Journal of Instrumentation最新文献_第5页

Cryogenic charge readout electronics for the ProtoDUNE-II program and DUNE 用于 ProtoDUNE-II 计划和 DUNE 的低温电荷读出电子装置

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12008

Roger Huang

引用次数: 0

A high-resolution asymmetric von Hamos spectrometer for low-energy X-ray spectroscopy at the CRYRING@ESR electron cooler 在CRYRING@ESR电子冷却器上用于低能x射线光谱的高分辨率非对称冯·哈莫斯光谱仪

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11002

P. Jagodziński, D. Banaś, M. Pajek, A. Kubala-Kukuś, Ł. Jabłoński, I. Stabrawa, K. Szary, D. Sobota, A. Warczak, A. Gumberidze, H.F. Beyer, M. Lestinsky, G. Weber, Th. Stöhlker, M. Trassinelli

{"title":"A high-resolution asymmetric von Hamos spectrometer for low-energy X-ray spectroscopy at the CRYRING@ESR electron cooler","authors":"P. Jagodziński, D. Banaś, M. Pajek, A. Kubala-Kukuś, Ł. Jabłoński, I. Stabrawa, K. Szary, D. Sobota, A. Warczak, A. Gumberidze, H.F. Beyer, M. Lestinsky, G. Weber, Th. Stöhlker, M. Trassinelli","doi":"10.1088/1748-0221/18/11/p11002","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/p11002","url":null,"abstract":"Abstract We present research program and project for high-resolution wavelength-dispersive spectrometer dedicated to low-energy X-ray spectroscopy at the electron cooler of the CRYRING@ESR storage ring, which is a part of the international Facility for Antiproton and Ion Research (FAIR) currently being built in Darmstadt. Due to the unique shape of the electorn-ion recombination X-ray source, resulting from the overlapping of the electron and ion beams in the electron cooler, the spectrometer can work in the specific asymmetric von Hamos (AvH) geometry. In order to completely eliminate the influence of Doppler effect on the measured X-ray energies, two asymmetric von Hamos spectrometers will be installed next to the dipole magnets on both sides of the electron cooler to detect blue/red (0°/180°) shifted X-rays, e.g. emitted in the radiative recombination (RR) process. The X-ray-tracing Monte-Carlo simulations show that the proposed AvH spectrometer will allow to determine with sub-meV precision, the low-energy X-rays (5–10 keV) emitted from stored bare or few-electron heavy ions interacting with cooling electrons. This experimental precision will enable accurate studies of the quantum electrodynamics (QED) effects in mid-Z H- and He-like ions.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"35 3-4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135510024","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

Calibration procedures and data correction of ePix100 detectors at the European XFEL ePix100探测器在欧洲自由电子激光器的校准程序和数据校正

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/c11008

N. Duarte, K. Ahmed, M. Cascella, S. Hauf, T. Preston, R. Shayduk, M. Turcato, M. Ramilli

{"title":"Calibration procedures and data correction of ePix100 detectors at the European XFEL","authors":"N. Duarte, K. Ahmed, M. Cascella, S. Hauf, T. Preston, R. Shayduk, M. Turcato, M. Ramilli","doi":"10.1088/1748-0221/18/11/c11008","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/c11008","url":null,"abstract":"Abstract The European XFEL is a research facility that delivers extremely bright and short coherent X-ray pulses of tunable energy at MHz repetition rate, providing unprecedented capabilities to conduct scientific research across multiple domains. Among the suite of deployed detectors, several ePix100 modules, belonging to the family of ePix detectors developed at SLAC, are used. These charge-integrating hybrid pixel detectors offer single-photon resolution for energies above 2 keV and a dynamic range of 100 photons at 8 keV. Their low noise, small pixel size, compact dimensions, maneuverability and vacuum compatibility make them an attractive choice for some of the hard X-ray instruments at the European XFEL for imaging, spectroscopy, and scattering experiments. The European XFEL is committed to providing users with completely corrected detector data. To achieve this goal, periodic calibration procedures are conducted to generate calibration constants that allow the conversion of raw detector output into physically meaningful information through a series of successive data correction steps. In this work, an overview of the ePix100 calibration procedures and correction algorithms will be provided, with a focus on particularly relevant processes for this detector, such as common mode noise and charge sharing correction.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135565874","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

