{"action":"opened","issue":{"url":"https://api.github.com/repos/GRIFFINCollaboration/GRSISort/issues/514","labels_url":"https://api.github.com/repos/GRIFFINCollaboration/GRSISort/issues/514/labels{/name}","comments_url":"https://api.github.com/repos/GRIFFINCollaboration/GRSISort/issues/514/comments","events_url":"https://api.github.com/repos/GRIFFINCollaboration/GRSISort/issues/514/events","html_url":"https://github.com/GRIFFINCollaboration/GRSISort/issues/514","id":110711872,"number":514,"title":"Problem with lost TTigress + TTip coincidences (master)","user":{"login":"jhenderson88","id":10636847,"avatar_url":"https://avatars.githubusercontent.com/u/10636847?v=3","gravatar_id":"","url":"https://api.github.com/users/jhenderson88","html_url":"https://github.com/jhenderson88","followers_url":"https://api.github.com/users/jhenderson88/followers","following_url":"https://api.github.com/users/jhenderson88/following{/other_user}","gists_url":"https://api.github.com/users/jhenderson88/gists{/gist_id}","starred_url":"https://api.github.com/users/jhenderson88/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jhenderson88/subscriptions","organizations_url":"https://api.github.com/users/jhenderson88/orgs","repos_url":"https://api.github.com/users/jhenderson88/repos","events_url":"https://api.github.com/users/jhenderson88/events{/privacy}","received_events_url":"https://api.github.com/users/jhenderson88/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-10-09T18:20:11Z","updated_at":"2015-10-09T18:20:11Z","closed_at":null,"body":"We're running a TIP + TIGRESS coincidence trigger for an upcoming experiment and are losing coincidences in the Analysis Tree building stage of GRSISort.\r\n\r\nAll TriggerIds in the Fragment tree come with both a TIGRESS and a TIP fragment, as they should do, and are sequential in terms of the Fragment tree rows. However when the events are constructed in the analysis tree, we lose 80-90% of our TIP-TIGRESS coincidences. There are large (100-300 tick) differences in the Cfd/Led times between TIGRESS and TIP events due to the vastly different rise times of the two detector types but to my understanding TIGRESS events are built on the basis of TriggerId and so this shouldn't make any real difference. \r\n\r\nWe still see the two coincidence peaks (one in TIGRESS, one in TIP) in the singles spectra of the analysis tree, so the events aren't being completely lost. It's just that the vast majority of them are no-longer correlated with one another in the data.\r\n\r\nThis is using the master branch."}}