An experimental evaluation of monochromatic x-ray beam position monitors at diamond light source

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.

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

Review of Scientific Instruments ◽

10.1063/1.2938400 ◽

2008 ◽

Vol 79 (6) ◽

pp. 063103 ◽

Cited By ~ 8

Author(s):

Martin R. Fuchs ◽

Karsten Holldack ◽

Mark Bullough ◽

Susanne Walsh ◽

Colin Wilburn ◽

...

Keyword(s):

Time Resolution ◽

Beam Position ◽

X Ray ◽

Beam Position Monitors

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The Beam Based Alignment Technique for the Measurements of Beam Position Monitors Offsets and Beam Offsets from Quadrupoles in the Pohang Light Source

Japanese Journal of Applied Physics ◽

10.1143/jjap.38.6926 ◽

1999 ◽

Vol 38 (Part 1, No. 12A) ◽

pp. 6926-6930 ◽

Cited By ~ 2

Author(s):

K. H. Kim ◽

J. Y. Huang ◽

I. S. Ko

Keyword(s):

Light Source ◽

Beam Position ◽

Pohang Light Source ◽

Alignment Technique ◽

Beam Position Monitors

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Development and testing of stable supports for the National Synchrotron Light Source II RF beam position monitors

Diamond Light Source Proceedings ◽

10.1017/s2044820110000237 ◽

2010 ◽

Vol 1 (MEDSI-6) ◽

Author(s):

B. Kosciuk ◽

V. Ravindranath ◽

O. Singh ◽

S. Sharma

Keyword(s):

Light Source ◽

Coefficient Of Thermal Expansion ◽

National Laboratory ◽

Brookhaven National Laboratory ◽

National Synchrotron Light Source ◽

Beam Position ◽

Vacuum Chambers ◽

Synchrotron Light ◽

Under Construction ◽

Beam Position Monitors

The National Synchrotron Light Source II currently under construction at the Brookhaven National Laboratory is expected to provide unprecedented orbit stability in the storage ring in order to fully utilize the very small emittance of the electron beam. The desire to measure the position of such small beams to high resolution imposes stringent requirements on the thermal and structural stability of the supports for the beam postion monitor (BPM) pick-up electrodes located on multi-pole vacuum chambers and more so on those located upstream and downstream of insertion device sources where the beam size is the smallest. Even with tunnel air temperature expected to be controlled to ±0.1°C, low coefficient of thermal expansion materials is required to meet this level of thermal stability. Here, we present the application of these materials to the design of stable supports for radio frequency (RF)-BPMs as well as the methods of testing their performance.

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

Journal of Synchrotron Radiation ◽

10.1107/s0909049597013940 ◽

1998 ◽

Vol 5 (3) ◽

pp. 627-629 ◽

Cited By ~ 3

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.

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