A detector system for `absolute' measurements of fission cross sections at n_TOF in the energy range below 200 MeV 在200 MeV以下的能量范围内，用于n_TOF裂变截面“绝对”测量的探测器系统

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11011

Pirovano, E., Manna, A., Aberle, O., Amaducci, S., Colonna, N., Camprini, P. Console, Cosentino, L., Dietz, M., Ducasse, Q., Finocchiaro, P., Massimi, C., Mengoni, A., Nolte, R., Radeck, D., Tassan-Got, L., Terranova, N., Vannini, G.

{"title":"A detector system for `absolute' measurements of fission cross sections at n_TOF in the energy range below 200 MeV","authors":"Pirovano, E., Manna, A., Aberle, O., Amaducci, S., Colonna, N., Camprini, P. Console, Cosentino, L., Dietz, M., Ducasse, Q., Finocchiaro, P., Massimi, C., Mengoni, A., Nolte, R., Radeck, D., Tassan-Got, L., Terranova, N., Vannini, G.","doi":"10.1088/1748-0221/18/11/p11011","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/p11011","url":null,"abstract":"A new measurement of the $^{235}$U(n,f) cross section was performed at the neutron time-of-flight facility n_TOF at CERN. The experiment focused on neutron energies from 20 MeV to several hundred MeV, and was normalized to neutron scattering on hydrogen. This is a measurement first of its kind at this facility, in an energy range that was until now not often explored, so the detector development phase was crucial for its success. Two detectors are presented, a parallel plate fission chamber (PPFC) and a recoil proton telescope (RPT), both dedicated to perform measurements in the incident neutron energy range from 30 MeV to 200 MeV. The experiment was designed to minimize statistical uncertainties in the allocated run time. Several efforts were made to ensure that the systematic effects were understood and under control. The results show that the detectors are suited for measurements at n_TOF above 30 MeV, and indicate the path for possible future lines of development.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"233 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103080","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

Detective quantum efficiency of a double-layered detector for dual-energy x-ray imaging 双能x射线成像双层探测器的探测量子效率

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/c11005

Hubeom Shin, Seungjun Yoo, Seokwon Oh, Junho Lee, Ho Kyung Kim

{"title":"Detective quantum efficiency of a double-layered detector for dual-energy x-ray imaging","authors":"Hubeom Shin, Seungjun Yoo, Seokwon Oh, Junho Lee, Ho Kyung Kim","doi":"10.1088/1748-0221/18/11/c11005","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/c11005","url":null,"abstract":"Abstract A sandwich-like double-layered detector can perform dual-energy imaging (DEI) using a single x-ray exposure without object motion artifacts. The energy separation between measurements obtained from the front and rear-detector layers can be tuned by introducing an x-ray beam-attenuating material between them. However, the design of the interdetector filter significantly influences dose efficiency by altering the number of x-ray photons reaching the rear-detector layer within the sandwich detector. Since the sandwich detector typically incorporates phosphors of differing thicknesses for its two detector layers, it exhibits a unique spatial resolution characteristic in the reconstructed dual-energy (DE) images. To comprehensively assess detector performance in terms of design (filter) and operation (reconstruction), we established a framework that describes the dual-energy detective quantum efficiency (DE-DQE) using linear-systems theory. The developed DE-DQE model was validated through comparison with measurements. The agreement between the modulation-transfer functions was reasonable, and the correspondence between noise-power spectra was excellent. This proposed DE-DQE concept is universally applicable to any linearly operating DE system and holds a significant value in enhancing the performance of sandwich detectors or ensuring their optimal operation.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135565863","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 of a ²²⁰Rn source for low-energy electronic recoil calibration of the XENONnT detector 用于XENONnT探测器低能电子后坐力校准的220Rn源的特性

