P. Adsley, R. Neveling, P. Papka, Z. Dyers, J. W. Brümmer, C. Aa. Diget, N. J. Hubbard, K. C. W. Li, A. Long, D. J. Marin-Lambarri, L. Pellegri, V. Pesudo, L. C. Pool, F. D. Smit, S. Triambak
The combination of a magnetic spectrometer and ancillary detectors such as silicon detectors is a powerful tool for the study of nuclear reactions and nuclear structure. This paper discusses the recently commissioned silicon array called the CAKE which is designed for use with the K600 magnetic spectrometer at iThemba LABS.
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We demonstrate coincidence measurements of spatially entangled photons by means of a novel type of multi-pixel based detection array. The adopted sensor is a fully digital 8$\times$16 silicon photomultiplier array allowing not only photon counting but also per-pixel time stamping of the arrived photons with a resolution of 65 ps. Together with a frame rate of 500 kfps, this property exceeds the capabilities of conventional charge-coupled device cameras which have become of growing interest for the detection of transversely correlated photon pairs. The sensor is used to measure a second-order c…
Coincidence technique and the coincidence measurement systems have been developed and applied for over 40 years. Most of popular coincidence measurement systems were based on analog electronics techniques such as time to amplitude conversion (TAC) or logic selecting coincidence unit. The above-mentioned systems are relatively cumbersome and complicated to use. With the strong growth of digital electronics techniques and computational science, the coincidence measurement systems will be constructed simpler but more efficient with the sake of application. This article presents the design princip…
Fast array-based particle coincidence detection in a TimePix3-based velocity map imaging instrument
本文提出了一种基于数组的快速数据处理算法，用于提升TimePix3基速度映射成像仪器中粒子击中检测的效率与精度。
The coincidence technique and the coincidence spectroscopy have been developed and applied for over 40 years. Most of popular coincidence measurement systems were based on analog electronics techniques such as time to amplitude conversion (TAC) or logic selecting coincidence unit. The above-mentioned systems are relatively cumbersome and complicated to use. With the strong growth of digital electronics techniques and computational science, the coincidence measurement systems will be constructed simpler but more efficient with the sake of application. This article presents the design principle …
Positron Emission Tomography (PET) using time-of-flight information, which can greatly improve the quality of the reconstructed image, has recently become an exciting topic. In this work, 3.2mm*3.2mm*25mm finger-like LYSO crystals were used to make a 5*5 array, coupled to the Hamamatsu H8500 photomultiplier tube (PMT) as a detector. A fast leading-edge discriminator was designed for the LYSO-H8500 detector. Average coincidence time resolution FWHM of 330 ps was obtained for the LYSO detector with a reference BaF2 detector, whose time resolution for 511 keV γ-rays was FWHM 150 ps. Time resoluti…
A simple model for multiple coincidence SiPM dark noise
针对硅光电倍增管（SiPM）多像素同时触发的暗噪声特性，推导关联暗噪声率与多重符合事件发生率的简单统计公式。
The ICESPICE demonstrator for particle/$γ$-$e^{-}$ coincidence experiments at Florida State University
ICESPICE演示装置通过模块化设计和磁铁配置实现低能核结构研究中的粒子/γ-e⁻同时测量，展示了其在束流内部转换电子谱学中的应用潜力。
Aiming to measure the difference in arrival times of two coincident gamma-photons with an accuracy in the order of 200 ps, time-of-flight positron emission tomography systems commonly employ silicon photomultipliers (SiPMs) and high-resolution digitization electronics, application specific integrated circuits (ASICs). This work evaluates the performance of the TOFPET2 ASIC, released by PETsys Electronics S.A. in 2017, dependent on its configuration parameters in multi-channel coincidence measurements. SiPM arrays fabricated by different vendors (KETEK, SensL, Hamamatsu, Broadcom) were tested i…
Recent theoretical and experimental results have brought renewed interest and focus on the topic of fission fragment angular momentum. Measurements of neutrons and $γ$ rays in coincidence with fission fragments remain the most valuable tool in the exploration of fission physics. To achieve these scientific goals, we have developed a system that combines a state-of-the-art fission fragment detector and $n$-$γ$ radiation detectors. A new twin Frisch-gridded ionization chamber has been designed and constructed for use with a spontaneous fission source and an array of forty \textit{trans}-stilbene…
Coincidence detection of single photons is crucial in numerous quantum technologies and usually requires multiple time-resolved single-photon detectors. However, the electronic readout becomes a major challenge when the measurement basis scales to large numbers of spatial modes. Here, we address this problem by introducing a two-terminal coincidence detector that enables scalable readout of an array of detector segments based on superconducting nanowire microstrip transmission line. Exploiting timing logic, we demonstrate a 16-element detector that resolves all 136 possible single-photon and t…
