Vortex-EM® - Silicon Drift X-Ray Detector Spectrometer
| Name | Silicon Drift X-Ray Detector Spectrometer |
|---|---|
| Type | Vortex-EM® |
| Overview | Vortex-EM® silicon drift X-ray detectors feature the largest
active area single element detector (50 mm2) available
of its kind. Vortex-EM® detectors are produced from high
purity silicon using state-of-the-art CMOS production
technology. They feature excellent energy resolution(<129
eV FWHM at Mn Kα is typical) and a high count rate capability
(input rate >1 Mcps) at 0.25 μs PT with an output
count rate of 600 kcps. A unique feature
of these detectors is their ability to process high count
rates with virtually zero loss in energy resolution and
no peak shift with count rate. The Vortex-EM® is operated at near room temperature and cooled by a thermoelectric cooler (TEC) and can be cycled as frequently as needed without any degradation in detector performance. Cool down times are typically less than 3 minutes. The Vortex-EM® X-ray spectroscopy system includes a detector unit and control box, which includes power supplies for the detector and TEC, a digital pulse processor with PI-SPEC Software. The complete detector also contains a charge-sensitive preamplifier and temperature stabilization system, which eliminates concerns of varying ambient temperature. Click here for a PDF of the Vortex-EM Specifications. |
| Typical Applications |
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| Features |
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| US Patent Number: |
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Specifications
| Detector: | Crystal Material – Silicon Crystal Active Area – 50 mm² (nominal) Crystal Thickness – 350 μm (nominal) |
|---|---|
| Window: | Material – Thin polymer |
| Energy Resolution (FWHM) @ 5.9 keV: |
@ 12 μs Peaking Time - <130 eV Typical, 140 eV
Maximum @ 4 μs Peaking Time - <145 eV Typical, 150 eV Maximum @ 1 μs Peaking Time - <165 eV Typical, 178 eV Maximum @ 0.25 μs Peaking Time - <230 eV Typical, 250 eV Maximum |
| Preamplifier: | Type – Charge sensitive, 1.6 mV/keV Signal polarity – Positive Reset – Electrical, <1 μs duration Rise time – <100 ns |
| Cooling | Thermoelectric |
| Power Consumption: | Nominal voltage – 110/230 V (switchable) Power supply and detector – 40 W Maximum |
| Physical Specifications: | Detector package weight – 3,375 g Length – 550 mm (300 mm probe) Height x Width – 114 mm x 102 mm Cable Standard Length – 3 m |
| Digital Pulse Processor (DPP): | PI-SPEC Software |
| Digital Controls: | Gain – 16-Bit DAC Peaking Time – 0.25 – 64 μs Preset Time – Up to 1717s |
| Data Output: | Spectrum Size – 1024, 2048, 4096 or 8192 channels Channel Size – 10, 20 or 40 eV |
| Integral Non-linearity: | 0.1% of full-scale output |
| Deadtime Correction: | Better than ± 0.5% accuracy from 0 to 120,000 cps at 4 μs peaking time |
| Software: | PI-SPEC software* – Allows user to acquire,
manipulate spectra. Pentium III or later with 64
MB memory and 30 MB available disk space. VTXDLL package* – Dynamic-Link Library to facilitate host software communication with the DPP. Pentium III or later with 64 MB memory and 30 MB available disk space. *Requires a standard USB2.0 port |
