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

{"title":"Design and validation of a compact extraction and matching system for high current applications","authors":"Aristeidis Mamaras ,&nbsp;Jean-Baptiste Lallement ,&nbsp;Alessandra Lombardi ,&nbsp;Francesco di Lorenzo ,&nbsp;Christophe Machado ,&nbsp;Cristiano Mastrostefano ,&nbsp;Pierre Moyret ,&nbsp;Michael O'Neil ,&nbsp;Benoit Riffaud ,&nbsp;Dimitrios Sampsonidis ,&nbsp;Frantisek Sanda ,&nbsp;Edgar Sargsyan ,&nbsp;Julien Thiboud ,&nbsp;Callum Tetrault","doi":"10.1016/j.nima.2026.171324","DOIUrl":"10.1016/j.nima.2026.171324","url":null,"abstract":"<div><div>A novel compact extraction system has been developed at CERN to optimize high-current linacs for medical and industrial use. Replacing the traditional LEBT with a 2 cm-long electrode-based design, it enables efficient proton extraction and acceleration to 45 keV. Tested at the Linac4 test stand, both experimental and simulation results confirm its ability to match to the RFQ acceptance with improved beam quality and reduced footprint, offering a viable solution for next-generation compact linacs.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171324"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190877","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":"Status of the Southern Wide-field Gamma-ray Observatory","authors":"Hazal Göksu ,&nbsp;SWGO Collaboration","doi":"10.1016/j.nima.2026.171304","DOIUrl":"10.1016/j.nima.2026.171304","url":null,"abstract":"<div><div>The Southern Wide-field Gamma-Ray Observatory (SWGO) will be a next-generation gamma-ray observatory located in the Southern Hemisphere. Building upon the experience of previous and current ground-based particle array observatories, SWGO will feature a large detection area, a high-altitude site, and a southern location to explore the gamma-ray sky up to PeV energies. Following the recent site selection at Pampa la Bola in Chile, located at an altitude of 4770 meters above sea level, the collaboration is now focusing on developing an on-site pathfinder. In this contribution, we present the current status of SWGO, highlight recent progress in R&amp;D activities, and outline the future plans for the observatory.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171304"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190956","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":"iactsim: A CUDA-accelerated simulation framework for IACTs","authors":"D. Mollica ,&nbsp;A. D’Aì ,&nbsp;C. Bigongiari ,&nbsp;F. Pintore","doi":"10.1016/j.nima.2026.171330","DOIUrl":"10.1016/j.nima.2026.171330","url":null,"abstract":"<div><div>The data analysis of Imaging Atmospheric Cherenkov Telescopes (IACTs) requires large-scale Monte Carlo simulations of air showers and the detailed simulation of telescope optics and Cherenkov camera. Within the simulation of the telescope response, optical ray-tracing and camera electronics simulation are the most time-consuming steps. Fortunately, these tasks involve many independent calculations (photon propagation and pixel response) that can be run concurrently. This makes them ideal candidates for acceleration using Graphics Processing Units, which have become widespread in both High Performance Computing systems and consumer hardware over the past decade due to their high parallel processing power and energy efficiency.</div><div>We have developed <figure><img></figure> , a Python simulation framework, using CUDA to parallelize these specific tasks. <figure><img></figure> is designed as a user-friendly and adaptable set of tools to support IACT performance evaluation, instrument design and data analysis. We have validated the framework capabilities by simulating the ASTRI dual-mirror optical system and its SiPM-based camera, confirming its effectiveness even in its early development stage. Although it has been designed for IACT simulations, a key feature of <figure><img></figure> is the separation between the optical ray-tracing and the camera electronics simulation. This modularity allows users to simulate the pixel response independently, using photon propagation results generated by external software (such as <span>Geant4</span>).</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171330"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190963","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":"Corrigendum to “Calibration of the NEVOD-EAS array for detection of extensive air showers” [Nucl. Instrum. Methods Phys. Res. Sect. A Accel. Spectrom. Detect. Assoc. Equip. 