Studying target fragmentation from CLAS12 to JLab22

The study of the properties of hadrons produced in the target fragmentation region (TFR) serve as a test of our complete understanding of the production mechanisms in SIDIS and provide additional information on QCD dynamics that are not accessible in the current fragmentation region. We report results for a number of TFR sensitive measurements, with data taken by the CLAS12 Detector in Hall B of Jefferson Lab, that can be interpreted in terms of fracture functions, the conditional probability for the target remnant to form a specific hadron given an ejected quark. Measurements related to single hadron production, where a clear sign change is observed that captures the transition between both hemispheres, and back-to-back dihadron production, which provide access to the complete list of leading-twist fracture functions, will be presented. Finally, prospects for polarized target measurements at CLAS12 and future measurements at an upgraded JLab22 will be discussed. It will be argued that an upgraded JLab would play a critical role in mapping out this novel area of nucleonic structure, particularly in several ways that the EIC may not be optimal for.