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

{"title":"HRPPD photosensors for RICH detectors with a high resolution timing capability","authors":"A.V. Lyashenko ,&nbsp;J. Agarwala ,&nbsp;A. Asaturyan ,&nbsp;M. Aviles ,&nbsp;B. Azmoun ,&nbsp;C. Chatterjee ,&nbsp;S.M. Clarke ,&nbsp;S. Cwik ,&nbsp;C.J. Hamel ,&nbsp;Y. Jin ,&nbsp;A. Kiselev ,&nbsp;M.J. Minot ,&nbsp;B. Page ,&nbsp;M.A. Popecki ,&nbsp;M. Purschke ,&nbsp;S. Stoll ,&nbsp;C. Woody","doi":"10.1016/j.nima.2025.170964","DOIUrl":"10.1016/j.nima.2025.170964","url":null,"abstract":"<div><div>Recently, a new version of DC-coupled High Rate Picosecond Photodetectors (DC-HRPPDs) substantially re-designed for use at the Electron-Ion Collider (EIC) has been developed. A first batch of seven “EIC HRPPDs” was manufactured in early 2024. These HRPPDs are DC-coupled photosensors based on Micro-Channel Plates (MCPs) that have an active area of 104 mm by 104 mm, 32 × 32 direct readout pixel array at a pitch of 3.25 mm, peak quantum efficiency in excess of 30%, exceptionally low dark count rates and timing resolution of 15–20 ps for a single photon detection. As such, these photosensors are very well suited for Ring Imaging CHerenkov (RICH) detectors that can also provide high resolution timing capability, especially in a configuration where a detected charged particle passes through the sensor window, which produces a localized flash containing a few dozens of Cherenkov photons in it.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170964"},"PeriodicalIF":1.4,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913212","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":"Annihilation vertex reconstruction algorithm with single-layer Timepix4 detectors","authors":"V. Kraxberger ,&nbsp;A. Gligorova ,&nbsp;E. Widmann","doi":"10.1016/j.nima.2025.170958","DOIUrl":"10.1016/j.nima.2025.170958","url":null,"abstract":"<div><div>A study of antiproton–nucleus annihilations at rest on a variety of thin solid targets using slow extracted antiprotons is being prepared. To detect the charged annihilation products, the experiment will employ seven Timepix4 ASICs coupled to 500<!--> <!-->µm thick silicon sensors. These will be arranged in a cuboid geometry that covers the majority of the full solid angle around the target, enabling precise tracking of outgoing particles using only one layer of detectors. With these novel chips, the annihilation will be studied by measuring the total multiplicity, energy, and angular distribution of various prongs produced in a number of targets.</div><div>A 3D reconstruction algorithm for determining the annihilation vertex from particle tracks in the single-plane detectors has been developed using Monte Carlo simulations. This allows for event-by-event reconstruction, making it possible to distinguish antiproton annihilations on the target from those occurring elsewhere. The measurements will also enable a study of possible final state interactions triggered by the primary annihilation mesons, their evolution with the nuclear mass and their branching ratios.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170958"},"PeriodicalIF":1.4,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896239","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 and shower shape studies with EPICAL-2","authors":"J. Keul ,&nbsp;J. Alme ,&nbsp;R. Barthel ,&nbsp;V. Borshchov ,&nbsp;R. Bosley ,&nbsp;A. van den Brink ,&nbsp;H. Büsching ,&nbsp;O.S. Groettvik ,&nbsp;T. Peitzmann ,&nbsp;F. Pliquett ,&nbsp;M. Protsenko ,&nbsp;K. Røed ,&nbsp;T.S. Rogoschinski ,&nbsp;D. Röhrich ,&nbsp;M.J. Rossewij ,&nbsp;J. Schöngarth ,&nbsp;E.H. Solheim ,&nbsp;N.B. Sundstrom ,&nbsp;I. Tymchuk ,&nbsp;K. Ullaland ,&nbsp;H. Yokoyama","doi":"10.1016/j.nima.2025.170954","DOIUrl":"10.1016/j.nima.2025.170954","url":null,"abstract":"<div><div>A prototype of a novel digital electromagnetic calorimeter, EPICAL-2, has been developed. The R&amp;D is performed in the context of the ALICE-FoCal and is closely related to studies of imaging in proton CT. Digital calorimetry also proves promising for future collider projects such as EIC, ILC, CLIC, or FCC. Based on a proof-of-principle with a first prototype, EPICAL-2 has been constructed as an advanced second prototype. EPICAL-2 consists of 24 layers with alternating tungsten absorbers and ALPIDE MAPS. The design features an active area of approximately <span><math><mrow><mn>27</mn><mspace></mspace><mi>x</mi><mspace></mspace><mn>30</mn><mspace></mspace><msup><mrow><mi>mm</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> and a depth of 20 radiation lengths, totaling over 25 million pixels. EPICAL-2 test-beam measurements were performed at DESY in February 2020 and CERN-SPS in September 2021. Simulations of the EPICAL-2 detector have been carried out with the Allpix<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span> framework. Performance studies with EPICAL-2 show promising energy response and resolution. Beyond its main calorimetric abilities, EPICAL-2 allows for detailed shower shape studies. Measurements of the longitudinal and lateral shower shape and the Molière radius have been carried out, indicating strong shower separation power of the EPICAL-2’s design.