Journal of Instrumentation最新文献_第3页

The mass production of silicon sensors for the Phase-2 CMS Outer Tracker 为第二阶段 CMS 外部跟踪器量产硅传感器

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12006

Konstantinos Damanakis

引用次数: 0

Optimization of a YAP(Ce) prompt X-ray camera for imaging with spot scanning proton beams at clinical dose levels 优化 YAP(Ce)瞬时 X 射线照相机，以便在临床剂量水平下使用点扫描质子束成像

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/T12005

S. Yamamoto, T. Yamashita, Y. Kobashi, T. Yabe, T. Akagi, M. Yamaguchi, Naoki Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka

{"title":"Optimization of a YAP(Ce) prompt X-ray camera for imaging with spot scanning proton beams at clinical dose levels","authors":"S. Yamamoto, T. Yamashita, Y. Kobashi, T. Yabe, T. Akagi, M. Yamaguchi, Naoki Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka","doi":"10.1088/1748-0221/18/12/T12005","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/T12005","url":null,"abstract":"Prompt secondary electron bremsstrahlung X-ray (prompt X-ray) imaging using a low-energy X-ray camera is a promising method for observing the beam shape from outside a subject. However, it has sometimes been necessary to conduct such imaging at a higher dose than the clinical level to acquire images with acceptable quality. To solve this problem, we optimized a prompt X-ray imaging system to use for spot scanning proton therapy system. The new camera had more than one order higher sensitivity to image several types of beams, including those at the clinical dose level. The optimized prompt X-ray imaging system uses a 4 mm diameter pinhole collimator to increase sensitivity, and it is combined with a larger YAP(Ce) scintillator to increase the magnification ratio and thus improve spatial resolution. We used a list-mode data-acquisition system with high count rate capability. Prompt X-ray images were acquired by irradiating a water phantom with proton beams from the spot scanning proton therapy system. Measurements were taken for pencil beams, spread-out Bragg peak (SOBP) beams, and a beam utilized in actual clinical therapy. For all of the beams, we could measure scanning spot images within a spill and evaluate the ranges for the accumulated images at the clinical dose level. From the list-mode data, we measured the temporarily altered positions of the scanning beams as well as the accumulations of the prompt X-ray images. The optimized prompt X-ray imaging system could improve sensitivity while maintaining better spatial resolution. The new system realized prompt X-ray imaging at the clinical dose level and holds promise for future clinical imaging of prompt X-rays.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"101 28","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138609089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impedance of in-air undulator vacuum chamber in HEPS 高分辨率辐射计中空气起伏真空室的阻抗

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/P12003

Jintao Li, Na Wang, Sen Yue, Saike Tian

引用次数: 0

Geant4 simulation study of low-Z material detection using muon tomography 利用μ介子层析成像技术探测低Z物质的Geant4模拟研究

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12014

A. Georgadze, V. Kudryavtsev

{"title":"Geant4 simulation study of low-Z material detection using muon tomography","authors":"A. Georgadze, V. Kudryavtsev","doi":"10.1088/1748-0221/18/12/C12014","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/C12014","url":null,"abstract":"Traditional X-ray scanning systems for cargo use ionising radiation which can be harmful to operators and the environment and requires shielding. Fully passive muon tomography is a promising alternative or a complementary approach to X-ray scanners. Muon tomography is a non-invasive technique that uses naturally occurring cosmic-ray muons and their scattering in various materials to create images of cargo in trucks or containers without applying ionising radiation. Muons are high-energy particles that are produced when primary cosmic rays collide with the Earth's atmosphere. These muons can penetrate through thick materials, such as concrete or metal, and are therefore useful for detecting hidden objects, including contraband. Muon tomography is expected to be used for detection of a wide range of materials, including metals, plastics, and organic materials like drugs or cigarettes, as well as weapons and explosives. In this work we have used the GEANT4 toolkit to simulate the performance of muon tomography in identifying the contraband hidden inside the legal cargo. We have used the Point of Closest Approach (PoCA) reconstruction algorithm to reconstruct the three-dimensional image of a loaded truck.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"350 ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139017024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alpha-ray imaging with alkali copper halide scintillator 利用碱卤化铜闪烁体进行阿尔法射线成像

