Segmented Foil SEM Grids at Fermilab


Abstract in English

We present recent beam data from a new design of a profile monitor for proton beams at Fermilab. The monitors, consisting of grids of segmented Ti foils 5micrometers thick, are secondary-electron emission monitors (SEMs). We review data on the devices precision on beam centroid position, beam width, and on beam loss associated with the SEM material placed in the beam.

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