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170954"},"PeriodicalIF":1.4,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917028","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":"Polycapillary optics based enhancement of X-ray imaging in phase contrast tomography","authors":"Alessandra Maia Marques Martinez Perez ,&nbsp;Dariush Hampai ,&nbsp;Federico Galdenzi ,&nbsp;Alfredo di Filippo ,&nbsp;Emilio Capitolo ,&nbsp;Sultan B. Dabagov","doi":"10.1016/j.nima.2025.170980","DOIUrl":"10.1016/j.nima.2025.170980","url":null,"abstract":"<div><div>As known X-ray imaging is typically based on the use of attenuation features of radiation in media. For low attenuating materials and samples of similar absorption characteristics, X-ray phase contrast imaging (XPCI), based on the phase shift experienced by X-rays when traversing matter, can be utilized. XPCI, however, is allowed for coherent X-ray sources (at least, partial coherence is needed), the most available of them is known as synchrotron radiation. Another possible solution is postulated by using polychromatic X-ray microfocus sources. In this study, propagation-based phase contrast imaging and tomography were performed using a laboratory X-ray system, the Computed Tomography Station (CTS), installed at XLab-Frascati. This desktop setup is composed of a microfocus source, a CCD detector and a fine rotation stage. Moreover, imaging experiments employing polycapillary optics (polyCO) were performed. Even though phase analysis has already been done for other types of optics, these represent pioneering results comparing phase contrast tomography with and without polyCO. Preliminary results obtained have proved the high potentiality of polyCO systems in the enhancement of the image quality at phase-contrast tomographic studies.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170980"},"PeriodicalIF":1.4,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896240","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":"Design of high-strength, radiopure copper–chromium alloys for rare-event searches assisted by computational thermodynamics","authors":"D. Spathara","doi":"10.1016/j.nima.2025.170970","DOIUrl":"10.1016/j.nima.2025.170970","url":null,"abstract":"<div><div>Direct Dark Matter detection and studies on the nature of neutrinos demand detector systems with extremely low background levels, including from radioactivity. Additive-free, electroformed copper, in addition to a set of advantages, exhibits exceptional radiopurity, making it the material of choice for mechanical and structural components for rare-event searches experiments. To satisfy the increasing demand for materials with superior mechanical strength, the development of copper–chromium alloys is pursued. Early investigations explored the synthesis of these alloys by electrodeposition and thermal processing. A materials-design approach is proposed to optimize the fabrication and thermal processing stages of manufacturing. It is assisted by materials modeling tools based on the thermodynamic and kinetic properties of alloy compositions, which enables faster development of novel materials by predicting properties and materials performance. This approach is demonstrated by comparing simulations with previously reported experimental investigations and proposing improved thermal processing.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170970"},"PeriodicalIF":1.4,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917027","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":"Position reconstruction for HERD Plastic Scintillator Detector using KAN neural network","authors":"Longkun Yu ,&nbsp;Chenxing Zhang ,&nbsp;Dongya Guo ,&nbsp;Yaqing Liu ,&nbsp;Wenxi Peng ,&nbsp;Dali Zhang ,&nbsp;Ke Gong ,&nbsp;Zhigang Wang ,&nbsp;Bing Lu ,&nbsp;Rui Qiao ,&nbsp;Ming Xu ,&nbsp;Ruijie Wang ,&nbsp;Tianwei Bao ,&nbsp;Yongwei Dong ,&nbsp;Jing Wang ,&nbsp;Shuai Yang ,&nbsp;Yongye Li ,&nbsp;Giovanni Ambrosi ,&nbsp;Mattia Barbanera ,&nbsp;Claudio Brugnoni ,&nbsp;Gianluigi Silvestre","doi":"10.1016/j.nima.2025.170922","DOIUrl":"10.1016/j.nima.2025.170922","url":null,"abstract":"<div><div>The High Energy cosmic-Radiation