Journal of Instrumentation最新文献_第7页

Stray light suppression for Thomson scattering diagnostic on linear magnetized plasma device 线性磁化等离子体器件汤姆逊散射诊断中的杂散光抑制

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/c11002

Zhiyi Lin, Jinlin Xie, Qiaofeng Zhang, Mengmeng Xu, Qingbin Zeng

引用次数: 0

3D printed cortical bone mimic-material for medical physics 医学物理用3D打印皮质骨模拟材料

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11007

Luis Felipe Cardoso Lima, Eric Cardona Romani, Felipe Lima Bourguignon, Juan Lucas Nachez, Delano Valdivino Santos Batista, Marcelino José dos Anjos, Gabriel da Cruz Ferreira, Catherine Costa Oliveira, Lidia Vasconcellos de Sá, Ricardo Tadeu Lopes

引用次数: 0

Design and characterization of multichannel front-end electronics for detectors at HIRFL and HIAF HIRFL和HIAF探测器多通道前端电子元件的设计与表征

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/c11006

S. Wan, H. Yang, J. Zhu, C. Liu, Y. Song, Y. Jia, T. Liu, C. Zhao

引用次数: 0

Generalizing to new geometries with Geometry-Aware Autoregressive Models (GAAMs) for fast calorimeter simulation 将几何感知自回归模型(GAAMs)推广到新的几何形状，用于快速量热计模拟

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11003

Junze Liu, Aishik Ghosh, Dylan Smith, Pierre Baldi, Daniel Whiteson

{"title":"Generalizing to new geometries with Geometry-Aware Autoregressive Models (GAAMs) for fast calorimeter simulation","authors":"Junze Liu, Aishik Ghosh, Dylan Smith, Pierre Baldi, Daniel Whiteson","doi":"10.1088/1748-0221/18/11/p11003","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/p11003","url":null,"abstract":"Abstract Generation of simulated detector response to collision products is crucial to data analysis in particle physics, but computationally very expensive. One subdetector, the calorimeter, dominates the computational time due to the high granularity of its cells and complexity of the interactions. Generative models can provide more rapid sample production, but currently require significant effort to optimize performance for specific detector geometries, often requiring many models to describe the varying cell sizes and arrangements, without the ability to generalize to other geometries. We develop a geometry-aware autoregressive model, which learns how the calorimeter response varies with geometry, and is capable of generating simulated responses to unseen geometries without additional training. The geometry-aware model outperforms a baseline unaware model by over 50% in several metrics such as the Wasserstein distance between the generated and the true distributions of key quantities which summarize the simulated response. A single geometry-aware model could replace the hundreds of generative models currently designed for calorimeter simulation by physicists analyzing data collected at the Large Hadron Collider. This proof-of-concept study motivates the design of a foundational model that will be a crucial tool for the study of future detectors, dramatically reducing the large upfront investment usually needed to develop generative calorimeter models.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"33 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":"135514615","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: 2

A low-power and high-gain frontend for GHz application using trans-impedance amplifier for fast particle detection 一种低功耗高增益前端，用于GHz应用，使用反阻抗放大器进行快速粒子检测

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11010

M.J. Kholili, M. Miyahara, M. Shoji, E. Kurniawan, J.A. Prakosa, M.M. Tanaka

{"title":"A low-power and high-gain frontend for GHz application using trans-impedance amplifier for fast particle detection","authors":"M.J. Kholili, M. Miyahara, M. Shoji, E. Kurniawan, J.A. Prakosa, M.M. Tanaka","doi":"10.1088/1748-0221/18/11/p11010","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/p11010","url":null,"abstract":"Abstract In this paper, we present a front-end for gigahertz applications, FGATI, which utilizes a transimpedance amplifier design to amplify the current signal from a diamond particle detector. The transimpedance amplifier design adopts a flipped-voltage-follower-based current-mirror (FVF-CM) topology as the input stage, offering advantages such as low power consumption, large transimpedance gain, gigahertz bandwidth, and reasonable noise levels. The FVF-CM topology was realized to improve noise reduction with a fully differential output configuration. The design was implemented as an ASIC chip using 65 nm CMOS silicon technology. The bandwidth measurement of the FGATI prototype demonstrated a 3-dB bandwidth of 1.2 GHz. Furthermore, the amplifier's power consumption is low, drawing only 7.2 mW/channel from a 1.2 V power supply, including the buffer stage. The measurement of the FGATI output signal indicated an excellent transimpedance gain of 79.2 dBΩ and a noise level of 6.7 mV rms . These findings highlight the feasibility and effectiveness of the proposed front-end design in high-frequency applications.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"18 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135765583","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

