Accelerator Handbook

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playground:alphatross

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playground:alphatross [2022/01/31 11:54] – Typos leblancplayground:alphatross [2026/06/25 16:12] (current) – external edit 127.0.0.1
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 == In the Control Room == == In the Control Room ==
  
-  - Source camera must have a view of the faraday screen on the blue box of the source head.  +  - Source camera must have a view of the Faraday screen on the blue box of the source head.  
     - To gain control of the source camera: On the joystick unit press "2" then "CAM" to specify the camera.     - To gain control of the source camera: On the joystick unit press "2" then "CAM" to specify the camera.
-    - Use the joystick and "TELE" or "WIDE" to create a view of interest.+    - Use the joystick and "TELE" or "WIDE" to create a view of interest. Pressing "6" followed by "Call" will move and zoom the camera appropriately. 
   - If not already present, launch the Alphatross software (Version 6.0) on the source computer.   - If not already present, launch the Alphatross software (Version 6.0) on the source computer.
   - Press the "on" button for Water Cooling.  The water cooling system:   - Press the "on" button for Water Cooling.  The water cooling system:
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         - Source is still grounded.         - Source is still grounded.
         - Source is dirty and requires service.         - Source is dirty and requires service.
-    - Set Extractor Voltage to 5kV. 
-    - Set Bias Voltage to a value that gives desired injection energy.  Typical values are at least 53keV. 
-      - Injection energy is displayed in the upper window. 
-      - Injection energy is the sum of Probe, Extractor, and Bias voltages. 
-      - Beam yields improve above 30 keV. 
-    - Set the Focus Voltage to 5.5 kV 
-    - Set the Faraday cup meter to position 7 (alphatross cup). 
-    - Tune for maximum __stable__ beam. 
-      - Primary adjustment at this stage seems to be focus voltage. 
-      - Current may be on the order of 30 μA. 
- 
-==**DO NOT PROCEED UNTIL CHAMBER TEMPERATURE EXCEEDS 39°C**== 
- 
   - Set the Oven Voltage to 80 V.   - Set the Oven Voltage to 80 V.
 +  - Set Extractor Voltage to 5kV.
 +  - Set Bias Voltage to a value that gives desired injection energy.  Typical values are at least 53keV.
 +    - Injection energy is displayed in the upper window.
 +    - Injection energy is the sum of Probe, Extractor, and Bias voltages.
 +    - Beam yields improve above 30 keV.
 +  - Set the Focus Voltage to 5.5 kV
 +  - Set the Faraday cup meter to position 7 (Alphatross cup).
 +  - Tune for maximum __stable__ beam.
 +    - Primary adjustment at this stage seems to be focus voltage.
 +    - Current may be on the order of 30 μA.
   - Set Einzel Lens to 20 kV.   - Set Einzel Lens to 20 kV.
   - Wait until the Oven Temperature is at least 160 C, 10 - 20 minutes.   - Wait until the Oven Temperature is at least 160 C, 10 - 20 minutes.
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   - Click the software button "Automatic Shutdown"   - Click the software button "Automatic Shutdown"
-  - Confirm you wish to quit be answering "y"+  - Confirm you wish to quit by answering "y"
   - Walk away.     - Walk away.  
   - ** Do not open the source gates until the process is finished **   - ** Do not open the source gates until the process is finished **
playground/alphatross.1643648091.txt.gz · Last modified: (external edit)