2026-04-23 08:10:08 From Wouter Deconinck (he/him) to Everyone:
	@shyam we don't fit helixes (ever). the navigator does a numerical integration.
	
2026-04-23 08:12:28 From shyam to Everyone:
	Thanks.
	
2026-04-23 08:23:00 From Wouter Deconinck (he/him) to Everyone:
	Gen3 DD4hep import only landed in Acts earlier this week
	
2026-04-23 08:25:30 From Wouter Deconinck (he/him) to Everyone:
	Replying to "Gen3 DD4hep import only landed in Acts earlier thi...":
	but we have a PR that supposedly works with it
	
2026-04-23 08:26:27 From Wouter Deconinck (he/him) to Everyone:
	Replying to "Gen3 DD4hep import only landed in Acts earlier thi...":
	we are currently on acts 44.4.0, we have difference in late-time track projections in acts 45 that we don't understand, and this Gen3 functionality will need at least 46.3 to work
	
2026-04-23 08:27:29 From Wouter Deconinck (he/him) to Everyone:
	Replying to "Gen3 DD4hep import only landed in Acts earlier thi...":
	it'd be helpful if this group could provide more/better benchmarks so we can actually validate these upgrades, or you should become more involved in the process.
	
2026-04-23 08:36:32 From Shujie Li to Everyone:
	Here’s the ACTS side of discussion regarding the the disk geometry https://github.com/acts-project/acts/issues/5320
	
2026-04-23 08:40:57 From Wouter Deconinck (he/him) to Everyone:
	... we also have an EICrecon PR for the new seeder already... and it's held up by the same upgrade to the Acts version...
	
2026-04-23 08:41:21 From Wouter Deconinck (he/him) to Everyone:
	Replying to "... we also have an EICrecon PR for the new seeder...":
	so ^^^ same requests will resolve both Gen3 and seeding issues
	
2026-04-23 08:42:07 From Dmitrii Kalinkin to Everyone:
	Replying to "... we also have an EICrecon PR for the new seeder...":
	We are talking about https://github.com/eic/containers/pull/172 , right?
	
2026-04-23 08:46:01 From Wouter Deconinck (he/him) to Everyone:
	v45 upgrade changes: https://github.com/eic/containers/pull/172  :-)
	
2026-04-23 08:46:27 From Wouter Deconinck (he/him) to Everyone:
	Replying to "v45 upgrade changes: https://github.com/eic/contai...":
	particularly plots in https://github.com/eic/containers/pull/172#issuecomment-4030931829
	
2026-04-23 08:47:31 From Wouter Deconinck (he/him) to Everyone:
	Replying to "v45 upgrade changes: https://github.com/eic/contai...":
	i.e. we pick up calorimeter track projection points with times of 25000 to 30000 (in arbitrary units for all intents and purposes)
	
2026-04-23 08:52:00 From Wouter Deconinck (he/him) to Everyone:
	Note that the projection surfaces are intentionally to two surface, one at the front face and one to a surface 50 mm radially deeper than the front face of the calorimeter:
	 
	         eicrecon::CylinderSurfaceConfig{ 
	             .id   = "EcalBarrel_ID", 
	             .rmin = "EcalBarrel_rmin + 50*mm", 
	             .zmin = "- 1.1*max(EcalBarrelBackward_zmax,EcalBarrelForward_zmax)", 
	             .zmax = "1.1*max(EcalBarrelBackward_zmax,EcalBarrelForward_zmax)"},
	
2026-04-23 08:52:23 From Wouter Deconinck (he/him) to Everyone:
	Replying to "Note that the projection surfaces are intentionall...":
	src/global/tracking/tracking.cc
	
2026-04-23 08:52:32 From Derek Anderson to Everyone:
	^^^
	
2026-04-23 08:52:42 From Derek Anderson to Everyone:
	Replying to "Note that the projection surfaces are intentionall...":
	Here's the permalink:
	https://github.com/eic/EICrecon/blob/df8ea0192ed6ed048499b126e7ce3c72fc286eb0/src/global/tracking/tracking.cc#L250