Detection (HERD) facility is a dedicated high energy astronomy and particle physics experiment that will operate on the Chinese space station. Its primary objective is to detect high-energy cosmic rays (GeV <span><math><mo>∼</mo></math></span> PeV) and gamma-rays (<span><math><mrow><mo>&gt;</mo><mtext>500</mtext><mspace></mspace><mtext>MeV</mtext></mrow></math></span>). As one of the sub-detectors of HERD, the Plastic Scintillator Detector (PSD) is designed to identify charged particles for gamma-ray detection and is also utilized to measure the charge of cosmic rays. In 2023, our first prototype of PSD was developed and tested at CERN PS and SPS beam. This paper investigates the positional response of the PSD using two reconstruction algorithms: the traditional dual-ended ratio and a deep learning approach based on KAN neural network. We find that the position resolution reconstructed by the deep learning method ranges approximately from 2.1 <span><math><mi>mm</mi></math></span> to 10.6 <span><math><mi>mm</mi></math></span> (<span><math><mrow><mn>1</mn><mi>σ</mi></mrow></math></span>), which is significantly superior to that of the traditional method.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170922"},"PeriodicalIF":1.4,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896326","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":"Development of new large area Micromegas detector and its ToRA ASIC-based readout electronics for AMBER experiment at CERN","authors":"Chiara Alice ,&nbsp;Maxim Alexeev ,&nbsp;Antonio Amoroso ,&nbsp;Michela Chiosso ,&nbsp;Davide Giordano ,&nbsp;Oleg Denisov ,&nbsp;Daniele Panzieri ,&nbsp;Giovanni Mazza ,&nbsp;Rui de Olivera","doi":"10.1016/j.nima.2025.170957","DOIUrl":"10.1016/j.nima.2025.170957","url":null,"abstract":"<div><div>As part of the extensive upgrade program of the Apparatus for Mesons and Baryon Experimental Research (AMBER, NA66) spectrometer a resistive bulk MICRO-MEsh-GAseous Structure (micromegas) detectors with an active area of <span><math><mrow><mn>1</mn><mi>x</mi><mn>0</mn><mo>.</mo><mn>5</mn><mspace></mspace><msup><mrow><mi>m</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> has been selected for the replacement of some Multi-Wires Proportional Chambers. This detector will be made out of three independent modules. Each micromegas detector has two readout planes in a face-to-face configuration and a common cathode providing an XUV measurement. For the lateral modules a uniform <span><math><mrow><mn>10</mn><mspace></mspace><mi>Ω</mi><mo>/</mo><msup><mrow><mi>cm</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> Diamond-Like Carbon (DLC) layer was chosen. The production of the first detector was completed in October 2024 and the test campaign is underway. The first module under test is presently the largest resistive bulk MM in operation. Leveraging results gained from prior tests of smaller MM prototype a new 64-channel mixed-signal front-end Application Specific Integrated Circuit (ASIC) for time and energy measurements is under development at INFN Sezione di Torino. The ongoing work on the detector and on the front-end electronics based on the new ToRA (Torino Readout for AMBER) ASIC, is presented.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170957"},"PeriodicalIF":1.4,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932934","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":"Development and benchmarking of JANGOFETT: A Novel Geant4-Operated Fission Event Tracking Tool","authors":"Liam Walker ,&nbsp;Jack Shire ,&nbsp;Jacob Jaffe,&nbsp;Payton Sprando,&nbsp;Jack Olinger,&nbsp;Alexander Chemey","doi":"10.1016/j.nima.2025.170948","DOIUrl":"10.1016/j.nima.2025.170948","url":null,"abstract":"<div><div>Experiments measuring fission observables encounter false coincidences arising from timing overlap of separate fission product decays. Simulations of both fission observables and particles in detector systems exist, but have not yet been combined to produce accurate event-by-event outputs in a time-dependent manner. Geant4 is a powerful simulation tool for nuclear physics studies, but it does not typically handle multiple initial particles in a single simulation instance, nor does it feature high fidelity fission sampling. <strong><u>J</u>ANGOFETT: <u>A</u> <u>N</u>ovel <u>G</u>eant4-<u>O</u>perated <u>F</u>ission <u>E</u>vent <u>T</u>racking <u>T</u>ool</strong> has been developed to address this challenge. The tool utilizes simulated fission data from an external program in conjunction with Geant4, which has been modified to produce a single timeline of events over an entire simulated experiment. The physical accuracy of the simulated overlapping energy depositions within detectors has been verified via simulation of fission products from the spontaneous fission of ²⁵²Cf.