diff --git a/docs/guis/multiturn/excitation.md b/docs/guis/multiturn/excitation.md index 85296bc0..d1cffbb6 100644 --- a/docs/guis/multiturn/excitation.md +++ b/docs/guis/multiturn/excitation.md @@ -211,18 +211,22 @@ Always ask the experts on shift if unsure about the kick amplitudes to set. Trigger an acquisition by clicking the yellow ++"Acquire with ACDipole excitation"++ button at the bottom left of the GUI. The AC Dipole will arm, then kick the beam. -Make sure to have a `BLM Display` application open and to monitor the losses during that time. -Afterwards, a new tab will open at the very top of the GUI to display the BPM measurements, which can be checked: a menu list lets one select any BPM from each beam, and view the recorded bunch centroid turn-by-turn data through the acquisition. +!!! tip "Watch for Losses on Kicks" + Make sure to have a `BLM Fixed Display` application open and to monitor the losses right after clicking to acquire, and watch out for large losses and spikes close to thresholds. + This is especially important to do when increasing the kick amplitude btween kicks. -??? info "Losses on Kicks" - Sometimes when increasing the kick amplitude, one will notice large losses. - In this case it is recommended to kick a couple times at this amplitude or just below to see if the losses reduce or are consistent. + - Should they reduce the beam might have just needed cleaning and one can increase the kick amplitude further. - Otherwise, stop increasing unless a beam dump is affordable. + In case large losses are observed, it is recommended to kick a couple times at the current amplitude or just below to see if the losses reduce or are consistent. + While doing so, also keep an eye on the beam intensity as can be seen on the vistars. + + Should losses reduce, the beam might have just needed cleaning and one can increase the kick amplitude further. + Otherwise stop increasing unless a beam dump is affordable (hint: it **rarely** is). Refer to the experts on shift if unsure about the losses, and whether the kick amplitude can be increased further. +After the kick is done, a new tab will open at the very top of the GUI to display the BPM measurements, which can be checked: a menu list lets one select any BPM from each beam, and view the recorded bunch centroid turn-by-turn data through the acquisition. + !!! danger "Do not Kick Both Beams Simultaneously" Firstly, kicking both beams simultaneously might exceed the losses threshold and lead to a beam dump. @@ -250,6 +254,7 @@ This deficit can be overcome in improving the signal-to-noise ratio through incr Refer to the [AC Dipole Excitation](#ac-dipole-excitation) section above for the settings and steps. Trigger an acquisition by clicking the yellow ++"Acquire with ADT/AC excitation"++ button at the bottom left of the GUI. +Just as with the AC Dipole, make sure to keep an eye on the losses (via the `BLM Fixed Display` and beam intensities) during the acquisition. *[AC Dipole]: Alternating Current Dipole *[ADT]: LHC Transverse Damper diff --git a/docs/measurements/procedures/general_checks.md b/docs/measurements/procedures/general_checks.md index d9d0d5b3..2d65893a 100644 --- a/docs/measurements/procedures/general_checks.md +++ b/docs/measurements/procedures/general_checks.md @@ -72,7 +72,7 @@ Here are some general checks on should always keep in mind when performing measu

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Have the Losses Applications Open -

When kicking from Multiturn, keep an eye on the losses application for unexpected spikes. +

When kicking from Multiturn, keep an eye on the losses application (`BLM Fixed Display`) for unexpected spikes.

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Make Sure to Log All Info