搜索结果: 1-15 共查到“FEL”相关记录25条 . 查询时间(0.109 秒)
IR-FEL装置数据存档和查询系统
IR-FEL 数据存档 数据查询 Archiver Appliance Vue.js
2021/1/8
IR-FEL装置控制系统是基于EPICS的分布式控制系统，装置运行过程中产生的历史数据可用于装置的性能分析和故障诊断，对装置的性能提升和运行维护具有重要意义。本文以Archiver Appliance作为历史数据存档工具，采用前、后端分离的软件架构，设计和开发了IR-FEL装置数据存档和查询系统。系统后端包含历史数据查询和实时数据推送两种服务端程序，使用Nginx反向代理服务器提供了统一的数据查询...
Stimulated coherent spontaneous emission in an FEL with 'quiet' bunches
shot noise reduction controlled microbunching instability laser heater
2012/5/31
For a planar FEL configuration we study stimulated coherent spontaneous emission driven by a gradient of the bunch current in the presence of different levels of noise in bunches. To perform a vast am...
Experimental Verification of the Chemical Sensitivity of Two-Site Double Core-Hole States Formed by an X-ray FEL
Experimental Verification Chemical Sensitivity Two-Site Double Core-Hole States X-ray FEL
2012/5/17
We have performed X-ray two-photon photoelectron spectroscopy (XTPPS) using the Linac Coherent Light Source (LCLS) X-ray free-electron laser (FEL) in order to study double core-hole (DCH) states of CO...
CAEP远红外100 μm FEL自发辐射谱的实验研究
自发辐射 自由电子激光(FEL) 摇摆器
2009/10/26
在FEL实验中，电子束通过摇摆器，一方面由于周期性磁场作用，电子束轨迹要周期性的摆动，另一方面还要辐射同FEL辐射波长一致的自发辐射，该辐射谱反映电子束、摇摆器集成后的参数。在CAEP(Institute of China Academic Engineering Physics)远红外100 μm FEL实验中，自发辐射谱通过Ge∶Ga低温探头和远红外100 μm光栅谱仪测量。文章侧重从实际摇摆...
SR-FEL宽带腔镜与双带腔镜光学膜系实验研究与研制
储存环自由电子激光 腔镜光学膜系 电子束蒸发沉积 离子束溅射沉积
2009/7/30
利用“电子束蒸发沉积薄膜生长技术+离子束溅射沉积薄膜生长技术”、“HfO2/SiO2+Al2O3/SiO2+M-SiO2”复合光学膜系设计技术、400°C4h高温处理技术, 研制的SR-FEL宽带腔镜光学膜系在355nm中心波长的绝对光学反射率测量值为R(355nm)=99.45%, 反射光谱带宽测量值为Δλ(R≥99.00%)=75nm; 研制的355nm/248nm双带腔镜光学膜系, 在355...
北京大学SASE FEL的参数优化研究
SASE?FEL 饱和长度 外聚焦平面扭摆器 增益长度
2009/7/30
SASEFEL是获得短波长X射线激光的最佳途径,SASEFEL的理论和实验研究是当前FEL研究的热点.本文利用北京大学超导加速器装置提供的电子束,通过解析理论和3D模型的数值模拟方法得到了实现SASEFEL的扭摆器的优化参数,并讨论了电子束的束流品质参数对SASEFEL的饱和长度和功率的影响,对加速器的设计和调试有重要的参考意义.
Characteristics of MIR-FEL Induced-Sound in Biological Tissues
MIR-FEL CO2 Laser Medical application
2009/6/15
In this paper, we examine the pressure level and the wave form, which is the sound produced when incising biological tissue using a TEA-CO2 laser and a Middle-Infrared Free Electron Laser (MIR-FEL). T...
Mass Spectrometry of Bio-Molecule by UV/FEL Matrix-Assisted Laser Desorption/Ionization
Matrix-assisted laser desorption/ionization (MALDI) Time-of-flight mass spectrometry (TOFMS) Free electron laser (FEL) Biological macromolecule
2009/6/15
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOFMS) is a powerful and robust tool for protein identification. We proposed a novel MALDI method (UV/FEL MALDI) bas...
Carrier Dynamics in Semiconductors under MIR FEL Excitation
Free electron laser Mid-infrared Semiconductor
2009/6/15
Free electron lasers have unique advantages; wide-range wavelength tunability, ultrashort pulse operation and intense peak power. The high-power coherent laser beam in the mid-infrared (MIR) region pr...
Real-Time Monitoring of the Surface Modification of Root Dentin Using MIR-FEL-Induced Acoustic Waves
Real-time monitoring Photoacoustic spectroscopy Root surface caries
2009/6/10
For a non-invasive laser treatment, a real-time and non-contact monitoring technique is needed. We have investigated the extent of the surface modification of root dentin using photoacoustic spectrosc...
The FEL Irradiation Effects against a Phosphorylated Peptide and the Infrared Spectrographic Distinguishing Method of a Phosphate Group
Free Electron Laser (FEL) Phosphorylation and dephoosphorylation Fourier transform infrared Spectrometer (FT-IR)
2009/6/8
Phosphorylation and dephosphorylation that are most remarkable posttranslational modifications are important to the activation and deactivation of protein in living system. In the first approach, we s...
用于短波长FEL的光阴极微波电子枪设计研究
微波电子枪 自由电子激光 发射度补偿
2009/5/22
高增益、短波长自由电子激光器需要发射度低、峰值电流高的短脉冲电子束流.采用发射度补偿技术,设计了一台S波段、一个半腔体的光阴极微波电子枪以用于建议中的SDUV-FEL装置.POISSON,SUPERFISH和PARMELA程序的计算表明:当微脉冲电量为2nC时,这种设计能产生εn,rms=2.3π·mm·mrad、Ek=4.8MeV的电子束流.报道了该枪的设计考虑和模拟结果.
光速调管FEL的小信号增益理论
自由电子激光 光速调管 小信号增益 色散段参数
2009/2/20
利用自由电子激光（FEL）纵模统一理论，系统地分析了光速调管FEL的小信号增益理论，并对色散参数Nd、束流能散度和发射度的影响进行了讨论。
高平均功率FEL的标度律
自由电子激光的标度律 平均功率
2009/2/19
讨论了设计高平均功率康普顿型自由电子激光（FEL）装置的基本思路与相关的标度律。强调了除电子束平均流强外，能量抽取率是装置实现高平均功率的决定性因素。这个量的标度律基本上由摇摆器参数（周期数）单独确定，与摇摆器周期长度和强度无关，与激光波长无关。指出如无能量回收系统，按目前光阴极电子枪+超导射频加速结构装置可预期的电子束团100 pC/bunch，平均电流为mA情况下，15MeV电子束能给出的激光...