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170948"},"PeriodicalIF":1.4,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896327","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":"Development and characterization of hybrid MCP-PMT with embedded Timepix4 ASIC used as pixelated anode","authors":"R. Bolzonella ,&nbsp;J. Alozy ,&nbsp;R. Ballabriga ,&nbsp;N.V. Biesuz ,&nbsp;M. Campbell ,&nbsp;V. Cavallini ,&nbsp;A. Cotta Ramusino ,&nbsp;M. Fiorini ,&nbsp;E. Franzoso ,&nbsp;M. Guarise ,&nbsp;X. Llopart Cudie ,&nbsp;G. Romolini ,&nbsp;A. Saputi","doi":"10.1016/j.nima.2025.170965","DOIUrl":"10.1016/j.nima.2025.170965","url":null,"abstract":"<div><div>We present a novel single-photon detector based on a vacuum tube incorporating a photocathode, a microchannel plate (MCP), and a Timepix4 CMOS ASIC functioning as a pixelated anode. Designed to handle photon rates up to 1 billion per second across a <span><math><mrow><mn>7</mn><mspace></mspace><mi>c</mi><msup><mrow><mi>m</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span> active area, the detector achieves outstanding spatial and temporal resolutions of <span><math><mrow><mn>5</mn><mo>−</mo><mn>10</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> and below <span><math><mrow><mn>50</mn><mspace></mspace><mi>p</mi><mi>s</mi></mrow></math></span> r.m.s., respectively.</div><div>The Timepix4 ASIC comprises approximately 230,000 pixels, each integrating analog and digital front-end electronics. This enables data-driven acquisition and supports data transmission rates up to 160 Gb/s. External FPGA-based electronics manage both configuration and readout.</div><div>In order to test the timing performance of the Timepix4 ASIC we performed preliminary characterization of an assembly bonded to a <span><math><mrow><mn>100</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> thick n-on-p silicon sensor using a pulsed infrared laser, which demonstrated a per-pixel timing resolution of <span><math><mrow><mn>110</mn><mspace></mspace><mi>p</mi><mi>s</mi></mrow></math></span>, with cluster-based averaging methods improving to below <span><math><mrow><mn>50</mn><mspace></mspace><mi>p</mi><mi>s</mi></mrow></math></span>.</div><div>Six prototype detectors incorporating different MCP stack configurations and end-spoiling depths were produced by Hamamatsu Photonics. We report on their characterization, including dark count rates, gain, and spatial and timing resolutions, assessed both in laboratory conditions and during a test-beam campaign at CERN’s SPS facility.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170965"},"PeriodicalIF":1.4,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896298","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":"Development and performance analysis of 1 kW, 2450 MHz solid state pulsed RF amplifier with electron cyclotron resonance plasma source","authors":"Manish Pathak ,&nbsp;Praveen Mohania ,&nbsp;Ashish Mahawar ,&nbsp;S.K. Jain ,&nbsp;Raj Kumar Namdeo ,&nbsp;Rekhya Naika ,&nbsp;Akhilesh Jain ,&nbsp;D.V. Ghodke ,&nbsp;Mahendra Lad ,&nbsp;Vijendra Prasad ,&nbsp;Purushottam Shrivastava","doi":"10.1016/j.nima.2025.170974","DOIUrl":"10.1016/j.nima.2025.170974","url":null,"abstract":"<div><div>Raja Ramanna Center for Advanced Technology (RRCAT) has developed a CW Electron Cyclotron Resonance (ECR) plasma source at 2450 MHz to extract the ion beam current up to 35 keV beam energy. To enable the ion source operation in pulse mode, a solid-state pulsed RF power amplifier was designed, constructed, and integrated with this ion source. This RF power source delivers peak RF power of up to 1 kW with a variable pulse width of 1 ms–5 ms and duty factor of up to 10 %. For operational convenience, the RF amplifier was equipped with an integrated Arduino microcontroller-based pulse modulator and a pulse power metering system. The amplifier output is coupled to the ECR source via a waveguide isolator. A triple stub tuner was used to minimize the reflected RF power, in this RF chain. A 10 mA stable pulsed hydrogen ion beam current (2 ms pulse width at 2 Hz repetition rate) was extracted at 35 keV beam energy at an optimized value of hydrogen gas flow rate of 0.5 SCCM and pulsed RF power of 750 W. This paper describes the design and test details of 1 kW, pulsed RF supply, and its performance analysis with the ECR plasma source.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1082 ","pages":"Article 170974"},"PeriodicalIF":1.4,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896297","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}