Beamline 8.3.2 at the Advanced Light Source at Lawrence Berkeley National Laboratory is a Synchrotron-based Hard X-ray Micro-Tomography instrument. It allows non-destructive 3-Dimensional imaging of solid objects at a resolution of approximately 1 micron. More information is available at the Beamline 8.3.2 website

Specs

Advanced Light Source

  • Ring Energy: 1.9 GeV
  • Ring Current: 500 mA
  • ALS runs in top-off mode

Source

  • Superbend Magnet: 4.37 Tesla
  • Critical Energy: 11.5 keV
  • Source Size: ~220 x 30 \(\mu\)m\(^2\) fwhm
  • Beam size at sample: 40 mm x ~4.6 mm (2 x 0.23 mrad @ 20 m)
  • Flux: ~105 hν/sec/\(\mu\)m\(^2\) with multilayer

Monochromator Modes

  • Multilayer (W/B\(_4\)C, d = 2 nm), 1% bandpass (Energy range: 8-45 keV)
  • No optics=”white light” mode

Layout

  • Source-Monochromator: 14 m
  • Source-Sample: 20 m
  • A Beryllium window is located a few cm before the sample

Detection System

  • sample-detector distance can be varied from ~1 mm to 75 cm
  • Scintillator materials include: CdWO\(_4\), LuAG, GGG, Yag:Ce
  • Lenses: 1x, 2x, 5x, 10x, 20x
  • PCO.edge sCMOS 30 fps full frame, 2560 x 2160 pixels
  • PCO.dimax CMOS Camera: 2000 fps full frame, 2000 x 2000 pixels
  • Effective pixels sizes of 0.32 to 9 \(\mu\)m

Getting Beamtime

Proposals for beamtime are submitted through ALShub,. More information on submitting proposals can be found at the ALS website.