Howdy Y'Brahmsers. As previouly discussed by Flemming and Peter on the tpc-list, ref. http://www.rhic.bnl.gov/brahms/WWW/private/list_hyper/brahms-tpc-l/0037.html http://www.rhic.bnl.gov/brahms/WWW/private/list_hyper/brahms-tpc-l/0038.html http://www.rhic.bnl.gov/brahms/WWW/private/list_hyper/brahms-tpc-l/0039.html, the new TPC tracking scheme interfere with the (still) current BrModuleMatchTrack. In short BrModuleMatchTrack assumes the input event node in its Event method contains a data table named "Detectortrack <detector name>" filled with pointers to instances of BrDetectorTrack. BrTpcTrackModule (base of BrTpcTrackFollowModule and hopefully soon BrTpcTrackStringModule), however, creates a data table "TpcTrack <tpc name>" and fills it with pointers to instances of BrTpcTrackCandidate. Since BrTpcTrackCandidate is a descendant of BrTrack and NOT BrDetectorTrack, as it is now BrModuleMatchTrack can not be used with the new TPC clustering and tracking scheme. This ought to be fixed ASAP. However, if I interpret Flemming correctly, it is the idea that BrModuleMatchTrack should be used for DC track mathing in D3 and D4 as well. Therefore, my first question is based on the above mentioned mails: Are the DC people ready to move from the old BrDetectorTrack to BrTrack, i.e. probably with BrTrack under a new name? Secondly, how should we deal with the BrDetectorTrack / BrTrack duality? In my (humble) opinion BrTrack, under some better pseudonym, is ready to take over from BrDetectorTrack. As Peter points out, it is a good idea to let it inherit from BrLine3D, as this class has some usefull features and conceptually if fits well as ancestor of BrTrack. The track tables, whether they come from DCs or TPCs, should have a generic name, possibly just the plural form of BrTrack's pseudonym. Therefore, if there is anyone present (out there) who sees any reason why BrTrack should not replace BrDetectorTrack, speak now or forever hold your peace. Best wishes from Jens Ivar -- Jens Ivar Jřrdre e-mail: JensIvar.Jordre@fi.uib.no usually: Dep. of Phys., Allégt. 55, N-5007 BERGEN, NORWAY currently: Bldg 510D, P.O.Box 5000, Upton, NY 11973-5000, USA phone: +1-631-344-4223
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