I used the ComponentTcad2d and TrackHeed classes in the simulation,but the result was a very strange signal curve.The first figure is the signal of cathode,and the next one is the signal of anode,I want to know why there is such a big negative signal,is it a problem with the position of the incident point or my setup?
Dear @kaka,
We will need a bit more information about the simulation code and associated files you are using.
To start with, are you importing the weighting potential from a TCAD solution or defining it analytically?
In addition, how does your geometry look like and where are the electrodes placed?
Kind regards,
Djunes
Thanks for your reply!
I importing the weighting potential from a TCAD solution with .grd file and .dat file.I put the electric field and the weighted field figure at the end, and also marked the incident position of the photon.
Thanks! You mentioned that you’re simulating a photon. To simplify the debugging, could you simulate the signal from a single electron-hole pair?
Do I understand correctly that the holes are drifting towards the central pillar (is it the column of a 3D sensor?) which is the anode?
Thanks!I was interested in a PhD thesis so I did this research, and this is a repetitive unit of 3D sensors.
- The central column is the cathode, and the surrounding electrodes are the anode.
- The first signal I gave was the result of a single photon incident.
Hi,
the anodes have a quite “unusual” shape, I’m not quite sure what to expect for such a configuration. Also in reality the electric field will reflect the periodic structure of the sensor, which is not the case in your simulation, so I’m not sure it’s realistic enough.