1057 (December 2023), 168795]","authors":"M.B. Amelchakov ,&nbsp;A.G. Bogdanov ,&nbsp;A. Chiavassa ,&nbsp;A.N. Dmitrieva ,&nbsp;D.M. Gromushkin ,&nbsp;E.P. Khomchuk ,&nbsp;S.S. Khokhlov ,&nbsp;R.P. Kokoulin ,&nbsp;K.G. Kompaniets ,&nbsp;A. Yu Konovalova ,&nbsp;G. Mannocchi ,&nbsp;K.R. Nugaeva ,&nbsp;A.A. Petrukhin ,&nbsp;I.A. Shulzhenko ,&nbsp;G. Trinchero ,&nbsp;I.I. Yashin ,&nbsp;E.A. Yuzhakova","doi":"10.1016/j.nima.2026.171282","DOIUrl":"10.1016/j.nima.2026.171282","url":null,"abstract":"","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171282"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191073","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":"Evaluation of SiC detector performances for energy and timing measurements","authors":"N.S. Martorana ,&nbsp;G. D’Agata ,&nbsp;A. Barbon ,&nbsp;G. Cardella ,&nbsp;E. De Filippo ,&nbsp;E. Geraci ,&nbsp;C. Guazzoni ,&nbsp;L. Acosta ,&nbsp;C. Altana ,&nbsp;A. Castoldi ,&nbsp;A. Composto ,&nbsp;S. De Luca ,&nbsp;P. Figuera ,&nbsp;B. Gnoffo ,&nbsp;F. La Via ,&nbsp;C. Maiolino ,&nbsp;E.V. Pagano ,&nbsp;S. Pirrone ,&nbsp;G. Politi ,&nbsp;L. Quattrocchi ,&nbsp;C. Zagami","doi":"10.1016/j.nima.2026.171356","DOIUrl":"10.1016/j.nima.2026.171356","url":null,"abstract":"<div><div>The development of new detectors based on Silicon Carbide (SiC) is currently a topic of interest within the scientific community. The significant features of SiC make it highly promising for detecting charged particles, neutrons, and <span><math><mi>γ</mi></math></span>/X radiation. In this framework, within the SAMOTHRACE (Sicilian Micro and Nano Technology Research and Innovation Center) ecosystem, an array of new-generation SiC detectors is under development, specifically designed for nuclear and medical investigations using radioactive ion beams. This paper describes the results obtained in the characterization of SiC prototypes regarding energy and timing measurements. A new method, based on coincidence data analysis, is employed to evaluate the timing performances of SiC detectors. The obtained results have been compared with tests performed using a micro-channel plate as a start detector reference for timing measurements.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171356"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191072","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 design and development of a neutron source for calibrating delayed neutron monitor","authors":"Jiewei Cao,&nbsp;Zixiang Yang,&nbsp;Tingyu Jiao,&nbsp;Kexin Ma,&nbsp;Xiaoyang Wang,&nbsp;Zhenyuan Gu,&nbsp;Yuchang Mei,&nbsp;Wei Li","doi":"10.1016/j.nima.2026.171352","DOIUrl":"10.1016/j.nima.2026.171352","url":null,"abstract":"<div><div>The delayed neutron monitoring method plays a vital role in the detection of leaking fuel assemblies. However, the long-term lack of calibration technology has sometimes led to missed alarms or false alarms on the delayed neutron monitor. In this paper, a neutron source for calibrating a type of delayed neutron monitor is designed, simulated, developed and tested. The final test results demonstrate that the delayed neutron radiation field generated by the source with a customized calibration scheme is in line with theoretical expectations.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171352"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190242","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":"Data sorting modes of phoswich detector array","authors":"R. Li ,&nbsp;D. Verney ,&nbsp;C. Delafosse ,&nbsp;M.N. Harakeh ,&nbsp;A. Maj ,&nbsp;F. Didierjean ,&nbsp;L. Al Ayoubi ,&nbsp;H. Al Falou ,&nbsp;P. Bednarczyk ,&nbsp;G. Benzoni ,&nbsp;F. Le Blanc ,&nbsp;V. Bozkurt ,&nbsp;M. Ciemała ,&nbsp;F.C.L. Crespi ,&nbsp;I. Deloncle ,&nbsp;C. Gaulard ,&nbsp;A. Gottardo ,&nbsp;V. Guadilla ,&nbsp;J. Guillot ,&nbsp;K. Hadyńska-Klęk ,&nbsp;G. Tocabens","doi":"10.1016/j.nima.2026.171337","DOIUrl":"10.1016/j.nima.2026.171337","url":null,"abstract":"<div><div>The different data-sorting modes of the phoswich detector array PARIS used for detecting high-energy (4<span><math><mo>−</mo></math></span>10 MeV) <span><math><mi>γ</mi></math></span> rays are investigated. The characteristics including time resolution, energy resolution and detection efficiency under various modes are studied. The present study shows that PARIS has capabilities of rejecting escape and pileup events when used for decay spectroscopy. Notably, the methods presented in this work refer specifically to the <span><math><mi>β</mi></math></span>-decay experiment of <span><math><msup><mrow></mrow><mrow><mn>80</mn><mi>g</mi><mo>+</mo><mi>m</mi></mrow></msup></math></span>Ga conducted with three PARIS clusters comprising 27 phoswich detectors, rather than to a general report on the PARIS array or its overall performance for in-beam spectroscopy. Compared with the 2”<span><math><mo>×</mo></math></span>2”<span><math><mo>×</mo></math></span>2” LaBr<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>(Ce) detector (Ciemała et al., 2009), even in individual mode, PARIS provides significant suppression of single- and double-escape peaks and reduces background via vetoing function of the outer-volume NaI(Tl) crystals. In contrast to the common approach of adding back the energies in LaBr<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>(Ce) and NaI(Tl) to increase the detection efficiency of the full-energy peak, using NaI(Tl) as a veto shield provides a superior trade-off for applications where spectral purity is essential. Employing add-back analysis within each cluster of nine phoswiches or between all phoswiches could enhance full-energy peak efficiency and further suppress escape peaks and background. Applying a multiplicity condition provides a further suppression but simultaneously lowers the statistics of full-energy peaks.