Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment最新文献

{"title":"Simulation tool development and sensitivity analysis of 160Gd double beta decay search by the PIKACHU project","authors":"T. Omori ,&nbsp;T. Iida ,&nbsp;N. Hinohara ,&nbsp;K. Takahashi ,&nbsp;K. Fushimi ,&nbsp;A. Gando ,&nbsp;K. Hosokawa ,&nbsp;S. Ishidate ,&nbsp;M. Ishigami ,&nbsp;K. Kamada ,&nbsp;K. Mizukoshi ,&nbsp;Y. Shoji ,&nbsp;H. Suzuki ,&nbsp;M. Yoshino","doi":"10.1016/j.nima.2025.171023","DOIUrl":"10.1016/j.nima.2025.171023","url":null,"abstract":"<div><div>The PIKACHU project searches for the previously unobserved two-neutrino double beta decay (2<span><math><mrow><mi>ν</mi><mn>2</mn><mi>β</mi></mrow></math></span>) of ¹⁶⁰Gd using Ce-doped GAGG crystals. Phase 1 aims to improve the current lower limit on the 2<span><math><mrow><mi>ν</mi><mn>2</mn><mi>β</mi></mrow></math></span> half-life of 1.9 × 10¹⁹ years (90% C.L.), and Phase 2 targets the observation of 2<span><math><mrow><mi>ν</mi><mn>2</mn><mi>β</mi></mrow></math></span> in ¹⁶⁰Gd with a sensitivity beyond theoretical prediction of 7.4 × 10²⁰ years. In the present paper, we developed background models using GEANT4, including contributions from uranium/thorium chains, ⁴⁰K, and external <span><math><mi>γ</mi></math></span>-rays. Additionally, signal models for 2<span><math><mrow><mi>ν</mi><mn>2</mn><mi>β</mi></mrow></math></span> and neutrino-less mode, 0<span><math><mrow><mi>ν</mi><mn>2</mn><mi>β</mi></mrow></math></span> were also implemented. The background model reproduces experimental energy spectra well, allowing us to estimate a Phase 1 sensitivity for 2<span><math><mrow><mi>ν</mi><mn>2</mn><mi>β</mi></mrow></math></span> of 4.0 <span><math><mo>×</mo></math></span> 10¹⁹ years (90% C.L.) from pseudo data analysis.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171023"},"PeriodicalIF":1.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Readout electronics onboard the First Pathfinder (CATCH-1) of the CATCH Constellation Space Mission","authors":"Yajun Li ,&nbsp;Kang Zhao ,&nbsp;Zhengwei Li ,&nbsp;Xiangyang Wen ,&nbsp;Min Gao ,&nbsp;Qian-Qing Yin ,&nbsp;Lian Tao ,&nbsp;Panping Li ,&nbsp;Qingchang Zhao ,&nbsp;Shujie Zhao ,&nbsp;Yiming Huang ,&nbsp;Jingyu Xiao ,&nbsp;Bin Meng ,&nbsp;Sheng Yang ,&nbsp;Yusa Wang ,&nbsp;Zijian Zhao ,&nbsp;Tianxiang Chen ,&nbsp;Yifan Zhang ,&nbsp;Jiewei Cao ,&nbsp;Wen Chen ,&nbsp;Heng Zhou","doi":"10.1016/j.nima.2025.170977","DOIUrl":"10.1016/j.nima.2025.170977","url":null,"abstract":"<div><div>CATCH-1 is the first pathfinder within the Chasing All Transients Constellation Hunters (CATCH) space mission. Its payloads include the Silicon Drift Detector (SDD) system and light-weight X-ray optics. The main goal of CATCH-1 is to validate key technologies of the timing satellites in the constellation, such as the electronics of the SDD detector system, Micro-Pore Optics (MPO), and the deployable mast. The SDD detector system is required to operate with high energy resolution and dead time to detect various transients. This paper presents the design and performance of the SDD electronics system of CATCH-1. The electronics system comprises front-end electronics (FEE) and a data acquisition system (DAQ). Test results demonstrate that the energy resolution of all four detector channels are better than 150 eV at 5.9 keV, with the energy band ranging from 0.5 to 8 keV, and the dead time is better than <span><math><mrow><mn>10</mn><mspace></mspace><mi>μ</mi><mi>s</mi></mrow></math></span>, meeting the design specifications.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170977"},"PeriodicalIF":1.