2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)最新文献_第6页

A small 3D CZT payload for hard X-ray polarimetry and spectroscopic imaging 用于硬x射线偏振和光谱成像的小型3D CZT有效载荷

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431282

E. Caroli, N. Auricchio, C. Budtz-Jørgensen, R. M. Curado da Silva, G. De Cesare, S. del Sordo, P. Ferrando, J. Galvez, M. Hernanz, J. Isern, I. Kuvvetli, P. Laurent, O. Limousin, J. Maia, A. Meuris, M. Pinto, Nicolas Produit, J. Stephen, A. Zappettini

{"title":"A small 3D CZT payload for hard X-ray polarimetry and spectroscopic imaging","authors":"E. Caroli, N. Auricchio, C. Budtz-Jørgensen, R. M. Curado da Silva, G. De Cesare, S. del Sordo, P. Ferrando, J. Galvez, M. Hernanz, J. Isern, I. Kuvvetli, P. Laurent, O. Limousin, J. Maia, A. Meuris, M. Pinto, Nicolas Produit, J. Stephen, A. Zappettini","doi":"10.1109/NSSMIC.2014.7431282","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7431282","url":null,"abstract":"Currently, it is widely recognised that a measurement of the polarization status of cosmic sources high energy emission is a key observational parameter to understand the active production mechanism and its geometry. Therefore, new instrumentation operating in this energy range should be optimized also for this type of measurement. In this framework, we present the concept of a small high-performance imaging spectrometer designed for polarimetry between 100 and 600 keV suitable both for a stratospheric balloon-borne payload, and a small satellite mission. This instrument would be able to perform accurate and reliable measurement of the polarization status of different cosmic ray sources types simultaneously with fine spectroscopic measurements. The detector with 3D spatial resolution is based on a CZT spectrometer in a highly segmented configuration designed to operate as a high performance scattering polarimeter. We report on different configuration based on recent development results and possible improvements currently under study. Furthermore, we describe a possible baseline design of the payload and we present Monte Carlo evaluations of the achievable sensitivity for polarisation as a function of different detector characteristics.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131508686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparative study of the pulse shape discrimination (PSD) performance of fast neutron detectors 快中子探测器脉冲形状判别(PSD)性能的比较研究

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431178

P. Kendall, K. Duroe, P. Arthur, M. Ellis, M. Owen, R. Woolf, E. Wulf, A. Hutcheson, B. Phlips

{"title":"Comparative study of the pulse shape discrimination (PSD) performance of fast neutron detectors","authors":"P. Kendall, K. Duroe, P. Arthur, M. Ellis, M. Owen, R. Woolf, E. Wulf, A. Hutcheson, B. Phlips","doi":"10.1109/NSSMIC.2014.7431178","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7431178","url":null,"abstract":"Certain scintillating materials are sensitive to both gamma and neutron radiation and can give information about the type of interacting radiation due to differences in the light output response. By collecting the light pulses and converting them to electrical signals the nature of the radiation can be determined by measuring the amount of electrical charge in the pulse tail - for neutrons, the pulses are longer, with more charge in the tail than for the shorter gamma pulses. This determination called Pulse Shape Discrimination (PSD) can nowadays be performed in real-time onboard digitisers during data collection. In this work several detectors (EJ301, EJ309 liquids; EJ299-33 plastic and p-terphenyl scintillators) of various shapes and sizes were connected to several digital Data Acquisition (DAQ) systems as well as the established digital / analogue hybrid Mesytec MPD8 / MADC-32 set up in a comparative study. The aim of the campaign was to produce a Figures of Merit (FOM) for the PSD performance of the various detector / DAQ combinations to give relative performance estimates of the CAEN V1751 10-bit 1 GSample/s digitiser in comparison with other DAQ solutions within a near-standardised experimental environment. It is likely that the DAQ set ups were not equivalent as significant differences in the matching of the detector outputs to the dynamic range of the digitisers were observed - however, with the configurations used in this campaign the CAEN V1751 digitiser showed superior FOM values to the Struck SiS3320, Bridgeport usbBase and Mesytec MPD-8 DAQ systems tested. Furthermore, there seemed little difference between the FOM from the faster but lower voltage resolution (1 GSample/s with 10 bits) CAEN V1751 compared to the slower but higher resolution (250 MSample/s with 12 bits) CAEN N6720 digitiser for this application.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131520530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Implementation of Self-organizing Map Based Positioning Scheme on FPGA 基于自组织地图的定位方案在FPGA上的实现

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430955

Deng Li, Yonggang Wang, Liwei Wang, Xinyi Cheng

引用次数: 3

Development of a list-mode ideal observer to perform classification tasks when imaging nuclear inspection objects under signal-known-exactly conditions 清单模式理想观测器的开发，用于在信号确切已知条件下对核检查对象成像时执行分类任务

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431051

Christopher J. MacGahan, M. Kupinski, N. Hilton, William C. Johnson, E. Brubaker

引用次数: 0

Fast scattering simulation tool for multi-energy x-ray imaging 多能x射线成像快速散射模拟工具

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430965

A. Sossin, J. Tabary, V. Rebuffel, J. Létang, N. Freud, L. Verger

引用次数: 9

Low-dose cardiac 4D cone-beam CT image reconstruction using two-cycle data 低剂量心脏四维锥束CT双周期图像重建

