How about commencing a dig to see if CERN is publishing open source info on a serious power anomaly that occurred on December 4, 2018 causing a shutdown of a running supercollider experiment that was capable of running in the TeV (tera electron-volt) range.
Maybe fire brigade data from that date from neighboring towns? I believe that collider is partly under France and partly under Switzerland?
Any europanons feel like digging local fire brigade call-outs on that date?