Bonjour. Super video merci ! J ai une question je suis français et la traduction me dit n'importe quoi avec les condensateurs et je ne peux pas bien les voire pouvez vous m écrire les références des condensateurs que vous remplacer pour que je puisse réparer le mien ? Merci beaucoup.
Excellent video! I have a unit with the classic yellowing, wondering if you have a source for replacement crystals, or even better yet, a plastic scintillator replacement haha! Would love to talk more about powering this without 8 batteries of obscure varieties, issue I am finding is that the wiring diagram seems to differ from how my unit is wired in the battery box. Would love to use a rechargeable power tool battery and a variety of boost drivers, but the "negative voltages" give me the creeps
to update I got a plastic scintillation crystal that I believed lit up at the ideal spectrum to work with this photomultiplier, and to my surprise it did work just about as well as the yellowed crystal! certainly not any better haha! other than that I hooked up 8 nine volt batteries to their own buck boost drivers (so each booster operates as a separate cell and has no ground path) I have yet to pack the batteries and the drivers into the box, but I wanted to mention this does work, and I will be making a model to house it all, should you wish to print your own battery replacement pack for inside your beautiful restored units. Other notes, I replaced the Caps as recommended, and a few of the ranges work just fine, but I suspect I have some shorts in my device, as some of the ranges are pegged. Deox and troubleshooting to follow, more fun to find! Thanks again for the huge jumping off video, this would have taken me much longer to get to this point without it!
Not without heavy modification. Firstly, the crystal would have to be replaced with a hydrogen rich and clear plastic version so it can use proton recoil as the given method of detection. Such plastics (PVT and such) are not blind to alpha, beta, and gamma so a peripheral pulse shape discriminator would need to built and incorporated so it’d only count the neutrons. Lastly, this would only be suitable for static source neutron emissions (reactors, Pu, Po/Be, etc) as an electrically generated neutron generator would wreak havoc with high voltage noise resulting in tons of false positives.
Very helpful video. Great advise about the wire jumpers on the switch.
Thanks! I'll try to put together an update to this later. I've since identified a couple other gremlins that aren't too uncommon.
Bonjour. Super video merci !
J ai une question je suis français et la traduction me dit n'importe quoi avec les condensateurs et je ne peux pas bien les voire pouvez vous m écrire les références des condensateurs que vous remplacer pour que je puisse réparer le mien ? Merci beaucoup.
Excellent video! I have a unit with the classic yellowing, wondering if you have a source for replacement crystals, or even better yet, a plastic scintillator replacement haha! Would love to talk more about powering this without 8 batteries of obscure varieties, issue I am finding is that the wiring diagram seems to differ from how my unit is wired in the battery box. Would love to use a rechargeable power tool battery and a variety of boost drivers, but the "negative voltages" give me the creeps
to update I got a plastic scintillation crystal that I believed lit up at the ideal spectrum to work with this photomultiplier, and to my surprise it did work just about as well as the yellowed crystal! certainly not any better haha! other than that I hooked up 8 nine volt batteries to their own buck boost drivers (so each booster operates as a separate cell and has no ground path) I have yet to pack the batteries and the drivers into the box, but I wanted to mention this does work, and I will be making a model to house it all, should you wish to print your own battery replacement pack for inside your beautiful restored units. Other notes, I replaced the Caps as recommended, and a few of the ranges work just fine, but I suspect I have some shorts in my device, as some of the ranges are pegged. Deox and troubleshooting to follow, more fun to find! Thanks again for the huge jumping off video, this would have taken me much longer to get to this point without it!
@@tommaragos2764
These are really fun restoration projects. Glad to hear thing are working!
Awesome video, question do you still repair these and if you do would I be able to send one to you for repair?
Not currently but I may next Spring or Summer.
That's great, never seen these scintillator before , so much equipment available in the US. Can these be used for neutron detection?
Not without heavy modification. Firstly, the crystal would have to be replaced with a hydrogen rich and clear plastic version so it can use proton recoil as the given method of detection. Such plastics (PVT and such) are not blind to alpha, beta, and gamma so a peripheral pulse shape discriminator would need to built and incorporated so it’d only count the neutrons. Lastly, this would only be suitable for static source neutron emissions (reactors, Pu, Po/Be, etc) as an electrically generated neutron generator would wreak havoc with high voltage noise resulting in tons of false positives.