First HL-LHC Beam Position Monitor ready for installation

By Emma Quinn, Gerhard Schneider and Michal Krupa (CERN)

First completed BPM, as part of in-house BPM production at CERN. Florence Thompson / CERN

This May, the first Beam Position Monitor (BPM) for the HL-LHC finished its in-house production in the CERN ateliers. The BPM is now ready for assembly with the new beam screen and will be installed in the first HL-LHC Inner Triplet cryomagnet (Q1). 

A BPM is a non-destructive diagnostic device, used to measure the transverse position of the beam. It uses four electrodes to pick up the electromagnetic field of the beam bunches as they travel through the instrument in a vacuum chamber.

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