Transmissive x-ray beam position monitors with submicron position- and submillisecond time resolution

2008 ◽  
Vol 79 (6) ◽  
pp. 063103 ◽  
Author(s):  
Martin R. Fuchs ◽  
Karsten Holldack ◽  
Mark Bullough ◽  
Susanne Walsh ◽  
Colin Wilburn ◽  
...  
Keyword(s):  
Time Resolution ◽  
Beam Position ◽  
X Ray ◽  
Beam Position Monitors

scholarly journals FemtoMAX – an X-ray beamline for structural dynamics at the short-pulse facility of MAX IV

2018 ◽  
Vol 25 (2) ◽  
pp. 570-579 ◽  
Author(s):  
Henrik Enquist ◽  
Andrius Jurgilaitis ◽  
Amelie Jarnac ◽  
Åsa U. J. Bengtsson ◽  
Matthias Burza ◽  
...  
Keyword(s):  
Structural Dynamics ◽  
Short Pulse ◽  
Pulse Length ◽  
Interatomic Distances ◽  
Beam Position ◽  
X Ray ◽  
Storage Media ◽  
Functional Dynamics ◽  
Manufacturing Techniques ◽  
Beam Position Monitors

The FemtoMAX beamline facilitates studies of the structural dynamics of materials. Such studies are of fundamental importance for key scientific problems related to programming materials using light, enabling new storage media and new manufacturing techniques, obtaining sustainable energy by mimicking photosynthesis, and gleaning insights into chemical and biological functional dynamics. The FemtoMAX beamline utilizes the MAX IV linear accelerator as an electron source. The photon bursts have a pulse length of 100 fs, which is on the timescale of molecular vibrations, and have wavelengths matching interatomic distances (Å). The uniqueness of the beamline has called for special beamline components. This paper presents the beamline design including ultrasensitive X-ray beam-position monitors based on thin Ce:YAG screens, efficient harmonic separators and novel timing tools.

Beam-position monitors in the X-ray undulator beamline at PETRA

1998 ◽  
Vol 5 (3) ◽  
pp. 627-629 ◽  
Author(s):  
U. Hahn ◽  
W. Brefeld ◽  
M. Hesse ◽  
J. R. Schneider ◽  
H. Schulte-Schrepping ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Storage Ring ◽  
Photon Beam ◽  
Total Power ◽  
Reliable Operation ◽  
Beam Position ◽  
X Ray ◽  
Powerful Beam ◽  
Beam Position Monitors

At the 12 GeV storage ring PETRA, the first synchrotron radiation beamline uses a 4 m-long undulator. The beamline, with a length of 130 m between source and sample, delivers hard X-ray photons usable up to 300 keV. The photon beam has a total power of 7 kW. Combined with the high brilliance, the powerful beam is very critical for all beamline components. Copper, located at a distance of 26 m, hit by the full undulator beam, melts within 20 ms. Different monitors are described for stable, safe and reliable operation of beam and experiments.

Position-sensitive ionization chambers in the alignment of X-ray tubes and diffractometers

1999 ◽  
Vol 32 (5) ◽  
pp. 1024-1025
Author(s):  
U. W. Arndt ◽  
M. P. Kyte
Keyword(s):  
Ionization Chambers ◽  
Beam Position ◽  
X Ray ◽  
Position Sensitive ◽  
Split Plate ◽  
Beam Position Monitors

Split-plate air-filled ionization chambers have been used as X-ray beam position monitors in the alignment of microfocus X-ray tubes to X-ray diffractometers and goniometers.

scholarly journals Silicon carbide X-ray beam position monitors for synchrotron applications

2019 ◽  
Vol 26 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Selamnesh Nida ◽  
Alexander Tsibizov ◽  
Thomas Ziemann ◽  
Judith Woerle ◽  
Andy Moesch ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Signal To Noise Ratio ◽  
Polycrystalline Diamond ◽  
Beam Position ◽  
X Ray ◽  
Single Crystal Diamond ◽  
Thin Silicon ◽  
Paul Scherrer ◽  
Radiation Hard ◽  
Beam Position Monitors

In this work, the performance of thin silicon carbide membranes as material for radiation hard X-ray beam position monitors (XBPMs) is investigated. Thermal and electrical behavior of XBPMs made from thin silicon carbide membranes and single-crystal diamond is compared using finite-element simulations. Fabricated silicon carbide devices are also compared with a 12 µm commercial polycrystalline diamond XBPM at the Swiss Light Source at the Paul Scherrer Institute. Results show that silicon carbide devices can reach equivalent transparencies while showing improved linearity, dynamics and signal-to-noise ratio compared with commercial polycrystalline diamond XBPMs. Given the obtained results and availability of electronic-grade epitaxies on up to 6 inch wafers, it is expected that silicon carbide can substitute for diamond in most beam monitoring applications, whereas diamond, owing to its lower absorption, could remain the material of choice in cases of extreme X-ray power densities, such as pink and white beams.

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