Launch A/B test for image browsing on English Wikipedia on **Monday, November 17**
== Before launch
[] Ensure green light from @JScherer-WMF
[] Ensure green light from @EBlackorby-WMF, @SherryYang-WMF, and @ovasileva
[] Check patches merged **after Mon Nov 10** that need to be backported & backport
== Acceptance criteria
[] Configure a new experiment on MPIC
NOTE: configure & turn on at least **24 hours before** the start date, see [docs](https://wikitech.wikimedia.org/wiki/Experimentation_Lab/Conduct_an_experiment#Launch)
[] Add the experiment name in `ReaderExperiments` [here](https://gerrit.wikimedia.org/g/mediawiki/extensions/ReaderExperiments/+/4da5d72f8a1625b47f153c1835e2af746c328b9a/resources/ext.readerExperiments.imageBrowsing/init.js#56) and [here](https://gerrit.wikimedia.org/g/mediawiki/extensions/ReaderExperiments/+/4da5d72f8a1625b47f153c1835e2af746c328b9a/src/Hooks.php#29)
[] Add the experiment name in `WikimediaEvents` [here](https://gerrit.wikimedia.org/g/mediawiki/extensions/WikimediaEvents/+/426b850234b96c428e5fec7f7476084ee40ca378/modules/ext.wikimediaEvents/xLab/imageBrowsingPageVisit.js#16)
[] Turn on the experiment
== Steps to relaunch/Rollback plan
Same as {T408105}.