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction and characterization of a time-of-flight chopper prototype at the RA-6 experimental reactor of the Bariloche Atomic Centre (Argentina)","authors":"L.A. Rodríguez Palomino ,&nbsp;J. Dawidowski ,&nbsp;N.S. Schmidt ,&nbsp;F. Sánchez ,&nbsp;I.P. Sidelnik","doi":"10.1016/j.nima.2025.171010","DOIUrl":"10.1016/j.nima.2025.171010","url":null,"abstract":"<div><div>Choppers have been key instruments in time-of-flight (TOF) experiments in nuclear research reactors since the mid-20th century. Their main function is to chop the neutron beams at well-defined time intervals, which allows the energy of the neutrons to be determined by measuring the time of flight to the detector positions. This work presents the construction, installation and characterization of NAHUEL, a prototype chopper-based time-of-flight (TOF) instrument, that has recently been installed at the RA-6 experimental reactor of the Bariloche Atomic Centre, Argentina. Firstly, the principle of operation and design details of the chopper are described. This is followed by a description of beam shaping aimed at reducing gamma and fast neutron background, including the collimation and shielding configuration for the incident beam. The design of the detection system and data acquisition electronics for time-of-flight (TOF) spectra determination is also presented. Additionally, the experimental setup for neutron transmission measurements is outlined. The characterization and optimization of key system parameters such as background, energy resolution, and dead time of the acquisition system are addressed. To analyze the measured spectra, a fitting procedure was applied using a model combining a Maxwellian distribution, characterized by a temperature, plus an epithermal component. Transmission measurements in reference materials were performed to determine their total cross sections, which were then compared with previous experimental data. The system was proven to provide reliable measurements of transmission between 10 and 200 meV. Finally, Bragg edge transmission studies of a known polycrystalline material were conducted to assess the system’s energy resolution under different operating conditions.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171010"},"PeriodicalIF":1.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards high-resolution X-ray spectral imaging","authors":"M. Minuti ,&nbsp;L. Baldini ,&nbsp;R. Bellazzini ,&nbsp;A. Bisht ,&nbsp;A. Boscardin ,&nbsp;A. Brez ,&nbsp;M. Ceccanti ,&nbsp;L. Latronico ,&nbsp;L. Lucchesi ,&nbsp;A. Manfreda ,&nbsp;L. Orsini ,&nbsp;M. Pesce-Rollins ,&nbsp;M. Pinchera ,&nbsp;A. Profeti ,&nbsp;S. Ronchin ,&nbsp;C. Sgrò ,&nbsp;G. Spandre","doi":"10.1016/j.nima.2025.171001","DOIUrl":"10.1016/j.nima.2025.171001","url":null,"abstract":"<div><div>This work presents the development and preliminary testing of a novel class of Hybrid Pixel Detectors (HPDs), built by coupling a low-noise, event-driven analog readout ASIC with a fine-pitch solid-state pixel sensor. Our new HPD builds upon XPOL-III, a readily-available cutting-edge 180 nm CMOS VLSI ASIC integrating over 100,000 pixels with fully analog readout at 50<span><math><mrow><mspace></mspace><mi>μ</mi><mtext>m</mtext></mrow></math></span> pitch on a hexagonal grid, with an active area of <span><math><mrow><mn>15</mn><mo>×</mo><mn>15</mn><mspace></mspace><msup><mrow><mtext>mm</mtext></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span>. We developed two versions of the hybrid device: one with 750<span><math><mrow><mspace></mspace><mi>μ</mi><mtext>m</mtext></mrow></math></span> thick and 100<span><math><mrow><mspace></mspace><mi>μ</mi><mtext>m</mtext></mrow></math></span> pixel pitch, Schottky-type CdTe sensor, and one with 300<span><math><mrow><mspace></mspace><mi>μ</mi><mtext>m</mtext></mrow></math></span> thick and 50<span><math><mrow><mspace></mspace><mi>μ</mi><mtext>m</mtext></mrow></math></span> pixel pitch silicon sensor. The assembled devices exhibit excellent performance with full single-photon sensitivity, demonstrating strong potential for advanced X-ray spectral imaging applications. Spatial and energy resolution measurement results for both the silicon and CdTe devices will be presented. These results open up exciting perspectives for the implementation of high-performance HPDs in various fields requiring precise X-ray imaging and spectroscopy. We will discuss the detailed performance metrics of the two devices and explore the implications of this technology for future developments in X-ray detection systems.