Diamond X-ray photodiode for white and monochromatic SR beams

Keister, Jeffrey W.; Smedley, J.; Muller, Edward N.; Bohon, Jen; Héroux, A.

doi:10.1016/j.nima.2010.11.135

Cited by 8 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This space has to be shared by the beam conditioning unit (BCU), the on-axis microscope, and a retractable scatter guard tube. The BCU contains -from upstream to downstream -an x-ray beam position monitor (Sydor Instruments SI-DBPM-M405) [6], an attenuator unit, an XY pair of slits, an intensity monitor, a photon shutter and a pair of so-called dynamic slits (Figure 4). This order of devices is deliberate -the DBPM requires the full monochromatic flux for highest position resolution.…”

Section: Experimental Stationsmentioning

confidence: 99%

NSLS-II biomedical beamlines for micro-crystallography, FMX, and for highly automated crystallography, AMX: New opportunities for advanced data collection

Fuchs¹,

Bhogadi²,

Jakoncic³

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. We present the final design of the x-ray optics and experimental stations of two macromolecular crystallography (MX) beamlines at the National Synchrotron Light Source-II. The microfocusing FMX beamline will deliver a flux of ~5×10 12 ph/s at 1 Å into a 1 -20 μm spot, its flux density surpassing current MX beamlines by up to two orders of magnitude. It covers an energy range from 5 -30 keV. The highly automated AMX beamline is optimized for high throughput, with beam sizes from 4 -100 μm, an energy range of 5 -18 keV and a flux at 1 Å of ~10 13 ph/s. A focus in designing the beamlines lay on achieving high beam stability, for example by implementing a horizontal bounce double crystal monochromator at FMX. A combination of compound refractive lenses and bimorph mirror optics at FMX supports rapid beam size changes. Central components of the in-house developed experimental stations are horizontal axis goniometers with a target sphere of confusion of 100 nm, piezo-slits for dynamic beam size changes during diffraction experiments, dedicated secondary goniometers for data collection from specimen in crystallization plates, and next generation pixel array detectors. FMX and AMX will support a broad range of biomedical structure determination methods from serial crystallography on micron-sized crystals, to structure determination of complexes in large unit cells, to rapid sample screening and room temperature data collection of crystals in trays.

show abstract

Section: Experimental Stationsmentioning

confidence: 99%

NSLS-II biomedical beamlines for micro-crystallography, FMX, and for highly automated crystallography, AMX: New opportunities for advanced data collection

Fuchs¹,

Bhogadi²,

Jakoncic³

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…IIa Technologies grows ultra-high purity CVD diamond plates, and correlates width histograms from CHESS rocking curve (RC) maps with measured charge collection efficiency (CCE) and detected gamma ray energy resolution [4,5]. Samples with a broad distribution and high average width have low CCE, while poor energy resolution is correlated with long histogram tails.…”

Section: Typical Applicationsmentioning

confidence: 99%

High resolution, monochromatic x-ray topography capability at CHESS

Finkelstein

Jones²,

Pauling

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

“…Diamond has attracted attention as an ideal material for radiation detection due to its remarkable intrinsic properties [1][2][3][4][5][6] . The intrinsic wide band gap of 5.5eV of the diamond creates exceptionally low number of thermally-excited free charge carriers resulting to a very low leakage current during operation.…”

Section: Introductionmentioning

confidence: 99%

Impact of impurities and crystal defects on the performance of CVD diamond detectors

Tarun¹,

Lee²,

Yap³

et al. 2016

Diamond and Related Materials

View full text Add to dashboard Cite

Radiation detectors based on diamond are highly favored for particle physics research due to the superior radiation hardness. In this work, we investigate the influence of impurities and crystalline imperfections on the charge collection efficiency (CCE) of single crystal diamond. Seventeen ( 17 ) ultra-low fluorescent diamond samples grown by microwave plasma chemical vapor deposition method from IIa Technologies PTE LTD are pre-selected for this study. The measured CCE of all samples using 241 Am-particles) as ionizing source are analyzed together with the concentration of trace impurities and crystalline imperfection in the crystal. The amounts of impurities are quantified from integrated fluorescence intensity arising from the nitrogen vacancies (NV) created during different CVD growth process conditions. The crystal imperfections are assessed by X-ray rocking curves from X-ray topography images obtained at the Cornell High Energy Synchrotron Source. The CCE decays rapidly as the intensity of NV, (I NV ), phonon sideband approaches that of diamond 2 nd order Raman peak which follows the relation:. The energy resolution, E/E, (ratio of the energy spectrum width to the most probable peak) highly correlates with broader rocking curve width distribution.

show abstract

Diamond X-ray photodiode for white and monochromatic SR beams

Cited by 8 publications

References 10 publications

NSLS-II biomedical beamlines for micro-crystallography, FMX, and for highly automated crystallography, AMX: New opportunities for advanced data collection

NSLS-II biomedical beamlines for micro-crystallography, FMX, and for highly automated crystallography, AMX: New opportunities for advanced data collection

High resolution, monochromatic x-ray topography capability at CHESS

Impact of impurities and crystal defects on the performance of CVD diamond detectors

Contact Info

Product

Resources

About