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equipment:jeol-t330a [2024/10/15 18:01] – q3kequipment:jeol-t330a [2025/02/07 11:28] (current) – q3k
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 {{:equipment:jeol-t330a:2024-07-30-23-47-09-113.jpg?800|}} {{:equipment:jeol-t330a:2024-07-30-23-47-09-113.jpg?800|}}
  
-Our scanning electron microscope. Quick specs:+Our first scanning electron microscope. Nicknamed 'Kenji'. Quick specs:
  
 **Maximum acceleration voltage:** 30kV **Maximum acceleration voltage:** 30kV
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 | 3          | PK00591 EF1 pins 2, 4   | Combined blank/external video signal | | 3          | PK00591 EF1 pins 2, 4   | Combined blank/external video signal |
 | 4          | PK00492 EK3 pins 5, 7   | Video signal (post ACB)              | | 4          | PK00492 EK3 pins 5, 7   | Video signal (post ACB)              |
-| 5          |                         | GND for pin 6                        |+| 5          |                         | GND for pin 4                        |
 | 6          |                         | GND for pin 1                        | | 6          |                         | GND for pin 1                        |
 | 7          | PK00492 EK8 pin 2       | External horizontal deflection       | | 7          | PK00492 EK8 pin 2       | External horizontal deflection       |
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 | 9          | N/C                     | N/C                                  | | 9          | N/C                     | N/C                                  |
  
 +=== Scan output connector ===
 +
 +JST XH connector on a three-colored (black, green, orange) wire harness. Cobbled together by q3k, will be used for image acquisition.
 +
 +^ Pin number ^ Wire color ^ Description ^
 +| 1          | Black      | Ground      |
 +| 2          | Green      | H or V sync |
 +| 3          | Orange     | H or V sync |
 +
 +H/V sync needs to be figured out (by following the wires or with an oscilloscope).
 +
 +H/V sync values are ramps +/- 5V (opamps are supplied +/- 8V).
 +
 +The wires all go to U54 (opamp input) on PK00492 (the scanning board). This opamp is used to read back data from the EK9 connector. This connector allows for chaining scan/detector though the BCX x-ray unit. There might be signal integrity issues with tapping the sync data like this, we'll see.
  
 === Connector types === === Connector types ===
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 ===== To do ===== ===== To do =====
- 
-==== Blockers ==== 
- 
-  - Machine/acquire sample holders 
-  - Track down column leak(s) 
-  - Check/replace scintillator 
- 
  
 ==== Long-term ==== ==== Long-term ====
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   - Replace diffusion pump with turbomolecular pump   - Replace diffusion pump with turbomolecular pump
   - Get a better roughing pump (scroll) so it doesn't spew oil everywhere   - Get a better roughing pump (scroll) so it doesn't spew oil everywhere
-  - Figure out what the 'PC' wire harness does 
   - Digital control and acquisition   - Digital control and acquisition
   - E-beam lithography   - E-beam lithography
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   - 2x M4x7.5mm screws for clamping down transformer wires in control module   - 2x M4x7.5mm screws for clamping down transformer wires in control module
-  - [[https://www.microtonano.com/Super-smooth-conductive-double-sided-adhesive-carbon-tapes-for-SEM-EDS-and-GSR.php|Double-sided carbon adhesive tape]] ~24€ 
   - (Torx?) socket cap head M4x12 screws for vacuum fittings   - (Torx?) socket cap head M4x12 screws for vacuum fittings
  
 ===== Log ===== ===== Log =====
 +
 +=== 2025/01/31 (q3k, rob, 0ff) ===
 +
 +New sample holder (EM-Tec JV50 + EM-Tec J4) has been attached.
 +
 +=== 2025/01/10 (q3k, rob, 0ff) ===
 +
 +New scintillator (PLANOTEC P47) has been mounted.
 +
 +=== 2024/11/09 (hugo, rahix, leah, ln) ===
 +
 +Replaced the succbone relay boards with a MODBUS-based system.  Added MODBUS-based temperature measurements for the diffusion pump.
 +
 +=== 2024/10/15 (q3k, rob) ===
 +
 +Buzzed out 'PC' connector and added scan output connector.
 +
 +=== 2024/10/14 (q3k, 0ff, hugo) ===
 +
 +Cleaned apertures in column a bit after building custom tool to extract the pole parts from the column.
 +
 +Got some even better images.
 +
 +=== 2024/10/12 (q3k, hugo, 2x guest) ===
 +
 +Fixed alignment of the cathode. Spent some time dialing in optics.
 +
 +Got some better images.
  
 === 2024/10/10 (q3k, hugo, 0ff, rob) === === 2024/10/10 (q3k, hugo, 0ff, rob) ===