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Test of "Slow Negative Particle Mode"


We tested our 2-D Detector's in "negative charged particle mode". This is a spectra.

2-D Detector's Image in negative mode

As you seen, this resolution was worse than "positive mode" (for example this).
In this situation, the count rates was higher, a factor of 3, than before.


And another problem exists. The signel from MCP-front has had ringing noise. In the following image, the yellow line is it.
Oscilloscope image 1
This image was taken when MCP-back signal was grounded.

Oscilloscope image 2
This image was taken by MCP-back signal was bypassed through Amplifer.




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