HOME ESR EXPERIMENTS LABS etc
E121 E127 E132 E125 E143 laser_cooling_2021 E142 Ê128 E146 E0052 E0018 E0028 E0038 E0075
  Nuclear hyperfine mixing in 229Th89+  Not logged in ELOG logo
Message ID: 113     Entry time: Wed Apr 6 18:51:33 2022
Author: Danyal & Carsten 
Category: Accelerator 
Subject: target bump 
This afternoon, we found out that Sergey has also implemented a "target bump". 
Although we do not use a target, this bump is still convenient because 
we can move the ion beam such that is passes perfectly through the Cu mirror. 

The setting is -8 mm and 1.3 mrad  (if I am not mistaken) 
We tested the effect on the position of the ion beam using the 
horizontal scrapers at the target: GEEXDS1HA and GEEXDS2HA. 

With the target bump set to "zero" (0 mm and 0 mrad), 
the ion beam passed 6-8 mm to the outside. 
This way, it will e.g. not pass centrally through the slit in the Cu mirror. 


With the target bump set to -8 mm and 1.3 mrad, which is the default setting, the ion beam passed centrally. 
Therefore, we left the target bump like this. 
ELOG V3.1.5-fc6679b