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171001"},"PeriodicalIF":1.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Placement and routing method based on picosecond time-to-digital converter","authors":"Min Zhu ,&nbsp;Qiaoliang Tao ,&nbsp;Lin Lai ,&nbsp;Qiang Gao ,&nbsp;Siyu Gao","doi":"10.1016/j.nima.2025.171033","DOIUrl":"10.1016/j.nima.2025.171033","url":null,"abstract":"<div><div>The Time-to-Digital Converter (TDC) is a precise time-measuring device utilized for the accurate measurement of time intervals. It finds extensive applications in nuclear science, medicine, precision instrumentation, and various other fields. The measurement precision and resolution of a TDC are critical parameters that significantly influence the overall performance of the system. This article presents an implementation scheme for a TDC based on Field-Programmable Gate Arrays (FPGA). Additionally, considering the underlying hardware architecture of FPGAs, it highlights potential placement and routing issues that may arise during the design process of the FPGA-based TDC and conducts a corresponding theoretical analysis and design implementation to address these issues. Furthermore, this study focuses on designing a control experiment to investigate the relationship between the clock paths of each register and the externally input trigger signals, as well as the data input pins of each register. Based on the average values of three Time Delay Lines (TDLs), it is observed that when two different clock placement and routing methods are employed for the TDL, the difference in sampling time ranges is 54.334 ps, while the difference in TDL resolutions is 0.047 ps. This investigation emphasizes the importance of clock path design in optimizing TDC performance.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171033"},"PeriodicalIF":1.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The ladder and readout cables of intermediate silicon strip detector for sPHENIX","authors":"Y. Akiba ,&nbsp;H. Aso ,&nbsp;J.T. Bertaux ,&nbsp;D. Cacace ,&nbsp;K.Y. Chen ,&nbsp;K.Y. Cheng ,&nbsp;A. Enokizono ,&nbsp;H. Enyo ,&nbsp;K. Fujiki ,&nbsp;Y. Fujino ,&nbsp;M. Fujiwara ,&nbsp;T. Hachiya ,&nbsp;T. Harada ,&nbsp;S. Hasegawa ,&nbsp;M. Hata ,&nbsp;B. Hong ,&nbsp;J. Hwang ,&nbsp;T. Ichino ,&nbsp;M. Ikemoto ,&nbsp;D. Imagawa ,&nbsp;W. Xie","doi":"10.1016/j.nima.2025.171020","DOIUrl":"10.1016/j.nima.2025.171020","url":null,"abstract":"<div><div>A new silicon-strip-type detector was developed for precise charged-particle tracking in the central rapidity region of heavy ion collisions. A new detector and collaboration at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory is sPHENIX, which is a major upgrade of the PHENIX detector. The intermediate tracker (INTT) is part of the advanced tracking system of the sPHENIX detector complex together with a CMOS monolithic-active-pixel-sensor based silicon-pixel vertex detector, a time-projection chamber, and a micromegas-based detector. The INTT detector is barrel shaped and comprises 56 silicon ladders. Two different types of strip sensors of <span><math><mrow><mn>78</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> pitch and <span><math><mrow><mn>320</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> thick are mounted on each half of a silicon ladder. Each strip sensor is segmented into 8 × 2 and 5 × 2 blocks with lengths of 16 and 20 mm. Strips are read out with a silicon strip-readout (FPHX) chip. In order to transmit massive data from the FPHX to the down stream readout electronics card (ROC), a series of long and high speed readout cables were developed. This document focuses on the silicon ladder, the readout cables, and the ROC of the INTT. The radiation hardness is studied for some parts of the INTT devices in the last part of this document, since the INTT employed some materials from the technology frontier of the industry whose radiation hardness is not necessarily well known.