On 12BM-B we use many different detectors to support our multitude of techniques. These detectors include:

• Ionization chambers
• 13-Element Ge detector
• Single element Si - diodes
• MerlinX (WAXS)
• CCD detector MX225 (SAXS)
• PILATUS 100k
• SSD VortexME7

ADC IC-400-200 Ion Chamber(s)

There are 3 Ion Chambers in use at 12BM (filled with N2, Ar, or Kr) each being used to monitor the beam at different positions during experiments. The first three chambers are used during XAS experiments to monitor the beam - 1 before the sample area (Incoming Beam Flux) and 2 after the sample area for transmission and reference foil. Sometimes experiments call for special setups in this case we use the ion chambers as needed around the experiment.

• 200mm length Electrodes
• Normally filled with 100% N2 (Can have other gas mixtures - Ag, He, etc).

• Monitoring the beam in small areas around the experiment.
• Attached to SAXS beamstop to monitor the beam and align the beamstop.

Canberra 13-element Ge

The Canberra 13-Element Germanium Detector is a liquid-nitrogen cooled detector.

• Electronics Upgrade 2017 with Quantum Detectors Xpress3
• FWHM energy resolution approx. 127eV at 6.539 keV (Mn k-alpha)
• Upgraded electronics remove the bottleneck at the readout stage
• Greater than 3.5Mcps output rate
• >80ns deadtime per event
• 13 Channels supported
• Filters available

MerlinX-detector

The MerlinX detector very high dynamic range imaging.

• 55um Pixel Size for WAXS.
• Up to 1200 Hz Frame Rate in 1sec Bursts
• Continuous Acquisition up to 100Hz
• 24bit Dynamic Range with Single Threshold
• Active Area - 28mm²
• Photon Counting Eliminating Dark Noise
• Compact Size

MX225-detector

The Marccd CCD detector is the reliable standard for x-ray imaging.

• 9 CCDs bonded to fiber-optic tapers
• Higher resolution with no gaps
• Excellent Linearity
• Low Noise
• Active Area - Square 225mm x 225mm

Pilatus 100k

The PILATUS 100k developed by the Paul Scherrer Institute (PSI) is a two-dimensional hybrid pixel array detector. Using single photon counting mode, with very wide dynamic range, and very short readout times. Some parameters are shown below.

• Dynamic Range of 1:1x10⁶
• Read Out Time < 3.0msec
• Pixel size of 172µm²
• Energy Range of 3keV to 30keV
• Counting Rate > 2x10⁶
• Active Area of 83.8mm² x 33.5mm²
• No Readout Noise

VortexME7

The Vortex ME7 is a seven-element silicon drift detector (SDD) with an active area of 210mm - 350mm². It offers superior energy resolution and high throughput performance for Fluorescence experiments. Some parameters are shown below.

• Using the Xspress3 electronics
• Large Area, Seven Element SSD
• Superb Energy Resolution
• Temperature Stabilization of Detector
• Cooldown time of 3 minutes
• No need for LN2 cooling