Use of Different Reactor Physics Models and CADIS Accelerated MCNP to Yield a 1 MeV Silicon Equivalent Flux for Neutron Damage [0.03%]
利用不同的反应堆物理模型和CADIS加速MCNP计算1MeV硅当量中子损伤剂量注量
Joe A Johnson,Glenn E Sjoden,Taylor S Kimball et al.
Joe A Johnson et al.
Here we develop and explore hybrid simulation techniques to expedite pre-test analysis of experimental designs for radiation hardness assurance testing efforts. Specifically, we focus on neutron displacement damage (NDD) testing, governed b...
M S Squillante,M J Breen,J F Christian et al.
M S Squillante et al.
The detector that converts X-ray intensity into a digitized electronic signal, processed into an image, often limits the performance of modern X-ray imaging systems, whether for medical, research, or industrial applications. Digital radiogr...
Danyal J Turkoglu,H Heather Chen-Mayer
Danyal J Turkoglu
A linear fast neutron beam chopper has been deployed at a prompt gamma activation analysis instrument, enabling in-beam activation analysis of short-lived T 1 / 2 > ∼ 10 ms neutron capture products without the need for sample ...
Yixin Li,Xinjie Zeng,Amir H Goldan
Yixin Li
Signal multiplexing is necessary to reduce a large number of readout channels in positron emission tomography (PET) scanners to minimize cost and achieve lower power consumption. However, the conventional weighted average energy method cann...
A New Pulse Pileup Rejection Method Based on Position Shift Identification [0.03%]
基于位置偏移识别的新脉冲堆积拒绝方法
Z Gu,D L Prout,R Taschereau et al.
Z Gu et al.
Pulse pileup events degrade the signal-to-noise ratio (SNR) of nuclear medicine data. When such events occur in multiplexed detectors, they cause spatial misposition, energy spectrum distortion and degraded timing resolution, which leads to...
6LiF:ZnS(Ag) Neutron Detector Performance Optimized Using Waveform Recordings and ROC Curves [0.03%]
基于波形记录和ROC曲线的6LiF:ZnS(Ag)中子探测器性能优化
K Pritchard,A Osovizky,J Ziegler et al.
K Pritchard et al.
We used Gaussian separation and receiver operating characteristic (ROC) curves to optimize the neutron sensitivity and gamma rejection of an ultra-thin 6LiF:ZnS(Ag)-scintillator-based neutron detector paired with a silicon photomultiplier (...
Dual-Polarity SiPM Readout Electronics Based on 1-bit Sigma-Delta Modulatiom Circuit for PET Detector Applications [0.03%]
基于单比特Sigma-Delta调制电路的正负双极SiPM读出电子学应用于PET探测器中
Xinyi Cheng,Kun Hu,Yiping Shao
Xinyi Cheng
We investigated a simple and effective method to extend 1-bit sigma-delta modulation (SDM) circuit based charge-to-digital converter (QDC) to read dual-polarity silicon photomultiplier (SiPM) output signals. With the same QDC circuit but di...
Development of an Eight-Channel Time-Based Readout ASIC for PET Applications [0.03%]
一种八通道基于时间读出的PET应用ASIC的发展研究
Zhi Deng,Allan K Lan,Xishan Sun et al.
Zhi Deng et al.
An eight-channel readout ASIC has been developed for reading output signals from solid-state photomultipliers for positron emission tomography applications. This ASIC converts both the signal charge and occurring time to digital timing puls...
Improvement of Performance of Cardiac SPECT Camera Using Curved Detectors With Pinholes [0.03%]
使用带有针孔的曲面探测器来改进心脏SPECT相机的性能
Joyoni Dey
Joyoni Dey
SPECT is primarily used in the clinic for cardiac myocardial perfusion imaging. However, for SPECT, sensitivity is impaired due to the need for collimation. System resolution FWHM is poor as well (~ 1 cm). In this work the resolution of a c...
Measurement of Cosmic Ray and Trapped Proton LET Spectra on the STS-95 HOST Mission [0.03%]
STS-95 HOST任务中宇宙射线和困住质子LET能谱的测量
E G Stassinopoulos,J L Barth,C A Stauffer
E G Stassinopoulos
This paper reports on in situ measurements of the Linear-Energy-Transfer (LET) spectra of galactic cosmic rays and their progeny and of trapped Van Allen belt protons as recorded by a Pulse Height Analyzer (PHA) radiation spectrometer which...