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1  Topics / Science and Measurement / Re: Spark chamber camera trigger on: March 29, 2011, 12:54:14 pm
Thank you all for your responses.

I have looked into this and the ion recombination time is on the order of 5 microseconds. Is this long enough for the arduino to perform coincidence/anticoincidence of 3 scintillators? If so, then we have the two options; continuous recording or otherwise. What would be the best choice of camera to interface to the arduino for this?

WillR: I am not sure that I understand your question. The ion trail sticks around for a little while after a muon shoots through the chamber - we trigger the pulser and the camera very shortly after in order to see the spark.

2  Topics / Science and Measurement / Spark chamber camera trigger on: March 24, 2011, 02:21:06 pm
Hello all,

We are building a spark chamber. The basic idea is that we have three scintillators which we'll hook up to the analog input to perform coincidence/anti-coincidence. We'd like to trigger a camera when we get particular signals from these scintillators.

We have two ideas for this; we can either have a webcam hooked up to the computer constantly recording video, and record timestamps when an event occurs, and then we'll look at the frame at the timestamp time. This isn't an elegant solution though. What would be better is if we could have the arduino trigger the camera to take a picture, and either push it to the computer or just store it on a memory card on the camera until a later time.

Does anyone know of good camera hardware to use for this, or have suggestions for how we should go about doing this? I know very little about triggering cameras, or what sort of camera we might want for this. We don't need anything fancy, we just want to keep this as simple as possible.

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