Hi All, Just wanted to throw out some fodder for discussion and tap the smart brains of the group. Recently I was digging through my vacuum tube boxes and came...
Hi Raul Perhaps one way to start would be to plot a graph of current against voltage, slowly raising the voltage until the tube 'strikes' (at about 90V?)....
... Hi Raul! Hi John! I assume a current limiting resistor would be needed like for the GM tubes ? Just guessing here, since I didn't even have such a VR tube...
... Hello Raul, there is something more than electrodes and gas... some VR tubes have a radioactive primer electrode, maintaining a little ionization of the...
Hi all! Here is another "must read" I discovered yesterday: From: http://www.issi.unibe.ch/spatium.html Cosmic Rays Hansjoerg Schlaepfer, Contraves Space AG,...
... Hi Geo! Unfortunately I don't have one. I do everything on breadboards. When I was in school I had the opportunity to do own boards, but since then I've...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the particledetector group. File : /Logic...
particledetector@yaho...
Dec 4, 2004 11:21 pm
319
See FILEs for schematic. Using the TL-431C precision variable shunt regulator to replace the Zener diodes in a blocking oscillator HV supply will yield a...
Hi Geo: I don't have a board now, but if there is some demand I can design and make very high quality double sided boards. Let me know what board you are...
A board for the detector logic, even one with an onboard digital readout would be nice. The Matis boards are not generally available at this time, and the...
I have a particle detector here at school, and I'm looking for software that would calculate the data output and change it into useable information. I'm sure...
... Well, I'm not aware of any cosmic ray event data reduction software... But when I get to that stage of analyzing data, I'll write a cross- platform JAVA...
I regret to inform you that, after a valiant battle, Ed Chouinard succumbed to cancer and died on December 2nd. My name is David Belhumeur. I am Ed's...
Hi all , Was wondering if someone in this group can put me on the right track. Would like to build a muon detector using two PMTs with scintillators. But from...
... Hans, I don't believe you have the problem you believe you have... First of all, even if the light pulse is as short as is reported, the output of the...
Joseph DiVerdi
diverdi@...
Dec 21, 2004 2:33 am
329
Hi Joseph , Thanks for the quick response Joseph, nice to hear from you again! Well, this little problem is slowly getting to me..... Generally I don't like to...
... Hans, You're welcome and likewise. I believe you're right about the (incredible) flux following the collisions in accelerators and consider ourselves (in...
Joseph DiVerdi
diverdi@...
Dec 21, 2004 5:59 am
331
Happy New Year to all :-) Here are a few updates you might be interested in: The past days there was a very interesting discussion on the CDV700CLUB group,...
Hi Geo! ... Pretty cool! Thank you very much for this posting! Best regards, Hannes. -- +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+ ... ...
The TSA HHD440 is a complex instrument that has a computer inside, and a nice large block of plastic scintillator with integral PMT. Recently I was able to get...
Hi Ned! ... Way cool! Any details/schematics you can share by now ? ... You know, I've tested one flat detector at normal air pressure and it seemed to work...
[CC to the particledetector group. Let's continue this discussion over there] Hi Charles! ... Well, the main reason why I want to operate the flat detectors at...
Thanks Charles, great info! Helium is also not too difficult to get ( I recently saw a party baloon kit for quite a reasonable price ). I'll try to find time...
A quick update: I did confirm that the geometry of the chamber was the problem. I added a small "flag" of aluminum foil, maybe 2 cm^2 or so, inside the ...
Hi Ned! Ned Lewis wrote: [...] ... [...] ... That is pretty cool stuff! I hope to have time to try it soon myself! As for the electrometer chip: Take a look at...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