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11009

Florian Jörg, Shengchao Li, Jochen Schreiner, Hardy Simgen, Rafael F. Lang

引用次数: 0

Absolute value measurement of ion-scale turbulence by two-dimensional phase contrast imaging in Large Helical Device 大型螺旋装置中离子尺度湍流的二维相衬成像绝对值测量

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/c11009

T. Kinoshita, K. Tanaka, H. Sakai, R. Yanai, M. Nunami, C.A. Michael

{"title":"Absolute value measurement of ion-scale turbulence by two-dimensional phase contrast imaging in Large Helical Device","authors":"T. Kinoshita, K. Tanaka, H. Sakai, R. Yanai, M. Nunami, C.A. Michael","doi":"10.1088/1748-0221/18/11/c11009","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/c11009","url":null,"abstract":"Abstract Absolute value measurements of turbulence amplitude in magnetically confined high-temperature plasmas can effectively explain turbulence-driven transport characteristics and their role in plasma confinements. Two-dimensional phase contrast imaging (2D-PCI) is a technique to evaluate the space-time spectrum of ion-scale electron density fluctuation. However, absolute value measurement of turbulence amplitude has not been conducted owing to the nonlinearity of the detector. In this study, the absolute measurement method proposed in the previous study is applied to turbulence measurement results in the large helical device. As a result, the localized turbulence amplitude at n e = 1.5 × 10 19 m -3 is approximately 3.5 × 10 15 m -3 , which is 0.02% of the electron density. In addition, the evaluated poloidal wavenumber spectrum is almost consistent, within a certain error range, the spectrum being calculated using a nonlinear gyrokinetic simulation. This result is the first to the best of our knowledge to quantitatively evaluate turbulence amplitudes measured by 2D-PCI and compare with simulations.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"11 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135765427","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

Implementation of dual-energy material decomposition technique in stationary CT baggage scanner withπ-angle sparsity for enhancing threat detection 基于π角稀疏度的双能材料分解技术在固定式CT行李扫描仪中的实现，以增强威胁检测

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/c11003

Jiyong Shim, Youngjo Kim, Hyesun Yang, Hyosung Cho, Kwangyun Choi

{"title":"Implementation of dual-energy material decomposition technique in stationary CT baggage scanner withπ-angle sparsity for enhancing threat detection","authors":"Jiyong Shim, Youngjo Kim, Hyesun Yang, Hyosung Cho, Kwangyun Choi","doi":"10.1088/1748-0221/18/11/c11003","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/c11003","url":null,"abstract":"Abstract Two-dimensional X-ray inspection systems are widely used in aviation security applications; however, they have inherent limitations in recognizing the three-dimensional (3D) shapes of hidden objects. Therefore, there is a growing demand for the implementation of advanced 3D X-ray inspection systems at airports for more accurate detection of threats in luggage and personal belongings. In this study, we designed a new stationary computed tomography (CT) baggage scanner with π -angle sparsity (i.e., 20 pairs of X-ray sources and line detectors were placed within a scan angle of 180°) and compressed sensing (CS)-based reconstruction, and implemented a dual-energy material decomposition (DEMD) technique in the proposed system to separate soft and dense materials of an examined object to enhance threat detection. To validate the efficacy of the proposed approach (CS/180°/P20), we conducted a feasibility study using numerical simulation before its practical implementation. Polychromatic projections were emulated at X-ray tube voltages of 60 and 140 kV p , and DEMD was applied to the projections prior to CT reconstruction. Conventional and dual-energy CT images were reconstructed using both standard filtered-backprojection (FBP) and state-of-the-art CS-based algorithms to compare the image quality. According to our simulation results, the CS-reconstructed images were almost unaffected by the clearly evident streak artifacts on the FBP-reconstructed images because of the use of 20 extreme sparse-view projections, and the image quality of the dual-energy CT images obtained using the proposed CT configuration was similar to that obtained using the conventional CT configuration with 720 dense projections, indicating the efficacy of the proposed approach. Consequently, high-quality dual-energy CT images of soft and dense materials were successfully obtained using the proposed stationary CT configuration.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"10 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135565197","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