Channeling acceleration in crystals and nanostructures and studies of solid plasmas: new opportunities 晶体和纳米结构中的通道加速以及固体等离子体的研究:新的机遇

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11008

Ariniello, Robert, Corde, Sebastien, Davoine, Xavier, Ekerfelt, Henrik, Fiuza, Frederico, Gilljohann, Max, Gremillet, Laurent, Mankovska, Yuliia, Piekarz, Henryk, Claveria, Pablo San Miguel, Shiltsev, Vladimir, Taborek, Peter, Tajima, Toshiki

引用次数: 1

Development of the Thomson scattering measurement system for cascade arc device with indirectly heated hollow cathode 间接加热空心阴极梯级电弧装置汤姆逊散射测量系统的研制

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/c11007

K. Yamasaki, K. Okuda, J. Kono, A. Saito, D. Mori, R. Suzuki, Y. Kambara, R. Hamada, S. Namba, K. Tomita, Y. Pan, N. Tamura, C. Suzuki, H. Okuno

{"title":"Development of the Thomson scattering measurement system for cascade arc device with indirectly heated hollow cathode","authors":"K. Yamasaki, K. Okuda, J. Kono, A. Saito, D. Mori, R. Suzuki, Y. Kambara, R. Hamada, S. Namba, K. Tomita, Y. Pan, N. Tamura, C. Suzuki, H. Okuno","doi":"10.1088/1748-0221/18/11/c11007","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/c11007","url":null,"abstract":"Abstract We have developed a Thomson scattering measurement system for the cascade arc discharge device designed for the plasma window (PW) application study. The PW is one of the plasma application techniques that sustain the steep pressure gradient between high pressure (10–100 kPa) and a vacuum environment due to the thermal energy of the plasma. Since the plasma thermal energy is the essential parameter for the pressure separation capability of PW, we installed the Thomson scattering measurement system to observe the electron density and temperature within the anode and cathode of the PW for the detailed analysis of the pressure separation capability. The frequency-doubled Nd:YAG laser (532 nm, 200 mJ, 8 ns) was employed for the probe laser. The scattered light was fed to the triple grating spectrometer. The notch filter between the first and second grating eliminated the stray light, realizing a sufficiently high signal-to-noise ratio. The Thomson scattering measurement system successfully obtained the electron density and temperature of the cascade arc plasma at 20 mm downstream from the tip of the cathode. The installed system successfully obtained the Thomson scattering spectrum and showed that the electron density increased from 2 × 10 19 m -3 to 7 × 10 19 m -3 with the discharge power, while the electron temperature was almost constant at about 2 eV. The obtained data successfully contributed to the study of the pressure separation capability of the PW.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"28 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":"135566155","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 simple, flexible technique for RF cavity wake-field calculations 一种简单、灵活的射频腔尾流场计算技术

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11004

Brian J. Vaughn

{"title":"A simple, flexible technique for RF cavity wake-field calculations","authors":"Brian J. Vaughn","doi":"10.1088/1748-0221/18/11/p11004","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/p11004","url":null,"abstract":"Abstract It is typical in the accelerator field to model machine components, especially RF cavities, as parallel RLC resonators. To properly model wake-fields, knowledge of the time-domain voltage resulting from beam excitation is often necessary. While analytical and quasi-analytical expressions are available to accomplish this for common bunch distributions such as the Gaussian, analogous results for less standard distributions can be difficult or computationally-taxing to obtain using direct methods, which opens the door for the development of a more generalized technique. In this paper, a formulation is created that allows for the simple computation of the time-domain voltage waveform of an RLC resonator. The formulation uses the Cauchy Residue Theorem to extract the convolution result from the Fourier Domain, and if current distribution Fourier Transform has no poles, knowledge of its value is only required at one specific evaluation point. This greatly simplifies the computation of the time domain voltage for a large amount of bunch distributions both common and uncommon. Accuracy considerations for this technique and the approximation of accelerator components as RLC resonators are also discussed, resulting the development of a figure of merit for quantifying the robustness of this type of approximation.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"34 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":"135514609","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

