LCABD WP 4.2 Review, 12 th April Mark Slater ESA Update – April Run Zygo Interferometer Relocated BPM4 10D37 Magnets  There were a large number of hardware updates for the April Run:  Installed and tested the full spectrometer chicane  Commissioned an additional energy BPM at high dispersion  Relocated interferometer  Commissioned the UK electronics  Developed a new calibration scheme using Helmholtz coils rather than correctors
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