The response of an Al-¹⁰B₄C coupled neutron detector based on PIPS technology to Cf-252 基于PIPS技术的Al-10B4C耦合中子探测器对Cf-252的响应

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11005

C. Zhang, G. Wu, Z. Li, H. Li, Z. Lu, H. Zhang, X. Wang, R. Li, C. Chen, F. Liu, Y. Qiu, Y. Guo

{"title":"The response of an Al-<sup>10</sup>B<sub>4</sub>C coupled neutron detector based on PIPS technology to Cf-252","authors":"C. Zhang, G. Wu, Z. Li, H. Li, Z. Lu, H. Zhang, X. Wang, R. Li, C. Chen, F. Liu, Y. Qiu, Y. Guo","doi":"10.1088/1748-0221/18/11/p11005","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/p11005","url":null,"abstract":"Abstract After decades of discussions, it has been firmly established that detectors made of silicon-based semiconductor materials can be effectively used for neutron detection by simply coating them with suitable substances. The incident thermal neutrons interact with the coating neutron-sensitive materials such as 10 B and 6 LiF, resulting in the production of secondary charged particles which can be effectively detected in the sequencial silicon substrate. In this article, the detector system was designed with a coupled neutron detector structure which combined a silicon detector with a 10 B 4 C film in various forms. The 10 B 4 C layer was deposited on the substract with electron beam evaporation method. Two kinds of structrue were discussed: (1) one was the direct contact neutron detector by depositing 10 B 4 C directly onto the front surface of silicon-based detectors; (2) the other was the coupled neutron detectors by depositing 10 B 4 C onto substrates made from different materials such as Al and glass which then coupled with silicon-based detectors. The responses of these neutron detectors to neutrons (Cf-252) were measured individually. It's showen that the detection capability of direct contact neutron detectors was lower than the coupled neutron detectors. For the coupled detectors, the detector by depositing 10 B 4 C on the aluminum substrate was found to be superior than that by depositing 10 B 4 C on the glass substrate.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135565865","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

Detection of flat-bottom holes in composite materials using multi-dimensional complementary ensemble empirical mode decomposition algorithm 基于多维互补系综经验模态分解算法的复合材料平底孔检测

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/t11002

Yan Zhang, Zhaoming Li, Jin Wang, Tengda Zhang, Yuzhong Zhang

{"title":"Detection of flat-bottom holes in composite materials using multi-dimensional complementary ensemble empirical mode decomposition algorithm","authors":"Yan Zhang, Zhaoming Li, Jin Wang, Tengda Zhang, Yuzhong Zhang","doi":"10.1088/1748-0221/18/11/t11002","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/t11002","url":null,"abstract":"Abstract Due to high-temperature resistance, high strength, and excellent fatigue resistance, composite materials are widely used in automotive manufacturing, aerospace, infrastructure and other fields. Consequently, the demand for defect detection of composite materials is also increasing. As a non-destructive testing technique, the active infrared thermography, which can achieve full-field defect detection, is suitable for defect detection of composite materials. However, this method is susceptible to noises caused by the environment and heating sources. In order to solve the problem of the defect signal being submerged by these noises, a multi-dimensional complementary ensemble empirical mode decomposition (MCEEMD) algorithm is introduced in this paper. This method can decompose the signal into the low-frequency background noise, the high-frequency heating noise, and useful defect signals, and these noises can be easily removed to improve the contrast to noise ratio (CNR) of defect images. Based on this proposed method, a defect detection experiment on the carbon fiber reinforced plastic (CFRP) is performed in this paper, and experimental results show that the method can effectively remove environmental noise and heating noise, and it can detect 11 out of 12 defects on the CFRP sample with an average CNR of 9.107. Compared with the traditional differential absolute contrast method, this method can detect one additional small defect with the aspect ratio of 1.67 and one deep defect with a depth of 2 mm.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"3 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135765268","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