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12009

Y. Urano, S. Kurosawa, A. Yamaji, A. Yoshikawa, Y. Wu

{"title":"Alpha-ray imaging with alkali copper halide scintillator","authors":"Y. Urano, S. Kurosawa, A. Yamaji, A. Yoshikawa, Y. Wu","doi":"10.1088/1748-0221/18/12/C12009","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/C12009","url":null,"abstract":"Internal exposure for decommissioning workers at the Fukushima Daiichi Nuclear Power Plant must be prevented, and we have developed a monitoring system for alpha-ray emitting dust (alpha dust). When the dust size is less than several tens of micrometers, a dust protection mask does not work effectively to prevent internal exposure. Since no devices have been operated to observe alpha-dust images in real-time up to now, we have developed an alpha-ray imaging detector consisting of a scintillation material and imaging detector. Scintillators are required to have high light output and chemical stability. Cs3Cu2I5 (CCI) scintillator was found to be one of the candidates, and an imaging test was operated with this material. The CCI crystal was grown by the Bridgman-Stockberger method, and a scintillation sheet for alpha-ray imaging was prepared by CCI microcrystals with a thickness of approximately 70 μm on a 200-μm thickness transparent polyethylene terephthalate film as a first imaging test. The sheet was irradiated with 5.5-MeV alpha rays from an 241Am source, and scintillation photons were detected with a CMOS camera through an optical lens. We succeeded in visualizing alpha rays, and a position resolution of our system achieved approximately 16.2 ± 2.6 μm (10–90 %). This resolution was similar value to other imaging devices with Ag:ZnS powder scintillator, and a CCI single crystal sheet was expected to reach better resolution.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"60 ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139017622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interferometry analysis with fringe normalization and matrix Abel inversion for plasma diagnostics 利用条纹归一化和矩阵阿贝尔反演进行干涉测量分析，用于等离子体诊断

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12016

S. Lee, I. Nam, M. Cho, D. Jang, S. Kwon, H. Suk, M. Kim

{"title":"Interferometry analysis with fringe normalization and matrix Abel inversion for plasma diagnostics","authors":"S. Lee, I. Nam, M. Cho, D. Jang, S. Kwon, H. Suk, M. Kim","doi":"10.1088/1748-0221/18/12/C12016","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/C12016","url":null,"abstract":"In plasma diagnostics using interferometry, the phase shift caused by the plasma in the fringes is extracted to determine the plasma density. The common method to extract the phase shift from the fringes is the fast-Fourier-Transform (FFT), but this technique encounters challenges when dealing with insufficient fringe numbers, spatially varying fringe frequencies, or extremely sharp phase changes. These challenges result in errors and hinder the acquisition of precise phase measurements. To tackle this issue, we introduced the fringe normalization (FN) method. The simulations demonstrated that the FN method extracts accurate phase information, surpassing the capabilities of the FFT method. As a result, this advancement enables more precise plasma diagnostics by mitigating errors that arise during the phase data processing. Furthermore, we improved the code for the inverse matrix Abel inversion to convert phase information into density. The simulation employing this code showed that the developed code provides more accurate values in the analysis of plasmas with a sharp density profile, assisting in electron beam manipulation in laser-plasma acceleration.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"24 ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139021230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization results of the first small pixel high rate (SPHIRD) pixel detector prototypes 首批小像素高速率（SPHIRD）像素探测器原型的鉴定结果

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12013

D'ebora Magalhaes, Pablo Fajardo, P. Grybos, R. Kleczek, P. Kmon, P. Otfinowski, M. Ruat

{"title":"Characterization results of the first small pixel high rate (SPHIRD) pixel detector prototypes","authors":"D'ebora Magalhaes, Pablo Fajardo, P. Grybos, R. Kleczek, P. Kmon, P. Otfinowski, M. Ruat","doi":"10.1088/1748-0221/18/12/C12013","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/C12013","url":null,"abstract":"This work presents a summary of the experimental results and the performance obtained from a first set of p-type silicon SPHIRD prototypes. The SPHIRD project (Small Pixel High Rate photon counting Detector) targets a new generation of X-ray photon counting hybrid pixel detectors for synchrotron radiation applications, with small pixels and operating between 10 and 30 keV. The readout ASIC is designed to explore techniques that boost the count rate capabilities of the detector and methods to manage, or in some cases exploit, the effects of charge sharing that are unavoidable with small pixels in this type of detector. The achievement of high photon rates relies on the implementation of a fast charge-sensitive amplifier in the pixel in combination with pile-up compensation techniques, which have been compared experimentally. The obtained results show and quantify their effectiveness in increasing the count-rate handled by the detector. The readout chip also includes dedicated circuitry for the relocation of photon hits, a functionality necessary to reduce the photon losses that are observed in photon counting detectors due to charge sharing when the discrimination threshold is set to 50% of the photon energy. The circuitry is however not limited to full pixel relocation: it also implements resources to reassign X-ray hits within regions smaller than the physical pixel. All these operation modes were experimentally evaluated with a pencil beam and with full field images.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"38 4","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138992854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of linear power operational amplifier power supply with pre-regulated voltage controller for TPS correction magnets 为 TPS 校正磁体开发带预调节电压控制器的线性功率运算放大器电源