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171020"},"PeriodicalIF":1.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electron cloud studies for DAΦNE collider and e+e− future circular collider damping ring","authors":"Ozgur Etisken ,&nbsp;Danilo Quartullo ,&nbsp;Senem Ozdemir ,&nbsp;Giovanni Franzini ,&nbsp;Catia Milardi ,&nbsp;Mikhail Zobov ,&nbsp;Antonio De Santis ,&nbsp;Rena Ciftci","doi":"10.1016/j.nima.2025.171019","DOIUrl":"10.1016/j.nima.2025.171019","url":null,"abstract":"<div><div>The electron cloud (e-cloud) is a critical collective effect that can significantly affect the performance of accelerators storing positively charged particles. Its presence can lead to transverse instabilities, beam losses, emittance growth, energy deposition, and vacuum degradation. This paper presents measurements of e-cloud-induced coupled bunch instabilities and betatron oscillations tune shifts in the positron ring of the DA<span><math><mi>Φ</mi></math></span>NE electron-positron collider, along with supporting e-cloud build-up simulations. The numerical code for the e-cloud build-up simulations, once validated with DA<span><math><mi>Φ</mi></math></span>NE measurements, has been used to simulate the e-cloud formation in the Damping Ring (DR) of the positron–electron Future Circular Collider (FCC-ee). The electron cloud density calculated numerically has been compared with the single bunch instability thresholds evaluated analytically, indicating that electron cloud instability can be potentially dangerous for the damping ring.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171019"},"PeriodicalIF":1.4,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of neutron and proton irradiated AC-LGAD sensors","authors":"G. Stage ,&nbsp;A. Borjigin ,&nbsp;J. Ding ,&nbsp;M. Davis ,&nbsp;S. Beringer ,&nbsp;M. Gignac ,&nbsp;F. McKinney-Martinez ,&nbsp;S.M. Mazza ,&nbsp;A. Molnar ,&nbsp;J. Ott ,&nbsp;H.F.-W. Sadrozinski ,&nbsp;B. Schumm ,&nbsp;A. Seiden ,&nbsp;T. Shin ,&nbsp;M. Wilder ,&nbsp;G. Kramberger ,&nbsp;I. Mandic ,&nbsp;S. Seidel ,&nbsp;J. Si ,&nbsp;R. Novotny","doi":"10.1016/j.nima.2025.171012","DOIUrl":"10.1016/j.nima.2025.171012","url":null,"abstract":"<div><div>Characterization of strip and pixel AC-LGAD devices with both laser TCT and probe station (IV/CV) will be shown on AC-LGADs irradiated with 1 MeV reactor neutrons at JSI/Ljubljana and with 400 MeV protons at FNAL ITA to fluences from 1e13 <span><math><mrow><msub><mrow><mi>n</mi></mrow><mrow><mi>e</mi><mi>q</mi></mrow></msub><mo>/</mo><msup><mrow><mi>cm</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> to a few times 1e15 <span><math><mrow><msub><mrow><mi>n</mi></mrow><mrow><mi>e</mi><mi>q</mi></mrow></msub><mo>/</mo><msup><mrow><mi>cm</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span>. This study was conducted within the scope of the ePIC detector time of flight (TOF) layer R&amp;D program at the EIC, which will feature AC-LGADs with strip and pixel geometry. Sensors in the TOF layer will receive up to 1e13 <span><math><mrow><msub><mrow><mi>n</mi></mrow><mrow><mi>e</mi><mi>q</mi></mrow></msub><mo>/</mo><msup><mrow><mi>cm</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> fluence over the lifetime of the experiment.