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171337"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190887","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":"Experimental observation of self-organised mode-locked emission in a W-band free-electron maser","authors":"H.S. Marks ,&nbsp;M. Khorosh","doi":"10.1016/j.nima.2026.171339","DOIUrl":"10.1016/j.nima.2026.171339","url":null,"abstract":"<div><div>Experimental observation is reported of passive, self-organised mode-locking in a high-power free-electron maser (FEM) oscillator operating near 103 GHz, using a ∼1.36 MeV, 1.15 A energy-recovered electron beam. Macropulses of 10 μs duration were recorded in which mode-locking is established from the onset of measurable radiation and persists throughout the pulse. Power-detector and heterodyne measurements show a regular train of kW-level spikes with a spacing of 10.4 ns, consistent with the cavity free spectral range. A modal analysis of the intermediate-frequency signal reveals strong phase coherence across more than sixteen longitudinal modes. A distinct sideband appears with a spacing that remains stable to within 0.2 MHz even though the carrier frequency drifts by several megahertz between pulses due to variations in beam energy. This behaviour contradicts the power-dependent scaling expected from synchrotron-driven FEL sidebands and instead indicates a cavity-anchored coupling mechanism. The results demonstrate that robust passive mode-locking can arise naturally in mm-wave FEM oscillators without external modulation.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171339"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190975","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 ARC compact RICH detector: Reconstruction and performance","authors":"S. Pezzulo ,&nbsp;R. Cardinale ,&nbsp;A. Tolosa-Delgado ,&nbsp;R. Forty ,&nbsp;S. Malde ,&nbsp;M. Tat ,&nbsp;G. Wilkinson","doi":"10.1016/j.nima.2026.171327","DOIUrl":"10.1016/j.nima.2026.171327","url":null,"abstract":"<div><div>Particle Identification (PID) is a key requirement for future Higgs factories such as FCC-ee, in particular for heavy-flavour physics and jet flavour tagging. The ARC (Array of RICH Cells) detector is a novel compact and modular RICH (Ring Imaging Cherenkov) concept designed to provide charged hadron separation over a momentum range <span><math><mrow><mn>1</mn><mtext>–</mtext><mn>40</mn><mtext>GeV/c</mtext></mrow></math></span>. ARC combines gas and aerogel radiators within independent cells, each equipped with spherical mirrors and SiPM-based photodetectors. A detailed simulation and reconstruction framework has been developed, including inverse ray-tracing algorithms for Cherenkov angle reconstruction. Simulation studies demonstrate excellent photon yield and <span><math><mrow><mi>π</mi><mo>/</mo><mi>K</mi></mrow></math></span> separation performance across the target momentum range.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171327"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190960","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":"From a network to a networking: The evolution of the Latin American Giant Observatory","authors":"C. Sarmiento-Cano ,&nbsp;H. Asorey ,&nbsp;M. Audelo ,&nbsp;A.C. Fauth ,&nbsp;D. Cazar-Ramírez ,&nbsp;A.M. Gulisano ,&nbsp;J.A. López-Rodríguez ,&nbsp;R. Mayo-García ,&nbsp;J. Molina ,&nbsp;L. Otiniano ,&nbsp;J.R. Sacahui ,&nbsp;G. Secchia-González ,&nbsp;I. Sidelnik ,&nbsp;L.A. Núñez","doi":"10.1016/j.nima.2026.171328","DOIUrl":"10.1016/j.nima.2026.171328","url":null,"abstract":"<div><div>The Latin American Giant Observatory (LAGO) is a collaborative initiative that deploys a network of low-cost, autonomous Water Cherenkov Detectors across Latin America and Spain. Initially focused on detecting gamma-ray bursts at high-altitude sites, LAGO has evolved into a multidisciplinary forum for astroparticle physics, space weather studies, and environmental monitoring. Its detectors operate from sea level to over 4300 meters above sea level (m a.s.l.) in diverse geomagnetic and atmospheric conditions. The ARTI-MEIGA simulation framework is a key development that models the entire cosmic-ray interaction chain, enabling site-specific simulations to be integrated into FAIR-compliant workflows. LAGO also plays a significant role in regional education and training through partnerships with ERASMUS+ projects, positioning itself as a hub for research capacity building. New contributions emerging from the collaboration include volcano muography, neutron hydrometry for precision agriculture, and space weather monitoring in the South Atlantic Magnetic Anomaly. LAGO demonstrates how Cherenkov-based detection and open science can drive scientific discovery and practical innovation.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171328"},"PeriodicalIF":1.4,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190964","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}