Hi all! A short update on my power supply: (page @ http://muon.captain.at/muon-power-supply.php ) I finally found out why I apparently measured only about the...
Thanks for the update, Hannes... The detectors that I am using do not need such a high voltage as yours. However, I did find that the pulse from the GM tube,...
John Murray
whatsupdoc@...
Feb 15, 2004 3:54 pm
65
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 :...
particledetector@yaho...
Feb 15, 2004 6:19 pm
66
Hi John! ... That's exactly what I wondered about the circuit of Shawn Carlson. I will include that zener-diode in my circuit. Thanks for the reminder!! ... ...
Hi Hannes... You asked How much is the difference of muon count of 2 tubes vs. 4 tubes ? 4 tubes should produce less than half of muon count compared to 2...
... Dear Hannes and John, An alternate method for coupling the power supply and GM detector to the subsequent circuitry can be found at...
Joseph DiVerdi
diverdi@...
Feb 15, 2004 7:07 pm
69
Dear Joseph! ... Thanks a lot for the link to the page!!! So for the home-brew detector this means, that the positive voltage of the power supply will go...
... Dear Hannes, You're welcome. However one important correction - the positive voltage of the power supply connects to a 1MOhm resistor which then connects...
Joseph DiVerdi
diverdi@...
Feb 15, 2004 8:55 pm
71
For those interested in a scintillator with PMT: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2597930404&category=11896 I'm not involved with the seller...
Marco, it is interesting, but in this case, the seller canīt ship outside the States. Anyway, the scintillation offers in eBay is a very valuable supply...
Hi all! I just found this citation: 7D30.22 Si photodiode alpha detector AJP 51(5),452 Use a Si photodiode as a alpha detector. A charge sensitive preamp...
Hi all! Just found this: http://www.atsb-malaysia.com.my/book1/CHAPTER-%2012.pdf They use large area PIN diodes for high-energy particle detection. Greetings, ...
Hi all! The group has become quite silent! Please post about your progress on your own detectors or graphs with nice data or ideas for designs or ... Don't be...
In a message dated 3/9/2004 4:03:26 PM Eastern Standard Time, ... Thank you. Synchronicity here. A few weeks ago someone offered a circuit entitled, "Muon...
Hi Ed, Hannes and all... 555 timers, at least in the TTL family, are fairly hardy devices. It is quite difficult to fry one if the supply rails are 5 volts or...
Mine is up and running. Based on Aware's Aw-Radw software and two Aware RM-70s and a C-Box. Anybody wanting a screen shot send me an e-mail (Yahoogroups don't...
... Thanks for the plug John. ;) I've been struggling (literally) with the draft of an article for some time now on the apparatus and data from a series of...
Joseph DiVerdi
diverdi@...
Mar 10, 2004 3:00 am
80
... I've been struggling (literally) with the draft of an article for some time now on the apparatus and data from a series of experiments I performed some ...
Hi Joseph! Thanks a lot for the very interesting article!!! :-) ... I'm not sure what you mean by the above statements. If you have 2 detectors at the same...
... Hannes, You're welcome. :) Cosmic rays interact strongly with atmospheric atoms and give rise to a *shower* of particles (rather than a single particle) at...
Joseph DiVerdi
diverdi@...
Mar 11, 2004 3:03 am
86
John, ... Interesting and annoying problem. Your experience has confirmed my prejudice for placing the HV source, detector interface, and coincidence circuitry...
Joseph DiVerdi
diverdi@...
Mar 11, 2004 3:12 am
87
... Hi Joseph! Just a quick question before I leave to work: Do you mean that the demonstration of a neglectable false background count rate is a big dream or...
... Hannes, Hope you enjoy your day at work. ;) I meant that a big dream of mine is to demonstrate negligible background rate. It shouldn't be all that...
Joseph DiVerdi
diverdi@...
Mar 11, 2004 7:03 am
89
Hi all! Just watched the press conference on the 2 Mars Rovers and they presented a set of images with SEU's: ...
Hi Joseph! ... Good one ;-) ... Do you have any wild guess about the ratio of false counts vs. positive counts ? 10% ? 25% ? 50% ? And what countermeasures are...
... Hannes, No wild guess can be made without knowing both: (1) the background radioactive decay rate, and (2) the experimentally selected coincidence...
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