Differences

This shows you the differences between two versions of the page.

--- disassembly [2025/12/09 19:10] – reno
+++ disassembly [2025/12/18 12:21] (current) – reno
@@ Line 1: / Line 1: @@
-====== PMT Removal ======
+====== Disassembly  ======
-===== Disassembly =====
-==== Removing the Foroptics ====
-  - Remove the top 2 4-40 socket head screws and loosen 4-40 socket head screw on the side of the viewing window plate. {{:brewer_main:20251208_101907.jpg?600|}}{{:brewer_main:20251208_101911.jpg?600|}}
-  - Remove the viewing window plate
-  - Remove the horseshoe clamp(3) by removing 2(1,2) 6-32 socket head screws.{{:brewer_main:20251208_102010.jpg?600|}}
-  - Remove the 3 slide lock DB9 connectors and 2 slide lock DB9 connectors on the side **Note: Pay attention to where these are as it will need to be connected to the right motors when the foreoptics is being re-installed. {{:brewer_main:20251208_102014.jpg?600|}}{{:brewer_main:20251208_102017.jpg?600|}}
-  - Carefully remove the foreoptics by lifting the foreoptics tube and sliding it to the left out of the mount.{{:brewer_main:20251209_121931.jpg?600|}} {{ :brewer_main:20251209_122038.mp4 |}}
-When reinstalling the foreoptics, note that there is an alignment pin on the bottom of the foreoptics and the mount.\\ {{:brewer_main:20251209_134556.jpg?600|}}\\ Once the foreoptics is installed, there should be little play (movement) on the foreoptics. Repeat the steps backwards for installation.
-===== Removing  the PMT Core =====
-  - Remove the coax cable (1)
-  - Remove the db9 connector (2) {{:brewer_main:20251208_102212.jpg?600|}}
-  - Remove the db9 connectors (1 & 2)
-  - Carefully remove the thermister from the PMT (3)
-  - Remove the 10-32 socket head screws (4,5,6,7) {{:brewer_main:media_6_.jpg?600|}}
-  - Carefully slide the entire PMT tube out (Note the orientation when you put the PMT back in later)
-  - With the PMT standing up, remove the top cap (Note: It is a very fine thread, carefully remove the lid as there are electronics right under it.){{:brewer_main:20251209_131536.jpg?600|}}
-  - Remove the two 4-40 socket head screws {{:brewer_main:20251209_073639.jpg?600|}}
-  - Move the PCB board (High Speed Amp) out of the way and Loosen (do not remove) the 3 (1,2,3) 4-40 socket head screws (about 3 turns){{:brewer_main:20251209_073559.jpg?600|}}
-  - unscrew the threaded plate and carefully remove the PMT core {{::20251209_073438.jpg?600|}}
-  - un-solder the resistor off the post
-    - Tip 1: Due to the old solder, it maybe a good idea to add a little bit of new solder then remove it.
-    - Tip 2: You don't need to completely remove all the solder, once most the solder is gone, use a pair of plyers to move the coiled up resistor off the post
-    - Tip 3: there may be a bit of silicone on it, make sure you remove the silicone first {{:brewer_main:20251209_072620.jpg?600|}}
-  - Put on a pair of gloves!
-  - Remove the PMT's shield to expose the PMT core{{::20251209_072719.jpg?600|}}
-  - Slowly wiggle out the old PMT core {{:brewer_main:20251209_072743.jpg?600|}}
-Notes for reinstalling the PMT
-  - When reinstalling the "new" PMT core note the keyed section of the PMT socket {{:brewer_main:20251209_072803.jpg?600|}}
-  - Once the PMT core and PMT shield is reinstalled, ensure the resistor is soldered back onto the post. This is very important otherwise it will not measure/count well! Add some silicone to it to protect it from shorting it with anything else
-  - All the threads on the PMT are fine threads, be very careful and not cross thread anything
-  - Repeat the steps backwards to reinstall everything.
-  - In step 10, you do not need to thread it until it is tight, the 3 screws will keep it tight from letting it spin. Spin the thread so that the coax cable and db9 is in the correct orientation.
-  - After re-installation, in sure you seal the instrument up with fresh desiccant. It may take a couple of days for the PMT to settle down on the counts and dark counts after being opened up. In more humid location, this may take longer.
+===== Removing The PMT Core =====
+  - Remove the foreoptics ([[foreoptics#foreoptics_disassembly|Instructions here]])
+  - Remove remove the PMT and the PMT core ([[pmt#disassembly|Instructions here]])
+===== Removing the Spectrometer =====
+[[spectrometer#disassembly|Removing the Spectrometer]]