Preliminary design of the International X-ray Observatory flight mirror assembly

2009 ◽  
Author(s):  
Ryan S. McClelland ◽  
Timoth M. Carnahan ◽  
Michael K. Choi ◽  
David W. Robinson ◽  
Timo T. Saha
Keyword(s):  
Preliminary Design ◽  
X Ray

Requirement Analysis and Preliminary Design for Energy Dispersive X-ray Fluorescence Analysis Software

1990 ◽  
Vol 34 ◽  
pp. 149-156
Author(s):  
Zhaogui Liu
Keyword(s):  
Fluorescence Analysis ◽  
Energy Dispersive ◽  
Requirement Analysis ◽  
Preliminary Design ◽  
Sequence Structure ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Complex Information ◽  
Software Packages ◽  
Quantitative Analyses

AbstractThe rapid progress of x-ray fluorescence analysis spectrometers has been closely associated with advances in computers. Due to the power of computers, it is possible to acquire the data automatically and interpret complex information accurately and quickly, so as to provide both qualitative and quantitative analyses. It is now about thirty years that computers have been applied to X-Ray Fluorescence Analysis (XRFA). Few workers have discussed the style of the various approaches, although many different software packages have been used for XRFA. Requirement analysis has been performed for Energy Dispersive (ED) XRFA, and preliminary designs are given for three types of structures: i. Sequence structure, ii. Tree structure, and iii. Net structure.

Picosecond and femtosecond streak cameras: present and future designs

1980 ◽  
Vol 298 (1439) ◽  
pp. 281-285 ◽  
Keyword(s):  
Time Resolution ◽  
Time Domain ◽  
Optical Design ◽  
Preliminary Design ◽  
X Ray ◽  
Time Dispersion ◽  
Expected Performance ◽  
Experimental Values ◽  
Imaging Properties ◽  
Streak Tube

For many applications of time-domain spectroscopy it is desirable to improve the time resolution of electron-optical streak cameras to less than 200 fs in the u.v. visible and i.r. and to ca . 1 ps at X-ray wavelengths. A suite of interactive computer programs has been developed for electron-optical design, taking into account time dispersion. It is possible to analyse rapidly the details of both spatial and temporal imaging properties of currently available streak tubes and to optimize the designs for particular applications. The computed results are shown to be in excellent agreement with the experimental values for the Photochron II streak tube. The expected performance characteristics of a preliminary design for a new tube, the Photochron III, are given.

scholarly journals The scanning four-bounce monochromator for beamline I20 at the Diamond Light Source

2018 ◽  
Vol 25 (5) ◽  
pp. 1556-1564 ◽  
Author(s):  
Shusaku Hayama ◽  
Graham Duller ◽  
John P. Sutter ◽  
Monica Amboage ◽  
Roberto Boada ◽  
...  
Keyword(s):  
Experimental Data ◽  
Energy Range ◽  
Light Source ◽  
Mechanical Stability ◽  
Feedback Mechanism ◽  
Preliminary Design ◽  
X Ray ◽  
Rotary Axes ◽  
Read Head ◽  
X Ray Absorption

A description of the technical and design details of a scanning four-bounce crystal monochromator that has recently been commissioned for the Versatile X-ray Absorption Spectroscopy (XAS) beamline at Diamond Light Source is presented. This device consists of two independent rotary axes of unique design which are synchronized using a multiple read-head encoder system. This monochromator is shown to be capable of maintaining the flux throughput of the Bragg axes without the need of any external feedback mechanism from 4 to 20 keV. The monochromator is currently equipped with cryogenically cooled crystals with the upstream axis consisting of two independent Si(111) crystals and a pair of channel-cut crystals in the downstream axis. The possibility of installing an additional Si(311) crystal-set to extend the energy range to 34 keV is incorporated into the preliminary design of the device. Experimental data are presented showing the exceptional mechanical stability and repeatability of the monochromator axes.

Preliminary design of a zone plate based hard X-ray monochromatic diffraction nanoprobe for materials studies at APS

2013 ◽  
Author(s):  
Zhonghou Cai ◽  
Wenjun Liu ◽  
Jonathan Z. Tischler ◽  
Deming Shu ◽  
Ruqing Xu ◽  
...  
Keyword(s):  
Zone Plate ◽  
Preliminary Design ◽  
X Ray

Preliminary design of I&C for ITER radial X-ray camera system based on CODAC

2019 ◽  
Vol 143 ◽  
pp. 201-206
Author(s):  
Xiuli Sheng ◽  
Minyou Ye ◽  
Liqun Hu ◽  
Shi Li ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Preliminary Design ◽  
Camera System ◽  
X Ray
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