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430933

Sunhee Wi, Yunjeong Lee, Jiseoc Lee, Sajid Abbas, Seungryong Cho

引用次数: 0

HEMT-based photon-counting energy-resolving ultra-fast x-ray detector with improved sensitivity 改进灵敏度的基于hemt的光子计数能量分辨超快x射线探测器

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7430887

M. G. Ertosun, C. Levin

{"title":"HEMT-based photon-counting energy-resolving ultra-fast x-ray detector with improved sensitivity","authors":"M. G. Ertosun, C. Levin","doi":"10.1109/NSSMIC.2014.7430887","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7430887","url":null,"abstract":"We proposed to explore extremely fast digital switching devices used in telecommunications for use as photon counting, energy resolving x-ray detectors. The HEMT (High Electron Mobility Transistor), used in ultra-fast switches and low noise amplifiers, offers a very low noise and high frequency operation. For this study a HEMT-based photon-counting energy-resolving ultra-fast x-ray detector with improved sensitivity is proposed and studied via simulations. The hypothesis is that the x-ray interactions within the structure will be detected by monitoring the degradation in a data bit transmission (gating time and counting for bit errors) across the transistor. By monitoring the bit error rate and time for error free vs. erroneous transmission, one can calibrate and estimate the x-ray flux and energy. The aim of this study is to explore HEMT-based detector concept further and improve its sensitivity via incorporating a 500 um thick monolithically integrated absorber and study the characteristics of this new structure. We simulated cases for 10, 50 and 100 KeV photon energies, and the drain current pulse heights for the event detection of 10, 50 and 100 KeV photons were 4.18e-6A, 1.22e-5A, 1.98e-5A, respectively.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132707035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

STS-XYTER, a high count-rate self-triggering silicon strip detector readout IC for high resolution time and energy measurements STS-XYTER，用于高分辨率时间和能量测量的高计数率自触发硅条检测器读出IC

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431048

K. Kasinski, R. Kleczek, P. Otfinowski, R. Szczygiel, P. Grybos

{"title":"STS-XYTER, a high count-rate self-triggering silicon strip detector readout IC for high resolution time and energy measurements","authors":"K. Kasinski, R. Kleczek, P. Otfinowski, R. Szczygiel, P. Grybos","doi":"10.1109/NSSMIC.2014.7431048","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7431048","url":null,"abstract":"We report on the design of a 128-channel ASIC named STS-XYTER (Silicon Tracking System - X - Y - Time -Energy Read-out) dedicated for signal detection from doublesided silicon microstrip sensors with high capacitance (CDET ≈ 30 pF). The STS-XYTER contains: 128 charge processing channels, a calibration unit, a biasing circuitry based on built-in band-gap reference source and a full digital back-end, which provides synchronization, control and sparsified fast data readout through four, 250 MHz DDR LVDS links based on the CBMnet protocol. The single readout channel uses two parallel signal processing paths (fast and slow) to handle an average rate of input pulses equals 150 kHz and provide an information about both interaction time and deposited charge with good noise performance and low power consumption (6.2 mW/channel) at the same time. The fast path, which is dedicated for determining the input charge arrival time, is built of: a fast shaper, a discriminator, a pulse stretcher and a time stamp latch. The slow path, which is optimized for a particle energy measurement, consists of a slow shaper, a 5-bit flash ADC and a digital peak detector.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"50 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133158624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

X-ray transmission characteristics measurement of a polycapillary lens installed in an analytical electron microscope 安装在分析电子显微镜中的多毛细透镜的x射线透射特性测量

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431068

A. Takano, K. Maehata, N. Iyomoto, T. Hara, K. Mitsuda, N. Yamasaki, Keiichi Tanaka

{"title":"X-ray transmission characteristics measurement of a polycapillary lens installed in an analytical electron microscope","authors":"A. Takano, K. Maehata, N. Iyomoto, T. Hara, K. Mitsuda, N. Yamasaki, Keiichi Tanaka","doi":"10.1109/NSSMIC.2014.7431068","DOIUrl":"https://doi.org/10.1109/NSSMIC.2014.7431068","url":null,"abstract":"An energy dispersive spectrometer with a superconducting transition edge sensor (TES) microcalorimeter mounted on a transmission electron microscope (TEM) has been developed to improve the accuracy of nanoscale material analysis. TES microcalorimeters generally have a sensitive surface area on the order of 100 × 100 μm2. Furthermore, because of the magnetic field generated by the TEM objective lens, a TES microcalorimeter cannot be placed in a TEM column. Therefore, a polycapillary lens is used for collecting X-rays emitted by a TEM specimen on the TES microcalorimeter. The X-ray transmission characteristics of the polycapillary lens typically depend on the geometrical arrangements of the optics and the X-ray energy. Energy spectrum measurements were carried out for X-rays transmitted by a polycapillary lens installed in a TEM for evaluating X-ray transmission characteristics of the optics. Values of the focal spot size and the intensity gain were obtained by analyzing the experimental energy spectra in the energy range of 1.0-14.0 keV.","PeriodicalId":144711,"journal":{"name":"2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133247043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Proposal of a 4D ML reconstruction strategy for PET-based treatment verification in ion beam radiotherapy 离子束放疗中基于pet的治疗验证的4D ML重建策略的提出

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI: 10.1109/NSSMIC.2014.7431001

E. De Bernardi, C. Gianoli, R. Ricotti, M. Riboldi, G. Baroni

引用次数: 4