Simulated CLAS12 Neutron Detection Efficiency in the Forward Time-of-Flight System

We have simulated the production of quasi-elastically (QE) scattered electrons and neutrons in CLAS12 with the physics-based, CLAS12 simulation package gemc. The electron events were reconstructed with Socrat. We have studied the properties of the deposited energy and efficiency of the CLAS12 FTOF system to establish a baseline for the future measurement of the neutron magnetic form factor in Experiment E1207-104. We have simulated the extraction of the neutron detection efficiency using QE neutrons and found an efficiency of 16% for panels P1A and P1B combined together and a value of 8% for panel P2B. A comparison of the simulated efficiency using only panels P1A and P2B (that are being reused from CLAS6) with the measured values from the E5 run (using the H(e, eπ)n reaction) shows good agreement. CLAS-NOTE 2011-015 2