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|   Nuclear hyperfine mixing in 229Th89+  | 
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Message ID: 101
    Entry time: Tue Apr  5 20:16:13 2022
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| Author: | 
Rodolfo  | 
 | Category: | 
Laser  | 
 | Subject: | 
Discriminator for HF reference signal  | 
 
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For the laser trigger we need to generate a few ns NIM-puls from the HF reference signal. Therefore we (Wilfried, Konstantin and me) have changed the constant fraction descriminator (CFD) to generate this kind of pulse.  
 
- We are using now the module N843 from CAEN, see picture below. With this we could now produce ~20 ns long pulse. 
- This signal is also used as STOP trigger for the VUPROMs | 
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