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Charlie Thompson's
Buda Seismic Observatory
Radiation Detection
Web Page
Updated 5/31/2002
My Usage Policy:
1. The ideas presented herein were
not intended for radiation safety and health.
If you are working around hazardous materials
please get a certified and calibrated
survey meter.
2. If you use or reproduce my schematic(s)
please give the author (me) credit...thanks!
Convert your CDV-700 models 6 and 6A for scintillation probe operation
NEW!.....Radiation
Quantities and Units
NEW!.....Registry
of Sealed Radioactive Sources
NEW!....Civil
Defense Museum
Charlie's Paint Can Scintillator
(click here for plans)
Buy one assembled for $50 USA shipping included
Charlie's Pepperidge Farm Scintillator
NEW!..... XP2102 2" Photomulitiplier from CTR Surplus Hookup Diagram (.GIF)
Hookup diagram for XP3392/SP4 Photomuliplier
NEW!.....Scintillation Probe Hookup Diagram for R1307-10 3" Photomulitplier from CTR Surplus (.GIF)
Scintillation Probe Hookup Diagram for R1538 Photomulitplier from CTR Surplus (.PDF file)
Hookup Diagram for the Hamamatsu R878-01 Photomultiplier from CTR Surplus (.PDF file)
Hookup Diagram for Hammatsu R3318-02 (with rear cover and preamp removed) available from CTR Surplus
Finding Fossils with a Scintillator
Also check out the H.O. Anger Gamma Camera Patent from 1958 US Pat# 3,011,057
Hamamatsu Photomultiplier Catalog
NEW!...The famous 176 page BURLE (RCA) Photomulitplier Handbook (.PDF file)
Tips on photomultiplier useage (.PDF file)
Eljen, Inc. scintillator plastics and liquids
NEW!...Interactive Table of the Nuclides (identify your isotopes!)
NEW!.....Measuring HV without
excessive circuit loading:
A low-cost 100Meg HV probe adapter for your
DVM
Maintenance Manual for Victoreen CDV-700 Model 6, 6A (even pages) .PDF format
Maintenance Manual for Victoreen CDV-700 Model 6, 6A (odd pages) .PDF format
Maintenance and Ops Manual for Victoreen CDV-700 Model 6B
No Headphones for your Victoreen CDV-700?...check out this piezo speaker retrofit
Maintenance-Ops
Manual for Victoreen CDV-715 Survey Meter
NOTE- The CDV-715 is NOT a geiger counter. It does not have a
geiger tube. It
uses an ionization chamber in non-geiger mode.
It is about 1000 times LESS sensitive than a geiger counter.
These units are being listed on eBay as geiger counters which is a
mis-nomer.
If you can't get your CDV715 needle to move try a post-nuclear blast
environment.
If it does move...you are in a dangerous radiation field!
Precision Model 111b Scintillator schematic
I will pay you $15 cash for your old dead yellow 111b scintillator
crystal...email me.
A tip on measuring your 111b HV: The voltage
across R2 multiplied by 2641 will be your HV value.
You can measure this with a 10 Meg DVM with minimal error
because R2 is 100K ohms. This value
is typically about 0.400 volts so it's fairly safe as
well!
NEW! A Bar-Graph Geiger Counter by Russell Clift
NEW! Amateur Radiation Detection and Experimentation Page
More to come...when I get around to it!
email:
xcdt1x@austin.rr.com
(nix the anti-spam x's)