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/T12009

Baosheng Wang, Kuobin Liu, Yongseng Wong

{"title":"Development of linear power operational amplifier power supply with pre-regulated voltage controller for TPS correction magnets","authors":"Baosheng Wang, Kuobin Liu, Yongseng Wong","doi":"10.1088/1748-0221/18/12/T12009","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/T12009","url":null,"abstract":"The Taiwan Photon Source (TPS) is a renowned 3 GeV synchrotron accelerator light source. Over the past decade of successful operation, it has demonstrated outstanding performance, notably in average beam trip downtime, meeting international standards. A continuous regimen of scheduled equipment upgrades has been maintained across all subsystems to ensure ongoing improvement and the preservation of an optimal research facility environment. The central focus of this study revolves around the design and realization of a TPS correction magnet power supply employing Linear Power Operational Amplifiers (LPOA) in conjunction with a pre-regulated voltage controller. The power source predominantly features APEX Corporation's PA05 LPOA, characterized by bipolar output, high internal power dissipation, and wide bandwidth. Additionally, a DC Current Transducer (DCCT) was employed as the current feedback element, integrated with the pre-regulator voltage controller to form a closed-loop current modulation circuit, providing the variable voltage required by the LPOA. Through these measures, we have successfully developed an LPOA power supply unit equipped with a pre-regulated voltage controller for TPS correction magnets. The prototype device boasts a maximum output current of ±10 A, operating at 24 V. Validation through control loop design has led to rapid and stable output current performance. The output current ripple is maintained within 100 μA, with a rise time of 75 μs during step response. During frequency response testing utilizing a 0.1 V disturbance signal, the gain margin resides within -3 dB at an 11.2 kHz bandwidth and the phase margin within -45∘ at a 5.1 kHz range. Long-term output current stability is sustained within ten ppm. Finally, a hardware prototype circuit has been constructed in the power supply laboratory, featuring a ±24 V input voltage and ±10 A output current, achieving a maximum rated power of 240 W.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"104 ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139015733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement of PMT charge nonlinearity using the continuous light attenuation method 利用连续光衰减法测量 PMT 电荷非线性度

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/T12010

Xiaoyu Wang, Shuwang Cui

引用次数: 0

X-ray single photon detection with XPOL-III 利用 XPOL-III 进行 X 射线单光子探测

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12015

C. Sgro’, L. Baldini, R. Bellazzini, A. Brez, M. Ceccanti, L. Latronico, L. Lucchesi, A. Manfreda, M. Minuti, L. Orsini, M. Pesce-Rollins, M. Pinchera, A. Profeti, G. Spandre

{"title":"X-ray single photon detection with XPOL-III","authors":"C. Sgro’, L. Baldini, R. Bellazzini, A. Brez, M. Ceccanti, L. Latronico, L. Lucchesi, A. Manfreda, M. Minuti, L. Orsini, M. Pesce-Rollins, M. Pinchera, A. Profeti, G. Spandre","doi":"10.1088/1748-0221/18/12/C12015","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/C12015","url":null,"abstract":"XPOL-III is a newly developed CMOS ASIC simultaneously working for collecting charge and processing signals inside Gas Pixel Detectors (GPD). Starting from the architecture of the XPOL ASIC and its successful operation in the IXPE space mission, we implemented specific design changes aiming at increasing the rate capability and the uniformity of response. XPOL-III includes more than 100k pixels at 50 μm pitch in a total active area of about 15 × 15 mm2. Each pixel acts as a charge-collecting anode and is connected to its charge-sensitive amplifier, followed by a shaping circuit and a sample-and-hold system. The chip, like its predecessor, provides self-triggering capability, with automatic localization of the region of interest (ROI) to be readout for each single photon. A new programmable definition of the margin pixels around the ROI was implemented to reduce readout time. Other improvements include the sensitivity of the trigger electronics and an increase in the maximum speed for the serial event readout. In this work we describe the design of this new ASIC and the results of its preliminary tests, in particular in the context of the gas detector application, in which imaging the photoelectron track emitted by single X-ray absorption allows us to measure beam polarization together with timing, imaging, and spectroscopy.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"407 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139021611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0