Difference between revisions of "34-ID-C"
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== Available Detectors == | == Available Detectors == | ||
'''ASI Quad Timpix with GaAs absorber.''' | '''ASI Quad (512x512) Timpix with GaAs absorber.''' | ||
This detector is our daily workhorse. The structure of the GaAs needs to be divided out of the data. We have a collection of whitefield images taken at various energies. | |||
This detector is our daily workhorse. The structure of the GaAs needs to be divided out of the data. We have a collection of whitefield images taken at various energies. The pixels are 55 um. | |||
[[File:ASItimepixGaAs.jpg|320px]] | |||
'''ASI Single (256x256) Timepix with Si sensor''' | |||
The first PAD used routinely at the beamline until 2017. It's still available if a second detector is required for an experiment or the Quad fails for some reason. | |||
[[File:ASItimepixSiSingle.jpg|240px]] | |||
'''Roper/PI direct detection CCD''' | |||
This was our workhorse for the first decade of the beamline. It's not used primarily for recording powder rings from battery samples during cycling. 1340x1300 with 22.5 um pixels. Runs about about 1 Hz or less reading full chip. ROI can be read faster. We only use this for CXD if we need the smaller pixels and larger area than the Andor. | |||
[[File:PIccd1.jpg|320px]] | |||
'''Andor direct detect CCD''' | |||
Used for only a couple of years, this CCD was added to the beamline just when Timepix was being commercialized. It's actually a very good CCD with low noise and relatively flat dark field background. 1024x1024 with 13 um pixels. Can read at about 3 Hz. Roughly 60 photon pixel depth at 9 keV. If we need the small pixels this detector is a goto. | |||
[[File:Andorccd1.jpg|320px]] | |||
== Publications == | == Publications == | ||
[https://www1.aps.anl.gov/Microscopy/Publications/34-ID-C '''Our full publication list'''] | [https://www1.aps.anl.gov/Microscopy/Publications/34-ID-C '''Our full publication list'''] | ||
Revision as of 21:23, 24 February 2018
Setup Images and Drawings
Media: 34IDC_basic_instrument_diagrams_for_mounting_assistance_etc.pdf
Sample Environments (Resident at beamline)
Heater Cell
The heater cell is capable of several hundred degrees centigrade. Improvements are underway to reach up to 1000 C. It also supports gas flow through the chamber. It is not vacuum compatible.
Linkam Cryo stage
The guts of this cell is a Linkam THMS controller. Temperatures as low as -100 C are possible but since the 3D printed chamber is not vacuum compatible, icing can be significant. Development of a highly dried gas environment is underway to minimize icing. The cell can also support moderate heating, limited by melting the 3D printed chamber. We have maintained 50 C for many hours with no problem. A newer version of the chamber, than that pictured, includes a magnetically secured removable cover.
Liquid/Gas Flow Cell
A small liquid flow cell is available with a peristaltic pump. A mylar or propylene film is pressed over the sample to maintain a thin liquid layer to minimize absorption of the x-ray beam. The same cell is often used for room temperature gas flow experiments.
Coin Cell holder
In-situ battery cycling is possible with a potentiostat that can be borrowed from the electrochemistry lab at APS. One can also be trained to load AMPIX cells in the echem lab. 34-ID-C also has an AMPIX cell holder compatible with the beamline.
Available Detectors
ASI Quad (512x512) Timpix with GaAs absorber.
This detector is our daily workhorse. The structure of the GaAs needs to be divided out of the data. We have a collection of whitefield images taken at various energies. The pixels are 55 um.
ASI Single (256x256) Timepix with Si sensor
The first PAD used routinely at the beamline until 2017. It's still available if a second detector is required for an experiment or the Quad fails for some reason.
Roper/PI direct detection CCD
This was our workhorse for the first decade of the beamline. It's not used primarily for recording powder rings from battery samples during cycling. 1340x1300 with 22.5 um pixels. Runs about about 1 Hz or less reading full chip. ROI can be read faster. We only use this for CXD if we need the smaller pixels and larger area than the Andor.
Andor direct detect CCD
Used for only a couple of years, this CCD was added to the beamline just when Timepix was being commercialized. It's actually a very good CCD with low noise and relatively flat dark field background. 1024x1024 with 13 um pixels. Can read at about 3 Hz. Roughly 60 photon pixel depth at 9 keV. If we need the small pixels this detector is a goto.
