HI all,
I am a nuclear engineering student trying to make a handheld gamma spectrometer. I am not a complete novice in electronics but I have never designed anything myself mostly just improvising off of others schematics, but I wanted a project to challenge myself and grow in understanding. So I have a few questions I hope you can answer.
First off, instead of a photomultiplier and a large NaI crystal I have opted for a small LYSO and a PIN photodiode recovered from a PET scanner. The diode I have is NOS stock but doesn't have any data sheet. From what I found it seems like single custom line from advanced photonic systems made specifically for siemens scanners. I have tried to get a response from the company that made it but haven't heard back. So how would I go about driving and testing a photodiode I know nothing about? I'm just worried that i couldo destroy it. If anyone knows a good resource I might be able to find regarding these PIN photodiodes or has an idea on how to non destructively determine operating voltage I would be ever grateful.
Second I am looking for a suitable fpga to use as a fast data collector for a raspberry pi to then interprete but cost is a bit of an issue. I want to get a spartan 6 because of it features and being still manufactured I can get used to it and use it in later developments. But it's expensive for something to practice on ando I'm am confident that most of its abilities and power consumption will be wasted on this. So what is a decent highish speed fpga that would be suitable for this project? Also I plan on using matlab to program the fpga since I am very familiar with programming in it. Has anyone used matlab to program fpgas and has some advice?
Thanks for reading, I appreciate any advice