Prior Information Notice For Miscellaneous Compounds For Microscopes – Electron Energy Loss Spectrometer (Ee ... in Czech Republic

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Prior Information Notice For Miscellaneous Compounds For Microscopes – Electron Energy Loss Spectrometer (Eels) For Tem. The Subject Of The Public Contract Is A Spectrometer That Will Enable The Use Of Eels, Stem-Eels Mapping, Eftem Chemical Mapping, Eftem Imaging And Diffraction (Including Filtered 4D-Stem) And Various 4D-Stem Techniques. The Spectrometer Will Be Installed On A Tem Titan Themis 60-300 Microscope In The Ceitec But Laboratory. The Spectrometer Will Be Optimized For Monochromatic Eels With Electron Energy Resolution Below 100 Mev And Equipped With A Q-Slit Aperture For Eels Measurements Of Magnetic Dichroism. These Spectrometer Applications Will Be Possible With At Least Two Different Cameras Allowing Direct Electron Detection With Low Noise And High Dynamic Range. The Combination Of These Cameras Ensures The Highest Acquisition Performance In The Entire Range Of Accelerating Voltages Of The Microscope, I.E. From 60 Kv To 300 Kv. At Least One Camera Will Allow Detection Of Single Electrons And High Pixel Resolution. At Least One Camera Will Be Of The Hybrid Pixel Detector Type Enabling Ultrafast Acquisition Of Eel Spectra And 4D-Stem Diffraction. The Spectrometer System Will Ensure Exposure Times That Are Orders Of Magnitude Faster (I.E. In The Order Of The First Hundreds Of Ns) Than The Microscope System Allows. Acquisition Of Spectra Using Cameras Will Be Possible With Minimized Dead Time, While The Time Of Effective Use Of The Cameras (I.E. Their Duty Cycle) Will Be Close To 100%. The Spectrometer Will Thus Enable Ultra-Fast And Continuous Acquisition Of Signals (For Eels, Stem-Eels Mapping, Tem Imaging And Diffraction, 4D-Stem), Which Minimizes Damage To Sensitive Samples To The Electron Beam And Prevents Reaching Dose Rate Limits For Saturation (I.E. Reaching Nonlinear Electron Intensities Preventing Quantitative Electron Counting) Or For Damage To Camera Sensors. The Spectrometer System Will Enable Multimodal Acquisitions, Including Correlated Stem-Eels And 4D-Stem Mapping And Simultaneous Multi-Frame Mapping Of Regions Of Interest Using Stem-Eds And Stem-Eels. The Scanning Control Unit Of The Spectrometer Will Ensure Ultra-Fast Beam Positioning (Scanning) With Times Per Pixel In The Order Of Tens Of Ns, High Data Transfer Speed Via Optical Cables And Continuous Multi-Frame Spectral Imaging With Frame-By-Frame Drift Control With Zero Dead Time Between Frames. The Spectrometer System Will Be Capable Of Time-Resolved Fast And Continuous Stem-Eels Mapping, Tem Imaging And 4D-Stem Acquisition During In-Situ Experiments. The System Will Allow Immediate Access To The Obtained Data And Their Evaluation Already During Ongoing In-Situ Measurements. The Subject Of The Public Contract Will Be Defined In Detail By Technical, Commercial And Other Contractual Conditions, Which Will Be Part Of The Tender Documentation.

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