WIP: Develop the silicon+drift chamber track fitting

[ihepzhangyao]

Develop the silicon+drift chamber track fitting.

[ihepzhangyao]

Do track fitting with genfit:

• Initial track parameter

• Use McParticle as initial track parameter
• Use reconstructed silicon track as initial track parameter

• Measurement

• Use space point of SimTrackerHit in DC+SDT as measurements
• Use VXD,FTD pixel hits and space point of SIT,SET,FTD strip as measurements
• Use DC axiel wire measurement
• Use Silicon pixel and strip measurement

• Performance check

• 100% of hit efficiency
• Momentum resolusion alone pt
• Impact parameter alone pt
• Pull distribution on track
• Hit efficiency
• Fit failure rate
• Time consuming