An efficient calibration method for digital bandwidth interleaving sampling system 一种有效的数字带宽交错采样系统标定方法

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/p11001

Yubo Ma, Jie Wu, Xiaochang Jiang, Boyi Xu, Shengyu Qi

{"title":"An efficient calibration method for digital bandwidth interleaving sampling system","authors":"Yubo Ma, Jie Wu, Xiaochang Jiang, Boyi Xu, Shengyu Qi","doi":"10.1088/1748-0221/18/11/p11001","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/p11001","url":null,"abstract":"Abstract Digital bandwidth interleaving (DBI) is a technique that can simultaneously increase system sampling rate and bandwidth. While DBI can reduce the impact of clock jitter on the dynamic performance of the system compared to time-interleaved sampling systems, achieving dynamic performance comparable to time-interleaved analog-to-digital converters (TIADC) remains challenging due to phase misalignment in crossover bands caused by analog filters and nonlinearity in analog mixers. To address these issues, this paper proposes a method to calibrate DBI sampling systems using PRBS signals. This method involves injecting pseudo-random binary sequence (PRBS) signal into the system input as a background signal and calculating the correlation between the output sampling sequence and the PRBS sequence to obtain the response of each sampling channel. Compared with traditional single tone signal or pulse signal, this method offers a more efficient background calibration method. To verify the effectiveness of this method, this paper designed a hybrid parallel sampling system combining DBI and TIADC with a 20 GSPS sampling rate and 8 GHz bandwidth to evaluate the effectiveness of the calibration method. In the performance test of the sampling system before and after calibration, this calibration method improved the system's Signal-to-Noise and Distortion Ratio (SINAD) by up to 13 dB, Spurious Free Dynamic Range (SFDR) by up to 27 dB, and phase response flatness better than 0.3 radians.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"35 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":"135510023","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

CNR performance of semiconductor materials for X-ray imaging of breast calcifications 乳房钙化x射线成像中半导体材料的CNR性能

4区工程技术

Journal of Instrumentation Pub Date : 2023-11-01 DOI: 10.1088/1748-0221/18/11/t11001

L. Mendoza, C. Avila, R. Rodríguez, L. Loaiza, G. Roque

{"title":"CNR performance of semiconductor materials for X-ray imaging of breast calcifications","authors":"L. Mendoza, C. Avila, R. Rodríguez, L. Loaiza, G. Roque","doi":"10.1088/1748-0221/18/11/t11001","DOIUrl":"https://doi.org/10.1088/1748-0221/18/11/t11001","url":null,"abstract":"Abstract We present the results of a GAMOS/GEANT4 computer simulation of a standard X-ray mammography system, which consists of a Tungsten 28 kVp polychromatic X-ray source with a 50 μm Rh filter, a mammography phantom with Al 2 O 3 spherical specks of different diameters, and a generic pixel detector (55 μm × 55 μm pixel size) with different types of semiconductor sensors. The number of photons simulated is calibrated to produce similar entrance surface dose (ESD) as the one used by a standard clinical mammography screening. Estimates of Contrast to Noise Ratio (CNR) as a function of ESD, sensor thickness and microcalcification diameter are presented for four different sensor materials: Silicon (Si), Cadmium Telluride (CdTe), Gallium Arsenide (GaAs) and Perovskite (MAPbI3). For the X-ray energy spectrum and pixel size considered, and an ESD dose of 4 mGy, our study shows that, with the exception of Si, these sensors, as thin as 200 μm, are able to resolve (with at least 3 standard deviations above background) Al 2 O 3 spherical specks up to a minimum diameter of 180 μm, having statistically compatible CNR performance. The increase in substrate thickness has a substantial improvement in the CNR values provided by the Si sensor, while for the other cases the enhancement of CNR is marginal and consistent with statistical uncertainties with the thinnest case considered.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"34 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":"135514610","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