I agree with Charles.
The FAST-SDD has a few advantages that could come in handy later on. "Fast" means it can gather a tremendous # of counts in a burst. This would be handy if you were looking above 50 keV for some XRF, say of heavy rare earths. Unfortunately most XRF generators max out at 50keV so to get 100keV, a totally different type of generator is used, and they don't stay on for very long, but can be much more powerful. This is where FAST SDD shines. ALL SDD's have slightly better resolution and most will go all the way down to 1 to 2 keV. They go lower due to thinner entrance windows which = more fragile.
DP5X is not a stack, but a single stripped down board.?
If you want to reproduce what you've seen here with our Si-PINs, then the choice is clear.
Please go back to the first message on this board if you have not done so, and follow our progress and improvements with this remarkable setup. Keep your Scintillator outfit, you'll need it to verify energies above 50- with good sensitivity.
Just recently I started running my Si-PIN from 0-100, but that's because of working with uranium and wanting to see the ~63 and 93 keV peaks. It's not sensitive up there but if you can be patient for a signal to build up, it is still accurate like crazy on them.
Geo
