We see quite some spikes in our DRS4 sampled data in FACT. We see different types of spikes:
The double cell spikes often occur as symmetrical double cell spikes mirrored at cell 512. quadro cell spikes seem to be nothing else, than connected symmetrical double cell spikes. For the triple cell spikes we have no idea.
Currently we use simple filters to get rid of these spikes, this workes rather well for the large single cell spikes, but with the occurance of tripples and quadros we started to worry about higher multiples and revived our DRS4 spike investigations.
Now I was told, that you Stefan know already where these spikes come from and even a paper exisits. Unfortunately so far I was unable to find it.
I wonder if it is possible to predict the occurance of these spikes, so one does not have to search for them anymore and can get rid of the filters.