The Washington Area Large-scale Time coincidence Array (WALTA) is placing particle detector arrays in secondary schools in the Seattle area to build up a large-scale ultra-high energy cosmic ray detector network, one of several such projects around the world. Scintillation counters salvaged from the CASA experiment in cooperation with the CROP group at the University of Nebraska at Lincoln are refurbished by teachers and students, tested, calibrated, and installed in four-fold arrays at high school sites. To identify time coincidences, a GPS time synchronization system is employed. Data are ac…
The Electron-Gamma Coincidence Setup DAGOBERT
本文介绍了在 S-DALINAC 的 QCLAM 电子谱仪上扩展的 DAGOBERT γ 探测器阵列，通过电子-伽马符合测量首次研究了 ⁹⁶Ru 核的高激发态结构，显著提升了核结构研究的灵敏度。
Stacked geometry concept for CosmicWatch based muon detectors in coincidence mode
本文提出了一种基于堆叠几何结构的低成本muon探测器，通过coincidence模式提高信号纯度，并在日全食期间验证了其稳定性和可靠性。
BlueSTEAl: A pair of silicon arrays and a zero-degree phoswich detector for studies of scattering and reactions in inverse kinematics
本文开发了由环形硅阵列和零度phoswich探测器组成的BlueSTEAl系统，用于逆运动学中放射性离子束的散射与反应研究，具备同位素分离与高计数率粒子鉴别能力。
Mitigating Deadtime in Distributed Optical Arrays Using A Liveness-Aware Trigger Approach for High-Energy Neutrino Detection
本文提出一种具有存活意识的触发方法，用于缓解分布式光学阵列中的死时间问题，通过递归IIR更新定律保持连续性，提升高能中微子探测的信噪比和效率。
A prototype neutron-detector array for future deep-underground s-process studies
本文提出一种由EJ-309液体闪烁体与六个3He正比计数器组成的中子探测器阵列原型，并在FRANZ装置上验证其中子探测、n/γ甄别及符合性能，为深地s-过程实验和22Ne(alpha,n)25Mg反应截面测量奠定基础。
Here we describe an advanced multi functional, variable-energy positron beam system capable of measuring the energies of multiple positron-induced electrons in coincidence with the Doppler-shifted gamma photon resulting from the annihilation of the correlated positron. The measurements were carried out using the unique characteristics of the digital time-of-flight spectrometer and the gamma spectrometer available with the advanced positron beam system. These measurements have resulted in (i) the first digital time of flight spectrum of positron annihilation-induced Auger electrons generated us…
The neutron array of the compact spectrometer for heavy ion experiments in Fermi energy region
本文研制了用于CSHINE的20单元中子阵列，通过模拟与实验测试验证了其时间分辨、n-γ甄别和飞行时间性能，并在25 MeV/u的124Sn+124Sn实验中测量了中子能谱。
The Kaos spectrometer is maintained by the A1 collaboration at the Mainz Microtron MAMI with a focus on the study of (e,e'K^+) coincidence reactions. For its electron-arm two vertical planes of fiber arrays, each comprising approximately 10 000 fibers, are operated close to zero degree scattering angle and in close proximity to the electron beam. A nearly dead-time free DAQ system to acquire timing and tracking information has been installed for this spectrometer arm. The signals of 144 multi-anode photomultipliers are collected by 96-channel front-end boards, digitized by double-threshold dis…
The X-IFU is the cryogenic spectrometer onboard the future ATHENA X-ray observatory. It is based on a large array of TES microcalorimeters, which works in combination with a Cryogenic AntiCoincidence detector (CryoAC). This is necessary to reduce the particle background level thus enabling part of the mission science goals. Here we present the first joint test of X-IFU TES array and CryoAC Demonstration Models, performed in a FDM setup. We show that it is possible to operate properly both detectors, and we provide a preliminary demonstration of the anti-coincidence capability of the system ach…
Probing Internal Conversion and Dark-Matter-Induced De-excitation of 180mTa with a gamma-ray TES Array
利用γ射线TES阵列探测180mTa的内转换和暗物质诱导去激发，通过高灵敏度能量测量和延迟协现标记提升探测能力。
Characterization of a TES-based Anti-Coincidence Detector for Future Large Field-of-View X-ray Calorimetry Missions
面向未来大视场X射线量热任务，研制并表征基于钨TES与QET并联网络的大幅面反符合探测器，实现<1 keV阈值、>96%活时间及毫米级空间分辨。
Inter-pixel cross-talk as background to two-photon interference effects in SPAD arrays
该研究表征 LinoSPAD2 的像素间串扰，并将其与 HBT 双光子干涉联合测量和交叉校准，量化了近邻及长程串扰概率。
Temperature-Dependent Characterization of Large-Area Superconducting Microwire Array with Single-Photon Sensitivity in the Near-Infrared
本文首次对4通道WSi超导微米线单光子探测器阵列进行温度依赖性表征，发现其在近红外波段具有饱和探测效率、低暗计数及跨像素相关暗计数，为低背景暗物质探测奠定基础。
The MUGAST-AGATA-VAMOS set-up at GANIL combines the MUGAST highly-segmented silicon array with the state-of-the-art AGATA array and the large acceptance VAMOS spectrometer. The mechanical and electronics integration copes with the constraints of maximum efficiency for each device, in particular γ-ray transparency for the silicon array. This complete set-up offers a unique opportunity to perform exclusive measurements of direct reactions with the radioactive beams from the SPIRAL1 facility. The performance of the set-up is described through its commissioning and two examples of transfer reactio…
Response of G-NUMEN LaBr$_3$(Ce) detectors to high counting rates
本文介绍 G-NUMEN γ谱仪在高计数率条件下的 LaBr$_3$(Ce) 探测器响应测试，以支持 NUMEN 实验对 DCE 反应和 $0νββ$ 核矩阵元的研究。
Recursive Manifold Coherence for Deadtime-Aware Distributed Triggering through Geometric State Estimation
递归流形一致性通过将触发逻辑转化为连续状态估计问题，提升分布式系统中死时间恢复的鲁棒性与准确性。
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