DF Definitions of Tracking Elements

Below are definitions of the structures used in the clas12 dc reconstructions.

Hits

"A DC hit is characterized by superlayer, layer, sector, wire number, and time." - Veronique Ziegler, clas12-offline-software, Hit.java

Hit.java defines the representation of a drift chamber wire hit.

Clusters

"A cluster in the DC consists of an array of hits that are grouped together according to the algorithm of the ClusterFinder class" - Veronique Ziegler, clas12-offline-software, Cluster.java

Segments

"A class to describe segment objects, where a Segment is a fitted cluster that has been pruned of hits with bad residuals" - Veronique Ziegler, clas12-offline-software, Segment.java