Hi Guys,
Some of you might have heard about the recent eBay scoop where a number of small LND He3 detectors went for $35.00, well one of them ended up in my lab, due to the generosity of Adam Ingle. My task was to see if it would work with the GS-1100A.
After a few initial measurements I realized that it needed a better preamp, and fortunately I had one of Doug's Fine Wine preamps to spare. After hooking it up to my sound card I literally received the radio on it, so it was going to need full shielding.
I went down to the local kitchen supply discount store, and wahlah, there was a perfect container, a stainless steel cocktail mixer for $12.00.
Not only the perfect size, but it also had a stainless steel cap that formed a separate chamber for the preamp.
I filled up the container with paraffin wax, and poked a hole for the detector just before it had fully set, the preamp was attached with double sided tape inside the top strainer section of the shaker.
Used with PRA, and my sound card, it seems to pick up just the right amount of neutrons for the background.
Well done on the excellent preamp...!
Steven