Journal
JOURNAL OF SYNCHROTRON RADIATION
Volume 19, Issue -, Pages 381-387Publisher
WILEY-BLACKWELL
DOI: 10.1107/S0909049512005043
Keywords
diamond; detector; monitor; position-sensitive; quadrant; white beam; BPM; photon; undulator
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Funding
- US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886]
- Office of Biological and Environmental Research of the US Department of Energy
- Office of Basic Energy Sciences of the US Department of Energy
- National Center for Research Resources of the National Institutes of Health [P41RR012408]
- DOE [DE-FG0208ER41547]
- National Institute for Biomedical Imaging and Bioengineering [P30-EB-09998]
- US Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886]
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Two transmission-mode diamond X-ray beam position monitors installed at National Synchrotron Light Source (NSLS) beamline X25 are described. Each diamond beam position monitor is constructed around two horizontally tiled electronic-grade (p.p.b. nitrogen impurity) single-crystal (001) CVD synthetic diamonds. The position, angle and flux of the white X-ray beam can be monitored in real time with a position resolution of 500 nm in the horizontal direction and 100 nm in the vertical direction for a 3 mm X 1 mm beam. The first diamond beam position monitor has been in operation in the white beam for more than one year without any observable degradation in performance. The installation of a second, more compact, diamond beam position monitor followed about six months later, adding the ability to measure the angular trajectory of the photon beam.
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