Mechanical and thermal measurements on a 11 m long beam screen in the LHC Magnet Test String during RUN 3A

Two eleven meter long beam screens were installed in the third dipole of the LHC Magnet Test String. Instrumentation was used to measure the mechanical and thermal behaviour of the screens during thermal transients and quenches. The horizontal deformation, angular displacement, heating of the screen as a result of the quench induced eddy currents and relative longitudinal displacement between beam screen and magnet end were measured.