Measurements of absolute sensitivity of semiconductor detectors for 7–20 keV x rays using synchrotron radiation of VEPP‐3 storage ring

1992 ◽  
Vol 63 (1) ◽  
pp. 685-688 ◽  
Author(s):  
I. P. Dolbnya ◽  
N. A. Mezentsev ◽  
V. F. Pindyurin ◽  
K. P. Romanenko ◽  
A. N. Subbotin
Keyword(s):  
Synchrotron Radiation ◽  
Storage Ring ◽  
Semiconductor Detectors ◽  
X Rays ◽  
Absolute Sensitivity

Accelerator-based X-ray sources: synchrotron radiation, X-ray free electron lasers and beyond

2019 ◽  
Vol 377 (2147) ◽  
pp. 20180231 ◽  
Author(s):  
Tetsuya Ishikawa
Keyword(s):  
Synchrotron Radiation ◽  
Storage Ring ◽  
Free Electron ◽  
Continuous Wave ◽  
Transitional Period ◽  
Light Sources ◽  
X Rays ◽  
Free Electron Lasers ◽  
Beam Emittance ◽  
X Ray

The evolution of synchrotron radiation (SR) sources and related sciences is discussed to explain the ‘generation’ of the SR sources. Most of the contemporary SR sources belong to the third generation, where the storage rings are optimized for the use of undulator radiation. The undulator development allowed to reduction of the electron energy of the storage ring necessary for delivering 10 keV X-rays from the initial 6–8 GeV to the current 3 Gev. Now is the transitional period from the double-bend-achromat lattice-based storage ring to the multi-bend-achromat lattice to achieve much smaller electron beam emittance. Free electron lasers are the other important accelerator-based light sources which recently reached hard X-ray regime by using self-amplified spontaneous emission scheme. Future accelerator-based X-ray sources should be continuous wave X-ray free electron lasers and pulsed X-ray free electron lasers. Some pathways to reach the future case are discussed. This article is part of the theme issue ‘Fifty years of synchrotron science: achievements and opportunities’.

scholarly journals Pixel detectors for diffraction-limited storage rings

2014 ◽  
Vol 21 (5) ◽  
pp. 1006-1010 ◽  
Author(s):  
Peter Denes ◽  
Bernd Schmitt
Keyword(s):  
Synchrotron Radiation ◽  
Storage Ring ◽  
Dynamic Range ◽  
State Of The Art ◽  
Storage Rings ◽  
X Rays ◽  
X Ray ◽  
Current State ◽  
Pixel Detectors ◽  
Radiation Sources

Dramatic advances in synchrotron radiation sources produce ever-brighter beams of X-rays, but those advances can only be used if there is a corresponding improvement in X-ray detectors. With the advent of storage ring sources capable of being diffraction-limited (down to a certain wavelength), advances in detector speed, dynamic range and functionality is required. While many of these improvements in detector capabilities are being pursued now, the orders-of-magnitude increases in brightness of diffraction-limited storage ring sources will require challenging non-incremental advances in detectors. This article summarizes the current state of the art, developments underway worldwide, and challenges that diffraction-limited storage ring sources present for detectors.

Synchrotron radiation possibilities at CHEER

1981 ◽  
Vol 59 (11) ◽  
pp. 1811-1816
Author(s):  
J. B. A. Mitchell ◽  
J. Wm. McGowan ◽  
G. M. Bancroft
Keyword(s):  
Synchrotron Radiation ◽  
Storage Ring ◽  
Radiation Spectrum ◽  
Far Infrared ◽  
Critical Energy ◽  
X Rays ◽  
Electron Storage ◽  
Materials Analysis ◽  
X Ray

The 10 GeV CHEER electron storage ring will produce more than 1 MW of synchrotron radiation per turn with photon energies extending from the far infrared to the hard X-ray region. The critical energy of the synchrotron radiation spectrum will be 22 keV.Applications of hard X-rays to materials analysis are described and a discussion of some of the problems which will be encountered in implementing a synchrotron radiation facility at CHEER is presented.

High heat load absorbers in Taiwan Photon Source storage ring

2010 ◽  
Vol 1 (MEDSI-6) ◽  
Author(s):  
I. C. Sheng ◽  
Y. T. Cheng ◽  
C. K. Kuan ◽  
G. Y. Hsiung ◽  
J. R. Chen
Keyword(s):  
Synchrotron Radiation ◽  
Storage Ring ◽  
High Heat ◽  
High Energy ◽  
Dipole Source ◽  
X Rays ◽  
High Heat Load ◽  
Under Construction ◽  
Power Densities ◽  
Photon Source

Taiwan Photon Source (TPS) is under construction at the National Synchrotron Radiation Research Center (NSRRC). This 518 m circumference synchrotron accelerator will generate 3 GeV and 500 mA high-energy X-rays. Absorbers in the storage ring will receive relatively high power densities (at a distance of 2.2 m from the dipole source). Three types of crotch absorbers for B1–B3 storage chambers were designed and prototyped. An end absorber in B3 is also designed and implemented to protect the downstream components in the chamber from being heated by the synchrotron radiation. Intensive vacuum brazing between Oxygen Free High Conductivity copper (OFHC) and stainless steel was carried out while fabricating the absorber assembly. The analysis, design and construction of several absorbers are reported in this paper.

scholarly journals Use of Synchrotron Radiation from An Electron Storage Ring as an Absolute Standard of Radiant Flux for Wavelengths from 1100 to 3000 Å

1971 ◽  
Vol 41 ◽  
pp. 392-392
Author(s):  
Edward T. Fairchild
Keyword(s):  
Synchrotron Radiation ◽  
Storage Ring ◽  
Radiant Flux ◽  
Electron Storage ◽  
Absolute Sensitivity ◽  
Interference Filters ◽  
Single Electrons ◽  
The Absolute

The synchrotron radiation from the Wisconsin 240 MeV electron storage ring was used to calibrate the absolute sensitivity of photoelectric detectors to radiant flux at wavelengths between 1100 and 3000 Å. The spectrum from an electron in the storage ring beam was theoretically predicted and the number of electrons in the beam determined exactly by observing the discrete decreases in radiant flux as single electrons were removed from the stored beam. Interference filters of measured transmission were used to limit the flux to the particular wavelength bandpasses desired (200–300 Å). Photomultipliers for use as laboratory standards of radiant flux, and more recently flight photometers for stellar observation via rockets, were calibrated against this standard.

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