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171012"},"PeriodicalIF":1.4,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-purity tungsten produced via chemical vapor deposition for use in low-background detectors","authors":"M.L. di Vacri ,&nbsp;A. Fortini ,&nbsp;T.D. Schlieder ,&nbsp;K.P. Hobbs ,&nbsp;I.J. Arnquist ,&nbsp;E.W. Hoppe ,&nbsp;D. Hughes","doi":"10.1016/j.nima.2025.171018","DOIUrl":"10.1016/j.nima.2025.171018","url":null,"abstract":"<div><div>Strict radiopurity constraints limit the type and amount of materials available for use in low-radioactivity detectors. Additional properties (e.g., yield strength and density) are required for materials to be used as structural or shielding components, further limiting availability. In this work, chemical vapor deposition (CVD) was investigated as a means to produce ultra-pure tungsten, a material with desirable density and mechanical properties. The radiopurity of the samples produced via CVD was verified using inductively coupled plasma mass spectrometry, focusing on impurities of ²³²Th and ²³⁸U. Due to the formation of tungsten-based polyatomic species in the plasma affecting ²³²Th and ²³⁸U determinations, an analytical method involving matrix separation and the use of a triple-quadrupole mass spectrometer was developed. Method detection limits in the ppq (parts per quadrillion, or fg g⁻¹ of solid tungsten) were obtained. Method recoveries ranged from 10%–50% and were determined using non-natural ²²⁹Th and ²³³U tracers. The CVD technique proved to be effective at producing ultra-pure samples of tungsten, which were measured in the ppt (parts per trillion, or pg g⁻¹ of solid tungsten) to sub-ppt range for ²³²Th and ²³⁸U.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171018"},"PeriodicalIF":1.4,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front-end readout electronics design for the anti-coincidence detector and charge detector in VLAST","authors":"Zuoqiao Yang ,&nbsp;Junwei Yan ,&nbsp;Qianshun She ,&nbsp;Yilang An ,&nbsp;Fang Fang ,&nbsp;Yongjie Zhang ,&nbsp;Yuhong Yu ,&nbsp;Xiangman Liu ,&nbsp;Ziyang Wei ,&nbsp;Qi An ,&nbsp;Jianhua Guo ,&nbsp;Qiang Wan ,&nbsp;Yan Zhang ,&nbsp;Zhiyu Sun ,&nbsp;Jie Kong","doi":"10.1016/j.nima.2025.171015","DOIUrl":"10.1016/j.nima.2025.171015","url":null,"abstract":"<div><div>Building on experience gained from the DArk Matter Particle Explorer (DAMPE) mission, a new satellite mission-the Very Large Area gamma-ray Space Telescope (VLAST) is proposed to advance <span><math><mi>γ</mi></math></span>-ray observations and extend cosmic-ray nucleus measurements to zirconium (Zr, Z = 40) or heavier ions. As key subdetectors of VLAST, the charge detector requires a wide dynamic range to measure cosmic-ray particles from protons to ultra-heavy ions, while the anti-coincidence detector must exhibit high detection efficiency. This paper presents the prototype design of an electronic readout system applicable to both detectors. Charge information is derived via high-precision measurement using the IDE3381 ASIC, featuring amplification, shaping, and trigger signal functions. Data from waveform digitization are processed by the Data Acquisition (DAQ) board and categorized into scientific data and trigger signals, and transmitted to the host PC and trigger logic unit. Preliminary tests indicate the system has noise levels below 28 fC, a dynamic range of 100 fC to 40 pC, and can handle event rates of <span><math><mo>&lt;</mo></math></span>370 kHz. With the assistance of the electronic system, the Anti-Coincidence Detector (ACD) tile achieves a detection efficiency of 99.9% for a threshold of 0.3 Minimum Ionizing Particles (MIPs) and the charge detector (CD) are capable of performing measurements and identification of ultra-heavy ions.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 171015"},"PeriodicalIF":1.4,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}