2010F Daily Operation Manual (06/01/2007) I. Schematic diagram of 2010F FasTEM FEG Gun valve EDS aperture (to block hard X-ray from the gun) Condenser lens aperture (Manually controlled) Sample Objective lens aperture (OL) On diffraction plane High contrast aperture Image plane Used for STEM Intermediate lens aperture (IL) = selected area aperture High angle annular dark field (HAADF) detector (EXT) Z-contrast imaging TEI Transmitted electron imaging (TEI) – small version of HAADF for both dark and bright field Off-axis TV detector (the box at the bottom) GIF-TV (Gatan image filter) Slow scan camera (SSC) 2010F Daily Operation Manual (06/01/2007) II. Fill in Log book III. Check list before operation See FAQ #1 IV. Sample Loading (Refer to the sample loading and unloading instructions) V. Operation 1. Unlock the sample stage “FasTEM” folder, run “Remote to server”, on the remote desktop there should be a Server window. 1) Choose right holder you are using. 2) Click "Ok" if you have made a change. If you have not made a change, click "Close". 3) Make sure your Y-Tilt reading is 0. If Y-tilt is not zero, click the minimized menu bar as indicated in the picture. Input password: admin Exchange sample go to different holder first click OK go to the holder you are usingClick OK. Make sure the Y-tilt reading is correct. Contact staff if it is still not right. (This step is important to have right Y tilt readout.) Failure to follow this will result in damaging the double tilt holder or worse. 3) Close the remote window (not just minimize the window) 2. Check IGP<40, then open “Gun Valve” (L1) 3. Find the sample Go to “Low Mag” (R1) mode; turn the ball to move sample around 3. Sample height (1) “Mag1” (R1); Use “Brightness” (L1) to focus beam into a point on your sample (2) Use “select” (R1) to go X 10k (3) Use “objective focus” (R1) to set DV (green screen) at 0 (4) Slowly rotate joystick until the diffraction pattern disappear and only the focused spot is seen. (5) Use “Brightness” (L1) to spread the beam. 4. Alignment for illumination Typical setting: 1) Spot size 1; 2) alpha = 3; 3) C2 aperture = 150 um. (In the green screen: 1 -3 ) It means spot size 2010F Daily Operation Manual (06/01/2007) (1) C2 aperture alignment; X100k Use “Brightness” (L1) to focus beam into a point. Use Shift X (L1) Y (R1) to center Turn “Brightness” (L1) clockwise to spread the beam. If it’s off-center, it needs align. Align the aperture use knobs on the condenser aperture. (2) Gun tilt; X 100k Use “Brightness” (L1) to focus beam into a point. Use Shift X (L1) Y (R1) to center Turn “Brightness” (L1) clockwise to spread the beam to about 1 inch in diameter. Push “Anode Wobb” (L1) and observe the moving cross. Push “Gun” (R2) under “Deflector”; CRS (R2) should be off. Use DEF knob (R2) to center the cross. Turn off “Anode Wobb” (L1) and “Gun” (R2) (3) Gun shift; X 100k Change spot size (L1) to 5. Use “Brightness” (L1) to focus beam into a point. Use Shift X (L1) Y (R1) to center it. Change spot size (L1) to 1. Focus beam. Push Deflector “Gun” (R2) and use shift knobs (R2) to center. (4) Condenser stigmatism; X 600k, alpha = 3, C2 = 150 um. Simple way: Spread the beam (CW) to about the screen size. Adjust condenser stigmatism (L1) so that the spread beam is round. Complex way: Align CL again. Turn brightness CCW to make 1 cm bright spot Use “Bright tilt” (L1) DEF X and Y (L1) to center the bright spot respect to the hallo. Turn “Brightness” CCW until a diamond-like shape is seen. Push “Cond Stig” (L1) and use def X and Y to make into (5) Pivot point alignment; X 200k Check DV is 0. Focus beam to a spot. Move “Tilt” left (to X). Frequency to 5 Amplitude to 5 Push “tilt” Push “CRS” Use (mainly) shift X, (sometimes) DEF X to make two spots into one. Move “Tilt” right (to Y) and repeat the procedure. Turn of all the buttons used and move tilt to 0 (center) 2010F Daily Operation Manual (06/01/2007) (6) Rotation center alignment; X 100k Spread the beam slightly larger than the screen. Find a small feature in sample (e.g. hole or a particle), focus sample using focus knob (R1). If the focus is too far away, you need to change sample height to focus it. Turn on TV monitor; Make sure on the right knob on the TV-BOT controller is turned CCW to the end. Push TV BOT on the pad (between L1 and L2); Slowly turn the right knob on the TV-BOT controller CW until you see a sudden increase in the intensity (should be around 8 -10 o’clock); Push wobbler “HT” (R1): sample begins to move. Push “bright tilt” (L1) Change DEF X (L1) and DEF Y (R1) to minimize the motion of the sample. Push TEM on the Pad between L1 and L2; Turn of HT wobble (R1). (7) insert objective aperture; X 200k “DIFF” (R1) On the computer, “OL” tab; o o o o o Push 1 Use “DIFF FOCUS” (R1) knob to focus the edge of the aperture. Make the aperture edge sharp Click the aperture tab and use the arrow on keyboard to center aperture respect to the bright disk. Go back to “Mag1”. (8) objective stigmatism; X 300k “Brightness” (L1) to spread beam to screen size. Push “Gif/peels” (between L1 and L2), it should automatically pop-up “Search View” window. To stop the scan, click the window and press space. If the image is shown on TV, push back to TEM (between L1 and L2), hold “Alt” “Auto filter” window and click search. Change to slow scan CCD then push “Gif/peels”. Process-Live-FFT : A new window will show rings. If the rings are not oval, use object focus (R1) to see big oval rings. Push “obj stig” (L1) to make oval into circle (slow response) Use “obj focus” to make the ring bigger. repeat and until one dark ring is seen. 2010F Daily Operation Manual (06/01/2007) 5. Find sample and take Image Exposure 2.0 sec is normal. Make sure binning is 1 and click Full CCD. You can check it by click the tool icon indicated by the red circle. To Save: Browse, select folder .“Saving” windowicon- “Save numbered” Build using string next index 1000 (1100 for next ...) Always save as Gatan format, then convert images into tiff or jpg later on Select pictures and push (Ctrl-Y) Ctrl-shift- to close all. To convert into tiff format: File – batch convert VI. To finish Push “TEM” (between L1 and L2) Mag X 40 K Spread the beam. Push “N” (left side of the screen), Push “Valve” off. On the computer, in the Fast Client Window, make sure XYZ and TX and TY are all zero. For single-tilt users, ignore the valve of TY. For double tilt holders, make sure check the shaft position before taking holders out!!!! If there is problem, contact staff. Aperture – OL, IL “out” HT tab, leave at 200KeV. Wear gloves and unload sample. 2010F Daily Operation Manual (06/01/2007) Put the holder back to the instrument. If the instrument will be used within 3 hr, fill cold trap. If not, put the coil heater in trap, place the two pins in socket Push ACD HEAT (L2) To copy data, use to PC computer in 0022 computer room. In the desktop, you should be able to find a shortcut to 2010F users. You can convert and analyze your data using DigitalMicrograph here. I. Information: 1. Joystick X tilt Y tilt Z height Top (FasTEM) left-right up-down rotation Bottom (Standard) left-right foot pedal rotation