A GUI to measure the transmission through the BPMs has been developped. It is in the git panneaux at Diags/BPM (a git pull is needed to have access to it).

To lauch it type:

ipython IHM_BPM_ratio.py

You get a window with the interface like in the attached image.

For the measurements to be meaningfull you need to click on "set fixed gain". It will set all the BPms on teh same fixed gain.

Once you are done, it is preferable to revert the BPMs to auto gain by clicking on "set auto gain".

Note: The charge on TL/BPM.03 is higher than on TL/BPM.02 see separate elog entry about this.