA）设计，基于TES读出需求我们设计了一套适用于SSA的低噪声室温读出电子学。室温电子学除了进一步放大读出SSA的低温信号，还为SSA提供磁通反馈回路实现磁通锁定，以及SQUID工作需要的偏置电流、磁通输入信号。我们在4K脉管制冷机中，基于研制的室温电子学提供偏置电流、输入和反馈磁通，实现了磁通锁定放大。我们测试了SSA在不同偏置电流下的超导特性以及磁通响应。得到SQUID临界电流IC、SQUID磁通互感系数M，符合器件设计预期。最后对磁通锁定后系统的噪声成分进行了分析，为下一步系统优化给出了参考。
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嘉铭 李 (中国科学技术大学)粒子物理实验技术Poster
微结构气体探测器（MPGD）由于其具有高位置分辨、便于大面积制作等优点而得到广泛关注，并逐渐被应用于新一代高能粒子探测实验中。然而，MPGD探测器由于其电荷量较小、收集时间较长以及高颗粒度的特性，对读出电子学性能和集成度提出了新的挑战。同时，鉴于波形数字化技术能够提供最详尽的信息，可根据不同的应用需求选择最佳的信号处理模式。因此，有必要针对MPGD探测器的需求研究新型高精度波形全数字化读出芯片。
本研究描述了一款用于MPGD探测器的波形数字化读出原型芯片的设计与初步测试工作。该芯片的每个通道内包含模拟信号调理电路、可配置阈值的有效信号鉴别器、高速采样电容阵列以及并行量化模块。芯片包含48 fC至10 pC多个可选择的动态范围以适应不同的探测器增益，70 ns~1000 ns共五个不同的成形时间以适应不同的输入信号与探测需求，每通道8...
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Tianzi Song (Sun Yat-sen University)粒子物理实验技术Poster
探测器描述是高能物理实验离线软件中的重要组成部分。Unity等专业的可视化平台拥有目前工业界最先进的可视化技术与软硬件支持，可以帮助实现复杂探测器的可视化，为实验中的探测器设计、模拟重建、事例显示等工作带来便利。本项工作重点在于开发一个通用的自动接口，能够高效地将高能物理实验离线软件中目前以GDML, DD4hep, ROOT, Geant4等格式描述的探测器自动转化为工业界流行的FBX格式，并在Unity等软件中导入从而实现探测器自动建模。该转化接口已成功应用于BESIII、JUNO、EicC、CEPC、STCF、CLIC等多个实验中不同类型的探测器描述，将其转换成FBX格式三维模型并导入到Unity中实现显示。该自动转化接口能够为现有和未来高能物理实验中的探测器设计、离线软件开发、物理分析乃至教育科普等起到辅助作用，同时也为事例显示、虚拟现实等进一步的可视化应用开发提供了良好的基础。
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子涵 俞 (Shandong University)重离子物理Poster
2023 年 STAR 合作组对重离子碰撞中矢量介子整体自旋排列的测量结果 [1] 表明，碰撞产生的夸克胶子等离子体 (QGP) 中的夸克不仅存在整体极化，还存在整体自旋关联，进而使得对碰撞系统中夸克自旋关联的研究成为了高能自旋物理领域新的增长点。在文献 [2] 中，我们提出了一种系统描述碰撞系统中夸克关联的方法，并证明了矢量介子的矢量极化和两夸克自旋关联之间有紧密联系。进一步地，在文献 [3] 中，我们利用相同的理论框架，发现自旋 3/2 重子的二阶和三阶张量极化，分别依赖于夸克系统中的两夸克和三夸克关联，并且计算了具体的极化分量与相应的夸克自旋关联之间的关系。本报告的主要目的是介绍自旋 3/2 重子张量极化和对应夸克关联之间的关系，以及如何通过测量自旋 3/2 粒子的级联衰变来确定相应的极化分量和夸克的自旋关联。
参考文献
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[1] M. S. Abdallah et...
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